10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

 _________________________________________________________

FORM 10-K

 _________________________________________________________

(Mark One)

☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31, 2020

or

☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to                                  to                                 

Commission file number 001-34626 

   _________________________________________________________

Piedmont Office Realty Trust, Inc.

(Exact name of registrant as specified in its charter)

 __________________________________________________________

Maryland	58-2328421
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
5565 Glenridge Connector Ste. 450, Atlanta, Georgia	30342
(Address of principal executive offices)	(Zip Code)

(770) 418-8800

(Registrant’s telephone number, including area code)

    _________________________________________________________

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of exchange on which registered
Common Stock, $0.01 par value	PDM	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:

(Title of Class)

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  ☒    No  ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes  ☐    No  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company (as defined in Rule 12b-2 of the Exchange Act).

Large accelerated filer  ☒                                  Accelerated filer   ☐

Non-accelerated filer   ☐                                      Smaller reporting company   ☐

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.  ☒

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  ☐    No  ☒

As of June 30, 2020, the aggregate market value of the common stock of Piedmont Office Realty Trust, Inc., held by non-affiliates was $2,077,362,736 based on the closing price as reported on the New York Stock Exchange. As of February 16, 2021, 123,955,273 shares of common stock were outstanding.

Documents Incorporated by Reference:

Registrant incorporates by reference portions of the Piedmont Office Realty Trust, Inc. Definitive Proxy Statement for the 2021 Annual Meeting of Stockholders (Items 10, 11, 12, 13, and 14 of Part III) to be filed no later than April 30, 2021.

Index to Financial Statements

		FORM 10-K
		PIEDMONT OFFICE REALTY TRUST, INC.
		TABLE OF CONTENTS
PART I.			Page No.
	Item 1.	Business	3
	Item 1A.	Risk Factors	8
	Item 1B.	Unresolved Staff Comments	27
	Item 2.	Properties	28
	Item 3.	Legal Proceedings	30
	Item 4.	Mine Safety Disclosures	30
PART II.
	Item 5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	31
	Item 6.	Selected Financial Data	34
	Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations	35
	Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	49
	Item 8.	Financial Statements and Supplementary Data	50
	Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	51
	Item 9A.	Controls and Procedures	51
	Item 9B.	Other Information	53
PART III.
	Item 10.	Directors, Executive Officers and Corporate Governance	54
	Item 11.	Executive Compensation	54
	Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	54
	Item 13.	Certain Relationships and Related Transactions, and Director Independence	54
	Item 14.	Principal Accounting Fees and Services	54
PART IV.
	Item 15.	Exhibit and Financial Statement Schedules	55
		Signatures	56

Index to Financial Statements

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements contained in this Form 10-K may constitute forward-looking statements within the meaning of the federal securities laws. In addition, Piedmont Office Realty Trust, Inc. ("Piedmont," "we," "our," or "us"), or its executive officers on Piedmont’s behalf, may from time to time make forward-looking statements in reports and other documents Piedmont files with the Securities and Exchange Commission or in connection with other written or oral statements made to the press, potential investors, or others. Statements regarding future events and developments and Piedmont’s future performance, as well as management’s expectations, beliefs, plans, estimates, or projections relating to the future, are forward-looking statements. Forward-looking statements include statements preceded by, followed by, or that include the words “may,” “will,” “expect,” “intend,” “anticipate,” “estimate,” “believe,” “continue,” or other similar words. Examples of such statements in this report include descriptions of our real estate, financings, and operating objectives; discussions regarding future dividends and share repurchases; and discussions regarding the potential impact of economic conditions on our real estate and lease portfolio.

These statements are based on beliefs and assumptions of Piedmont’s management, which in turn are based on information available at the time the statements are made. Important assumptions relating to the forward-looking statements include, among others, assumptions regarding the demand for office space in the markets in which Piedmont operates, competitive conditions, and general economic conditions. These assumptions could prove inaccurate. The forward-looking statements also involve risks and uncertainties, which could cause actual results to differ materially from those contained in any forward-looking statement. Many of these factors are beyond Piedmont’s ability to control or predict. Such factors include, but are not limited to, the following:

•Actual or threatened public health epidemics or outbreaks, such as the COVID-19 pandemic that the world is currently experiencing, and governmental and private measures taken to combat such health crises, which may affect our personnel, tenants, tenants' operations and ability to pay lease obligations, demand for office space, and the costs of operating our assets;

•The adequacy of our general reserve related to tenant lease-related assets established as a result of the COVID-19 pandemic, as well as the impact of any increase in this reserve or the establishment of any other reserve in the future;

•Economic, regulatory, socio-economic changes, and/or technology changes (including accounting standards) that impact the real estate market generally, or that could affect patterns of use of commercial office space;

•The impact of competition on our efforts to renew existing leases or re-let space on terms similar to existing leases;

•Changes in the economies and other conditions affecting the office sector in general and specifically the seven markets in which we primarily operate where we have high concentrations of our Annualized Lease Revenue (see definition in Item 1. Business of this Annual Report on Form 10-K);

•Lease terminations, lease defaults, or changes in the financial condition of our tenants, particularly by one of our large lead tenants;

•Adverse market and economic conditions, including any resulting impairment charges on both our long-lived assets or goodwill resulting therefrom;

•The success of our real estate strategies and investment objectives, including our ability to identify and consummate suitable acquisitions and divestitures;

•The illiquidity of real estate investments, including regulatory restrictions to which real estate investment trusts ("REITs") are subject and the resulting impediment on our ability to quickly respond to adverse changes in the performance of our properties;

•The risks and uncertainties associated with our acquisition and disposition of properties, many of which risks and uncertainties may not be known at the time of acquisition or disposition;

•Development and construction delays and resultant increased costs and risks;

•Our real estate development strategies may not be successful;

•Future acts of terrorism, civil unrest, or armed hostilities in any of the major metropolitan areas in which we own properties, or future cybersecurity attacks against us or any of our tenants;

•Costs of complying with governmental laws and regulations;

•Uninsured losses or losses in excess of our insurance coverage, and our inability to obtain adequate insurance coverage at a reasonable cost;

•Additional risks and costs associated with directly managing properties occupied by government tenants, including an increased risk of default by government tenants during periods in which state or federal governments are shut down or on furlough;

•Significant price and volume fluctuations in the public markets, including on the exchange which we listed our common stock;

•Changes in interest rates and changes in the method pursuant to which the LIBOR rates are determined and the phasing out of LIBOR after 2021;

•High interest rates which could affect our ability to finance or refinance properties;

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Index to Financial Statements

•The effect of future offerings of debt or equity securities or changes in market interest rates on the value of our common stock;

•Uncertainties associated with environmental and other regulatory matters;

•Potential changes in political environment and reduction in federal and/or state funding of our governmental tenants;

•Changes in the financial condition of our tenants directly or indirectly resulting from geopolitical developments that could negatively affect international trade, including the uncertainty surrounding the United Kingdom's withdrawal from the European Union, the termination or threatened termination of existing international trade agreements, or the implementation of tariffs or retaliatory tariffs on imported or exported goods;

•The effect of any litigation to which we are, or may become, subject;

•Additional risks and costs associated with owning properties occupied by tenants in particular industries, such as oil and gas, hospitality, travel, co-working, etc., including risks of default during start-up and during economic downturns;

•Changes in tax laws impacting REITs and real estate in general, as well as our ability to continue to qualify as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”), or otherwise adversely affect our stockholders;

•The future effectiveness of our internal controls and procedures; and

•Other factors, including the risk factors described in Item 1A. of this Annual Report on Form 10-K.

Management believes these forward-looking statements are reasonable; however, undue reliance should not be placed on any forward-looking statements, which are based on current expectations. Further, forward-looking statements speak only as of the date they are made, and management undertakes no obligation to update publicly any of them in light of new information or future events.

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Index to Financial Statements

PART I

ITEM 1.    BUSINESS

General

Piedmont Office Realty Trust, Inc. (“Piedmont," "we," "our," or "us") (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the ownership, management, development, redevelopment, and operation of high-quality, Class A office properties located primarily in select sub-markets within seven major Eastern U.S. office markets, with a majority of our annualized lease revenue ("ALR") being generated from the Sunbelt. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of our buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through our wholly-owned subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through various joint ventures which we control. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

Operating Objectives and Strategy

As of December 31, 2020, we owned and operated 54 in-service office properties comprised of approximately 16.4 million square feet of primarily Class A office space which was 86.8% leased. Additionally, we have one redevelopment asset comprising 127,000 square feet in Orlando, Florida. Collectively, approximately 96% of our ALR is generated primarily in select sub-markets within seven major Eastern U.S. office markets: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York, with a majority of our ALR generated from our Sunbelt markets. As we typically lease to larger, credit-worthy corporate tenants, our average lease size is between 15,000 and 20,000 square feet with an average lease term remaining of six years. Our diversified tenant base is primarily comprised of investment grade or nationally recognized corporations or governmental agencies, with the majority of our ALR derived from such tenants. No tenant accounts for more than 5.1% of our ALR.

Headquartered in Atlanta, Georgia, with regional and/or local management offices in each of our seven major markets, Piedmont values operational excellence and is a leading participant among REITs based on the number of buildings owned and managed with Building Owners and Managers Association ("BOMA") 360 designations. BOMA 360 is a program that evaluates six major areas of building operations and management and benchmarks a building's performance against industry standards. As of December 31, 2020, approximately 81% of our portfolio (based on square footage) has achieved such a designation, recognizing excellence in building operations and management. We also have focused on environmental sustainability initiatives at our properties, and 64% of our portfolio (based on square footage) has achieved and maintains "Energy Star" certification (a designation for the top 25% of similar buildings in energy consumption efficiency) as of December 31, 2020. In addition to operational excellence, we focus on fostering long-term relationships with our high-credit quality, diverse tenant base as evidenced by our approximately 67% tenant retention rate over the past ten years.

Our primary objectives are to maximize the risk-adjusted return to our stockholders by increasing cash flow from operations, by achieving sustainable growth in Funds From Operations, and by growing net asset value by realizing long-term capital appreciation. We manage risk by owning almost exclusively Class A, geographically diverse office properties which are among the most desirable in their respective office sub-markets. In addition to the creditworthiness of our tenants, we strive to ensure our tenants represent a broad spectrum of industry types with lease expirations that are laddered over many years. Operationally, we maintain a low leverage structure, utilizing almost exclusively unsecured financing facilities with laddered maturities. We utilize a national buying platform of property management support services to ensure optimal pricing for landlord and tenant services, as well as to consistently implement best practices and achieve sustainability standards. The strategies we intend to execute to achieve these objectives include:

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Index to Financial Statements

Capitalizing on Acquisition/Investment Opportunities

Our overall acquisition/investment strategy focuses on properties located in select sub-markets within seven major Eastern U.S. office markets that were identified based on their positive economic and demographic growth trends so as to position our investments for long-term appreciation. We believe these sub-markets are generally characterized by their strong amenity base, desired location for large corporate users, above-average job and rental rate growth, proximity to robust housing options, market-leading transportation access and infrastructure, and limited competitive REIT ownership. Both our acquisition and development activities are targeted towards attractively priced, high quality, Class A office properties that complement our existing portfolio in such a manner that efficiencies can be gained and our market expertise can be maximized.

Proactive Asset Management, Leasing Capabilities and Property Management

Our proactive approach to asset and property management encompasses a number of operating initiatives designed to maximize occupancy and rental rates, including the following: devoting significant resources to building and cultivating our relationships with commercial real estate executives; maintaining local management offices in markets in which we have a significant presence; demonstrating our commitment to our tenants and being socially-responsible in our local communities while maintaining the environmentally-friendly, high quality of our properties; and driving a significant volume of leasing transactions in a manner that provides optimal returns by using creative approaches, including early extensions, lease wrap-arounds and restructurings. We manage portfolio risk by structuring lease expirations to avoid, among other things, having multiple leases expire in the same market in a relatively short period of time; applying our leasing and operational expertise in meeting the specialized requirements of federal, state and local government agencies to attract and retain these types of tenants; evaluating potential tenants based on third party and internal assessments of creditworthiness; and using our purchasing power and market knowledge to reduce our operating costs and those of our tenants.

Recycling Capital Efficiently

We use our proven, disciplined capital recycling capabilities to maximize total return to our stockholders by selectively disposing of non-core assets and assets for which we believe full value potential during our ownership has been achieved, and redeploying the proceeds of those dispositions into new investment opportunities with higher overall return prospects.

Financing Strategy

We employ a conservative leverage strategy by typically maintaining a debt-to-gross assets ratio of between 30% to 40%, and a targeted debt to EBITDA of low 6x and below. To effectively manage our long-term leverage strategy, we continue to analyze various sources of debt capital to prudently ladder debt maturities and to determine which sources will be the most beneficial to our investment strategy at any particular point in time.

Use of Joint Ventures to Improve Returns and Mitigate Risk

We may selectively enter into strategic joint ventures with third parties to acquire, develop, redevelop or dispose of properties, thereby potentially reducing the amount of capital required by us to make investments, diversifying our sources of capital, enabling us to creatively acquire and control targeted properties, and allowing us to reduce our investment concentration in certain properties and/or markets without disrupting our operating performance or local operating capabilities.

Redevelopment and Repositioning of Properties

As circumstances warrant, we may redevelop or reposition properties within our portfolio, including the creation of additional amenities for our tenants to increase both occupancy and rental rates and thereby improve returns on our invested capital, as well as to maintain and enhance the competitive positioning of our properties in their respective marketplaces.

Sustainability

We are dedicated to environmentally sustainable practices that enhance our commitment to provide the highest quality office properties and produce an annual ESG report, available on our website. We strive to own and manage workplaces that are environmentally conscious, productive, and healthy for our tenants, employees, and local communities by:

•empowering our property teams with the data and tools they need to sustainably manage their buildings;

•leveraging industry partnerships with BOMA, Energy Star, and U.S. Green Building Council, to confirm and advance the energy and sustainability performance of our assets; and

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Index to Financial Statements

•implementing processes that continually improve our environmental performance.

Further details concerning Piedmont's environmental, social, and governance policies and initiatives, as well as its 2019 sustainability report, can be found on Piedmont's website, www.piedmontreit.com under the "ESG" section. The information contained on our website is not incorporated herein by reference.

Social Responsibility

•Promotion of Equity: As the public discussion surrounding equality in our country continues, so do Piedmont’s efforts to end prejudice and discrimination. Piedmont is committed to demonstrating fairness, equality, and respect to all individuals that we interact with in our communities to bring about positive change. Our commitment includes regularly monitoring and making any necessary changes to our own policies, conduct, and actions, as well as promoting anti-prejudice causes in our communities. In an effort to underscore and promote these values, Piedmont has made financial commitments to the Anti-defamation League, the NAACP, The National Association of Criminal Defense Lawyers, and the Brennan Center for Justice.

•Contribution to Local Communities: In addition to financial contributions through the Piedmont Wayne Woody Foundation, a foundation created to honor of our late Chairman of the Board, W. Wayne Woody, Piedmont recognizes the value and benefit of employee volunteerism and fully appreciates its positive impact on the community, the employees, and ultimately, Piedmont by promoting team building, collaboration, and unity.

•Scholarships to Support Diversity and Equity Efforts: Piedmont invests in the education and the career development of scholars from two Historically Black Colleges and Universities (HBCUs) including Morehouse College (Atlanta, GA) and Howard University (Washington, DC) through the need-based Piedmont Office Realty Trust Scholarship Program. The program provides scholastic support to rising sophomore students seeking an Economic, Finance, Accounting, Engineering, or real estate specific degree with a renewable scholarship for three years (for the Piedmont Scholars’ Sophomore, Junior and Senior years). The scholarship also offers each student the opportunity to intern with Piedmont and acquire a firsthand experience in commercial real estate. We believe that developing a diverse, talented, and skilled pipeline of future candidates for Piedmont and the commercial real estate industry begins with supporting the education and career paths of students today. Our hope is the Program provides career success and an expanded knowledge of commercial real estate for participating students.

Information Regarding Disclosures Presented

ALR, a non-GAAP measure, is calculated by multiplying (i) current rental payments (defined as base rent plus operating expense reimbursements, if payable by the tenant on a monthly basis under the terms of a lease that has been executed, but excluding (a) rental abatements and (b) rental payments related to executed but not commenced leases for space that was covered by an existing lease), by (ii) 12. In instances in which contractual rents or operating expense reimbursements are collected on an annual, semi-annual, or quarterly basis, such amounts are multiplied by a factor of 1, 2, or 4, respectively, to calculate the annualized figure. For leases that have been executed but not commenced relating to unleased space, ALR is calculated by multiplying (i) the monthly base rental payment (excluding abatements) plus any operating expense reimbursements for the initial month of the lease term, by (ii) 12. Unless stated otherwise, this measure excludes revenues associated with development properties and properties taken out of service for redevelopment, if any.

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Index to Financial Statements

Human Capital Resources

As of December 31, 2020, we had 137 employees, with 49 of our employees working in our corporate office located in Atlanta, Georgia. Our remaining employees work in regional and/or local management offices located in our seven major markets. These employees are involved in acquiring, developing, redeveloping, leasing, and managing our portfolio of properties. We outsource various functions where cost efficiencies can be achieved, such as certain areas of information technology, construction, building engineering, and leasing. Approximately 66% of our workforce is salaried, with the remaining 34% compensated on an hourly basis.

We strive and are committed to hiring and supporting a diverse workforce that fosters skilled and motivated people working together to deliver results in support of our core business values. We encourage all employees, tenants, and vendors to mutually respect one another's diversity in order to maintain a cohesive work environment that values fairness and equal treatment. In 2020, our employees, managers, and the majority of our contractors received professional training on workplace harassment and cybersecurity. In addition our employees received diversity and inclusion, ethics, pandemic health, and safety training. Select managers also received individual management development. We intend to provide an environment that is diverse, equitable, unbiased, pleasant, healthy, comfortable, and free from intimidation, hostilities, or other offenses that might interfere with work performance. We apply this policy to all of our employees, suppliers, and vendors, regardless of their geographic location. For more information on how we manage our workforce, please refer to our website: www.piedmontreit.com under the "ESG" section. The information contained on our website is not incorporated herein by reference.

Competition

We compete for tenants for our high-quality assets in major U.S. markets by fostering strong tenant relationships and by providing quality customer service including; leasing, asset management, property management, and construction management services. As the competition for high-credit-quality tenants is intense, we may be required to provide rent abatements, incur charges for tenant improvements and other concessions, or we may not be able to lease vacant space timely, all of which may impact our results of operations. We also compete with other buyers who may be interested in properties we wish to acquire, which may affect the amount that we are required to pay for such properties or may ultimately result in our decision not to acquire such properties. Further, we may compete with sellers of similar properties when we sell properties, which may affect the amount of proceeds we receive from the disposal, or which may result in our inability to dispose of such properties due to the lack of an acceptable amount of proceeds offered by interested buyers.

Government Regulations

All real property and the operations conducted on real property are subject to various federal, state, and local laws and regulations. Under the Americans with Disabilities Act (“ADA”) for example, places of public accommodation must meet certain federal requirements related to access and use by disabled persons. We may incur substantial costs to comply with the ADA or any other legislation. Noncompliance with ADA could result in the imposition of fines by the federal government or the award of damages to private litigants.

Furthermore, under various federal, state, and local environmental laws, ordinances, and regulations, we may be liable for the cost to remove or remediate hazardous or toxic substances, wastes, or petroleum products on, under, from, or in such property. These costs, and the costs of compliance with these laws, ordinances and regulations, could be substantial and liability under these laws may attach whether or not the owner or operator knew of, or was responsible for, the presence of such contamination. Some of these laws and regulations may impose joint and several liability on tenants, owners, or operators for the costs to investigate or remediate contaminated properties, regardless of fault or whether the acts causing the contamination were legal. The presence of hazardous substances, or the failure to properly remediate these substances, may hinder our ability to sell, rent, or pledge such property as collateral for future borrowings.

While we believe that we are currently in material compliance with these laws and regulatory requirements, compliance with new laws or regulations or stricter interpretation of existing laws by agencies or the courts may require us to incur material expenditures or may impose additional liabilities on us, including environmental liabilities. In addition, there are various local, state, and federal fire, health, life-safety, and similar regulations with which we may be required to comply, and which may subject us to liability in the form of fines or damages for noncompliance. If we were required to make significant expenditures under applicable regulations, our financial condition, results of operations, cash flows and ability to satisfy our debt service obligations and to pay distributions could be adversely affected. See Item 1A. Risk Factors for further discussion of the risks associated with compliance with regulations and environmental concerns.

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Index to Financial Statements

Segment Information

As of December 31, 2020, our reportable segments are determined based on geographic markets in which we have significant investments. We consider geographic location when evaluating our portfolio composition and in assessing the ongoing operations and performance of our properties. See Note 17, Segment Information, to the accompanying consolidated financial statements.

Concentration of Credit Risk

We are dependent upon the ability of our current tenants to pay their contractual rent amounts as the rents become due. The inability of a tenant to pay future rental amounts would have a negative impact on our results of operations. As of December 31, 2020, our tenants come from broadly diversified industry sectors and no individual tenant represented more than 5.1% of our ALR.

Other Matters

We have contracts with various governmental agencies, exclusively in the form of operating leases in buildings we own. See Item 1A. Risk Factors for further discussion of the risks associated with these contracts.

Website Address

Access to copies of each of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements, and other filings with the Securities and Exchange Commission (the "SEC"), including any amendments to such filings, may be obtained free of charge from the following website, www.piedmontreit.com, or directly from the SEC’s website at www.sec.gov. These filings are available promptly after we file them with, or furnish them to, the SEC. Information contained on our website or that can be accessed through our website is not incorporated by reference into this Annual Report on Form 10-K.

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Index to Financial Statements

ITEM 1A.    RISK FACTORS

The risks summarized and detailed below are not the only risks facing us. Please be aware that additional risks and uncertainties not currently known to us or that we currently believe to be immaterial could also materially harm our business, operating results, cash flows and/or financial condition, impair our future prospects, negatively affect our ability to make distributions to our stockholders and/or cause the price of our common stock to decline. You should also refer to the other information contained in our periodic reports, including the Cautionary Note Regarding Forward-Looking Statements, our consolidated financial statements and the related notes, and Management’s Discussion and Analysis of Financial Condition and Results of Operations for a further discussion of the risks, uncertainties, and assumptions relating to our business.

Summary of Risk Factors

Material risks that may affect our business, operating results and financial condition include, but are not limited to, the following:

Risks Related to Our Business and Operations

•actual or threatened public health epidemics or outbreaks, such as the COVID-19 pandemic, and governmental and private measures taken to combat such health crises;

•economic, regulatory, socio-economic and/or technology changes that impact the real estate market generally, or that could affect patterns of use of commercial office space;

•competition in the leasing market;

•conditions of the office market in general, and of the specific markets in which we operate;

•lease termination and/or tenant defaults, particularly by one of our significant lead tenants;

•early terminations of leases;

•managing properties owned by governmental tenants;

•adverse market and economic conditions;

•difficulty in identifying and consummating suitable acquisitions that meet our investment criteria;

•future acquisitions of properties may not yield anticipated returns, may disrupt our business, and may strain our resources;

•acquired properties may be located in new, unfamiliar markets;

•illiquidity of real estate investments;

•inability to dispose of properties in a timely or efficient manner;

•development and construction delays;

•our development strategies may not be successful;

•future terrorist attacks;

•cybersecurity incidents and security;

•uninsured losses or losses in excess of our insurance coverage;

•insolvency of our insurance carriers;

•lack of sole decision-making authority for our joint venture investments;

•costs of complying with governmental laws and regulations;

•liability for environmental contamination or adverse environmental conditions in our buildings;

•physical and transitional effects of climate change;

•loss of key personnel;

•litigation;

•ineffective disclosure controls or internal controls;

•failure to comply with the Americans with Disabilities Act or similar regulations;

Risks Related to Our Organization and Structure

•our organizational documents contain provisions that may have an anti-takeover effect and discourage third parties from seeking change of control transactions;

•our charter limits the number of shares a person may own which may discourage a takeover;

•our board of directors can take many actions without stockholder approval;

•our board or directors can issue stock with terms that may subordinate the rights of our common stockholders which may discourage a takeover;

•our board of directors could elect for us to be subject to certain Maryland law limitations on changes in control that could prevent transactions;

•our rights and the rights of our stockholders to recover claims against our directors and officer are limited;

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Risks Related to Tax Matters

•failure to qualify as a REIT;

•changes in tax laws;

•incurring certain tax liabilities;

•differences between the recognition of taxable income and the actual receipt of cash;

•our distributions do not qualify for certain reduced tax rates;

•a re-characterization of transaction may result in lost tax benefits or prohibited transactions;

•adverse changes in state and local tax laws;

•property taxes affecting returns on real estate;

Risks Associated with Debt Financing

•continuing to incur mortgage or other debt;

•high interest rates;

•restrictive debt covenants;

•increases in variable -rate debt payments;

•changes in interest rates that impact our interest rate derivative contracts;

•change in the method pursuant to which the LIBOR rates are determined and the phasing out of LIBOR after 2021;

•a downgrade in our credit rating;

General Risks

•changes in our dividend policy;

•price and volume fluctuations in the public market, including on the New York Stock Exchange;

•future offering of debt securities;

•changes in interest rates;

•securities analysts' coverage of our common stock.

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Risks Related to Our Business and Operations

Actual or threatened public health epidemics or outbreaks, such as the COVID-19 pandemic that the world is currently experiencing, and governmental and private measures taken to combat such health crises, could have a material adverse effect on our business operations and financial results.

The COVID-19 pandemic that the world is currently experiencing has adversely impacted the U.S. and global economies and our business and results of operations, changing in several ways the manner in which we operate with more emphasis on tenant and employee wellness, higher reliance on remote connectivity, and increased monitoring of tenant credit-worthiness. Various mandates from international, federal, state and local authorities requiring forced closures or other restrictions continue to impact certain markets in which our buildings are located. Although some of these restrictions have been relaxed in certain jurisdictions, others have been reinstated in areas that experienced a resurgence of COVID-19 cases. Such restrictions have affected the global economy and the regional U.S. economies in which we operate, and have negatively impacted some of our tenants' ability to pay their rent. As a result, we have entered into lease modification agreements with approximately 70 of our tenants who have experienced disruptions in their business as a result of the pandemic. Most of these agreements deferred the payment of all or some portion of three to four months of rent until 2021. The restrictions put in place to combat the pandemic have also caused certain of our retail and restaurant tenants to close or operate at reduced capacity for an extended period of time, which could cause such tenants to default on their leases. Our tenants' inability to pay rent under our leases could adversely affect our own liquidity, and there can be no guarantee that additional liquidity will be readily available or available on favorable terms in the future. Although various governmental financial programs may mitigate the risk of our tenants being unable to pay their rent under our leases, governmental assistance may not be available to all affected tenants or may be significantly delayed or discontinued. Piedmont has an approximately $4.6 million general reserve as of December 31, 2020 related to tenant lease-related assets. There can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due.

The measures taken to curb the spread of COVID-19 may increase our costs, which may not be fully recoverable under our leases or adequately covered by insurance, and could impact our profitability. In addition, these same factors may cause prospective tenants to delay their leasing decisions or to lease less space. The prevalence of work-from-home policies as a result of the pandemic may alter tenant preferences and/or demand in the long term with respect to leasing office space.

The impact on our operations and those of our tenants of the COVID-19 pandemic and of actions taken to contain it remains highly uncertain and difficult to predict, and will depend on future developments, including the scope, severity and duration of the pandemic, the success of the actions taken to contain and treat the virus, the availability and effectiveness of vaccines or other treatments, and the availability of government assistance. The long-term impact of COVID-19 on the U.S. and global economies could cause a prolonged world-wide economic downturn or recession and may lead to corporate bankruptcies among our tenants. Any of these developments, and other effects of the ongoing global pandemic of COVID-19 or any other pandemic, epidemic or outbreak of contagious diseases, could have a material adverse effect on our business and results of operations. In addition, many of the other risk factors described herein are heightened by the effects of the COVID-19 pandemic and related economic conditions, which could result in material adverse effects on our business and results of operations.

See “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” for additional information on how we have been impacted by the COVID-19 pandemic and the steps we have taken in response.

Economic, regulatory, socio-economic and/or technology changes that impact the real estate market generally, or that could affect patterns of use of commercial office space, may cause our operating results to suffer and decrease the value of our real estate properties.

The investment returns available from equity investments in real estate depend on the amount of income earned and capital appreciation generated by the properties, as well as the expenses incurred in connection with the properties. If our properties do not generate income sufficient to meet operating expenses, including debt service and capital expenditures, then our ability to make distributions to our stockholders could be adversely affected. In addition, there are significant expenditures associated with an investment in real estate (such as mortgage payments, real estate taxes, and maintenance costs) that generally do not decline when circumstances reduce the income from the property. The following factors, among others, may adversely affect the operating performance and long- or short-term value of our properties:

•changes in the national, regional, and local economic climate, particularly in markets in which we have a concentration of properties;

•local office market conditions such as employment rates and changes in the supply of, or demand for, space in properties similar to those that we own within a particular area;

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•changes in the patterns of office or parking garage use due to telecommuting or work-from-home arrangements becoming more prevalent or that reduce the demand for office workers or parking spaces generally;

•increased demand for "co-working" or sharing of office space with other companies;

•increased supply of office space due to the conversion of other asset classes such as shopping malls and other retail establishments to office space;

•the attractiveness of our properties to potential tenants and competition from other available properties;

•changes in interest rates and availability of permanent financing sources that may render the sale of a property difficult or unattractive or otherwise reduce returns to stockholders;

•changes in market rental rates and related concessions granted to tenants including, but not limited to, free rent, and tenant improvement allowances;

•the financial stability of our tenants or groups of tenants in specific industry sectors (such as the oil and gas, hospitality, travel, and co-working sectors), including bankruptcies, financial difficulties, or lease defaults by our tenants;

•the inability to finance property development or acquisitions on favorable terms;

•changes in operating costs and expenses, including costs for maintenance, insurance, and real estate taxes, and our inability to timely adjust rents in light of such changes;

•the need to periodically fund the costs to repair, renovate, and re-let space;

•earthquakes, tornadoes, hurricanes and other natural disasters, civil unrest, terrorist acts or acts of war, which may result in uninsured or under-insured losses;

•health crises such as the spread of communicable diseases;

•changes in, or increased costs of compliance with, governmental regulations, including those governing usage, zoning, the environment, and taxes; and

•significant changes in accounting standards and tax laws.

In addition, periods of economic slowdown or recession, rising interest rates, or declining demand for real estate could result in a general decrease in rents or an increased occurrence of defaults under existing leases, which would adversely affect our financial condition and results of operations. Any of the above factors may prevent us from generating sufficient cash flow to operate our business, make distributions to our stockholders, or maintain the value of our real estate properties.

We face considerable competition in the leasing market and may be unable to renew existing leases or re-let space on terms similar to the existing leases, or we may expend significant capital in our efforts to re-let space.

Every year, we compete with a number of other developers, owners, and operators of office and office-oriented, mixed-use properties to renew leases with our existing tenants and to attract new tenants. The competition for credit worthy tenants is intense, and we may have difficulty competing, especially with competitors who have purchased properties at discounted prices allowing them to offer space at reduced rental rates, or those that have the ability to offer superior amenities or more flexible leasing terms. If our competitors offer office accommodations at rental rates below current market rates or below the rental rates we currently charge our tenants, we may lose potential tenants, and we may be pressured to reduce our rental rates below those we currently charge in order to retain tenants upon expiration of their existing leases. Even if our tenants renew their leases or we are able to re-let the space to new tenants, the terms and other costs of renewal or re-letting, including the cost of required renovations or additional amenities, increased tenant improvement allowances, leasing commissions, declining rental rates, and other potential concessions, may be less favorable than the terms of our current leases and could require significant capital expenditures. If we are unable to renew leases or re-let space in a reasonable time, or if rental rates decline or tenant improvements, leasing commissions, or other costs increase, our financial condition, operating results, or cash flows could be adversely affected.

Our rental revenues will be significantly influenced by the conditions of the office market in general and of the specific markets in which we operate.

Because our portfolio consists exclusively of office properties, we are subject to risks inherent in investments in a single property type. This concentration exposes us to the risk of economic downturns in the office sector to a greater extent than if our portfolio also included other sectors of the real estate industry. Further, our portfolio of properties is primarily located in seven major metropolitan areas: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York. Collectively, these seven metropolitan areas accounted for approximately 96% of our ALR as of December 31, 2020. As a result, we are particularly susceptible to adverse market conditions in these cities, including any reduction in demand for office properties, industry slowdowns, civil unrest, governmental cut backs, relocation of businesses and changing demographics. Adverse economic or real estate developments in these markets, or in any of the other markets in which we operate, or any decrease in demand for office space resulting from the local or national government and business climates, could adversely affect our rental revenues and operating results.

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We depend on tenants for our revenue, and accordingly, lease terminations and/or tenant defaults, particularly by one of our significant lead tenants, could adversely affect the income produced by our properties.

The success of our investments materially depends on the financial stability of our tenants, any of whom may experience a change in their business at any time. Many of our tenants may be adversely impacted by the specific consequences of the COVID-19 pandemic or various geopolitical developments that negatively affect international trade, including the uncertainty surrounding the terms of the United Kingdom’s withdrawal from the European Union or the implementation of tariffs on imported or exported goods. If any of our tenants, or groups of tenants in specific industry sectors, experience or anticipate an adverse change in their respective businesses for any reason, they may delay lease commencements, decline to extend or renew their leases upon expiration, fail to make rental payments when due, or declare bankruptcy. Any of these actions could result in the termination of the tenants’ leases, or expiration of existing leases without renewal, and the loss of rental income attributable to the terminated or expired leases. In the event of a tenant default or bankruptcy, we may experience delays in enforcing our rights as a landlord and may incur substantial costs in protecting our investment and re-letting our property. If any leases are terminated or defaulted upon, we may also be unable to re-lease the property for the rent previously received or to sell the property without incurring a loss. In addition, significant expenditures related to debt payments, real estate taxes, insurance, and maintenance costs are generally fixed or may not decrease immediately when revenues at the related property decrease.

The occurrence of any of the situations described above, particularly if it involves one of our significant lead tenants, could seriously harm our operating performance. As of December 31, 2020, only two tenants represented 5% or more of our revenue stream: US Bancorp (5.1% of ALR) and State of New York (5.0% of ALR). The revenues generated by the properties that any of our lead tenants occupy are substantially dependent upon the financial condition of these tenants and, accordingly, any event of bankruptcy, insolvency, or a general downturn in the business of any of these tenants may result in the failure or delay of such tenant’s rental payments, which may have a substantial adverse effect on our operating performance.

Some of our leases provide tenants with the right to terminate their leases early.

Certain of our leases permit our tenants to terminate their leases of all or a portion of the leased premises prior to their stated lease expiration dates under certain circumstances, such as providing notice by a certain date and, in many cases, paying a termination fee. In certain cases, such early terminations can be effectuated by our tenants with little or no termination fee being paid to us. To the extent that our tenants exercise early termination rights, our cash flow and earnings will be adversely affected, and we can provide no assurances that we will be able to generate an equivalent amount of net rental income by leasing the vacated space to new third party tenants.

We may face additional risks and costs associated with directly managing properties occupied by government tenants.

We currently own four properties in which some of the tenants are federal government agencies. Lease agreements with these federal government agencies contain certain provisions required by federal law, which require, among other things, that the contractor (which is the lessor or the owner of the property) agree to comply with certain rules and regulations, including but not limited to, rules and regulations related to anti-kickback procedures, examination of records, audits and records, equal opportunity provisions, prohibitions against segregated facilities, certain executive orders, subcontractor costs or pricing data, and certain provisions intended to assist small businesses. Through one of our wholly-owned subsidiaries, we directly manage properties with federal government agency tenants and, therefore, we are subject to additional risks associated with compliance with all such federal rules and regulations. We face additional risks and costs associated with directly managing properties occupied by government tenants, including an increased risk of default by such tenants during periods in which state or federal governments are shut down or on furlough. There are certain additional requirements relating to the potential application of the Employment Standards Administration’s Office of Federal Contract Compliance Programs and the related requirement to prepare written affirmative action plans applicable to government contractors and subcontractors. Some of the factors used to determine whether such requirements apply to a company that is affiliated with the actual government contractor (the legal entity that is the lessor under a lease with a federal government agency) include whether such company and the government contractor are under common ownership, have common management, and are under common control. One of our wholly-owned subsidiaries is considered a government contractor, increasing the risk that requirements of these equal opportunity provisions, including the requirement to prepare affirmative action plans, may be determined to be applicable to the entire operations of our company.

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Adverse market and economic conditions may cause us to recognize impairment charges on tangible real estate and related lease intangible assets or otherwise impact our performance.

We continually monitor events and changes in circumstances that could indicate that the carrying value of the real estate and related lease intangible assets in which we have an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present which indicate that the carrying value of real estate and related lease intangible assets may not be recoverable, we assess the recoverability of these assets by determining whether the carrying value will be recovered through the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we adjust the real estate and related lease intangible assets to their estimated fair value and recognize an impairment loss.

Projections of expected future cash flows require management to make assumptions to estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. The subjectivity of assumptions used in the future cash flow analysis, including discount rates, could result in an incorrect assessment of the property’s estimated fair value and, therefore, could result in the misstatement of the carrying value of our real estate and related lease intangible assets and our net income. In addition, adverse economic conditions could also cause us to recognize additional asset impairment charges in the future, which could materially and adversely affect our business, financial condition and results of operations.

Adverse market and economic conditions could cause us to recognize impairment charges on our goodwill.

We review the value of our goodwill on an annual basis and when events or changes in circumstances indicate that the carrying value of goodwill may exceed the estimated fair value of such assets. Such interim events could be adverse changes in legal matters or in the business climate, adverse action or assessment by a regulator, the loss of key personnel, or persistent declines in our stock price below our carrying value. Volatility in the overall market could cause the price of our common stock to fluctuate and cause the carrying value of our company to exceed the estimated fair value. If that occurs, our goodwill could potentially be impaired. Impairment charges recognized in order to reduce our goodwill could materially and adversely affect our financial condition and results of operations.

Our earnings growth will partially depend upon future acquisitions of properties, and we may not be successful in identifying and consummating suitable acquisitions that meet our investment criteria.

Our business strategy primarily involves the acquisition of high-quality office properties in selected markets. This strategy requires us to identify suitable acquisition candidates or investment opportunities that meet our criteria and are compatible with our growth strategy. We may not be successful in identifying suitable properties or other assets that meet our acquisition criteria or in consummating acquisitions on satisfactory terms, if at all. Failure to identify or consummate acquisitions could slow our growth. Likewise, we may incur costs pursuing acquisitions that we are ultimately unsuccessful in completing.

We also face significant competition for attractive investment opportunities from a large number of other real estate investors, including investors with significant capital resources such as domestic and foreign corporations and financial institutions, publicly traded and privately held REITs, private institutional investment funds, investment banking firms, life insurance companies and pension funds. As a result of competition, we may be unable to acquire additional properties, the purchase price may be significantly elevated, or we may have to accept lease-up risk for a property with lower occupancy, any of which could adversely affect our financial condition, results of operations or cash flows.

Future acquisitions of properties may not yield anticipated returns, may disrupt our business, and may strain management resources.

We intend to continue acquiring high-quality office properties, subject to: the availability of attractive properties, our ability to arrange financing, and our ability to consummate acquisitions on satisfactory terms. In deciding whether to acquire a particular property, we make certain assumptions regarding the expected future performance of that property. However, newly acquired properties may fail to perform as expected. Costs necessary to bring acquired properties up to standards established for their intended market position may exceed our expectations, which may result in the properties’ failure to achieve projected returns. To the extent that we engage in acquisition activities, they will pose the following risks, among others:

•we may acquire properties or other real estate-related investments that are not initially accretive to our results upon acquisition or accept lower cash flows in anticipation of longer term appreciation, and we may not successfully manage and lease those properties to meet our expectations;

•we may not achieve expected cost savings and operating efficiencies;

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•we may be unable to quickly and efficiently integrate new acquisitions, particularly acquisitions of portfolios of properties, into our existing operations;

•management attention may be diverted to the integration of acquired properties, which in some cases may turn out to be less compatible with our operating strategy than originally anticipated;

•we may not be able to support the acquired property through one of our existing property management offices and may not successfully open new satellite offices to serve additional markets;

•the acquired properties may not perform as well as we anticipate due to various factors, including changes in macro-economic conditions and the demand for office space; and

•we may acquire properties without any recourse, or with only limited recourse, for liabilities, whether known or unknown, such as clean-up of environmental contamination, unknown/undisclosed latent structural issues or maintenance problems, claims by tenants, vendors or others against the former owners of the properties, and claims for indemnification by general partners, directors, officers, and others indemnified by the former owners of the properties.

Acquired properties may be located in new markets, where we may face risks associated with investing in an unfamiliar market.

We may acquire properties located in markets in which we do not have an established presence. We may face risks associated with a lack of market knowledge or understanding of the local economy, forging new business relationships in the area and unfamiliarity with local government and permitting procedures. As a result, the operating performance of properties acquired in new markets may be less than we anticipate, and we may have difficulty integrating such properties into our existing portfolio. In addition, the time and resources that may be required to obtain market knowledge and/or integrate such properties into our existing portfolio could divert our management’s attention from our existing business or other attractive opportunities.

The illiquidity of real estate investments could significantly impede our ability to respond to adverse changes in the performance of our properties.

Because real estate investments are relatively illiquid and large-scale office properties such as many of those in our portfolio are particularly illiquid, our ability to sell promptly one or more properties in our portfolio in response to changing economic, financial, and investment conditions is limited. The real estate market is affected by many forces, such as general economic conditions, availability of financing, interest rates, and other factors, including supply and demand, that are beyond our control. We cannot predict whether we will be able to sell any property for the price or on the terms set by us or whether any price or other terms offered by a prospective purchaser would be acceptable to us. We also cannot predict the length of time needed to find a willing purchaser and to close the sale of a property. We may be required to expend funds to correct defects or to make improvements before a property can be sold. We cannot provide any assurances that we will have funds available to correct such defects or to make such improvements. Our inability to dispose of assets at opportune times or on favorable terms could adversely affect our cash flows and results of operations.

We may not be able to dispose of properties that no longer meet our strategic plans or to timely and efficiently apply the proceeds from any disposition of properties.

We may seek to dispose of properties that no longer meet our strategic plans with the intent to use the proceeds generated from such potential disposition to acquire additional properties better aligned with our investment criteria and growth strategy or to fund other operational needs. We may not be able to dispose of these properties for the proceeds we expect, or at all, and we may incur costs and divert management attention from our ongoing operations as part of efforts to dispose of these properties, regardless of whether such efforts are ultimately successful. In addition, if we are able to dispose of those properties, we may not be able to re-deploy the proceeds in a timely or more efficient manner, if at all. As such, we may not be able to adequately time any decrease in revenues from the sale of properties with a corresponding increase in revenues associated with the acquisition of new properties. The failure to dispose of properties, or to timely and more efficiently apply the proceeds from any disposition of properties to attractive acquisition opportunities, could have an adverse effect on our results of operations.

Our operating results may suffer because of development and construction delays and resultant increased costs and risks.

From time to time, we engage in various development and re-development projects where we may be subject to uncertainties associated with re-zoning, environmental concerns of governmental entities and/or community groups, and our builders’ ability to build in conformity with plans, specifications, budgeted costs and timetables. Delays in completing construction could also give tenants the right to terminate pre-construction leases. We may incur additional risks when we make periodic progress payments or other advances to builders before they complete construction. Further, we may incur unanticipated additional costs related to disputes with existing tenants during redevelopment projects. These and other factors can result in increased costs of a project or loss of our investment. In addition, we will be subject to normal lease-up risks relating to newly constructed projects.

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Projects with long lead times may increase leasing risk due to changes in market conditions.

Our real estate development strategies may not be successful.

From time to time, we engage in various development and redevelopment activities to the extent attractive projects become available. When we engage in development activities, we are subject to risks associated with those activities that could adversely affect our financial condition, results of operations and cash flows, including, but not limited to:

•development projects in which we have invested may be abandoned and the related investment will be impaired;

•we may not be able to obtain, or may experience delays in obtaining, all necessary zoning, land-use, building, occupancy and other governmental permits and authorizations;

•we may not be able to obtain land on which to develop;

•we may not be able to obtain financing for development projects, or obtain financing on favorable terms;

•construction costs of a project may exceed the original estimates or construction may not be concluded on schedule, making the project less profitable than originally estimated or not profitable at all (including the possibility of errors or omissions in the project's design, contract default, contractor or subcontractor default, performance bond surety default, the effects of local weather conditions, the possibility of local or national strikes and the possibility of shortages in materials, building supplies or energy and fuel for equipment);

•tenants which pre-lease space or contract with us for a build-to-suit project may default prior to occupying the project;

•upon completion of construction, we may not be able to obtain, or obtain on advantageous terms, permanent financing for activities that we financed through construction loans;

•we may not achieve sufficient occupancy levels and/or obtain sufficient rents to make a completed project profitable; and

•substantial renovation and development activities may require a significant amount of management’s time and attention, diverting their attention from our other operations.

Future terrorist attacks, armed hostilities, or civil unrest in the major metropolitan areas in which we own properties could significantly impact the demand for, and value of, our properties.

Our portfolio of properties is primarily located in the following major metropolitan areas: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York, any of which could be, and some of which have been, the target of terrorist attacks or armed hostilities. Future terrorist attacks and other acts of hostility or war could severely impact the demand for, and value of, our properties. Terrorist attacks, other armed hostilities, or civil unrest in and around any of the major metropolitan areas in which we own properties also could directly impact the value of our properties through damage, destruction, loss, or increased security costs, and could thereafter materially impact the availability or cost of insurance to protect against such acts. Attacks or armed conflicts could result in increased operating costs including building security, property and casualty insurance, and property maintenance. As a result of terrorist activities or other armed hostilities, the cost of insurance coverage for our properties could also increase. In addition, our insurance policies may not recover all our property replacement costs and lost revenue resulting from an attack. A decrease in demand could also make it difficult to renew or re-lease our properties at lease rates equal to or above historical rates. To the extent that any future terrorist attacks or armed hostilities otherwise disrupt our tenants’ businesses, it may impair our tenants’ ability to make timely payments under their existing leases with us, which would harm our operating results.

We face risks related to the occurrence of cyber incidents, or a deficiency in our cybersecurity, which could negatively impact our business by causing a disruption to our operations, a compromise or corruption of our confidential information, and/or damage to our business relationships, all of which could negatively impact our financial results.

A cyber incident is considered to be any adverse event that threatens the confidentiality, integrity, functionality, or availability of our information resources and systems. More specifically, a cyber incident is an intentional attack or an unintentional event that can include gaining unauthorized access to systems to disrupt building or corporate operations, corrupt data, or steal confidential information. While we have not experienced any material cyber incidents in the past, the risk of a security breach or disruption, particularly through cyber attacks or cyber intrusion, including by computer hackers, foreign governments and cyber terrorists, has generally increased as the number, intensity and sophistication of attempted attacks and intrusions from around the world have increased. As our reliance on technology has increased, so have the risks posed to our systems, both internal and those we have outsourced. Risks that could directly result from the occurrence of a cyber incident include physical harm to occupants of our buildings, physical damage to our buildings, actual cash loss, operational interruption, damage to our relationship and reputation with our tenants, potential errors from misstated financial reports, violations of loan covenants, missed reporting deadlines, and private data exposure, among others. Any or all of the preceding risks could have a material adverse effect on our results of operations, financial condition and cash flows.

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Insider or employee cyber and security threats are increasingly a concern for all companies, including ours. In addition, social engineering and phishing are a particular concern for companies with employees. We are continuously working to install new networks and to upgrade our existing networks, building operating and information technology systems, and to train employees against phishing, malware and other cyber risks to ensure that we are protected, to the greatest extent possible, against cyber risks and security breaches. However, such upgrades, new technology and training may not be sufficient to protect us from all risks.

We are continuously developing and enhancing our controls, processes, and practices designed to protect our systems, computers, software, data, and networks from attack, damage, or unauthorized access. This continued development and enhancement will require us to expend additional resources, including to investigate and remediate any information security vulnerabilities that may be detected. Although we make efforts to maintain the security and integrity of these types of information technology networks and related systems, and despite various measures we have implemented to manage the risk of a security breach or disruption, there can be no assurance that our security efforts and measures will be effective or that attempted security breaches or disruptions would not be successful or damaging. Even the most well protected information, networks, systems and facilities remain potentially vulnerable because the techniques used in such attempted security breaches evolve and generally are not recognized until launched against a target, and in some cases are designed to not be detected. Accordingly, we may be unable to anticipate these techniques or to implement adequate security barriers or other preventative measures, and thus it is impossible for us to entirely mitigate this risk.

Further, one or more of our tenants could experience a cyber incident which could impact their operations and ability to perform under the terms of their lease with us.

Uninsured losses or losses in excess of our insurance coverage could adversely affect our financial condition and our cash flow, and there can be no assurance as to future costs and the scope of coverage that may be available under insurance policies.

We carry comprehensive general liability, fire, rental loss, environmental, cybersecurity, and umbrella liability coverage on all of our properties and earthquake, wind, and flood coverage on properties in areas where such coverage is warranted. We believe the policy specifications and insured limits of these policies are adequate and appropriate given the relative risk of loss, the cost of the coverage, and industry practice. However, we may be subject to certain types of losses, those that are generally catastrophic in nature, such as losses due to wars, conventional or cyber terrorism, armed hostilities, chemical, biological, nuclear and radiation (“CBNR”) acts of terrorism and, in some cases, earthquakes, hurricanes, and flooding, either because such coverage is not available or is not available at commercially reasonable rates. If we experience a loss that is uninsured or that exceeds policy limits, we could lose a significant portion of the capital we have invested in the damaged property, as well as the anticipated future revenue from the property. Inflation, changes in building codes and ordinances, environmental considerations, and other factors also might make it impractical or undesirable to use insurance proceeds to replace a property after it has been damaged or destroyed. In addition, if the damaged properties are subject to recourse indebtedness, we would continue to be liable for the indebtedness, even if these properties were irreparably damaged. Furthermore, we may not be able to obtain adequate insurance coverage at reasonable costs in the future, as the costs associated with property and casualty renewals may be higher than anticipated.

In addition, insurance risks associated with potential terrorist acts could sharply increase the premiums we pay for coverage against property and casualty claims. Under the Terrorism Risk Insurance Act, which is currently effective through December 31, 2027, United States insurers cannot exclude conventional (non-CBNR) terrorism losses and must make terrorism insurance available under their property and casualty insurance policies. However, this legislation does not regulate the pricing of such insurance. In some cases, lenders may insist that commercial property owners purchase coverage against terrorism as a condition of providing financing. Such insurance policies may not be available at a reasonable cost, which could inhibit our ability to finance or refinance our properties. In such instances, we may be required to provide other financial support, either through financial assurances or self-insurance, to cover potential losses. We may not have adequate coverage for such losses.

Should one of our insurance carriers become insolvent, we would be adversely affected.

We carry several different lines of insurance, placed with several large insurance carriers. If any one of these large insurance carriers were to become insolvent, we would be forced to replace the existing insurance coverage with another suitable carrier, and any outstanding claims would be at risk for collection. In such an event, we cannot be certain that we would be able to replace the coverage at similar or otherwise favorable terms. Replacing insurance coverage at unfavorable rates and the potential of uncollectible claims due to carrier insolvency could adversely impact our results of operations and cash flows.

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Our joint venture investments could be adversely affected by a lack of sole decision-making authority and our reliance on joint venture partners’ financial condition.

From time to time we may enter into strategic joint ventures with institutional investors to acquire, develop, improve, or dispose of properties, thereby reducing the amount of capital required by us to make investments and diversifying our capital sources for growth. Such joint venture investments involve risks not otherwise present in a wholly-owned property, development, or redevelopment project, including but not limited to the following:

•in these investments, we may not have exclusive control over the development, financing, leasing, management, and other aspects of the project, which may prevent us from taking actions that are opposed by our joint venture partners;

•joint venture agreements often restrict the transfer of a co-venturer’s interest or may otherwise restrict our ability to sell the interest when we desire or on advantageous terms;

•we may not be in a position to exercise sole decision-making authority regarding the property or joint venture, which could create the potential risk of creating impasses on decisions, such as acquisitions or sales;

•such co-venturer may, at any time, have economic or business interests or goals that are, or that may become, inconsistent with our business interests or goals;

•such co-venturer may be in a position to take action contrary to our instructions, requests, policies or objectives, including our current policy with respect to maintaining our qualification as a REIT;

•the possibility that our co-venturer in an investment might become bankrupt, which would mean that we and any other remaining co-venturers would generally remain liable for the joint venture’s liabilities;

•our relationships with our co-venturers are contractual in nature and may be terminated or dissolved under the terms of the applicable joint venture agreements and, in such event, we may not continue to own or operate the interests or assets underlying such relationship or may need to purchase such interests or assets at a premium to the market price to continue ownership;

•disputes between us and our co-venturers may result in litigation or arbitration that would increase our expenses and prevent our officers and directors from focusing their time and efforts on our business and could result in subjecting the properties owned by the applicable joint venture to additional risk; or

•we may, in certain circumstances, be liable for the actions of our co-venturers, and the activities of a joint venture could adversely affect our ability to qualify as a REIT, even though we do not control the joint venture.

Any of the above might subject a property to liabilities in excess of those contemplated and thus reduce the returns to our investors.

Costs of complying with governmental laws and regulations may reduce our net income.

All real property and the operations conducted on real property are subject to federal, state, and local laws and regulations relating to environmental protection and human health and safety. In addition, under the Americans with Disabilities Act ("ADA"), places of public accommodation must meet certain federal requirements related to access and use by disabled persons. Tenants’ ability to operate and to generate income to pay their lease obligations may be affected by permitting and compliance obligations arising under such laws and regulations. Some of these laws and regulations may impose joint and several liability on tenants, owners, or operators for the costs to investigate or remediate contaminated properties, regardless of fault or whether the acts causing the contamination were legal. Noncompliance with ADA could result in the imposition of fines by the federal government or the award of damages to private litigants. In addition, the presence of hazardous substances, or the failure to properly remediate these substances, may hinder our ability to sell, rent, or pledge such property as collateral for future borrowings.

Compliance with new laws or regulations or stricter interpretation of existing laws by agencies or the courts may require us to incur material expenditures or may impose additional liabilities on us, including environmental liabilities. In addition, there are various local, state, and federal fire, health, life-safety, and similar regulations with which we may be required to comply, and which may subject us to liability in the form of fines or damages for noncompliance. Although we believe that our properties are currently in material compliance with these regulatory requirements, we have not conducted an audit or investigation of all of our properties to determine our compliance, and we cannot predict the ultimate cost of compliance. Any material expenditures, liabilities, fines, or damages we must pay will reduce our net income and cash flows.

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Index to Financial Statements

As the present or former owner or operator of real property, we could become subject to liability for environmental contamination, regardless of whether we caused such contamination.

Under various federal, state, and local environmental laws, ordinances, and regulations, a current or former owner or operator of real property may be liable for the cost to remove or remediate hazardous or toxic substances, wastes, or petroleum products on, under, from, or in such property. These costs could be substantial and liability under these laws may attach whether or not the owner or operator knew of, or was responsible for, the presence of such contamination. As a result, our tenants’ operations, the existing condition of land when we buy it, operations in the vicinity of our properties such as the presence of underground storage tanks or activities of unrelated third parties may affect our properties. Even if more than one party may have been responsible for the contamination, each liable party may be held entirely responsible for all of the clean-up costs incurred. In addition, third parties may sue the owner or operator of a property for damages based on personal injury, natural resources, or property damage and/or for other costs, including investigation and clean-up costs, resulting from the environmental contamination. The presence of contamination on one of our properties, or the failure to properly remediate a contaminated property, could give rise to a lien in favor of the government for costs it may incur to address the contamination, or otherwise adversely affect our ability to sell or lease the property or borrow using the property as collateral. In addition, if contamination is discovered on our properties, environmental laws may impose restrictions on the manner in which property may be used or businesses may be operated, and these restrictions may require substantial expenditures or prevent us from entering into leases with prospective tenants.

Some of our properties are adjacent to or near other properties that have contained or currently contain underground storage tanks used to store petroleum products or other hazardous or toxic substances. In addition, certain of our properties are on, adjacent to, or near sites upon which others, including former owners or tenants of our properties, have engaged, or may in the future engage, in activities that have released or may have released petroleum products or other hazardous or toxic substances.

The cost of defending against claims of liability, of remediating any contaminated property, or of paying personal injury claims could reduce our net income and cash flows.

We could become subject to liability for adverse environmental conditions in the buildings on our property.

Some of our properties have building materials that contain asbestos. Environmental laws require that owners or operators of buildings containing asbestos properly manage and maintain the asbestos, adequately inform or train those who may come into contact with asbestos, and undertake special precautions, including removal or other abatement, in the event that asbestos is disturbed during building renovation or demolition. These laws may impose fines and penalties on building owners or operators who fail to comply with these requirements. In addition, environmental laws and the common law may allow third parties to seek recovery from owners or operators for personal injury associated with exposure to asbestos.

The properties also may contain or develop harmful mold or suffer from other air quality issues. Any of these materials or conditions could result in liability for personal injury and costs of remediating adverse conditions, which could have an adverse effect on our results of operations or cash flows.

As the owner of real property, we could become subject to liability for a tenant’s failure to comply with environmental requirements regarding the handling and disposal of regulated substances and wastes or for non-compliance with health and safety requirements, which requirements are subject to change.

Some of our tenants may handle regulated substances and wastes as part of their operations at our properties. Environmental laws regulate the handling, use, and disposal of these materials and subject our tenants, and potentially us, to liability resulting from non-compliance with these requirements. The properties in our portfolio also are subject to various federal, state, and local health and safety requirements, such as state and local fire requirements. If we or our tenants fail to comply with these various requirements, we might incur governmental fines or private damage awards. Moreover, we do not know whether or the extent to which existing requirements or their enforcement will change or whether future requirements will require us to make significant unanticipated expenditures, either of which could materially and adversely impact our financial condition, results of operations or cash flows. If our tenants become subject to liability for noncompliance, it could affect their ability to make rental payments to us.

We face possible risks associated with the physical effects of climate change.

The physical effects of climate change could have a material adverse effect on our properties, operations, and business. The majority of our portfolio of properties is located along the Eastern coast of the United States. To the extent that climate change causes variations in weather patterns, our markets could experience increases in storm intensity, larger flood zones, and/or rising sea-levels. Over time, these conditions could result in physical damage to our buildings or a decline in demand for office

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space in our buildings. Climate change could also indirectly negatively impact our business by causing increased costs associated with property and casualty or flood insurance, energy, or storm cleanup.

We may face possible risks associated with the transition to a lower-carbon economy.

Transitioning to a lower-carbon economy may entail extensive policy, legal, technological, and market changes to address mitigation and adaption requirements related to climate change. Depending on the nature, speed, and focus of these changes, transition risks may pose varying levels of financial and reputational risk to us and/or our tenants. Policy action around climate change such as implementing carbon-pricing mechanisms to reduce green house gas emission, shifting energy use toward lower emission sources, adopting energy-efficiency solutions, encouraging greater water efficiency measures, and promoting more sustainable land-use practices can result in financial impacts to both us and our tenants. Alterations to third-party certifications/ratings may impact investor or tenant demand and consequential valuation for buildings with lower scoring. Climate related litigation claims can result in financial and reputational damage. Technology improvements or innovations that support the transition to a lower-carbon, energy efficient economic system and shifts in supply and demand for certain commodities, products, and services as climate-related risks and opportunities are increasingly taken into account may affect the strength and competitiveness of our tenants' business, and ultimately their ability to meet their rental obligations to us. Climate change has also been identified as a potential source of reputational risk tied to changing customer or community perceptions of an organization's contribution to or detraction from the transition to a lower-carbon economy.

We depend on key personnel, each of whom would be difficult to replace.

Our continued success depends to a significant degree upon the continued contributions of certain key personnel, each of whom would be difficult to replace. Our ability to retain our management team, or to attract suitable replacements should any member of the management team leave, is dependent on the competitive nature of the employment market. The loss of services of one or more key members of our management team could adversely affect our results of operations and slow our future growth. While we have planned for the succession of each of the key members of our management team, our succession plans may not effectively prevent any adverse effects from the loss of any member of our management team. We have not obtained and do not expect to obtain “key person” life insurance on any of our key personnel.

We may be subject to litigation, which could have a material adverse effect on our financial condition.

From time to time, we may be subject to legal action arising in the ordinary course of our business or otherwise. Such action could distract key personnel from management of the company and result in additional expenses which, if uninsured, could adversely impact our earnings and cash flows, thereby impacting our ability to service our debt and make quarterly distributions to our stockholders. There can be no assurance that our insurance policies will fully cover any payments or legal costs associated with any potential legal action. Further, the ultimate resolution of such action could impact the availability or cost of some of our insurance coverage, which could adversely impact our results of operations and cash flows, expose us to increased risks that would be uninsured, and/or adversely impact our ability to attract officers and directors.

If our disclosure controls or internal controls over financial reporting are not effective, investors could lose confidence in our reported financial information.

The design and effectiveness of our disclosure controls and procedures and our internal control over financial reporting may not prevent all errors, misstatements, or misrepresentations. Although management will continue to review the effectiveness of our disclosure controls and procedures and our internal control over financial reporting, there can be no guarantee that these processes will be effective in accomplishing all control objectives all of the time. Deficiencies, including any material weakness, in our internal control over financial reporting which may occur in the future could result in misstatements of our results of operations, restatements of our financial statements, a decline in the trading price of our common stock, or otherwise materially adversely affect our business, reputation, results of operations, financial condition, or liquidity.

Risks Related to Our Organization and Structure

Our organizational documents contain provisions that may have an anti-takeover effect, which may discourage third parties from conducting a tender offer or seeking other change of control transactions that could involve a premium price for our common stock or otherwise benefit our stockholders.

Our charter and bylaws contain provisions that may have the effect of delaying, deferring, or preventing a change in control of our company (including an extraordinary transaction such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for our common stock or otherwise be in the best interest of our stockholders. These provisions include, among other things, restrictions on the ownership and transfer of our stock, advance notice requirements for

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Index to Financial Statements

stockholder nominations for directors and other business proposals, and our board of directors’ power to classify or reclassify unissued shares of common or preferred stock and issue additional shares of common or preferred stock.

In order to preserve our REIT status, our charter limits the number of shares a person may own, which may discourage a takeover that could result in a premium price for our common stock or otherwise benefit our stockholders.

Our charter, with certain exceptions, authorizes our directors to take such actions as are necessary and desirable to preserve our qualification as a REIT for federal income tax purposes. Unless exempted by our board of directors, no person may actually or constructively own more than 9.8% (by value or number of shares, whichever is more restrictive) of the outstanding shares of our common stock or the outstanding shares of any class or series of our preferred stock, which may inhibit large investors from desiring to purchase our stock. This restriction may have the effect of delaying, deferring, or preventing a change in control, including an extraordinary transaction (such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for our common stock or otherwise be in the best interest of our stockholders.

Our board of directors can take many actions without stockholder approval.

Our board of directors has overall authority to oversee our operations and determine our major corporate policies. This authority includes significant flexibility. For example, our board of directors can do the following:

•within the limits provided in our charter, prevent the ownership, transfer, and/or accumulation of stock in order to protect our status as a REIT or for any other reason deemed to be in our best interest and the interest of our stockholders;

•issue additional shares of stock without obtaining stockholder approval, which could dilute the ownership of our then-current stockholders;

•amend our charter to increase or decrease the aggregate number of shares of stock or the number of shares of stock of any class or series that we have authority to issue, without obtaining stockholder approval;

•classify or reclassify any unissued shares of our common or preferred stock and set the preferences, rights and other terms of such classified or reclassified shares, without obtaining stockholder approval;

•employ and compensate affiliates;

•direct our resources toward investments, which ultimately may not appreciate over time;

•change creditworthiness standards with respect to our tenants;

•change our investment or borrowing policies;

•determine that it is no longer in our best interest to attempt to qualify, or to continue to qualify, as a REIT; and

•suspend, modify or terminate the dividend reinvestment plan.

Any of these actions could increase our operating expenses, impact our ability to make distributions, or reduce the value of our assets without giving our stockholders the right to vote.

Our charter permits our board of directors to issue stock with terms that may subordinate the rights of our common stockholders, which may discourage a third party from acquiring us in a manner that could result in a premium price for our common stock or otherwise benefit our stockholders.

Our board of directors may, without stockholder approval, issue authorized but unissued shares of our common or preferred stock and amend our charter to increase or decrease the aggregate number of shares of stock or the number of shares of stock of any class or series that we have authority to issue. In addition, our board of directors may, without stockholder approval, classify or reclassify any unissued shares of our common or preferred stock and set the preferences, rights and other terms of such classified or reclassified shares. Thus, our board of directors could authorize the issuance of preferred stock with terms and conditions that could have priority with respect to distributions and amounts payable upon liquidation over the rights of the holders of our common stock. Such preferred stock also could have the effect of delaying, deferring, or preventing a change in control, including an extraordinary transaction (such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for our common stock, or otherwise be in the best interest of our stockholders.

Our board of directors could elect for us to be subject to certain Maryland law limitations on changes in control that could have the effect of preventing transactions in the best interest of our stockholders.

Certain provisions of Maryland law may have the effect of inhibiting a third party from making a proposal to acquire us or of impeding a change of control under certain circumstances that otherwise could provide the holders of shares of our common stock with the opportunity to realize a premium over the then-prevailing market price of such shares, including:

•“business combination” provisions that, subject to limitations, prohibit certain business combinations between us and an “interested stockholder” (defined generally as any person who beneficially owns 10% or more of the voting power

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Index to Financial Statements

of our outstanding voting stock or any affiliate or associate of ours who, at any time within the two-year period prior to the date in question, was the beneficial owner of 10% or more of the voting power of our then outstanding stock) or an affiliate thereof for five years after the most recent date on which the stockholder becomes an interested stockholder and thereafter impose supermajority voting requirements on these combinations; and

•“control share” provisions that provide that “control shares” of our company (defined as shares which, when aggregated with other shares controlled by the stockholder, except solely by virtue of a revocable proxy, entitle the stockholder to exercise one of three increasing ranges of voting power in electing directors) acquired in a “control share acquisition” (defined as the direct or indirect acquisition of ownership or control of “control shares”) have no voting rights except to the extent approved by our stockholders by the affirmative vote of at least two-thirds of all the votes entitled to be cast on the matter, excluding all interested shares.

Our bylaws contain a provision exempting any acquisition by any person of shares of our stock from the control share acquisition statute, and our board of directors has adopted a resolution exempting any business combination with any person from the business combination statute. As a result, these provisions currently will not apply to a business combination or control share acquisition involving our company. However, our board of directors may opt into the business combination provisions and the control share provisions of Maryland law in the future.

Our charter, our bylaws, the limited partnership agreement of our operating partnership, and Maryland law also contain other provisions that may delay, defer, or prevent a transaction or a change of control that might involve a premium price for our common stock or otherwise be in the best interest of our stockholders. In addition, the employment agreements with certain of our executive officers contain, and grants under our incentive plan also may contain, change-in-control provisions that might similarly have an anti-takeover effect, inhibit a change of our management, or inhibit in certain circumstances tender offers for our common stock or proxy contests to change our board.

Our rights and the rights of our stockholders to recover claims against our directors and officers are limited, which could reduce our recovery and our stockholders’ recovery against them if they negligently cause us to incur losses.

Maryland law provides that a director or officer has no liability in that capacity if he or she performs his or her duties in good faith, in a manner he or she reasonably believes to be in our best interest and with the care that an ordinarily prudent person in a like position would use under similar circumstances. Our charter eliminates our directors’ and officers’ liability to us and our stockholders for money damages except for liability resulting from actual receipt of an improper benefit or profit in money, property, or services or active and deliberate dishonesty established by a final judgment and which is material to the cause of action. Our charter and bylaws require us to indemnify our directors and officers to the maximum extent permitted by Maryland law for any claim or liability to which they may become subject or which they may incur by reason of their service as directors or officers, except to the extent that the act or omission of the director or officer was material to the matter giving rise to the proceeding and was committed in bad faith or was the result of active and deliberate dishonesty, the director or officer actually received an improper personal benefit in money, property, or services, or, in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful. As a result, we and our stockholders may have more limited rights against our directors and officers than might otherwise exist under common law, which could reduce our and our stockholders’ recovery from these persons if they act in a negligent manner. In addition, we may be obligated to fund the defense costs incurred by our directors and officers (as well as by our employees and agents) in some cases.

Risks Related to Tax Matters

Our failure to qualify as a REIT could adversely affect our operations and our ability to make distributions.

We are owned and operated in a manner intended to qualify us as a REIT for U.S. federal income tax purposes; however, we do not have a ruling from the IRS as to our REIT status. In addition, we own all of the common stock of a subsidiary that has elected to be treated as a REIT, and if our subsidiary REIT were to fail to qualify as a REIT, it is possible that we also would fail to qualify as a REIT unless we (or the subsidiary REIT) could qualify for certain relief provisions. Our qualification and the qualification of our subsidiary REIT as a REIT will depend on satisfaction, on an annual or quarterly basis, of numerous requirements set forth in highly technical and complex provisions of the Code for which there are only limited judicial or administrative interpretations. A determination as to whether such requirements are satisfied involves various factual matters and circumstances not entirely within our control. The fact that we hold substantially all of our assets through our operating partnership and its subsidiaries further complicates the application of the REIT requirements for us. No assurance can be given that we, or our subsidiary REIT, will qualify as a REIT for any particular year.

If we, or our subsidiary REIT, were to fail to qualify as a REIT in any taxable year for which a REIT election has been made, the non-qualifying REIT would not be allowed a deduction for dividends paid to its stockholders in computing our taxable income and would be subject to U.S. federal income tax on its taxable income at corporate rates. Moreover, unless the non-

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Index to Financial Statements

qualifying REIT were to obtain relief under certain statutory provisions, the non-qualifying REIT also would be disqualified from treatment as a REIT for the four taxable years following the year during which qualification is lost. This treatment would reduce our net earnings available for investment or distribution to our stockholders because of the additional tax liability to us for the years involved. As a result of such additional tax liability, we might need to borrow funds or liquidate certain investments on terms that may be disadvantageous to us in order to pay the applicable tax.

Changes in tax laws may eliminate the benefits of REIT status, prevent us from maintaining our qualification as a REIT, or otherwise adversely affect our stockholders.

New legislation, regulations, administrative interpretations or court decisions could change the tax laws or interpretations of the tax laws regarding qualification as a REIT, or the federal income tax consequences of that qualification, in a manner that is materially adverse to our stockholders. In particular, the Tax Cuts and Jobs Act ("H.R. 1"), which was effective for us for tax year 2018, made many significant changes to the U.S. federal income tax laws. A number of the changes that affected noncorporate taxpayers will expire at the end of 2025 unless Congress acts to extend them. Among other changes, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), signed into law on March 27, 2020, makes certain changes to H.R.1. These changes impacted us, our stockholders, and our tenants in various ways and the IRS continues to issue clarifying guidance with respect to certain of the provisions of H.R. 1 and the CARES Act, any of which may be adverse or potentially adverse compared to prior law. Additional changes to tax laws are likely to continue to occur in the future. Accordingly, there is no assurance that we can continue to operate with the current benefits of our REIT status or that a change to the tax laws will not adversely affect the taxation of our stockholders. If there is a change in the tax laws that prevents us from qualifying as a REIT, that eliminates REIT status generally, or that requires REITs generally to pay corporate level income taxes, our results of operations may be adversely affected and we may not be able to make the same level of distributions to our stockholders, and changes to the taxation of our stockholders could have an adverse effect on an investment in our common stock.

Even if we qualify as a REIT, we may incur certain tax liabilities that would reduce our cash flow and impair our ability to make distributions.

Even if we maintain our status as a REIT, we may be subject to U.S. federal income taxes or state taxes, which would reduce our cash available for distribution to our stockholders. For example, we will be subject to federal income tax on any undistributed taxable income. Further, if we fail to distribute during each calendar year at least the sum of (a) 85% of our ordinary income for such year, (b) 95% of our net capital gain income for such year, and (c) any undistributed taxable income from prior periods, we will be subject to a 4% excise tax on the excess of the required distribution over the sum of (i) the amounts actually distributed by us, plus (ii) retained amounts on which we pay income tax at the corporate level. If we realize net income from foreclosure properties that we hold primarily for sale to customers in the ordinary course of business, we must pay tax thereon at the highest corporate income tax rate, and if we sell a property, other than foreclosure property, that we are determined to have held for sale to customers in the ordinary course of business, any gain realized would be subject to a 100% “prohibited transaction” tax. The determination as to whether or not a particular sale is a prohibited transaction depends on the facts and circumstances related to that sale. We cannot guarantee that sales of our properties would not be prohibited transactions unless we comply with certain safe-harbor provisions. The need to avoid prohibited transactions could cause us to forgo or defer sales of properties that might otherwise be in our best interest to sell. In addition, we own interests in certain taxable REIT subsidiaries that are subject to federal income taxation and we and our subsidiaries may be subject to state and local taxes on our income or property.

Differences between the recognition of taxable income and the actual receipt of cash could require us to sell assets or borrow funds on a short-term or long-term basis to meet the distribution requirements of the Code.

We intend to make distributions to our stockholders to comply with the requirements of the Code for REITs and to minimize or eliminate our corporate tax obligations; however, differences between the recognition of taxable income and the actual receipt of cash could require us to sell assets or borrow funds on a short-term or long-term basis to meet the distribution requirements of the Code. Certain types of assets generate substantial disparity between taxable income and available cash, such as real estate that has been financed through financing structures which require some or all of available cash flows to be used to service borrowings. In addition, changes made by H.R. 1 will require us to accrue certain income for U.S. federal income tax purposes no later than when such income is taken into account as revenue on our financial statement (subject to an exception for certain income that is already subject to a special method of accounting under the Code). This could cause us to recognize taxable income prior to the receipt of the associated cash. H.R. 1 also includes limitations on the deductibility of certain compensation paid to our executives, certain interest payments, and certain net operating loss carryforwards, each of which could potentially increase our taxable income and our required distributions. However, under H.R. 1, as modified by the CARES Act, federal net operating losses incurred in taxable years beginning after December 31, 2017 can be carried forward indefinitely. Net operating

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Index to Financial Statements

losses of a REIT may not be carried back to any taxable year, regardless of whether the taxpayer qualified as a REIT in such taxable year. In addition, beginning after December 31, 2017, H.R. 1 had limited the deduction of net operating losses to 80% of current year taxable income (determined without regard to the deduction for dividends paid). The CARES Act eliminates this 80% limitation for taxable years beginning before January 1, 2021. As a result, the requirement to distribute a substantial portion of our taxable income could cause us to: (1) sell assets in adverse market conditions, (2) borrow on unfavorable terms, or (3) distribute amounts that would otherwise be invested in future acquisitions, capital expenditures, or repayment of debt, in order to comply with REIT requirements. Any such actions could increase our costs and reduce the value of our common stock. Further, we may be required to make distributions to our stockholders when it would be more advantageous to reinvest cash in our business or when we do not have funds readily available for distribution. Compliance with REIT qualification requirements may, therefore, hinder our ability to operate solely on the basis of maximizing profits.

Distributions made by REITs do not qualify for the reduced tax rates that apply to certain other corporate distributions.

The maximum income tax rate for dividends paid by corporations to individuals, trusts and estates is generally 20%. Dividends paid by REITs, however, (other than distributions we properly designate as capital gain dividends or as qualified dividend income) are taxed at the normal income tax rate applicable to the individual recipient (currently a maximum rate of 37%) rather than the 20% preferential rate, subject to a deduction equal to 20% of the amount of certain “qualified REIT dividends” that is available to noncorporate taxpayers through 2025, which has the effect of reducing the maximum effective income tax rate on qualified REIT dividends to 29.6%. The more favorable rates applicable to regular corporate dividends could cause investors who are individuals to perceive investments in REITs to be relatively less attractive than investments in non-REIT corporations that make distributions, particularly after the scheduled expiration of the 20% deduction applicable to qualified REIT dividends on December 31, 2025.

A recharacterization of transactions undertaken by our operating partnership may result in lost tax benefits or prohibited transactions, which would diminish cash distributions to our stockholders, or even cause us to lose REIT status.

The IRS could recharacterize transactions consummated by our operating partnership, which could result in the income realized on certain transactions being treated as gain realized from the sale of property that is held as inventory or otherwise held primarily for the sale to customers in the ordinary course of business. In such event, the gain would constitute income from a prohibited transaction and would be subject to a 100% tax. If this were to occur, our ability to make cash distributions to our stockholders would be adversely affected. Moreover, our operating partnership may purchase properties and lease them back to the sellers of such properties. While we will use our best efforts to structure any such sale-leaseback transaction such that the lease will be characterized as a “true lease,” thereby allowing us to be treated as the owner of the property for federal income tax purposes, we can give stockholders no assurance that the IRS will not attempt to challenge such characterization. In the event that any such sale-leaseback transaction is challenged and recharacterized as a financing transaction or loan for U.S. federal income tax purposes, deductions for depreciation and cost recovery relating to such property would be disallowed. If a sale-leaseback transaction were so recharacterized, the amount of our adjusted REIT taxable income could be recalculated, which might cause us to fail to meet the distribution requirement for a taxable year. We also might fail to satisfy the REIT qualification asset tests or income tests and, consequently, lose our REIT status. Even if we maintain our status as a REIT, an increase in our adjusted REIT taxable income could cause us to be subject to additional federal and state income and excise taxes. Any federal or state taxes we pay will reduce our cash available for distribution to our stockholders.

We face possible adverse changes in state and local tax laws regarding the treatment of REITs and their stockholders, which may result in an increase in our tax liability.

From time to time, changes in state and local tax laws or regulations are enacted, including changes to a state’s treatment of REITs and their stockholders, which may result in an increase in our tax liability. Any shortfall in tax revenues for states and municipalities may lead to an increase in the frequency and size of such changes. If such changes occur, we may be required to pay additional taxes on our assets or income. These increased tax costs could adversely affect our financial condition and results of operations and the amount of cash available for payment of dividends.

Property taxes may decrease returns on real estate.

Real property owned by us will be subject to real property taxes and, in some instances, personal property taxes or franchise taxes. Such real and personal property taxes and franchise taxes may increase as property tax or franchise tax rates change and as the properties are assessed or reassessed by taxing authorities. An increase in property taxes on or franchise taxes related to our real property could affect adversely our financial condition, results of operations, cash flow and ability to make distributions to stockholders and could decrease the value of that real property.

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Risks Associated with Debt Financing

We have incurred and are likely to continue to incur mortgage and other indebtedness, which may increase our business risks.

As of December 31, 2020, we had total outstanding indebtedness of approximately $1.6 billion and a total debt to gross assets ratio of 34.4%. Although the instruments governing our unsecured and secured indebtedness limit our ability to incur additional indebtedness, these restrictions are subject to a number of qualifications and exceptions and, under certain circumstances, debt incurred in compliance with these restrictions could be substantial. We may incur additional indebtedness to acquire properties or other real estate-related investments, to fund property improvements, and other capital expenditures or for other corporate purposes, such as to repurchase shares of our common stock through repurchase programs that our board of directors have authorized or to fund future distributions to our stockholders.

Significant borrowings by us increase the risks of an investment in us. Our ability to make payments on our indebtedness and to fund our operations, working capital and capital expenditures, depends on our ability to generate cash in the future. Our cash flow is subject to general economic, industry, financial, competitive, operating, legislative, regulatory and other factors, many of which are beyond our control. Our failure to pay amounts due with respect to any of our indebtedness may constitute an event of default under the instrument governing that indebtedness, which could permit the holders of that indebtedness to require the immediate repayment of that indebtedness in full and, in the case of secured indebtedness, could allow them to sell the collateral securing that indebtedness and use the proceeds to repay that indebtedness. For example, defaults on indebtedness secured by a property may result in lenders initiating foreclosure actions. Although no such instances exist as of December 31, 2020, if we were to default on our indebtedness, we could lose the property securing the loan that is in default. For tax purposes, a foreclosure of any of our properties would be treated as a sale of the property for a purchase price equal to the outstanding balance of the debt secured by the mortgage. If the outstanding balance of the debt secured by the mortgage exceeds our tax basis in the property, we would recognize taxable income on foreclosure, but we would not receive any cash proceeds.

Moreover, any acceleration of, or default, with respect to any of our indebtedness could, in turn, constitute an event of default under other debt instruments or agreements, thereby resulting in the acceleration and required repayment of that other indebtedness. In addition, while we do not currently anticipate doing so, we may give full or partial guarantees to lenders of mortgage debt on behalf of the entities that own our properties if circumstances warrant that action. If we were to give a guaranty on behalf of an entity that owns one of our properties, we would be responsible to the lender for satisfaction of the debt if it were not paid by such entity. If any mortgages or other indebtedness contain cross-collateralization or cross-default provisions, a default on a single loan could affect multiple properties. If any of our properties are foreclosed on due to a default, our ability to pay cash distributions to our stockholders will be limited.

In the future, we may need to refinance all or a portion of our indebtedness on or before maturity. Our ability to refinance our indebtedness or obtain additional financing will depend on, among other things our financial condition, results of operations and market conditions at the time; and restrictions in the agreements governing our indebtedness. As a result, we may not be able to refinance our indebtedness on commercially reasonable terms, or at all. If we do not generate sufficient cash flow from operations, and additional borrowings or refinancings or proceeds of assets sales or other sources of cash are not available to us, we may not have sufficient cash to enable us to meet all of our obligations. Accordingly, if we cannot service our indebtedness, we may have to take actions such as seeking additional equity financing, delaying capital expenditures or strategic acquisitions and alliances. Any of these events or circumstances could have a material adverse effect on our financial condition, results of operations, cash flows, the trading price of our securities and our ability to satisfy our debt service obligations.

High interest rates may make it difficult for us to finance or refinance properties, which could reduce the number of properties we can acquire, our net income, and the amount of cash distributions we can make.

If debt financing is unavailable at reasonable rates, we may not be able to finance the purchase of properties. If we place mortgage debt on properties, we run the risk of being unable to refinance the properties when the loans become due, or of being unable to refinance on favorable terms. If interest rates are higher when we refinance our properties, our income could be reduced. We may be unable to refinance properties. If any of these events occur, our cash flow could be reduced. This, in turn, could reduce cash available for distribution to our stockholders and may hinder our ability to raise more capital by issuing more stock or by borrowing more money.

Agreements governing our existing indebtedness contain, and future financing arrangements will likely contain, restrictive covenants relating to our operations, which could limit our ability to make distributions to our stockholders.

We are subject to certain restrictions pursuant to the restrictive covenants of our outstanding indebtedness, which may affect our distribution and operating policies and our ability to incur additional debt. Loan documents evidencing our existing

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indebtedness contain, and loan documents entered into in the future will likely contain, certain operating covenants that limit our ability to further mortgage the property or discontinue insurance coverage. In addition, the agreements governing our existing indebtedness contain financial covenants, including certain coverage ratios and limitations on our ability to incur secured and unsecured debt, make dividend payments, sell all or substantially all of our assets, and engage in mergers and consolidations and certain acquisitions. Covenants under our existing indebtedness do, and under any future indebtedness likely will, restrict our ability to pursue certain business initiatives or certain acquisition transactions. In addition, failure to meet any of these covenants, including the financial coverage ratios, could cause an event of default under and/or accelerate some or all of our indebtedness, which would have a material adverse effect on us.

Increases in interest rates would increase the amount of our variable-rate debt payments and could limit our ability to pay dividends to our stockholders.

Currently, any outstanding draws on our $500 Million Unsecured 2018 Line of Credit and our variable-rate debt instruments which are not subject to hedging under interest rate swap agreements represent our exposure to interest rate changes. In addition, any outstanding draws under the $500 Million Unsecured 2018 Line of Credit are subject to LIBOR locks of various length. However, increases in interest rates could increase our interest costs associated with this variable rate debt to the extent our current locks expire and new balances are drawn under the facility. Such increases would reduce our cash flows and could impact our ability to pay dividends to our stockholders. In addition, if we are required to repay existing debt during periods of higher interest rates, we may need to sell one or more of our investments in order to repay the debt, which might not permit realization of the maximum return on such investments.

Changes in interest rates could have adverse effects on our cash flows as a result of our interest rate derivative contracts.

We have entered into various interest rate derivative agreements to effectively fix our exposure to interest rates under certain of our existing debt facilities. To the extent interest rates are higher than the fixed rate in the respective contract, we would realize cash savings as compared to other market participants. However, to the extent interest rates are below the fixed rate in the respective contract, we would make higher cash payments than other similar market participants, which would have an adverse effect on our cash flows as compared to other market participants.

Additionally, there is counterparty risk associated with entering into interest rate derivative contracts. Should market conditions lead to insolvency or make a merger necessary for one or more of our counterparties, or potential future counterparties, it is possible that the terms of our interest rate derivative contracts will not be honored in their current form with a replacement counterparty. The potential termination or renegotiation of the terms of the interest rate derivative contracts as a result of changing counterparties through insolvency or merger could result in an adverse impact on our results of operations and cash flows.

Changes in the method pursuant to which the LIBOR rates are determined and the phasing out of LIBOR after 2021 may adversely affect our results of operations.

LIBOR and certain other “benchmarks” are the subject of recent national, international and other regulatory guidance and proposals for reform. These reforms may cause such benchmarks to perform differently than in the past or have other consequences which cannot be predicted. In particular, the United Kingdom’s Financial Conduct Authority, which regulates LIBOR, has publicly announced that it intends to stop persuading or compelling banks to submit LIBOR rates after 2021. The cessation date for submission and publication of rates for certain tenors of U.S. dollar LIBOR has since been extended by the ICE Benchmark Administration until mid-2023. While this announcement extends the transition period, the United States Federal Reserve issued a statement advising banks to stop new U.S. dollar LIBOR issuances by the end of 2021. In the United States, the Alternative Reference Rates Committee, which was convened by the Federal Reserve Board and the Federal Reserve Bank of New York, has identified the Secured Overnight Financing Rate (“SOFR”) as its preferred alternative rate for U.S. dollar LIBOR. Financial regulators in the United Kingdom, the European Union, Japan, and Switzerland also have formed working groups with the aim of recommending alternatives to LIBOR denominated in their local currencies. Although SOFR appears to be the preferred replacement rate for U.S. dollar LIBOR, it is unclear if other benchmarks may emerge or if other rates will be adopted outside of the United States.

As of December 31, 2020, approximately $555 million of our outstanding indebtedness had interest rate payments determined directly or indirectly based on LIBOR. In addition, we currently have interest rate swaps with a notional value of $100 million that also use LIBOR as a reference rate. Any uncertainty regarding the continued use and reliability of LIBOR as a benchmark interest rate could adversely affect the performance of LIBOR relative to its historic values. Even if financial instruments are transitioned to alternative benchmarks, such as SOFR, successfully, the new benchmarks are likely to differ from LIBOR, and our interest expense associated with our outstanding floating rate indebtedness or any future indebtedness we incur may

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increase. Transitioning to an alternative benchmark rate, such as SOFR, may result in us incurring significant expense and legal risks, as renegotiation and changes to documentation may be required in effecting the transition.

The replacement or disappearance of LIBOR may adversely affect the value of and costs associated with our LIBOR-based obligations and the availability, pricing and terms of LIBOR-based interest rate swaps we use to hedge our interest rate risk. Alternative reference rates, such as SOFR, may not align with our assets, liabilities, and hedging instruments, which could reduce the effectiveness of certain of our interest rate hedges, and could cause increased volatility in our earnings. We may also incur expenses to amend and adjust our indebtedness and swaps to eliminate any differences between any alternative reference rates used by our interest rate hedges and our outstanding indebtedness. Any of these occurrences could materially and adversely affect our borrowing costs, business and results of operations.

A downgrade in our credit rating could materially adversely affect our business and financial condition.

The credit ratings assigned to our debt securities could change based upon, among other things, our results of operations and financial condition. If any of the credit rating agencies that have rated our debt securities downgrades or lowers its credit rating, or if any credit rating agency indicates that it has placed any such rating on a so-called “watch list” for a possible downgrading or lowering or otherwise indicates that its outlook for that rating is negative, it could have a material adverse effect on our costs and availability of capital, which could in turn have a material adverse effect on our financial condition, results of operations, cash flows and our ability to satisfy our debt service obligations.

General Risks

Any change in our dividend policy could have a material adverse effect on the market price of our common stock.

Distributions are authorized and determined by our board of directors in its sole discretion and depend upon a number of factors, including:

•cash available for distribution;

•our results of operations and anticipated future results of operations;

•our financial condition, especially in relation to our anticipated future capital needs of our properties;

•the level of reserves we establish for future capital expenditures;

•the distribution requirements for REITs under the Code;

•the level of distributions paid by comparable listed REITs;

•our operating expenses; and

•other factors our board of directors deems relevant.

We expect to continue to pay quarterly distributions to our stockholders; however, we bear all expenses incurred by our operations, and our funds generated by operations, after deducting these expenses, may not be sufficient to cover desired levels of distributions to our stockholders. Any change in our distribution policy could have a material adverse effect on the market price of our common stock.

There are significant price and volume fluctuations in the public markets, including on the exchange which we listed our common stock.

The U.S. stock markets, including the NYSE on which our common stock is listed, have historically experienced significant price and volume fluctuations. The market price of our common stock may be highly volatile and could be subject to wide fluctuations and investors in our common stock may experience a decrease in the value of their shares, including decreases unrelated to our operating performance or prospects. If the market price of our common stock declines significantly, stockholders may be unable to resell their shares at or above their purchase price. We cannot assure stockholders that the market price of our common stock will not fluctuate or decline significantly in the future. Some of the factors that could negatively affect our stock price or result in fluctuations in the price or trading volume of our common stock include, but are not limited to, the following:

•changes in the perceived demand for office space;

•actual or anticipated variations in our quarterly operating results;

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•changes in our earnings estimates or publication of research reports about us or the real estate industry, although no assurance can be given that any research reports about us will be published or the accuracy of such reports;

•changes in our dividend policy;

•future sales of substantial amounts of our common stock by our existing or future stockholders;

•increases in market interest rates, which may lead purchasers of our stock to demand a higher yield;

•changes in market valuations of similar companies;

•adverse market reaction to any increased indebtedness we incur in the future;

•additions or departures of key personnel;

•actions by institutional stockholders;

•material, adverse litigation judgments;

•speculation in the press or investment community;

•general market and economic conditions; and

•the realization of any of the other risk factors described in this report.

Future offerings of debt securities, which would be senior to our common stock upon liquidation, or equity securities, which would dilute our existing stockholders and may be senior to our common stock for the purposes of distributions, may adversely affect the market price of our common stock.

We may attempt to increase our capital resources by making additional offerings of debt or equity securities, including medium term notes, senior or subordinated notes and classes of preferred or common stock. Upon liquidation, holders of our debt securities and shares of preferred stock and lenders with respect to other borrowings will receive a distribution of our available assets prior to the holders of our common stock. Additional equity offerings may dilute the holdings of our existing stockholders or reduce the market price of our common stock or both. Because our decision to issue securities in any future offering will depend on market conditions and other factors beyond our control, we cannot predict or estimate the amount, timing or nature of our future offerings. Thus, our stockholders bear the risk of our future offerings reducing the market price of our common stock and diluting their proportionate ownership.

Market interest rates may have an effect on the value of our common stock.

One of the factors that investors may consider in deciding whether to buy or sell our common stock is our distribution rate as a percentage of our share price, relative to market interest rates. If market interest rates increase, prospective investors may desire a higher yield on our common stock or seek securities paying higher dividends or yields. It is likely that the public valuation of our common stock will be based primarily on our earnings and cash flows and not from the underlying appraised value of the properties themselves. As a result, interest rate fluctuations and capital market conditions can affect the market value of our common stock. For instance, if interest rates rise, it is possible that the market price of our common stock will decrease, because potential investors may require a higher dividend yield on our common stock as market rates on interest-bearing securities, such as bonds, rise.

If securities analysts do not publish research or reports about our business or if they downgrade our common stock or our sector, the price of our common stock could decline.

The trading market for our common stock relies in part on the research and reports that industry or financial analysts publish about us or our business. We do not control these analysts. Furthermore, if one or more of the analysts who do cover us downgrades our shares or our industry, or the stock of any of our competitors, the price of our shares could decline. If one or more of these analysts ceases coverage of our company, we could lose attention in the market, which in turn could cause the price of our common stock to decline.

ITEM 1B.    UNRESOLVED STAFF COMMENTS

There were no unresolved SEC staff comments as of December 31, 2020.

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ITEM 2.    PROPERTIES

Overview

As of December 31, 2020, we owned interests in 54 in-service office properties, and approximately 96% of our ALR was generated from select sub-markets located within the following major U.S. office markets: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York, with a majority of such revenue coming from Sunbelt markets. As of December 31, 2020 and 2019, our in-service portfolio was 86.8% and 89.7% (as restated to include one previously out-of-service asset, Two Pierce Place in Itasca, Illinois, which was placed back into service on January 1, 2020) leased, respectively, with an average lease term remaining as of each period end of approximately six years and an average lease size of between 15,000 and 20,000 square feet. Only two tenants account for 5% or more of our ALR; US Bancorp (5.1% of ALR) and State of New York (5.0% of ALR).

ALR related to our in-service portfolio was $515.1 million, or $36.12 per leased square foot, as of December 31, 2020 as compared with $496.2 million, or $33.91 per leased square foot, as of December 31, 2019. These rental rates are presented before consideration of the fact that several of our largest tenants self-perform various aspects of their building management; therefore, we do not count those expenses in our gross rent calculations. If the costs of these functions are added to these leases, our average gross rent for our in-service portfolio as of December 31, 2020, increases to $36.87 per leased square foot.

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Property Statistics

The following table shows the geographic diversification of our in-service portfolio as of December 31, 2020:

Location	Annualized Lease Revenue (in thousands)		Rentable Square Feet (in thousands)	Percentage of Annualized Lease Revenue (%)	Percent Leased (%)
Dallas	$	101,639	3,549	19.7	86.0
Atlanta	90,783		3,388	17.6	84.9
Washington, D.C.	70,204		1,620	13.6	82.0
Minneapolis	65,997		2,104	12.8	93.3
Boston	58,983		1,885	11.5	91.7
Orlando	54,404		1,754	10.6	92.3
New York	50,186		1,029	9.7	93.8
Other (1)	22,942		1,099	4.5	66.1
	$	515,138	16,428	100.0	86.8

(1)Includes 1430 Enclave Parkway and Enclave Place in Houston, Texas; and Two Pierce Place in Chicago, Illinois.

The following table shows lease expirations of our in-service office portfolio as of December 31, 2020 during each of the next thirteen years and thereafter, assuming no exercise of renewal options or termination rights:

Year of Lease Expiration	Annualized Lease Revenue (in thousands)		Percentage of Annualized Lease Revenue (%)
Available space	$	—	—
2021	29,929		5.8
2022	54,918		10.7
2023	52,422		10.2
2024	62,222		12.1
2025	58,546		11.4
2026	34,487		6.7
2027	43,691		8.5
2028	46,505		9.0
2029	28,000		5.4
2030	19,106		3.7
2031	6,224		1.2
2032	11,547		2.2
Thereafter	67,541		13.1
	$	515,138	100.0

Certain Restrictions Related to our Properties

As of December 31, 2020, only the 5 Wall Street building in Burlington, Massachusetts is held as collateral for debt, and no properties were subject to ground leases. Refer to Schedule III listed in the index of Item 15(a) of this report, for further details regarding our properties as of December 31, 2020.

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ITEM 3.    LEGAL PROCEEDINGS

Piedmont is not subject to any material pending legal proceedings. However, we are subject to routine litigation arising in the ordinary course of owning and operating real estate assets. Our management expects that these ordinary routine legal proceedings will be covered by insurance and does not expect these legal proceedings to have a material adverse effect on our financial condition, results of operations, or liquidity. Additionally, management is not aware of any legal proceedings contemplated by governmental authorities.

ITEM 4.    MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5.    MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information and Holders

Our common stock is listed on the New York Stock Exchange under the symbol “PDM.” As of February 16, 2021, there were 8,724 common stockholders of record of our common stock.

Distributions

We intend to make distributions each taxable year equal to at least 90% of our REIT taxable income (not including a return of capital for federal income tax purposes). One of our primary goals is to pay regular quarterly distributions to our stockholders. The amount of distributions paid and the taxable portion thereof in prior periods are not necessarily indicative of amounts anticipated in future periods.

The amount of distributions to common stockholders is determined by our board of directors and is dependent upon a number of factors, including funds deemed available for distribution, based principally on our current and future projected operating cash flows reduced by capital requirements necessary to maintain our existing portfolio, our future capital needs, our future sources of liquidity, and the annual distribution requirements necessary to maintain our status as a REIT under the Code. Our board of directors declared a $0.21 dividend for each of the four quarters of 2020.

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Performance Graph

The following graph compares the cumulative total return of Piedmont’s common stock with the FTSE NAREIT Equity Office Index, the FTSE NAREIT Equity REITs Index, and the S&P 500 Index for the period beginning on December 31, 2015 through December 31, 2020. The graph assumes a $100 investment in each of Piedmont and the three indices, and the reinvestment of any dividends.

Comparison of Cumulative Total Return of One or More Companies, Peer Groups, Industry Indices, and/or Broad Markets

	As of the year ended December 31,
	2015		2016		2017		2018		2019		2020
Piedmont Office Realty Trust, Inc.	$	100.00	$	115.62	$	115.73	$	105.20	$	142.99	$	109.42
FTSE NAREIT Equity Office	$	100.00	$	113.17	$	119.11	$	101.84	$	133.83	$	109.16
FTSE NAREIT Equity REITs	$	100.00	$	108.52	$	114.19	$	108.91	$	137.23	$	126.25
S&P 500	$	100.00	$	111.96	$	136.40	$	130.42	$	171.49	$	203.04

The performance graph above is being furnished as part of this Annual Report solely in accordance with the requirement under Rule 14a-3(b)(9) to furnish Piedmont’s stockholders with such information and, therefore, is not deemed to be filed with the SEC or subject to the liabilities of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and should not be deemed to be incorporated by reference into any of our prior or subsequent filings under the Securities Act of 1933, as amended.

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Purchases of Equity Securities By the Issuer and Affiliated Purchasers

During the quarter ended December 31, 2020, we repurchased and retired approximately 2.2 million shares of our common stock in the open market as part of our board-authorized stock repurchase plan as follows:

Period	Total Number of Shares Purchased (in 000’s)	Average Price Paid per Share		Total Number of Shares  Purchased as Part of Publicly Announced Program (in 000’s) (1)	Maximum Approximate Dollar Value of Shares Available That May Yet Be Purchased Under the Program (in 000’s)
October 1, 2020 to October 31, 2020	—	$	—	—	$	200,000
November 1, 2020 to November 30, 2020	1,530	$	13.19	1,530	$	179,811
December 1, 2020 to December 31, 2020	660	$	15.87	660	$	169,329	(1)
Total	2,190	$	14.00	2,190

(1)Amounts available for purchase relate only to remaining capacity under our stock repurchase plan as of December 31, 2020. On February 19, 2020, our Board of Directors authorized the repurchase of up to $200 million of shares of our common stock pursuant to the stock repurchase plan between February 2020 and February 2022, at the discretion of management, of which $169.3 million of capacity remained as of December 31, 2020.

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ITEM 6.    SELECTED FINANCIAL DATA

The following sets forth a summary of our selected financial data as of and for the years ended December 31, 2020, 2019, 2018, 2017, and 2016 (in thousands except for per-share data). Our selected financial data is prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), except as noted below.

	2020		2019		2018		2017		2016
Statement of Income Data:
Total revenues	$	535,024	$	533,178	$	525,967	$	574,173	$	555,715
Property operating costs	$	214,933	$	211,380	$	209,338	$	222,441	$	220,796
Depreciation and amortization	$	203,869	$	182,681	$	171,251	$	194,655	$	202,852
Impairment loss on real estate assets	$	—	$	8,953	$	—	$	46,461	$	33,901
General and administrative expenses	$	27,464	$	37,895	$	29,713	$	29,319	$	27,382
Interest and other expense	$	(61,739)	$	(60,023)	$	(61,065)	$	(63,622)	$	(64,477)
Gain on sale of real estate assets	$	205,666	$	197,010	$	75,691	$	115,874	$	93,410
Net income	$	232,685	$	229,256	$	130,291	$	133,549	$	99,717
Per-Share Data:
Per weighted-average common share data:
Income from continuing operations per share—basic and diluted	$	1.85	$	1.82	$	1.00	$	0.92	$	0.69
Cash dividends declared per common share	$	0.84	$	0.84	$	0.84	$	1.34	$	0.84
Weighted-average shares outstanding—basic (in thousands)	125,730		125,709		130,161		145,044		145,230
Weighted-average shares outstanding—diluted (in thousands)	126,104		126,182		130,636		145,380		145,635
Balance Sheet Data (at period end):
Total assets	$	3,739,810	$	3,516,757	$	3,592,429	$	3,999,967	$	4,368,168
Total stockholders’ equity	$	1,897,961	$	1,818,974	$	1,712,140	$	1,986,489	$	2,097,703
Outstanding debt	$	1,622,004	$	1,481,404	$	1,685,472	$	1,726,927	$	2,020,475
NAREIT Funds from Operations Data (1):
GAAP net income applicable to common stock	$	232,688	$	229,261	$	130,296	$	133,564	$	99,732
Depreciation and amortization	202,568		181,721		170,348		193,904		202,268
Impairment loss	—		8,953		—		46,461		33,901
Gain on sale- wholly-owned properties and unconsolidated partnerships	(205,666)		(197,010)		(75,691)		(119,557)		(93,410)
NAREIT Funds From Operations applicable to common stock (1)	$	229,590	$	222,925	$	224,953	$	254,372	$	242,491
Retirement and separation expenses associated with senior management transition in June 2019	—		3,175		—		—		—
Acquisition costs	—		—		—		6		976
Loss on extinguishment of debt	9,336		—		1,680		—		—
Net recoveries of casualty loss and litigation settlements	—		—		—		—		(34)
Core Funds From Operations applicable to common stock (1)	$	238,926	$	226,100	$	226,633	$	254,378	$	243,433
Amortization of debt issuance costs, fair market adjustments on notes payable, and discount on Senior Notes	2,833		2,101		2,083		2,496		2,610
Depreciation of non real estate assets	1,216		872		813		809		841
Straight-line effects of lease revenue and net effect of amortization of below-market in-place lease intangibles	(34,885)		(18,734)		(21,595)		(28,067)		(26,609)
Stock-based compensation adjustments	7,014		5,030		7,528		6,139		5,620
Acquisition costs	—		—		—		(6)		(976)
Non-incremental capital expenditures	(77,682)		(49,653)		(44,004)		(35,437)		(35,568)
Adjusted Funds From Operations applicable to common stock (1)	$	137,422	$	165,716	$	171,458	$	200,312	$	189,351

(1)Net income calculated in accordance with GAAP is the starting point for calculating Funds from Operations, Core Funds From Operations, and Adjusted Funds From Operations. See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations — Funds from Operations, Core Funds from Operations, and Adjusted Funds From Operations" below for a description and reconciliation of the calculations as presented.

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ITEM 7.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis should be read in conjunction with Item 6, Selected Financial Data, above and our audited consolidated financial statements and notes thereto as of December 31, 2020 and 2019, and for the years ended December 31, 2020, 2019, and 2018, included elsewhere in this Annual Report on Form 10-K. See also “Cautionary Note Regarding Forward-Looking Statements” preceding Part I of this report and “Risk Factors” set forth in Item 1A. of this report.

During 2020, all of our properties remained open and fully operational for tenants to utilize as they deemed appropriate. Given our low-leverage operating model of long-term leases to creditworthy tenants, to date the COVID-19 pandemic has not materially impacted our financial condition or results of operations, our overall liquidity position and outlook, or caused material impairments in our portfolio of operating properties. Our revenues increased year over year; several capital transactions were successfully completed; and our Core Funds From Operations increased approximately 6% in 2020 compared to the prior year. In response to the COVID-19 pandemic, we have completed stress testing of our various financial covenants assuming decreases in rental and parking income as appropriate and determined that we still have significant capacity with respect to all our covenant ratios. During the fourth quarter of 2020, we collected approximately 99% of our billed contractual rents on a monthly basis.

We continued to experience the repercussions of the COVID-19 pandemic during the fourth quarter of 2020, including the residual effect of forced closures and other restrictions that have had a material adverse effect on the global economy and the regional U.S. economies in which Piedmont operates. Specifically, the pandemic and its impact on the U.S., as well as the global economy, has negatively impacted the trading price of Piedmont's common stock and some of Piedmont's tenants' ability to pay their rent. As of the date of this filing, we have entered into approximately 70 agreements with various tenants that primarily deferred approximately $7.1 million of 2020 rent payments into fourth quarter of 2020 or the year ending December 31, 2021. The vast majority of tenants in repayment periods for prior deferrals have been performing well, with approximately $1.3 million of the $7.1 million already collected. Nonetheless, Piedmont has established an approximately $4.6 million general reserve for potential collectibility issues. There can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due. The long-term impacts of the COVID-19 pandemic remain unknown. A prolonged economic downturn or recession resulting from the pandemic could adversely affect many of Piedmont's tenants which could, in turn, adversely impact Piedmont's business, financial condition and results of operations.

Piedmont will continue to work closely with its tenants and address their concerns on a case-by-case basis, seeking solutions that address immediate cash flow interruptions while maintaining long term lease obligations.

Liquidity and Capital Resources

We intend to use cash on hand, cash flows generated from the operation of our properties, net proceeds from the disposition of select properties, and proceeds from our $500 Million Unsecured 2018 Line of Credit as our primary sources of immediate liquidity. During the fourth quarter of 2020, we sold our last three properties in New Jersey (consisting of 600 Corporate Drive and 200 and 400 Bridgewater Crossing, collectively the "New Jersey Portfolio"), and used a portion of the proceeds to purchase an asset in downtown Orlando, Florida. We have approximately $462 million of capacity on our $500 million line of credit available as of filing. When necessary, we may seek new secured or unsecured borrowings from third party lenders or issue securities as additional sources of capital. The nature and timing of these additional sources of capital will be highly dependent on market conditions.

Our most consistent use of capital has historically been, and we believe will continue to be, to fund capital expenditures for our existing portfolio of properties. During the years ended December 31, 2020 and 2019, we incurred the following types of capital expenditures (in thousands):

	December 31, 2020		December 31, 2019
Capital expenditures for redevelopment/ renovations	$	18,600	$	11,901
Other capital expenditures, including building and tenant improvements	93,980		91,652
Total capital expenditures (1)	$	112,580	$	103,553

(1)Of the total amounts paid, approximately $0.6 million and $2.7 million related to soft costs such as capitalized interest, payroll, and other general and administrative expenses for the year ended December 31, 2020 and 2019, respectively.

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"Capital expenditures for redevelopment/renovations" during the year ended December 31, 2020 primarily related to a redevelopment project to upgrade amenities at our 200 South Orange building in Orlando, Florida, as well as a redevelopment master plan project to upgrade common areas, amenities, and parking, at our Galleria buildings in Atlanta, Georgia. Expenditures during the year ended December 31, 2019 primarily related to a redevelopment project to upgrade amenities at our US Bancorp building in Minneapolis, Minnesota, as well as a redevelopment project to upgrade common areas, amenities, and parking, at our Two Pierce Place building in Itasca, Illinois.

"Other capital expenditures, including building and tenant improvements" include all other capital expenditures during the period and are typically comprised of tenant and building improvements necessary to lease, maintain, or provide enhancements to our existing portfolio of office properties, including tenant improvements totaling approximately $13.4 million for the 520,000 square foot, 20-year renewal and expansion of the State of New York at our 60 Broad Street building in New York City incurred during the year ended December 31, 2020.

Given that our operating model frequently results in leases for large blocks of space to credit-worthy tenants, our leasing success can result in capital outlays which vary from one reporting period to another based upon the specific leases executed. For example, for leases executed during the year ended December 31, 2020, we committed to spend approximately $5.79 per square foot per year of lease term for tenant improvement allowances and lease commissions (net of expired lease commitments) as compared to $5.86 (net of expired lease commitments) for the year ended December 31, 2019. As of December 31, 2020, we had one individually significant unrecorded tenant allowance commitment outstanding of approximately $38.2 million related to the State of New York's lease at our 60 Broad Street building mentioned above.

In addition to the amounts that we have already committed to as a part of executed leases, we also anticipate continuing to incur similar market-based tenant improvement allowances and leasing commissions in conjunction with procuring future leases for our existing portfolio of properties. Both the timing and magnitude of expenditures related to future leasing activity can vary due to a number of factors, including being highly dependent on the competitive market conditions at the time of lease negotiations of the particular office market within which a given lease is signed. For example, we anticipate negotiating the long-term renewal of a majority of the City of New York's 313,000 square foot lease at our 60 Broad Street building. Depending on the length of the lease term, we anticipate committing to spend significant capital for market-based tenant improvement allowances and leasing commissions associated with the renewal.

There are other uses of capital that may arise as part of our typical operations. Subject to the identification and availability of attractive investment opportunities and our ability to consummate such acquisitions on satisfactory terms, acquiring new assets consistent with our investment strategy could also be a significant use of capital. We may also use capital resources to repurchase additional shares of our common stock under our stock repurchase program when we believe the stock is trading disparately from our peers and at a significant discount to net asset value. As of December 31, 2020, we had approximately $169.3 million of board-authorized capacity remaining for future stock repurchases. Finally, although we have no scheduled debt maturities until the third quarter of 2021, we may use capital to repay debt obligations when we deem it prudent to refinance various obligations.

The amount and form of payment (cash or stock issuance) of future dividends to be paid to our stockholders will continue to be largely dependent upon (i) the amount of cash generated from our operating activities; (ii) our expectations of future cash flows; (iii) our determination of near-term cash needs for debt repayments, development projects, and selective acquisitions of new properties; (iv) the timing of significant expenditures for tenant improvements, building redevelopment projects, and general property capital improvements; (v) long-term dividend payout ratios for comparable companies; (vi) our ability to continue to access additional sources of capital, including potential sales of our properties; and (vii) the amount required to be distributed to maintain our status as a REIT. With the fluctuating nature of cash flows and expenditures, we may periodically borrow funds on a short-term basis to cover timing differences in cash receipts and cash disbursements.

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Index to Financial Statements

Results of Operations (2020 vs. 2019)

Overview

Net income applicable to common stockholders for the year ended December 31, 2020 was $232.7 million, or $1.85 per diluted share, as compared with net income applicable to common stockholders of $229.3 million, or $1.82 per diluted share, for the year ended December 31, 2019. Results for the year ended December 31, 2020 included approximately $205.7 million of gains on sales of real estate assets, whereas the prior year included approximately $188.1 million of gains on sales of real estate assets net of impairment losses, a $0.14 per diluted share increase from the prior year. However, the increase was mostly offset by an increase in amortization expense related to acquired lease intangible assets as part of the net property acquisition activity subsequent to January 1, 2019.

Comparison of the accompanying consolidated statements of income for the year ended December 31, 2020 vs. the year ended December 31, 2019.

The following table sets forth selected data from our consolidated statements of income for the years ended December 31, 2020 and 2019, respectively, as well as each balance as a percentage of total revenues for the years presented (dollars in millions):

	December 31, 2020		% of Revenues		December 31, 2019		% of Revenues		Variance
Revenue:
Rental and tenant reimbursement revenue	$	519.9			$	511.9			$	8.0
Property management fee revenue	2.9				3.4				(0.5)
Other property related income	12.2				17.9				(5.7)
Total revenues	535.0		100	%	533.2		100	%	1.8
Expense:
Property operating costs	214.9		40	%	211.4		40	%	3.5
Depreciation	110.6		21	%	106.0		19	%	4.6
Amortization	93.3		17	%	76.7		14	%	16.6
Impairment losses on real estate assets	—		—	%	8.9		2	%	(8.9)
General and administrative	27.5		5	%	37.9		7	%	(10.4)
	446.3				440.9				5.4
Other income (expense):
Interest expense	(55.0)		10	%	(61.6)		12	%	6.6
Other income	2.6		—	%	1.6		—	%	1.0
Loss on extinguishment of debt	(9.3)		2	%	—		—	%	(9.3)
Gain on sale of real estate assets	205.7		38	%	197.0		37	%	8.7
Net income	$	232.7	43	%	$	229.3	43	%	$	3.4

Revenue

Rental and tenant reimbursement revenue increased approximately $8.0 million for the year ended December 31, 2020 as compared to the same period in the prior year. The favorable variance was primarily due to capital transaction activity subsequent to January 1, 2019 and new leases commencing at higher overall rental rates. These increases were partially offset by the establishment of receivable reserves as a result of the COVID-19 pandemic during the year ended December 31, 2020, along with decreased portfolio occupancy.

Property management fee revenue decreased approximately $0.5 million for the year ended December 31, 2020 as compared to the same period in the prior year. The decrease was primarily due to construction management fees received in the prior year from one of our former Independence Square properties, with such fees varying from period-to-period due to the variability of construction activity.

Other property related income decreased approximately $5.7 million for the year ended December 31, 2020 as compared to the same period in the prior year primarily due to the sale of the 500 West Monroe Street building with its 1,300-space parking

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Index to Financial Statements

garage during the fourth quarter of 2019, as well as lower transient parking utilization at our buildings during 2020 as a result of the COVID-19 pandemic. These decreases were partially offset by new parking revenue associated with acquisitions consummated subsequent to January 1, 2019.

Expense

Property operating costs increased approximately $3.5 million for the year ended December 31, 2020 as compared to the same period in the prior year. This variance was primarily due to capital transaction activity subsequent to January 1, 2019, and higher property tax expense in certain markets, partially offset by lower utility and janitorial costs as a result of reduced building utilization across our portfolio as a result of the pandemic, along with decreased portfolio occupancy.

Depreciation expense increased approximately $4.6 million for the year ended December 31, 2020 compared to the same period in the prior year. The increase was due primarily to additional building and tenant improvements placed in service subsequent to January 1, 2019, partially offset by a decrease in depreciation associated with capital transaction activity subsequent to January 1, 2019.

Amortization expense increased approximately $16.6 million for the year ended December 31, 2020 compared to the same period in the prior year. Approximately $23.2 million of the increase was due to capital transaction activity completed subsequent to January 1, 2019. This increase was partially offset by certain lease intangible assets or other deferred costs at our existing properties becoming fully amortized as a result of the expiration of leases subsequent to January 1, 2019.

During the prior year ended December 31, 2019, we recognized impairment losses on real estate assets totaling approximately $8.9 million related to our 600 Corporate Drive asset in Lebanon, New Jersey, as well as an impairment loss recognized in conjunction with the disposition of The Dupree building in September 2019 (see Note 7 and Note 13 to the accompanying consolidated financial statements for more details). No impairment losses on real estate assets were recorded during the year ended December 31, 2020.

General and administrative expenses decreased approximately $10.4 million for the year ended December 31, 2020 as compared to the same period in the prior year with the current period reflecting decreased accruals for incentive and stock based compensation and the prior period reflecting certain one-time expenses associated with the senior management transition that took place on June 30, 2019, resulting in lower compensation at the executive level in the current period.

Other Income (Expense)

Interest expense decreased approximately $6.6 million for the year ended December 31, 2020 as compared to the same period in the prior year primarily as a result of lower interest rates during the current year, as well as the repayment of the $160 million mortgage debt in conjunction with our sale of the 1901 Market Street building in June 2020. This variance was partially offset by a decrease in capitalized interest in the current year, as compared to the prior year, of approximately $1.2 million.

Other income increased approximately $1.0 million for the year ended December 31, 2020 as compared to the same period in the prior year. The variance is primarily attributable to interest income recognized on notes receivable extended to the purchaser of our New Jersey Portfolio. The notes receivable mature in October 2023 (see Note 13 to the accompanying consolidated financial statements for more details) and are secured by the 200 and 400 Bridgewater Crossing properties.

The loss on extinguishment of debt for the year ended December 31, 2020 was associated with the early repayment of the $160 Million Fixed-Rate Loan which was collateralized by the 1901 Market Street building. The property was sold in June 2020. The loss was comprised of a prepayment penalty and the write-off of unamortized debt issuance costs and discounts associated with the loan.

Gain on sale of real estate assets during the year ended December 31, 2020 includes a gain of approximately $191.0 million recognized on the sale of the 1901 Market Street building in Philadelphia, Pennsylvania and a gain of approximately $14.6 million recognized on the sale of the New Jersey Portfolio. Gain on sale of real estate assets during the year ended December 31, 2019 includes approximately $33.2 million gain recognized on the sale of the One Independence Square building in Washington, D.C., an approximately $6.1 million adjustment of the gain on sale for the Two Independence Square building related to the reimbursement of certain previously disputed tenant improvement overages, and an approximately $157.7 million gain recognized on the sale of the 500 West Monroe Street building in Chicago, Illinois.

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Index to Financial Statements

Results of Operations (2019 vs. 2018)

Please refer to "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Results of Operations (2019 vs. 2018)" in our Annual Report on Form 10-K for the year ended December 31, 2019, as filed with the SEC on February 19, 2020, for a discussion of the results of operations for the year ended December 31, 2019 as compared to the year ended December 31, 2018.

Issuer and Guarantor Financial Information

During the years ended December 31, 2013 and 2014 and 2020, Piedmont, through its wholly-owned subsidiary Piedmont Operating Partnership, LP ("Piedmont OP" or the "Issuer"), issued senior unsecured notes payable of $350 million, $400 million, and $300 million, respectively (collectively, the "Notes"). The Notes are senior unsecured obligations of Piedmont OP and rank equally in right of payment with all of Piedmont OP's other existing and future senior unsecured indebtedness and are effectively subordinated in right of payment to all of Piedmont OP’s existing and future mortgage indebtedness and other secured indebtedness (to the extent of the value of the collateral securing such indebtedness) and to all existing and future indebtedness and other liabilities of Piedmont OP’s subsidiaries, whether secured or unsecured.

The Notes are fully and unconditionally guaranteed by Piedmont Office Realty Trust, Inc. (the "Guarantor"), the parent entity that consolidates Piedmont OP and all other subsidiaries. By execution of the guarantee, the Guarantor guarantees to each holder of the Notes that the principal and interest on the Notes will be paid in full when due, whether at the maturity dates of the respective loans, or upon acceleration, upon redemption, or otherwise, and interest on overdue principal and interest on any overdue interest, if any, on the Notes and all other obligations of the Issuer to the holders of the Notes will be promptly paid in full. The Guarantor's guarantee of the Notes is its senior unsecured obligation and ranks equally in right of payment with all of the Guarantor's other existing and future senior unsecured indebtedness and guarantees. The Guarantor’s guarantee of the notes is effectively subordinated in right of payment to all existing and future mortgage indebtedness and other secured indebtedness and secured guarantees of the Guarantor (to the extent of the value of the collateral securing such indebtedness and guarantees); and all existing and future indebtedness and other liabilities, whether secured or unsecured, of the Guarantor’s subsidiaries.

In the event of the bankruptcy, liquidation, reorganization or other winding up of Piedmont OP or the Guarantor, assets that secure any of their respective secured indebtedness and other secured obligations will be available to pay their respective obligations under the Notes or the guarantee, as applicable, and their other respective unsecured indebtedness and other unsecured obligations only after all of their respective indebtedness and other obligations secured by those assets have been repaid in full.

The non-Guarantors are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay any amounts due pursuant to the Notes, or to make any funds available therefore, whether by dividends, loans, distributions or other payments.

Pursuant to Rule 13-01 of Regulation S-X, Guarantors and Issuers of Guaranteed Securities Registered or Being Registered, the following tables present summarized financial information for Piedmont OP as Issuer and Piedmont Office Realty Trust, Inc. as Guarantor on a combined basis after elimination of (i) intercompany transactions and balances among the Issuer and the Guarantor and (ii) equity in earnings from and investments in any subsidiary that is a non-Guarantor (in thousands):

Combined Balances of Piedmont OP and Piedmont Office Realty Trust, Inc. as Issuer and Guarantor, respectively	As of December 31, 2020		As of  December 31, 2019
Due from non-guarantor subsidiary	$	810	$	810
Total assets	$	347,757	$	364,734
Total liabilities	$	1,654,009	$	1,343,881
			For the Year Ended December 31, 2020
Total revenues			$	43,193
Net loss			$	(50,803)

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Index to Financial Statements

Net Operating Income by Geographic Segment

The chief operating decision maker ("CODM"), who is our President and Chief Executive Officer, evaluates our portfolio and assesses the ongoing operations and performance of our properties utilizing the following geographic segments: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York. These operating segments are also Piedmont’s reportable segments. Additionally, as of December 31, 2020, Piedmont owns two properties in Houston and one property in Chicago that do not meet the definition of an operating or reportable segment as the CODM does not regularly review these properties for purposes of allocating resources or assessing performance, and Piedmont does not maintain a significant presence or anticipate further investment in these markets. These three properties are included in "Corporate and other" below. See Note 17, Segment Information, to the accompanying consolidated financial statements for additional information and a reconciliation of Net income applicable to Piedmont to Net Operating Income ("NOI").

The following table presents NOI by geographic segment (in thousands):

	Years Ended December 31,
	2020		2019
Dallas	$	59,845	$	29,438
Atlanta	60,276		47,287
Washington, D.C.	36,696		41,167
Minneapolis	33,588		35,610
Boston	41,722		44,016
Orlando	34,427		35,433
New York	38,990		44,036
Total reportable segments	305,544		276,987
Corporate and other	13,915		43,637
Total NOI	$	319,459	$	320,624

Comparison of the Year Ended December 31, 2020 Versus the Year Ended December 31, 2019

Dallas

NOI increased primarily as a result of the purchase of the Dallas Galleria Office Towers in February 2020.

Atlanta

NOI increased primarily due to a full year of operating income at the Galleria 400 and 600 buildings, as well as the commencement of leases across the Atlanta market.

Washington, D.C.

NOI decreased largely due to the sale of the One Independence Square property in February 2019, as well as the write-off of certain lease-related assets at our 3100 Clarendon Boulevard building during the year ended December 31, 2020.

New York

NOI decreased primarily due to the sale of the New Jersey Portfolio in October 2020.

Corporate and other

NOI decreased primarily as a result of the sale of 1901 Market Street building in Philadelphia, Pennsylvania in June 2020, as well as the sale of the 500 West Monroe Street building in Chicago, Illinois in October 2019.

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Index to Financial Statements

Funds From Operations ("FFO"), Core Funds From Operations ("Core FFO"), and Adjusted Funds From Operations (“AFFO”)

Net income calculated in accordance with GAAP is the starting point for calculating FFO, Core FFO, and AFFO. These metrics are non-GAAP financial measures and should not be viewed as an alternative measurement of our operating performance to net income. Management believes that accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, many industry investors and analysts have considered the presentation of operating results for real estate companies that use historical cost accounting alone to be insufficient. As a result, we believe that the additive use of FFO, Core FFO, and AFFO, together with the required GAAP presentation, provides a more complete understanding of our performance relative to our competitors and a more informed and appropriate basis on which to make decisions involving operating, financing, and investing activities.

We calculate FFO in accordance with the current National Association of Real Estate Investment Trusts ("NAREIT") definition. NAREIT currently defines FFO as follows: Net income (computed in accordance with GAAP), excluding gains or losses from sales of depreciable real estate and impairment charges, plus the add back of depreciation and amortization on real estate assets. Other REITs may not define FFO in accordance with the NAREIT definition, or may interpret the current NAREIT definition differently than we do; therefore, our computation of FFO may not be comparable to such other REITs.

We calculate Core FFO by starting with FFO, as defined by NAREIT, and adjusting for gains or losses on the extinguishment of swaps and/or debt, acquisition-related expenses, and any significant non-recurring or infrequent items. Core FFO is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Core FFO is helpful to investors as a supplemental performance measure because it excludes the effects of certain infrequent or non-recurring items which can create significant earnings volatility, but which do not directly relate to our core recurring business operations. As a result, we believe that Core FFO can help facilitate comparisons of operating performance between periods and provides a more meaningful predictor of future earnings potential. Other REITs may not define Core FFO in the same manner as us; therefore, our computation of Core FFO may not be comparable to that of other REITs.

We calculate AFFO by starting with Core FFO and adjusting for non-incremental capital expenditures and acquisition-related costs and then adding back non-cash items including: non-real estate depreciation, straight-line rent adjustments and fair value lease adjustments, non-cash components of interest expense and compensation expense. AFFO is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that AFFO is helpful to investors as a meaningful supplemental comparative performance measure of our ability to make incremental capital investments in new properties or enhancements to existing properties that improve revenue growth potential. Other REITs may not define AFFO in the same manner as us; therefore, our computation of AFFO may not be comparable to that of other REITs.

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Index to Financial Statements

Reconciliations of net income to FFO, Core FFO, and AFFO for the years ended December 31, 2020, 2019, and 2018, respectively, are presented below (in thousands except per share amounts):

	2020		Per Share (1)		2019		Per Share(1)		2018		Per Share(1)
GAAP net income applicable to common stock	$	232,688	$	1.85	$	229,261	$	1.82	$	130,296	$	1.00
Depreciation of real assets	109,326		0.86		105,111		0.83		107,113		0.82
Amortization of lease-related costs	93,242		0.74		76,610		0.61		63,235		0.48
Impairment loss on real estate assets	—		—		8,953		0.07		—		—
Gain on sale- wholly-owned properties	(205,666)		(1.63)		(197,010)		(1.56)		(75,691)		(0.58)
NAREIT Funds From Operations applicable to common stock	$	229,590	$	1.82	$	222,925	$	1.77	$	224,953	$	1.72
Adjustments:
Retirement and separation expenses associated with senior management transition in June 2019	—		—		3,175		0.02		—		—
Loss on extinguishment of debt	9,336		0.07		—		—		1,680		0.01
Core Funds From Operations applicable to common stock	$	238,926	$	1.89	$	226,100	$	1.79	$	226,633	$	1.73
Adjustments:
Amortization of debt issuance costs, fair market adjustments on notes payable, and discounts on debt	2,833				2,101				2,083
Depreciation of non real estate assets	1,216				872				813
Straight-line effects of lease revenue	(22,601)				(10,411)				(13,980)
Stock-based compensation adjustments	7,014				5,030				7,528
Net effect of amortization of above and below-market in-place lease intangibles	(12,284)				(8,323)				(7,615)
Non-incremental capital expenditures (2)	(77,682)				(49,653)				(44,004)
Adjusted Funds From Operations applicable to common stock	$	137,422			$	165,716			$	171,458
Weighted-average shares outstanding – diluted	126,104				126,182				130,636

(1)Based on weighted-average shares outstanding—diluted.

(2)We define non-incremental capital expenditures as capital expenditures of a recurring nature related to tenant improvements, leasing commissions, and building capital that do not incrementally enhance the underlying assets' income generating capacity. Tenant improvements, leasing commissions, building capital and deferred lease incentives incurred to lease space that was vacant at acquisition, leasing costs for spaces vacant for greater than one year, leasing costs for spaces at newly acquired properties for which in-place leases expire shortly after acquisition, improvements associated with the expansion of a building, and renovations that either enhance the rental rates of a building or change the property's underlying classification, such as from a Class B to a Class A property, are excluded from this measure. Non-incremental capital expenditures for the year ended December 31, 2020 includes a $16 million leasing commission for the approximately 20-year, 520,000-square-foot renewal and expansion of the State of New York's lease at our 60 Broad Street building in New York City that was executed during the fourth quarter of 2019.

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Index to Financial Statements

Property and Same Store Net Operating Income

Property Net Operating Income ("Property NOI") is a non-GAAP measure which we use to assess our operating results. We calculate Property NOI beginning with Net income (computed in accordance with GAAP) before interest, income-related federal, state, and local taxes, depreciation and amortization and removing any impairment losses, gains or losses from sales of any property and other significant infrequent items that create volatility within our earnings and make it difficult to determine the earnings generated by our core ongoing business. Furthermore, we remove general and administrative expenses, income associated with property management performed by us for other organizations, and other income or expense items such as interest income from loan investments or costs from the pursuit of non-consummated transactions. For Property NOI (cash basis), the effects of straight-lined rents and fair value lease revenue are also eliminated; while such effects are not adjusted in calculating Property NOI (accrual basis). Property NOI is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Property NOI, on either a cash or accrual basis, is helpful to investors as a supplemental comparative performance measure of income generated by our properties alone without our administrative overhead. Other REITs may not define Property NOI in the same manner as we do; therefore, our computation of Property NOI may not be comparable to that of other REITs.

We calculate Same Store Net Operating Income ("Same Store NOI") as Property NOI applicable to the properties owned or placed in service during the entire span of the current and prior year reporting periods. Same Store NOI is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Same Store NOI, on either a cash or accrual basis is helpful to investors as a supplemental comparative performance measure of the income generated from the same group of properties from one period to the next. Other REITs may not define Same Store NOI in the same manner as we do; therefore, our computation of Same Store NOI may not be comparable to that of other REITs.

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Index to Financial Statements

The following table sets forth a reconciliation from net income calculated in accordance with GAAP to EBITDAre, Core EBITDA, Property NOI, and Same Store NOI on both a cash and accrual basis, for the years ended December 31, 2020 and 2019, respectively (in thousands):

	Cash Basis					Accrual Basis
	December 31, 2020			December 31, 2019		December 31, 2020			December 31, 2019
Net income applicable to Piedmont (GAAP basis)	$	232,688		$	229,261	$	232,688		$	229,261
Net loss applicable to noncontrolling interest	(3)			(5)		(3)			(5)
Interest expense	54,990			61,594		54,990			61,594
Depreciation	110,542			105,985		110,542			105,985
Amortization	93,242			76,610		93,242			76,610
Depreciation and amortization attributable to noncontrolling interests	85			87		85			87
Impairment loss on real estate assets	—			8,953		—			8,953
Gain on sale of real estate assets	(205,666)			(197,010)		(205,666)			(197,010)
EBITDAre(1)	285,878			285,475		285,878			285,475
Loss on extinguishment of debt	9,336			—		9,336			—
Retirement and separation expenses associated with senior management transition in June 2019	—			3,175		—			3,175
Core EBITDA(2)	295,214			288,650		295,214			288,650
General & administrative expenses	27,464			34,720		27,464			34,720
Management fee revenue(3)	(1,495)			(2,518)		(1,495)			(2,518)
Other income	(1,724)			(228)		(1,724)			(228)
Non-cash general reserve for uncollectible accounts	4,553			—
Straight-line rent effects of lease revenue	(22,601)			(10,411)
Straight-line effects of lease revenue attributable to noncontrolling interests	(16)			(9)
Amortization of lease-related intangibles	(12,284)			(8,323)
Property NOI	289,111			301,881		319,459			320,624
Net operating income from:
Acquisitions(4)	(40,696)			(8,229)		(52,448)			(10,769)
Dispositions(5)	(21,049)			(61,423)		(22,113)			(63,730)
Other investments(6)	(248)			(1,204)		(340)			(1,142)
Same Store NOI	$	227,118		$	231,025	$	244,558		$	244,983
Change period over period in Same Store NOI	(1.7)		%	N/A		(0.2)		%	N/A

(1)We calculate Earnings Before Interest, Taxes, Depreciation, and Amortization- Real Estate ("EBITDAre") in accordance with the current National Association of Real Estate Investment Trusts (“NAREIT”) definition. NAREIT currently defines EBITDAre as net income (computed in accordance with GAAP) adjusted for gains or losses from sales of property, impairment losses, depreciation on real estate assets, amortization on real estate assets, interest expense and taxes. Some of the adjustments mentioned can vary among owners of identical assets in similar conditions based on historical cost accounting and useful-life estimates. EBITDAre is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that EBITDAre is helpful to investors as a supplemental performance measure because it provides a metric for understanding our results from ongoing operations without taking into account the effects of non-cash expenses (such as depreciation and amortization) and capitalization and capital structure expenses (such as interest expense and taxes). We also believe that EBITDAre can help facilitate comparisons of operating performance between periods and

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Index to Financial Statements

with other REITs. However, other REITs may not define EBITDAre in accordance with the NAREIT definition, or may interpret the current NAREIT definition differently than us; therefore, our computation of EBITDAre may not be comparable to that of such other REITs.

(2)We calculate Core Earnings Before Interest, Taxes, Depreciation, and Amortization ("Core EBITDA") as net income (computed in accordance with GAAP) before interest, taxes, depreciation and amortization and incrementally removing any impairment losses, gains or losses from sales of property and other significant infrequent items that create volatility within our earnings and make it difficult to determine the earnings generated by our core ongoing business. Core EBITDA is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Core EBITDA is helpful to investors as a supplemental performance measure because it provides a metric for understanding the performance of our results from ongoing operations without taking into account the effects of non-cash expenses (such as depreciation and amortization), as well as items that are not part of normal day-to-day operations of our business. Other REITs may not define Core EBITDA in the same manner as us; therefore, our computation of Core EBITDA may not be comparable to that of other REITs.

(3)Presented net of related operating expenses incurred to earn such management fee revenue.

(4)Acquisitions consist of Galleria 100 in Atlanta, Georgia, purchased on May 6, 2019; Galleria 400 and Galleria 600 in Atlanta, Georgia, purchased on August 23, 2019; One Galleria Tower, Two Galleria Tower and Three Galleria Tower in Dallas, Texas, purchased on February 12, 2020; and 222 South Orange Avenue in Orlando, Florida, purchased on October 29, 2020.

(5)Dispositions consist of One Independence Square in Washington, D.C., sold on February 28, 2019; The Dupree in Atlanta, Georgia, sold on September 4, 2019; 500 West Monroe Street in Chicago, Illinois, sold on October 28, 2019; 1901 Market Street in Philadelphia, Pennsylvania, sold on June 25, 2020; and the New Jersey Portfolio sold on October 28, 2020 (consisting of 200 and 400 Bridgewater Crossing in Bridgewater, New Jersey, and 600 Corporate Drive in Lebanon, New Jersey).

(6)Other investments consist of active redevelopment and development projects, land, and recently completed redevelopment and development projects for which some portion of operating expenses were capitalized during the current and/or prior year reporting periods. The operating results from Two Pierce Place in Itasca, Illinois and 222 South Orange Avenue in Florida are included in this line item.

Overview

Our portfolio is a geographically diverse group of properties located primarily in select sub-markets within seven major Eastern U.S. office markets, with a majority of our ALR being generated from the Sunbelt. We typically lease space to large, credit-worthy corporate or governmental tenants on a long-term basis. As of December 31, 2020, our average lease is between 15,000 and 20,000 square feet with six years of lease term remaining. Consequently, leased percentage, as well as rent roll ups and roll downs, which we experience as a result of re-leasing, can fluctuate widely between buildings and between tenants, depending on when a particular lease is scheduled to commence or expire.

Leased Percentage

On a same store basis, our portfolio was approximately 88% leased as of December 31, 2020, as compared to 91% leased as of December 31, 2019. Other than the City of New York's 313,000 square foot lease that is currently in holdover status at 60 Broad Street in New York, we have no leases greater than 1% of our ALR expiring during the eighteen month period following December 31, 2020. We remain in advanced discussions for the renewal of substantially all of the City of New York's leased square footage. To the extent new leases for currently vacant space outweigh or fall short of scheduled expirations, such leases would increase or decrease our overall leased percentage, respectively.

Impact of Downtime, Abatement Periods, and Rental Rate Changes

Commencement of new leases typically occurs 6-18 months after the lease execution date, after refurbishment of the space is completed. The downtime between a lease expiration and the new lease's commencement can negatively impact Property NOI and Same Store NOI comparisons (both accrual and cash basis). In addition, office leases, both new and renewal, often contain upfront rental and/or operating expense abatement periods which delay the cash flow benefits of the lease even after the new lease or renewal has commenced and will continue to negatively impact Property NOI and Same Store NOI on a cash basis until such abatements expire. As of December 31, 2020, we had approximately 1 million square feet of executed leases for vacant space yet to commence or under rental abatement.

If we are unable to replace expiring leases with new or renewal leases at rental rates equal to or greater than the expiring rates, rental rate roll downs could occur and negatively impact Property NOI and Same Store NOI comparisons. As mentioned above, our geographically diverse portfolio and the magnitude of some of our tenant's leased space can result in rent roll ups and roll downs that can fluctuate widely on a building-by-building and a quarter-to-quarter basis. During the year ended December 31, 2020, we experienced a 3.5% and 10.2% roll up in cash and accrual rents, respectively, on leases executed during the period for space vacant one year or less.

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Same Store NOI decreased by 1.7% and 0.2% on a cash and accrual basis, respectively, for the year ended December 31, 2020 as compared to the year ended December 31, 2019. The decrease in cash basis Same Store NOI was primarily attributable to the deferral, net of subsequent collections, of approximately $5.8 million of 2020 rental payments. Additional contributors to the decreases were a reduction in transient parking revenue as a result of the pandemic and decreased portfolio occupancy in 2020 when compared to 2019. Property NOI and Same Store NOI comparisons for any given period fluctuate as a result of the mix of net leasing activity in individual properties during the respective period.

Election as a REIT

We have elected to be taxed as a REIT under the Code and have operated as such beginning with our taxable year ended December 31, 1998. To qualify as a REIT, we must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of our adjusted REIT taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to our stockholders, as defined by the Code. As a REIT, we generally will not be subject to federal income tax on income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we may be subject to federal income taxes on our taxable income for that year and for the four years following the year during which qualification is lost and/or penalties, unless the IRS grants us relief under certain statutory provisions. Such an event could materially adversely affect our net income and net cash available for distribution to our stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT and intend to continue to operate in the foreseeable future in such a manner that we will remain qualified as a REIT for federal income tax purposes. We have elected to treat POH, a wholly-owned subsidiary of Piedmont, as a taxable REIT subsidiary. POH performs non-customary services for tenants of buildings that we own, including solar power generation and real estate and non-real estate related-services. Any earnings related to such services performed by our taxable REIT subsidiary are subject to federal and state income taxes. In addition, for us to continue to qualify as a REIT, our investments in taxable REIT subsidiaries cannot exceed 20% of the value of our total assets.

Inflation

We are exposed to inflation risk, as income from long-term leases is the primary source of our cash flows from operations. There are provisions in the majority of our tenant leases that are intended to protect us from, and mitigate the risk of, the impact of inflation. These provisions include rent steps, reimbursement billings for operating expense pass-through charges, real estate tax, and insurance on a per square-foot basis, or in some cases, annual reimbursement of operating expenses above certain per square-foot allowances. However, due to the long-term nature of the leases, the leases may not readjust their reimbursement rates frequently enough to fully cover inflation.

Off-Balance Sheet Arrangements

We are not dependent on off-balance sheet financing arrangements for liquidity, and do not currently have any off-balance sheet arrangements. For further information regarding our commitments under operating lease obligations, see the notes of our accompanying consolidated financial statements, as well as the table found in Contractual Obligations below.

Application of Critical Accounting Policies

Our accounting policies have been established to conform with GAAP. The preparation of financial statements in conformity with GAAP requires management to use judgment in the application of accounting policies, including making estimates and assumptions. These judgments affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different, it is possible that different accounting policies would have been applied, thus, resulting in a different presentation of the financial statements. Additionally, other companies may utilize different estimates that may impact comparability of our results of operations to those of companies in similar businesses. The critical accounting policies outlined below have been discussed with members of the Audit Committee of the Board of Directors.

Valuation of Real Estate Assets

We continually monitor events and changes in circumstances that could indicate that the carrying amounts of the real estate and related intangible assets, both operating properties and properties under construction, in which we have an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present, we assess whether the respective carrying values will be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition for assets held for use, or from the estimated fair value, less costs

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Index to Financial Statements

to sell, for assets held for sale. In the event that the expected undiscounted future cash flows for assets held for use or the estimated fair value, less costs to sell, for assets held for sale do not exceed the respective asset carrying value, we adjust such assets to the respective estimated fair values and recognize an impairment loss.

Projections of expected future cash flows require that we estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. The subjectivity of assumptions used in the future cash flow analysis, including capitalization and discount rates, could result in an incorrect assessment of the property’s estimated fair value and, therefore, could result in the misstatement of the carrying value of our real estate and related intangible assets and our reported net income attributable to Piedmont.

Rental Revenue Recognition

Rental income for office properties is our principal source of revenue. The timing of rental revenue recognition is largely dependent on our conclusion as to whether we, or our tenant, are the owner of tenant improvements at the leased property. The determination of whether we, or our tenant, are the owner of tenant improvements for accounting purposes is subject to significant judgment. In making that determination, we consider numerous factors and perform an evaluation of each individual lease. No one factor is determinative in reaching a conclusion. The factors we evaluate include but are not limited to the following:

•whether the tenant is obligated by the terms of the lease agreement to construct or install the leasehold improvements as a condition of the lease;

•whether the landlord can require the lessee to make specified improvements or otherwise enforce its economic rights to those assets;

•whether the tenant is required to provide the landlord with documentation supporting the cost of tenant improvements prior to reimbursement by the landlord;

•whether the landlord is obligated to fund cost overruns for the construction of leasehold improvements;

•whether the leasehold improvements are unique to the tenant or could reasonably be used by other parties; and

•whether the estimated economic life of the leasehold improvements is long enough to allow for a significant residual value that could benefit the landlord at the end of the lease term.

When we conclude that we are the owner of tenant improvements, we record the cost to construct the tenant improvements as an asset and commence rental revenue recognition when the tenant takes possession of or controls the finished space, which is typically when the improvements being recorded as our asset are substantially complete, and our landlord obligation has been materially satisfied. When we conclude that our tenant is the owner of certain tenant improvements, we record our contribution towards those improvements as a lease incentive, which is amortized as a reduction to rental and tenant reimbursement revenue on a straight-line basis over the term of the related lease, and the recognition of rental revenue begins when the tenant takes possession of or controls the space.

In addition, we also record the cost of certain tenant improvements paid for or reimbursed by tenants when we conclude that we are the owner of such tenant improvements using the factors discussed above. For these tenant-funded tenant improvements, we record the amount funded or reimbursed by tenants as deferred revenue, which is amortized and recognized as rental revenue over the term of the related lease beginning upon substantial completion of the leased premises. Consequently, our determination as to whether we, or our tenant, are the owner of tenant improvements for accounting purposes has a significant impact on both the amount and timing of rental revenue that we record related to tenant-funded tenant improvements.

Accounting Pronouncements Adopted during the Year Ended December 31, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the year ended December 31, 2020, we elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. We continue to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

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Financial Instruments- Credit Loss Amendments

On January 1, 2020, we adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by Accounting Standards Codification 842 Leases. As substantially all of our receivables are operating lease receivables there was no material impact to our accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the year ended December 31, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. We have elected not to apply the relief provided by the FASB Staff, and have instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with our tenants in Note 8 to our accompanying consolidated financial statements.

Related-Party Transactions and Agreements

There were no related-party transactions during the three years ended December 31, 2020, other than a consulting agreement with our former Chief Investment Officer ("CIO"), Raymond L. Owens. Mr. Owens retired effective June 30, 2017, and remained a consultant for us until June 30, 2020, earning $18,500 per month. During the years ended December 31, 2020, 2019, and 2018, Piedmont recognized approximately $0.1 million, $0.2 million, and $0.3 million, respectively, of expense related to this consulting agreement. Additionally, during the year ended December 31, 2019, we entered into employment or retirement agreements with certain of our current and former executive officers as more fully described in our Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019.

Contractual Obligations

Our contractual obligations as of December 31, 2020 were as follows (in thousands):

	Payments Due by Period
Contractual Obligations (1)	Total		Less than 1 year		1-3 years			3-5 years		More than 5 years
Long-term debt (2)	$	1,632,610	$	327,610	$	355,000	(3)	$	650,000	$	300,000

(1)Contractual obligations do not include amounts committed for tenant or capital improvements under leases where Piedmont is the lessor. However, see Note 8 to our accompanying consolidated financial statements for details concerning our material lease commitments, the timing of which may fluctuate. Additionally, Piedmont does not have material obligations as lessee under operating lease agreements as of December 31, 2020.

(2)Amounts include principal payments only and balances outstanding as of December 31, 2020, not including approximately $10.6 million of net unamortized issuance discounts, debt issuance costs paid to lenders, or estimated fair value adjustments. We made interest payments, including payments under our interest rate swaps, of approximately $50.7 million during the year ended December 31, 2020, and expect to pay interest in future periods on outstanding debt obligations based on the rates and terms disclosed herein and in Note 4 to our accompanying consolidated financial statements.

(3)Includes the balance outstanding as of December 31, 2020 of the $500 Million Unsecured 2018 Line of Credit. However, we may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided we are not then in default and upon payment of extension fees.

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ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKS

Our future income, cash flows, and estimated fair values of our financial instruments depend in part upon prevailing market interest rates. Market risk is the exposure to loss resulting from changes in interest rates, foreign currency, exchange rates, commodity prices, and equity prices. Our potential for exposure to market risk includes interest rate fluctuations in connection with borrowings under our $500 Million Unsecured 2018 Line of Credit, our Amended and Restated $300 Million Unsecured 2011 Term Loan, and the $250 Million Unsecured 2018 Term Loan. As a result, we believe the primary market risk to which we are exposed is interest rate risk. Many factors, including governmental monetary and tax policies, domestic and international economic and political considerations, and other factors that are beyond our control contribute to interest rate risk, including changes in the method pursuant to which the LIBOR rates are determined and the phasing out of LIBOR after 2021 (see Item 1A. Risk Factors for further discussion of the risks associated with LIBOR). Piedmont has begun an initial evaluation of its contracts and agreements which reference LIBOR and determined that each of these agreements already contain "fallback" language allowing for the substitution of a comparable or successor rate as approved by the respective agent, as defined in the respective agreements. Piedmont will continue to evaluate its contracts as it approaches the December 31, 2021 potential end date for LIBOR.

Our interest rate risk management objectives are to limit the impact of interest rate changes on earnings and cash flow primarily through a low-to-moderate level of overall borrowings, as well as managing the variability in rate fluctuations on our outstanding debt. As such, all of our debt as of December 31, 2020, other than the $500 Million Unsecured 2018 Line of Credit, the Amended and Restated $300 Million Unsecured 2011 Term Loan, and $150 million of our $250 Million Unsecured 2018 Term Loan, is currently based on fixed or effectively-fixed interest rates to hedge against volatility in the credit markets. We do not enter into derivative or interest rate transactions for speculative purposes, as such all of our debt and derivative instruments were entered into for other than trading purposes.

Our financial instruments consist of both fixed and variable-rate debt. As of December 31, 2020, our consolidated principal outstanding for aggregate debt maturities consisted of the following (in thousands):

	2021			2022				2023			2024			2025				Thereafter			Total
Maturing debt:
Variable rate repayments	$	300,000		$	5,000		(2)	$	—		$	—		$	150,000		(3)	$	—		$	455,000
Variable rate average interest rate (1)	1.16		%	1.05		%		—		%	—		%	1.10		%		—		%	1.14		%
Fixed rate repayments	$	27,610		$	—			$	350,000		$	400,000		$	100,000		(3)	$	300,000		$	1,177,610
Fixed rate average interest rate (1)	5.55		%	—		%		3.40		%	4.45		%	3.56		%		3.15		%	3.76		%

(1)See Note 4 to our accompanying consolidated financial statements for further details on our debt structure.

(2)Includes the balance of our $500 Million Unsecured 2018 Line of Credit. However, we may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided we are not then in default and upon payment of extension fees.

(3)Includes the $250 Million Unsecured 2018 Term Loan. The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan leaving the remaining $150 million principal at the variable rate.

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Index to Financial Statements

As of December 31, 2019, our consolidated principal outstanding for aggregate debt maturities consisted of the following (in thousands):

	2020			2021				2022				2023			2024			Thereafter				Total
Maturing debt:
Variable rate repayments	$	—		$	—			$	—		(3)	$	—		$	—		$	100,000		(4)	$	100,000
Variable rate average interest rate (1)	—		%	—		%		—		%		—		%	—		%	3.40		%		3.40		%
Fixed rate repayments	$	985		$	327,702		(2)	$	160,000			$	350,000		$	400,000		$	150,000		(4)	$	1,388,687
Fixed rate average interest rate (1)	5.55		%	3.40		%		3.48		%		3.40		%	4.45		%	4.11		%		3.79		%

(1)See Note 4 to our accompanying consolidated financial statements for further details on our debt structure.

(2)Includes the Amended and Restated $300 Million Unsecured 2011 Term Loan which has a stated variable rate; however, we have entered into interest rate swap agreements which effectively fix, exclusive of changes to our credit rating, the rate on this facility to 3.20% through January 15, 2020.

(3)Piedmont had no balance outstanding on its variable-rate, $500 Million Unsecured 2018 Line of Credit as of December 31, 2019.

(4)Includes the balance of our $250 Million Unsecured 2018 Term Loan. The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $150 million of the principal balance to 4.11% through March 2020 leaving the remaining $100 million principal at the variable rate.

The estimated fair value of our debt above as of December 31, 2020 and 2019 was approximately $1.7 billion and $1.5 billion, respectively. Our interest rate swap agreements in place at December 31, 2020 and December 31, 2019 carried a notional amount totaling $100 million and $450 million, respectively, with a weighted-average fixed interest rate (not including the corporate credit spread) of 2.61% and 2.30%, respectively.

As of December 31, 2020, our total outstanding debt subject to fixed, or effectively fixed, interest rates totaling approximately $1.2 billion has an average effective interest rate of approximately 3.76% per annum with expirations ranging from 2021 to 2030. A change in the market interest rate impacts the net financial instrument position of our fixed-rate debt portfolio but has no impact on interest incurred or cash flows for that portfolio.

As of December 31, 2020, we had $5.0 million outstanding on our $500 Million Unsecured 2018 Line of Credit. Our $500 Million Unsecured 2018 Line of Credit currently has a stated rate of LIBOR plus 0.90% per annum (based on our current corporate credit rating), which, as of December 31, 2020, resulted in an interest rate of 1.05%. The current stated interest rate spread on $150 million of the $250 Million Unsecured 2018 Term Loan that is not effectively fixed through interest rate swaps is LIBOR plus 0.95% (based on our current corporate credit rating), which, as of December 31, 2020, resulted in a total interest rate on $150 million of the $250 Million Unsecured 2018 Term Loan of 1.10%. The current stated interest rate on the Amended and Restated $300 Million Unsecured 2011 Term Loan is LIBOR plus 1.00% (based on our current corporate credit rating), which, as of December 31, 2020, resulted in an interest rate of 1.16%. To the extent that we borrow funds in the future under the $500 Million Unsecured 2018 Line of Credit or potential future variable-rate lines of credit, we would have exposure to increases in interest rates, which would potentially increase our cost of debt. Additionally, a 1.0% increase in variable interest rates on our existing outstanding borrowings as of December 31, 2020 would increase interest expense approximately $4.6 million on a per annum basis.

ITEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The financial statements and supplementary data filed as part of this report are set forth beginning on page F-1 of this report.

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ITEM 9.    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

There were no disagreements with our independent registered public accountants during the years ended December 31, 2020 or 2019.

ITEM 9A.    CONTROLS AND PROCEDURES

Management’s Conclusions Regarding the Effectiveness of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of management, including our Principal Executive Officer and Principal Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) under the Exchange Act as of the end of the period covered by this report. Based upon that evaluation, the Principal Executive Officer and Principal Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this annual report in providing a reasonable level of assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods in SEC rules and forms, including providing a reasonable level of assurance that information required to be disclosed by us in such reports is accumulated and communicated to our management, including our Principal Executive Officer and our Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Report of Management on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining effective internal control over financial reporting, as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act, as a process designed by, or under the supervision of, the principal executive and principal financial officers, or persons performing similar functions, and effected by the board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP and includes those policies and procedures that:

•pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and disposition of our assets;

•provide reasonable assurance that the transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of management and/or members of the board of directors; and

•provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of human error and the circumvention or overriding of controls, material misstatements may not be prevented or detected on a timely basis. In addition, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions or that the degree of compliance with policies or procedures may deteriorate. Accordingly, even internal controls determined to be effective can provide only reasonable assurance that the information required to be disclosed in reports filed under the Exchange Act is recorded, processed, summarized, and represented within the time periods required.

Our management has assessed the effectiveness of our internal control over financial reporting at December 31, 2020. To make this assessment, we used the criteria for effective internal control over financial reporting described in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on this assessment, our management believes that, as of December 31, 2020, our system of internal control over financial reporting was effective.

Piedmont’s independent registered public accounting firm has issued an attestation report on the effectiveness of Piedmont’s internal control over financial reporting, which appears in this Annual Report.

Changes in Internal Control Over Financial Reporting

There have been no significant changes in our internal control over financial reporting during the quarter ended December 31, 2020 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of Piedmont Office Realty Trust, Inc.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Piedmont Office Realty Trust, Inc. and subsidiaries (the “Company”) as of December 31, 2020, based on criteria established in Internal Control —Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2020, of the Company and our report dated February 17, 2021, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Report of Management on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

Atlanta, Georgia

February 17, 2021

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ITEM 9B.    OTHER INFORMATION

None.

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PART III

ITEM 10.    DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Pursuant to Paragraph G(3) of the General Instructions to Form 10-K, the information required by Part III (Items 10, 11, 12, 13, and 14) is being incorporated by reference herein from our definitive proxy statement to be filed with the SEC within 120 days of the end of the fiscal year ended December 31, 2020 in connection with our 2021 Annual Meeting of Stockholders.

We have adopted a Code of Ethics, which is available on Piedmont’s website at www.piedmontreit.com under the “Investor Relations” section. Any amendments to, or waivers of, the Code of Ethics will be disclosed on our website promptly following the date of such amendment or waiver. The information contained on our website is not incorporated herein by reference.

ITEM 11.    EXECUTIVE COMPENSATION

The information required by Item 11 will be set forth in our definitive proxy statement to be filed with the SEC within 120 days of the end of the fiscal year ended December 31, 2020, and is incorporated herein by reference.

ITEM 12.    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by Item 12 will be set forth in our definitive proxy statement to be filed with the SEC within 120 days of the end of the fiscal year ended December 31, 2020, and is incorporated herein by reference.

ITEM 13.    CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

The information required by Item 13 will be set forth in our definitive proxy statement to be filed with the SEC within 120 days of the end of the fiscal year ended December 31, 2020, and is incorporated herein by reference.

ITEM 14.    PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by Item 14 will be set forth in our definitive proxy statement to be filed with the SEC within 120 days of the end of the fiscal year ended December 31, 2020, and is incorporated herein by reference.

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PART IV

ITEM 15.    EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)    1.        The financial statements begin on page F-4 of this Annual Report on Form 10-K, and the list of the financial statements contained herein is set forth on page F-1, which is hereby incorporated by reference.

(a)    2.        Schedule III—Real Estate Assets and Accumulated Depreciation.

Information with respect to this item begins on page S-1 of this Annual Report on Form 10-K. Other schedules are omitted because of the absence of conditions under which they are required or because the required information is given in the financial statements or notes thereto.

(b)    The Exhibits filed in response to Item 601 of Regulation S-K are listed on the Exhibit Index attached hereto.

(c)    See (a) 2. above.

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Index to Financial Statements

SIGNATURES

Pursuant to the requirements of Sections 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized this 17th day of February, 2021.

Piedmont Office Realty Trust, Inc.
(Registrant)
By:	/s/ C. BRENT SMITH
	C. Brent Smith
	Chief Executive Officer, Principal Executive Officer, and Director

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacity as and on the date indicated.

Signature	Title	Date
/s/ FRANK C. MCDOWELL	Chairman, and Director	February 17, 2021
Frank C. McDowell
/s/ DALE H. TAYSOM	Vice-Chairman, and Director	February 17, 2021
Dale H. Taysom
/s/ KELLY H. BARRETT	Director	February 17, 2021
Kelly H. Barrett
/s/ WESLEY E. CANTRELL	Director	February 17, 2021
Wesley E. Cantrell
/s/ GLENN G. COHEN	Director	February 17, 2021
Glenn G. Cohen
/s/ BARBARA B. LANG	Director	February 17, 2021
Barbara B. Lang
/s/ JEFFREY L. SWOPE	Director	February 17, 2021
Jeffrey L. Swope
/s/ C. BRENT SMITH	Chief Executive Officer and Director	February 17, 2021
C. Brent Smith	(Principal Executive Officer)
/s/ ROBERT E. BOWERS	Chief Financial Officer and Executive Vice-President	February 17, 2021
Robert E. Bowers	(Principal Financial Officer)
/s/ LAURA P. MOON	Chief Accounting Officer	February 17, 2021
Laura P. Moon	(Principal Accounting Officer)

56

Index to Financial Statements

EXHIBIT INDEX

TO

2020 FORM 10-K

OF

PIEDMONT OFFICE REALTY TRUST, INC.

Exhibit Number	Description of Document
3.1	Third Articles of Amendment and Restatement of Piedmont Office Realty Trust, Inc. (f/k/a Wells Real Estate Investment Trust, Inc.) (the "Company") (incorporated by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2009, filed on March 16, 2010)
3.2	Articles of Amendment of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on July 6, 2011)
3.3	Articles Supplementary of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on July 6, 2011)
3.4	Articles Supplementary to the Third Articles of Amendment and Restatement of Piedmont Office Realty Trust, Inc., as supplemented and amended (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K, filed on November 14, 2016)
3.5	Articles of Amendment to the Third Articles of Amendment and Restatement of Piedmont Office Realty Trust, Inc., as supplemented and amended (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K, filed on May 23, 2018)
3.6	Amended and Restated Bylaws of the Company (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K, filed on March 19, 2019)
4.1	Indenture, dated May 9, 2013, by and among Piedmont Operating Partnership, LP (the "Operating Partnership"), the Company and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to the Company's Current Report on Form 8-K, filed on May 13, 2013)
4.2	Form of 3.40% Senior Notes due 2023 (included in Exhibit 4.1 hereto)
4.3	Indenture, dated March 6, 2014, by and among the Operating Partnership, Piedmont Office Realty Trust, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to the Company's Current Report on Form 8-K, filed on March 6, 2014)
4.4	Supplemental Indenture, dated March 6, 2014, by and among the Operating Partnership, Piedmont Office Realty Trust, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 to the Company's Current Report on Form 8-K, filed on March 6, 2014)
4.5	Form of 4.450% Senior Notes due 2024 (included in Exhibit 4.2 hereto)
4.6	Supplemental Indenture, dated August 12, 2020, by and among Piedmont Operating Partnership, LP, Piedmont Office Realty Trust, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 to the Company's Current Report on Form 8-K filed on August 12, 2020)
4.7	Form of 3.150% Senior Notes due 2030 (included in Exhibit 4.1) (incorporated by reference to Exhibit 4.3 to the Company's Current Report on Form 8-K filed on August 12, 2020)
4.8	Description of Securities registered pursuant to Section 12 of the Exchange Act (incorporated by reference to Exhibit 4.15 to the Company's Annual Report on Form 10-K for the year ended December 31, 2019, filed on February 19, 2020)
10.1	Amended and Restated Agreement of Limited Partnership of the Operating Partnership, dated January 1, 2000 (incorporated by reference to Exhibit 10.64 to the Company's Annual Report on Form 10-K for the year ended December 31, 2000, filed on March 28, 2001)
10.2	Amendment to Agreement of Limited Partnership of the Operating Partnership, as Amended and Restated as of January 1, 2000, dated April 16, 2007 (incorporated by reference to Exhibit 99.8 to the Company’s Current Report on Form 8-K, filed on April 20, 2007)
10.3	Amendment to Second Amended and Restated Agreement of Limited Partnership of the Operating Partnership, as Amended and Restated as of January 1, 2000, dated August 8, 2007 (incorporated by reference to Exhibit 99.1 to the Company’s Current Report on Form 8-K, filed on August 10, 2007)

57

Index to Financial Statements

10.4	Amended and Restated Dividend Reinvestment Plan of the Company adopted February 24, 2011 (incorporated by reference to Exhibit 99.1 to the Company’s Current Report on Form 8-K, filed on February 24, 2011)
10.5*	Long-Term Incentive Program (as amended and restated effective April 27, 2016) (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2016, filed on August 3, 2016)
10.6*	Long-Term Incentive Program Award Agreement (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2011, filed on November 3, 2011)
10.7*	The Piedmont Office Realty Trust, Inc. Executive Nonqualified Deferred Compensation Plan dated December 5, 2013 (incorporated by reference to Exhibit 10.39 to the Company's Annual Report on Form 10-K for the year ended December 31, 2013, filed on February 18, 2014)
10.8*	The Piedmont Office Realty Trust, Inc. Executive Nonqualified Deferred Compensation Plan Adoption Agreement dated December 5, 2013 (incorporated by reference to Exhibit 10.40 to the Company's Annual Report on Form 10-K for the year ended December 31, 2013, filed on February 18, 2014)
10.9*	Form of Employee Deferred Stock Award Agreement for 2007 Omnibus Incentive Plan of the Company effective April 28, 2015 (incorporated by reference to Exhibit 10.5 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2015, filed on July 29, 2015)
10.10*	Employment Agreement dated February 2, 2007, by and between the Company and Donald A. Miller, CFA (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K, filed on February 5, 2007)
10.11*	Amendment Number One to Employment Agreement dated February 2, 2007, by and between the Company and Donald A. Miller, CFA (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K, filed on September 14, 2011)
10.12*	Employment Agreement dated April 16, 2007, by and between the Company and Robert E. Bowers (incorporated by reference to Exhibit 99.9 to the Company’s Current Report on Form 8-K, filed on April 20, 2007)
10.13*	Employment Agreement dated May 14, 2007, by and between the Company and Laura P. Moon (incorporated by reference to Exhibit 99.3 to the Company’s Current Report on Form 8-K, filed on May 14, 2007)
10.14*	Offer Letter Dated October 17, 2012 among the Company and Robert K. Wiberg (incorporated by reference to Exhibit 10.41 to the Company's Annual Report on Form 10-K for the year ended December 31, 2012, filed on February 27, 2013)
10.15*	Employment Agreement dated January 1, 2019, by and between the Company and Christopher Kollme (incorporated by reference to Exhibit 10.31 to the Company's Annual Report on Form 10-K for the year ended December 31, 2018, filed on February 20, 2019)
10.16*	Retirement Agreement and General Release by and between the Company and Donald A. Miller (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K, filed on March 19, 2019)
10.17*	Employment Agreement, dated as of March 19, 2019, between the Company and C. Brent Smith (incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K, filed on March 19, 2019)
10.18*	Consulting Agreement, dated as of November 28, 2016, by and between the Company and Raymond L. Owens (incorporated by reference to Exhibit 10.29 to the Company's Annual Report on Form 10-K for the year ended December 31, 2016, filed on February 21, 2017)
10.19*	Confidential Retirement Agreement and General Release, dated as of November 28, 2016, by and between the Company and Raymond L. Owens (incorporated by reference to Exhibit 10.30 to the Company's Annual Report on Form 10-K for the year ended December 31, 2016, filed on February 21, 2017)
10.20	Amended and Restated Term Loan Agreement Dated as Of September 28, 2018 by and among Piedmont Operating Partnership, LP, as Borrower, Piedmont Office Realty Trust, Inc., as Parent, JPMorgan Chase Bank, N.A., and SunTrust Robinson Humphrey, Inc., as Co-Lead Arrangers and Book Managers, JPMorgan Chase Bank, N.A., as Administrative Agent, SunTrust Bank as Syndication Agent, and the other financial institutions initially signatory thereto and their assignees (incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on October 2, 2018)

58

Index to Financial Statements

10.21	Loan Agreement dated as of June 23, 2015 between Piedmont 1901 Market LLC, as Borrower and The Prudential Insurance Company of America, as Lender (incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on June 24, 2015)
10.22	First Amendment to the Loan Agreement between Piedmont 1901 Market LLC, as Borrower and The Prudential Insurance Company of America, as Lender (incorporated by reference to Exhibit 10.42 to the Company's Annual Report on Form 10-K for the year ended December 31, 2017, filed on February 21, 2018)
10.23	Open-End Mortgage and Security Agreement (incorporated by reference to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on June 24, 2015)
10.24*	Piedmont Office Realty Trust, Inc. Amended and Restated 2007 Omnibus Incentive Plan (incorporated by reference to Appendix A to the Company's Proxy Statement for its 2017 Annual Meeting of Stockholders filed with the Commission on March 22, 2017)
10.25*	Amendment Number Three to the Piedmont Office Realty Trust, Inc. Long-Term Incentive Program effective May 2, 2017 (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2017, filed on August 2, 2017)
10.26*	Form of Employee Deferred Stock Award Agreement for Amended and Restated 2007 Omnibus Incentive Plan of the Company effective May 2, 2017 (incorporated by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2017, filed on August 2, 2017)
10.27	Term Loan Agreement, dated as of March 29, 2018, by and among Piedmont Operating Partnership, LP, as Borrower, Piedmont Office Realty Trust, Inc., as Parent, U.S. Bank National Association, PNC Capital Markets LLC, and SunTrust Robinson Humphrey, Inc., as Joint Lead Arrangers and Joint Book Runners, U.S. Bank National Association, as Administrative Agent, PNC Bank, National Association and SunTrust Bank as Syndication Agents, and the other banks signatory thereto as Lenders (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed April 3, 2018)
10.28	Amendment No. 1, dated as of September 28, 2018, to the Term Loan Agreement between Piedmont Operating Partnership, LP, as Borrower and U.S. Bank National Association as Administrative Agent dated as of March 29, 2018 (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2018, filed on October 30, 2018)
10.29	Amendment No. 2, dated as of March 3, 2020, to the Term Loan Agreement dated March 29, 2018, between Piedmont Operating Partnership, LP, as Borrower and U.S. Bank National Association as Administrative Agent (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2020, filed on April 29, 2020)
10.30	Revolving Credit Agreement Dated as of September 28, 2018 by and among Piedmont Operating Partnership, LP, as Borrower, Piedmont Office Realty Trust, Inc., as Parent, JPMorgan Chase Bank, N.A., SunTrust Robinson Humphrey, Inc., U.S. Bank National Association and PNC Capital Markets LLC, as Joint Lead Arrangers and Joint Bookrunners, JPMorgan Chase Bank, N.A., as Administrative Agent, SunTrust Bank, U.S. Bank National Association and PNC Bank, National Association, as Syndication Agents, Bank Of America, N.A., BMO Harris Bank, N.A., Branch Banking and Trust Company, Morgan Stanley Senior Funding, Inc., TD Bank, N.A., The Bank Of Nova Scotia and Wells Fargo Bank, N.A. as Documentation Agents, and the other financial institutions initially signatory thereto and their assignees (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed October 2, 2018)
10.31*	Form of Employee Deferred Stock Award Agreement for Amended and Restated 2007 Omnibus Incentive Plan of the Company effective February 19, 2020 (incorporated by reference to Exhibit 10.33 to the Company's Annual Report on Form 10-K for the year ended December 31, 2019, filed on February 19, 2020)
10.32*	Form of Director Deferred Stock Award Agreement for Amended and Restated 2007 Omnibus Incentive Plan of the Company effective February 19, 2020 (incorporated by reference to Exhibit 10.34 to the Company's Annual Report on Form 10-K for the year ended December 31, 2019, filed on February 19, 2020)
10.33	Purchase and Sale Agreement Between SPUS7 Galleria, LP, as Seller and Piedmont Dallas Galleria, LLC, as Purchaser (incorporated by reference to Exhibit 2.1 to the Company's Current Report on Form 8-K filed February 12, 2020)

59

Index to Financial Statements

10.34	Term Loan Agreement, dated February 10, 2020, by and among Piedmont Operating Partnership, LP, as Borrower, Piedmont Office Realty Trust, Inc. as Parent, Suntrust Robinson Humphrey, Inc., as Lead Arranger and Book Manager, Truist Bank, as Administrative Agent, and the other financial institutions initially signatory hereto and their assignees as Lenders (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on February 12, 2020)
10.35	Amendment No. 1 to Term Loan Agreement, dated March 24, 2020, by and among Piedmont Operating Partnership, LP, as Borrower, Truist Bank, as administrative agent and lender, and JPMorgan Chase Bank, N.A. and U.S. Bank National Association, as new Lenders (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on March 30, 2020)
10.36*	Piedmont Office Realty Trust, Inc. Long-Term Incentive Program Award Agreement dated May 3, 2019 (incorporated by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2020, filed on April 29, 2020)
10.37*	Amendment No. 4 to Piedmont Office Realty Trust, Inc.'s Long-Term Incentive Program effective March 19, 2020(incorporated by reference to Exhibit 10.3 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2020, filed on April 29, 2020)
10.38*	Piedmont Office Realty Trust, Inc. Long-Term Incentive Program Award Agreement effective March 19, 2020 (incorporated by reference to Exhibit 10.4 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2020, filed on April 29, 2020)
21.1	List of Subsidiaries of the Company
22.1	Subsidiary Issuer of Guaranteed Securities
23.1	Consent of Deloitte & Touche LLP
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Financial Officer pursuant to Section 302 of Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase
104.1	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

*    Identifies each management contract or compensatory plan required to be filed.

60

Index to Financial Statements

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Financial Statements	Page
Report of Independent Registered Public Accounting Firm	F-2
Consolidated Balance Sheets as of December 31, 2020 and 2019	F-4
Consolidated Statements of Income for the Years December 31, 2020, 2019, and 2018	F-5
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2020, 2019, and 2018	F-6
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2020, 2019, and 2018	F-7
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019, and 2018	F-8
Notes to Consolidated Financial Statements	F-9
Financial Statement Schedule
Schedule III - Real Estate Assets and Accumulated Depreciation	S-1

F-1

Index to Financial Statements

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of Piedmont Office Realty Trust, Inc.:

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Piedmont Office Realty Trust, Inc. and subsidiaries (the "Company") as of December 31, 2020 and 2019, the related consolidated statements of income, comprehensive income, stockholders’ equity, and cash flows, for each of the three years in the period ended December 31, 2020, and the related notes and the schedule listed in the Index at Item 15(a) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 17, 2021, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Revenues – Refer to Note 2 (Revenue Recognition) to the financial statements

Critical Audit Matter Description

Rental and tenant reimbursement revenue consists of revenue from leases with the Company’s tenants, as well as reimbursements for services prescribed by such leases. The Company recognizes fixed base rental payments, as well as any fixed portions of reimbursement income, on a straight-line basis over the term of the related lease. The timing of rental revenue recognition is largely dependent on whether the Company is the owner of tenant improvements at the leased property. In determining whether the Company or the tenant owns such tenant improvements, the Company considers a number of factors, including, among other things: whether the tenant is obligated by the terms of the lease agreement to construct or install the leasehold improvements as a condition of the lease; whether the landlord can require the lessee to make specified improvements or otherwise enforce its economic rights to those assets; whether the tenant is required to provide the landlord with documentation supporting the cost of tenant improvements prior to reimbursement by the landlord; and whether the leasehold improvements are unique to the tenant or could reasonably be used by other parties.

F-2

Index to Financial Statements

The determination of whether the Company or its tenant owns the tenant improvements and the timing and amount of revenue recognition requires the exercise of significant judgment by management based on the facts and circumstances of the specific lease arrangement and is not based on any one factor. Auditing management’s conclusions with respect to these matters often is complex and requires subjective judgment.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management’s determination of the owner of the tenant improvements and the related impact on the timing and amount of revenue recognition, included the following, among others:

•We tested the effectiveness of controls over revenue recognition, including the determination of the owner of tenant improvements and the timing and amounts of rental revenues to be recognized over the term of the related lease.

•We selected a sample of lease agreements and performed the following to evaluate the appropriateness of management’s conclusions regarding the owner of the tenant improvements and the timing and amount of revenue recognition:

◦Evaluated the reasonableness and consistency of the factors considered by management to determine the owner of the tenant improvements and compared such factors to the terms in the lease agreement and other supporting documents.

◦Tested the timing and amounts recognized as rental revenue, including any amortization of deferred revenue or lease incentives, by independently calculating such rental revenue amounts to be recognized and comparing it to the amounts recorded by the Company.

/s/ Deloitte & Touche LLP

Atlanta, Georgia  

February 17, 2021

We have served as the Company's auditor since 2018.

F-3

Index to Financial Statements

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per-share amounts)

	December 31, 2020		December 31, 2019
Assets:
Real estate assets, at cost:
Land	$	484,466	$	485,560
Buildings and improvements, less accumulated depreciation of $767,542 and $730,750 as of December 31, 2020 and December 31, 2019, respectively	2,424,225		2,212,935
Intangible lease assets, less accumulated amortization of $67,850 and $50,766 as of December 31, 2020 and December 31, 2019, respectively	90,594		74,405
Construction in progress	56,749		29,920
Real estate assets held for sale, net	—		139,690
Total real estate assets	3,056,034		2,942,510
Cash and cash equivalents	7,331		13,545
Tenant receivables, net of allowance for doubtful accounts of $4,553 and $0 as of December 31, 2020 and December 31, 2019, respectively	8,448		8,226
Straight-line rent receivables	151,153		132,342
Notes receivable	118,500		—
Restricted cash and escrows	1,883		1,841
Prepaid expenses and other assets	23,277		25,427
Goodwill	98,918		98,918
Deferred lease costs, less accumulated amortization of $172,619 and $147,324 as of December 31, 2020 and December 31, 2019, respectively	274,266		265,747
Other assets held for sale, net	—		28,201
Total assets	$	3,739,810	$	3,516,757
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $10,932 and $7,626 as of December 31, 2020 and December 31, 2019, respectively	$	1,594,068	$	1,292,374
Secured debt, inclusive of premiums and unamortized debt issuance costs of $326 and $343 as of December 31, 2020 and December 31, 2019, respectively	27,936		189,030
Accounts payable, accrued expenses, and accrued capital expenditures	111,997		117,496
Dividends payable	25,683		26,427
Deferred income	36,891		34,609
Intangible lease liabilities, less accumulated amortization of $27,344 and $19,607 as of December 31, 2020 and December 31, 2019, respectively	35,440		25,069
Interest rate swaps	9,834		5,121
Other liabilities held for sale	—		7,657
Total liabilities	1,841,849		1,697,783
Commitments and Contingencies (Note 8)	—		—
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized, none outstanding as of December 31, 2020 or December 31, 2019	—		—
Preferred stock, no par value, 100,000,000 shares authorized, none outstanding as of December 31, 2020 or December 31, 2019	—		—
Common stock, $0.01 par value; 750,000,000 shares authorized, 123,839,419 shares issued and outstanding as of December 31, 2020; and 125,783,408 shares issued and outstanding at December 31, 2019	1,238		1,258
Additional paid-in capital	3,693,996		3,686,398
Cumulative distributions in excess of earnings	(1,774,856)		(1,871,375)
Other comprehensive income/(loss)	(24,100)		967
Piedmont stockholders’ equity	1,896,278		1,817,248
Noncontrolling interest	1,683		1,726
Total stockholders’ equity	1,897,961		1,818,974
Total liabilities and stockholders’ equity	$	3,739,810	$	3,516,757

See accompanying notes.

F-4

Index to Financial Statements

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except share and per-share amounts)

	Years Ended December 31,
	2020		2019		2018
Revenues:
Rental and tenant reimbursement revenue	$	519,953	$	511,905	$	504,410
Property management fee revenue	2,867		3,398		1,450
Other property related income	12,204		17,875		20,107
	535,024		533,178		525,967
Expenses:
Property operating costs	214,933		211,380		209,338
Depreciation	110,575		106,015		107,956
Amortization	93,294		76,666		63,295
Impairment loss on real estate assets	—		8,953		—
General and administrative	27,464		37,895		29,713
	446,266		440,909		410,302
Other income (expense):
Interest expense	(54,990)		(61,594)		(61,023)
Other income	2,587		1,571		1,638
Loss on extinguishment of debt	(9,336)		—		(1,680)
Gain on sale of real estate assets	205,666		197,010		75,691
	143,927		136,987		14,626
Net income	232,685		229,256		130,291
Net loss applicable to noncontrolling interest	3		5		5
Net income applicable to Piedmont	$	232,688	$	229,261	$	130,296
Per share information— basic and diluted:
Net income applicable to common stockholders	$	1.85	$	1.82	$	1.00
Weighted-average shares outstanding—basic	125,730,460		125,709,207		130,161,202
Weighted-average shares outstanding—diluted	126,104,321		126,182,137		130,635,650

See accompanying notes.

F-5

Index to Financial Statements

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	Years Ended December 31,
	2020			2019			2018
Net income applicable to Piedmont		$	232,688		$	229,261		$	130,296
Other comprehensive income/(loss):
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(26,794)			(5,659)			692
Plus/(less): Reclassification of net loss/(gain) included in net income (See Note 5)	1,727			(1,836)			(300)
Other comprehensive income/(loss)		(25,067)			(7,495)			392
Comprehensive income applicable to Piedmont		$	207,621		$	221,766		$	130,688

See accompanying notes.

F-6

Index to Financial Statements

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands, except per-share amounts)

	Common Stock			Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings		Other Comprehensive Income/(Loss)		Noncontrolling Interest		Total Stockholders’ Equity
	Shares	Amount
Balance, December 31, 2017	142,359	$	1,424	$	3,677,360	$	(1,702,281)	$	8,164	$	1,822	$	1,986,489
Cumulative effect of accounting change (adoption of ASU 2016-01)	—	—		—		94		(94)		—		—
Share repurchases as part of announced plan	(16,495)	(165)		—		(301,513)		—		—		(301,678)
Offering costs	—	—		(85)		—		—		—		(85)
Dividends to common stockholders ($0.84 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(82)		(109,138)		—		(45)		(109,265)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	355	3		5,993		—		—		—		5,996
Net loss applicable to noncontrolling interest	—	—		—		—		—		(5)		(5)
Net income applicable to Piedmont	—	—		—		130,296		—		—		130,296
Other comprehensive income	—	—		—		—		392		—		392
Balance, December 31, 2018	126,219	1,262		3,683,186		(1,982,542)		8,462		1,772		1,712,140
Share repurchases as part of announced plan	(728)	(7)		—		(12,475)		—		—		(12,482)
Offering costs	—	—		(710)		—		—		—		(710)
Dividends to common stockholders ($0.84 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(228)		(105,619)		—		(41)		(105,888)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	292	3		4,150		—		—		—		4,153
Net loss applicable to noncontrolling interest	—	—		—		—		—		(5)		(5)
Net income applicable to Piedmont	—	—		—		229,261		—		—		229,261
Other comprehensive loss	—	—		—		—		(7,495)		—		(7,495)
Balance, December 31, 2019	125,783	1,258		3,686,398		(1,871,375)		967		1,726		1,818,974
Share repurchases as part of announced plan	(2,190)	(22)		—		(30,649)		—		—		(30,671)
Dividends to common stockholders ($0.84 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(5)		(105,520)		—		(40)		(105,565)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	246	2		7,603		—		—		—		7,605
Net loss applicable to noncontrolling interest	—	—		—		—		—		(3)		(3)
Net income applicable to Piedmont	—	—		—		232,688		—		—		232,688
Other comprehensive loss	—	—		—		—		(25,067)		—		(25,067)
Balance, December 31, 2020	123,839	$	1,238	$	3,693,996	$	(1,774,856)	$	(24,100)	$	1,683	$	1,897,961

See accompanying notes.

F-7

Index to Financial Statements

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	Years Ended December 31,
	2020		2019		2018
Cash Flows from Operating Activities:
Net income	$	232,685	$	229,256	$	130,291
Operating distributions received from unconsolidated joint ventures	—		—		10
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	110,575		106,015		107,956
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	2,080		87		(250)
Other amortization	84,534		71,609		58,330
Impairment loss on real estate assets	—		8,953		—
Loss on extinguishment of debt	349		—		1,665
General reserve for uncollectible accounts	4,553		—		—
Stock compensation expense	9,718		15,446		9,737
Gain on sale of real estate assets	(205,666)		(197,010)		(75,691)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(30,887)		(15,706)		(16,094)
Decrease/(increase) in prepaid expenses and other assets	823		309		(3,095)
Cash paid upon settlement of interest rate swaps	(19,930)		—		—
Increase/(decrease) in accounts payable and accrued expenses	6,264		(11,251)		(9,092)
(Decrease)/increase in deferred income	(1,814)		776		(898)
Net cash provided by operating activities	193,284		208,484		202,869
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(417,056)		(326,200)		(151,914)
Capitalized expenditures	(112,580)		(103,553)		(72,105)
Sales proceeds from wholly-owned properties	360,094		589,767		575,227
Note receivable issuance	—		—		(3,200)
Note receivable repayment	—		—		3,200
Deferred lease costs paid	(28,334)		(25,639)		(27,430)
Net cash (used in)/provided by investing activities	(197,876)		134,375		323,778
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(1,363)		(151)		(1,040)
Proceeds from debt	1,174,383		592,000		977,062
Repayments of debt	(1,035,077)		(798,019)		(1,020,455)
Discount paid due to loan modification	(525)		—		—
Costs of issuance of common stock	—		(710)		(85)
Value of shares withheld for payment of taxes related to employee stock compensation	(2,703)		(3,295)		(2,219)
Repurchases of common stock as part of announced plan	(29,986)		(16,899)		(298,538)
Dividends paid and discount on dividend reinvestments	(106,309)		(106,433)		(184,093)
Net cash used in financing activities	(1,580)		(333,507)		(529,368)
Net (decrease)/increase in cash, cash equivalents, and restricted cash and escrows	(6,172)		9,352		(2,721)
Cash, cash equivalents, and restricted cash and escrows, beginning of year	15,386		6,034		8,755
Cash, cash equivalents, and restricted cash and escrows, end of year	$	9,214	$	15,386	$	6,034

See accompanying notes.

F-8

Index to Financial Statements

PIEDMONT OFFICE REALTY TRUST, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

DECEMBER 31, 2020, 2019, AND 2018

1.    Organization

Piedmont Office Realty Trust, Inc. (“Piedmont”) (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the ownership, management, development, redevelopment, and operation of high-quality, Class A office properties located primarily in select sub-markets within seven major Eastern U.S. office markets, with a majority of its revenue being generated from the Sunbelt. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of its buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through its wholly-owned subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through various joint ventures which it controls. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of December 31, 2020, Piedmont owned 54 in-service office properties and one redevelopment asset in select sub-markets located within seven major U.S. office markets: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York. As of December 31, 2020, Piedmont's 54 in-service office properties comprised approximately 16.4 million square feet (unaudited) of primarily Class A commercial office space and were 86.8% leased.

2.    Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") of which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors.

Piedmont owns a majority interest in four properties through three joint ventures. Two of these joint ventures, 1201 and 1225 Eye Street, NW Associates, own the 1201 and 1225 Eye Street buildings, respectively, in Washington, D.C. The other joint venture, Piedmont-CNL Towers Orlando, LLC, owns CNL Center I and II, in Orlando, Florida. All three joint venture investments are consolidated under the voting model. Accordingly, Piedmont’s consolidated financial statements include the accounts of 1201 Eye Street, NW Associates, LLC, 1225 Eye Street, NW Associates, LLC, and Piedmont-CNL Towers Orlando, LLC.

All inter-company balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity and consequently the assets of the special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

F-9

Index to Financial Statements

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. The most significant of these estimates include the underlying cash flows and holding periods used in assessing impairment, judgements regarding the recoverability of goodwill, and the assessment of the collectibility of receivables. Future impacts of the COVID-19 pandemic on Piedmont and its tenants may affect these and other estimates used in the preparation of these financial statements. While Piedmont has made, what it believes to be, appropriate accounting estimates based on the facts and circumstances available as of the reporting date, actual results could materially differ from those estimates.

Real Estate Assets

Piedmont classifies its real estate assets as long-lived assets held for use or as long-lived assets held for sale. Held for use assets are stated at cost, as adjusted for any impairment loss, less accumulated depreciation. Held for sale assets are carried at lower of depreciated cost or estimated fair value, less estimated costs to sell. Piedmont generally reclassifies assets as held for sale once a sales contract has been executed and earnest money has become non-refundable.

Amounts capitalized to real estate assets consist of the cost of acquisition or construction, any tenant improvements or major improvements, betterments that extend the useful life of the related asset, and transaction costs associated with the acquisition of an individual asset that does not qualify as a business combination. All repairs and maintenance are expensed as incurred. Additionally, Piedmont capitalizes interest while the development, or redevelopment, of a real estate asset is in progress.

Piedmont’s real estate assets are depreciated or amortized using the straight-line method over the following useful lives:

Buildings	40 years
Building improvements	5-25 years
Land improvements	20-25 years
Tenant allowances	Lease term
Furniture, fixtures, and equipment	3-10 years
Intangible lease assets	Lease term

Piedmont continually monitors events and changes in circumstances that could indicate that the carrying amounts of the real estate and related intangible assets of either operating properties or properties under construction in which Piedmont has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present, management assesses whether the respective carrying values will be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition for assets held for use, or from the estimated fair values, less costs to sell, for assets held for sale. In the event that the expected undiscounted future cash flows for assets held for use or the estimated fair value, less costs to sell, for assets held for sale do not exceed the respective asset carrying value, management adjusts such assets to the respective estimated fair values and recognizes an impairment loss. Estimated fair values are calculated based on the following information, depending upon availability, in order of preference: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of undiscounted cash flows, including estimated sales value (which is based on key assumptions such as estimated market rents, lease-up periods, estimated lease terms, and capitalization and discount rates) less estimated selling costs.

Fair Value of Assets and Liabilities of Acquired Properties

Upon the acquisition of real properties, Piedmont records the fair value of properties (plus any related acquisition costs) allocated based on relative fair value as tangible assets, consisting of land and building, and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases and the value of in-place leases, based on their estimated fair values. Substantially all of Piedmont's property acquisitions qualify as asset acquisitions under Accounting Standards Codification ("ASC") 805, Business Combinations.

The estimated fair values of the tangible assets of an acquired property are determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land and building based on management’s determination of the estimated fair value of these assets. Management relies on a sales comparison approach using closed land sales and listings in determining the land value, and determines the as-if-vacant estimated fair value of a property using methods similar to those used by independent appraisers. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In

F-10

Index to Financial Statements

estimating carrying costs, management includes real estate taxes, insurance, and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates the cost to execute similar leases including leasing commissions, legal, and other related costs.

The estimated fair values of above-market and below-market in-place leases are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) management’s estimate of market rates for the corresponding in-place leases, measured over a period equal to the remaining terms of the leases, taking into consideration the probability of renewals for any below-market leases. The capitalized above-market and below-market lease values are recorded as intangible lease assets or liabilities and amortized as an adjustment to rental revenues over the remaining terms of the respective leases.

The estimated fair values of in-place leases include an estimate of the direct costs associated with obtaining the acquired or "in place" tenant, estimates of opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease. The amount capitalized as direct costs associated with obtaining a tenant include commissions, tenant improvements, and other direct costs and are estimated based on management’s consideration of current market costs to execute a similar lease. These direct lease origination costs are included in deferred lease costs in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of opportunity costs is calculated using the contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. These lease intangibles are included in intangible lease assets in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases.

Gross intangible assets and liabilities, inclusive of amounts classified as real estate assets held for sale, recorded at acquisition as of December 31, 2020 and 2019, respectively, are as follows (in thousands):

	December 31, 2020		December 31, 2019
Intangible Lease Assets:
Above-Market In-Place Lease Assets	$	2,167	$	2,082
In-Place Lease Valuation	$	156,277	$	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)	$	250,367	$	256,627
Intangible Lease Liabilities (Below-Market In-Place Leases)	$	62,784	$	84,292

For the years ended December 31, 2020, 2019, and 2018, respectively, Piedmont recognized amortization of intangible lease costs, included as a component of Amortization in the accompanying consolidated statements of income, as follows (in thousands):

	2020		2019		2018
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$	77,000	$	62,413	$	48,940
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$	12,191	$	8,322	$	7,615

F-11

Index to Financial Statements

Net intangible assets and liabilities as of December 31, 2020 will be amortized as follows (in thousands):

	Intangible Lease Assets
	Above-Market In-place Lease Assets		In-Place Lease Valuation		Intangible Lease Origination Costs (1)		Below-Market In-place Lease Liabilities
For the year ending December 31:
2021	$	420	$	27,520	$	38,659	$	10,899
2022	300		20,662		30,447		8,422
2023	103		13,922		21,019		5,139
2024	70		9,140		14,462		3,238
2025	6		5,657		10,069		2,072
Thereafter	18		12,776		24,881		5,670
	$	917	$	89,677	$	139,537	$	35,440
Weighted-Average Amortization Period (in years)	3		5		5		5

(1)Included as a component of Deferred Lease Costs in the accompanying consolidated balance sheets.

Cash and Cash Equivalents

Piedmont considers all highly-liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents include cash and short-term investments. The majority of Piedmont’s cash and cash equivalents are held at major commercial banks and at times may exceed the Federal Deposit Insurance Corporation limit of $250,000. Short-term investments consist of investments in money market accounts stated at cost, which approximates estimated fair value, and available-for-sale securities resulting from Piedmont's non-qualified deferred compensation program carried at estimated fair value.

Tenant Receivables and Straight-line Rent Receivables

Tenant receivables are comprised of rental and reimbursement billings due from tenants, and straight-line rent receivables representing the cumulative amount of future adjustments necessary to present rental income on a straight-line basis. Effective January 1, 2019, Piedmont adopted ASC 842 Leases ("ASC 842"), as well as Accounting Standards Update ("ASU"), ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments—Credit Losses ("ASU 2018-19") which clarifies that operating lease receivables are within the scope of ASC 842; therefore, Piedmont has elected to evaluate the collectibility of its operating lease receivables on a tenant/lease-specific basis and, as of January 1, 2019, began recognizing changes in the collectibility assessment of its operating lease receivables as a reduction of rental and tenant reimbursement revenue, rather than as bad debt expense, a component of property operating costs. Prior to the adoption of ASC 842, during the year ended December 31, 2018, Piedmont recognized approximately $91,000 of expense related to uncollectible operating lease receivables as additional property operating costs. See further discussion of collectibility assessments of tenant receivables and other lease-related assets due to COVID-19 pandemic during 2020 in Note 8 and in Allowance for Doubtful Accounts below.

Allowance for Doubtful Accounts

As detailed above, Piedmont records contra-revenue adjustments for tenant/lease-specific changes in the collectibility assessments of its operating lease receivables as a reduction of rental and tenant reimbursement revenues in accordance with ASC 842. These charges reduce tenant and straight-line rent receivable to net realizable value upon recognition. However, during the year ended December 31, 2020, Piedmont also established a general reserve, with charges related to the establishment of this reserve recorded as a reduction of rental and tenant reimbursement revenues, and the balance of the reserve is disclosed as allowance for doubtful accounts in the accompanying consolidated balance sheets. Unlike tenant-specific adjustments recorded in accordance with ASC 842, the general reserve is for amounts that may become uncollectible in the future.

F-12

Index to Financial Statements

Restricted Cash and Escrows

Restricted cash and escrows principally relate to the following types of items:

•escrow accounts held by lenders to pay future real estate taxes, insurance, debt service, and tenant improvements;

•net sales proceeds from property sales held by qualified intermediary for potential Section 1031 exchange;

•earnest money paid in connection with future acquisitions; and

•security and utility deposits paid by tenants per the terms of their respective leases.

Restricted cash and escrows are generally reclassified to other asset or liability accounts upon being used to purchase assets, satisfy obligations, or settle tenant obligations.

Prepaid Expenses and Other Assets

Prepaid expenses and other assets are primarily comprised of the following items:

•prepaid property taxes, insurance and operating costs;

•receivables which are unrelated to tenants, for example, insurance proceeds receivable from insurers related to casualty losses; and

•equipment, furniture and fixtures, and tenant improvements for Piedmont’s corporate office and property management office space, net of accumulated depreciation.

Prepaid expenses and other assets will be expensed as utilized or depreciated in the case of Piedmont's corporate assets. Balances without a future economic benefit are expensed as they are identified.

Goodwill

Goodwill is the excess of cost of an acquired entity over the amounts specifically assigned to assets acquired and liabilities assumed in purchase accounting for business combinations. In conjunction with Piedmont's change in segment reporting (see Note 17), Piedmont has reallocated its goodwill to each of its seven reporting units on the basis of relative fair value of each reporting unit compared to the total of all reporting units. Piedmont tests the carrying value of the goodwill assigned to each of its seven reporting units for impairment on an annual basis, or on an interim basis if an event occurs or circumstances change that would indicate that a material indicator of impairment exists. Such interim circumstances may include, but are not limited to, significant adverse changes in legal factors or in the general business climate, adverse action or assessment by a regulator, unanticipated competition, the loss of key personnel, or persistent declines in an entity’s stock price below carrying value of the entity. Piedmont first assesses qualitative factors to determine whether the existence of events or circumstances leads to a determination that a material indicator of impairment exists. If Piedmont concludes, after assessing the totality of events and circumstances during the qualitative analysis, that a material indicator does exist and that it is more likely than not that the goodwill balance in one or more reporting units is impaired, then Piedmont will recognize a goodwill impairment loss equal to the excess of the reporting unit’s carrying amount over its estimated fair value (not to exceed the total goodwill allocated to that reporting unit). There were no changes in the carrying amount of Piedmont's goodwill during the year ended December 31, 2020.

Interest Rate Derivatives

Piedmont periodically enters into interest rate derivative agreements to hedge its exposure to changing interest rates. As of December 31, 2020 and 2019, all of Piedmont's interest rate derivatives were designated as effective cash flow hedges and carried on the balance sheet at estimated fair value. Piedmont reassesses the effectiveness of its derivatives designated as cash flow hedges on a regular basis to determine if they continue to be highly effective and if the forecasted transactions remain highly probable. Piedmont does not use derivatives for trading or speculative purposes.

The changes in estimated fair value of interest rate swap agreements designated as effective cash flow hedges are recorded in other comprehensive income (“OCI”), and subsequently reclassified to earnings when the hedged transactions occur. The estimated fair value of the interest rate derivative agreement is recorded as interest rate derivative asset or as interest rate derivative liability in the accompanying consolidated balance sheets. Amounts received or paid under interest rate derivative agreements are recorded as reductions or additions to interest expense in the consolidated statements of income as incurred. Additionally, when Piedmont settles forward starting swap agreements, any gain or loss is recorded as accumulated other comprehensive income and is amortized to interest expense over the term of the respective notes on a straight line basis (which approximates the effective interest method). Further, Piedmont classifies cash flows from the settlement of hedging derivative instruments in the same category as the underlying exposure which is being hedged. Settlements resulting from the hedge of

F-13

Index to Financial Statements

Piedmont's exposure to interest rate changes are classified as operating cash flows in the accompanying consolidated statements of cash flows.

Deferred Lease Costs

Deferred lease costs are comprised of costs and incentives incurred to acquire operating leases. In addition to direct costs, deferred lease costs also include intangible lease origination costs related to in-place leases acquired as part of a property acquisition. Prior to the adoption of ASC 842, Piedmont capitalized direct payroll costs incurred related to negotiating and executing specific leases of approximately $0.3 million for the year ended December 31, 2018. ASC 842 prohibited the capitalization of such costs beginning January 1, 2019.

Deferred lease costs are amortized on a straight-line basis over the terms of the related underlying leases in the accompanying consolidated statements of income as follows:

•Approximately $60.2 million, $50.3 million, and $43.6 million of deferred lease costs for the years ended December 31, 2020, 2019, and 2018, respectively, are included in amortization expense; and

•Approximately $3.4 million, $3.2 million, and $2.6 million, of deferred lease costs related to lease incentives granted to tenants for the years ended December 31, 2020, 2019, and 2018, respectively, was included as an offset to rental and tenant reimbursement revenue.

Upon receipt of a lease termination notice, Piedmont adjusts the amortization of any unamortized deferred lease costs to be recognized ratably over the revised remaining term of the lease after giving effect to the termination notice. If there is no remaining lease term and no other obligation to provide the tenant space in the property, then any unamortized tenant-specific costs are recognized immediately upon termination.

Debt

When mortgage debt is assumed upon the acquisition of real property, Piedmont adjusts the loan to relative fair value with a corresponding adjustment to building and other intangible assets assumed as part of the purchase. The fair value adjustment is amortized to interest expense over the term of the loan using the effective interest method. Amortization of such fair value adjustments was approximately $0.5 million for each of the years ended December 31, 2020, 2019, and 2018, respectively.

Piedmont records premiums and discounts on debt issuances as an increase/decrease to the principal amount of the loan in the accompanying consolidated balance sheets, and amortizes such premiums or discounts as a component of interest expense over the life of the underlying loan facility using the effective interest method. Piedmont recorded discount amortization of approximately $0.3 million, $0.2 million and $0.2 million for the years ended December 31, 2020, 2019, and 2018, respectively.

Piedmont presents all debt issuance costs as an offset to the principal amount of debt in the accompanying consolidated balance sheets. Piedmont amortizes these costs to interest expense on a straight-line basis (which approximates the effective interest rate method) over the terms of the related financing arrangements. Piedmont recognized amortization of such costs for the years ended December 31, 2020, 2019, and 2018 of approximately $3.0 million, $2.4 million, and $2.4 million, respectively.

Deferred income

Deferred income is primarily comprised of the following items:

•prepaid rent from tenants;

•tenant reimbursements related to operating expense or property tax expenses which may be due to tenants as part of an annual operating expense reconciliation; and

•tenant improvement allowance overages where Piedmont owns the underlying improvements.

Deferred income related to prepaid rents from tenants will be recognized as income in the period it is earned. Amounts related to operating expense reconciliations or property tax expense are relieved when the tenant's reconciliation is completed in accordance with the underlying lease, and payment is issued to the tenant. Tenant improvement allowance overages paid by the tenant, where Piedmont owns all of the underlying improvements, are recorded as deferred income and amortized on a straight-line basis into rental and tenant reimbursement revenue over the term of the respective leases.

F-14

Index to Financial Statements

Shares-in-trust

To date, Piedmont has not issued any shares-in-trust; however, under Piedmont’s charter, it has authority to issue a total of 150,000,000 shares-in-trust, which would be issued only in the event that there is a purported transfer of, or other change in or affecting the ownership of, Piedmont’s capital stock that would result in a violation of the ownership limits that are included in Piedmont’s charter to protect its REIT status.

Preferred Stock

To date, Piedmont has not issued any shares of preferred stock; however, Piedmont is authorized to issue up to 100,000,000 shares of one or more classes or series of preferred stock. Piedmont’s board of directors may determine the relative rights, preferences, and privileges of any class or series of preferred stock that may be issued, and can be more beneficial than the rights, preferences, and privileges attributable to Piedmont’s common stock.

Common Stock

Under Piedmont’s charter, it has authority to issue a total of 750,000,000 shares of common stock with a par value of $0.01 per share. Each share of common stock is entitled to one vote and participates in distributions equally. In February 2020, the board of directors re-authorized the stock repurchase program for up to $200 million in share repurchases under which Piedmont may repurchase its own shares from time to time, in accordance with applicable securities laws, in the open market or in privately negotiated transactions. The timing of repurchases is dependent upon market conditions and other factors, and repurchases may be commenced or suspended from time to time in Piedmont's discretion, without prior notice. As of December 31, 2020, Piedmont had approximately $169.3 million of remaining capacity under the program which may be used for share repurchases through February 2022.

Equity Securities Issued At-The-Market

Under Piedmont's at-the-market stock offering program ("ATM program"), Piedmont may offer and sell shares of its common stock from time to time in “at-the-market” offerings with an aggregate gross sales price of up to $250 million. In connection with the ATM Program, Piedmont may, at its discretion, enter into forward equity sale agreements. The use of a forward equity sale agreement would allow Piedmont to lock in a share price on the sale of shares of its common stock at the time the agreement is executed, but defer receiving the proceeds from the sale of shares until a later date, allowing Piedmont to better align such funding with its capital needs. Sales of shares of Piedmont’s common stock through its banking relationships, if any, will be made in amounts and at times to be determined by Piedmont from time to time, but Piedmont has no obligation to sell any of the shares in the offering and may suspend sales in connection with the offering at any time. Sales of Piedmont's common stock under forward equity sale agreements, if undertaken, meet the derivatives and hedging guidance scope exception to be accounted for as equity instruments based on the following assessments: (i) none of the agreements’ exercise contingencies were based on observable markets or indices besides those related to the market for Piedmont's own stock price and operations; and (ii) none of the settlement provisions precluded the agreements from being indexed to Piedmont's own stock.

Underwriting commissions and offering costs incurred in connection with all common equity offerings, including any potential issuances under Piedmont's ATM Program, are reflected as a reduction of additional paid-in capital.

Dividends

As a REIT, Piedmont is required by the Internal Revenue Code of 1986, as amended (the “Code”), to make distributions to stockholders each taxable year equal to at least 90% of its annual taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to stockholders (“REIT taxable income”). Historically, Piedmont sponsored a dividend reinvestment plan ("DRP") pursuant to which common stockholders could elect (if their brokerage agreements allowed) to reinvest an amount equal to the dividends declared on their common shares into additional shares of Piedmont’s common stock in lieu of receiving cash dividends. During the year ended December 31, 2020, the board of directors terminated the company-funded DRP offered through its transfer agent.

Noncontrolling Interest

Noncontrolling interest is the equity interest of consolidated entities that is not owned by Piedmont. Noncontrolling interest is adjusted for the noncontrolling partners' share of contributions, distributions, and earnings (losses) in accordance with the respective partnership agreement. Earnings allocated to such noncontrolling partners are recorded as income applicable to noncontrolling interest in the accompanying consolidated statements of income.

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Index to Financial Statements

Revenue Recognition

Piedmont's revenues consist of the following:

Rental and tenant reimbursement income - consists of revenue from leases with Piedmont's tenants, as well as reimbursements for services prescribed by such leases. Piedmont evaluates contracts at commencement to determine if the contract contains a lease. If a contract is determined to contain a lease, the lease is evaluated to determine whether it is an operating, sales-type, or a direct financing lease. All of Piedmont's leases where Piedmont is the lessor are for the lessee's use of space in Piedmont's commercial office properties and are classified as operating leases.

In most lease arrangements, Piedmont finances improvements to leased space and is deemed the owner of the tenant improvements. The determination of who owns the improvements, whether payments to tenants constitute lease incentives or tenant improvements, and the timing of revenue recognition requires the exercise of significant judgment based on the facts and circumstances of the specific lease arrangement and is not based on any one factor. When evaluating whether Piedmont or its tenant owns the improvements, management considers a number of factors, including, among other things:

•whether the tenant is obligated by the terms of the lease agreement to construct or install the leasehold improvements as a condition of the lease;

•whether the landlord can require the lessee to make specified improvements or otherwise enforce its economic rights to those assets;

•whether the tenant is required to provide the landlord with documentation supporting the cost of tenant improvements prior to reimbursement by the landlord;

•whether the landlord is obligated to fund cost overruns for the construction of leasehold improvements;

•whether the leasehold improvements are unique to the tenant or could reasonably be used by other parties; and

•whether the estimated economic life of the leasehold improvements is long enough to allow for a significant residual value that could benefit the landlord at the end of the lease term.

These tenant improvements are recorded as capital assets by Piedmont and depreciated, typically over the lease term. Payments made by the tenants for tenant improvements owned by Piedmont are treated as deferred revenues and amortized into rental and tenant reimbursement revenue over the lease term.

The timing of rental revenue recognition is largely dependent on our conclusion as to whether Piedmont, or its tenant, is the owner of tenant improvements at the leased property. When Piedmont owns the tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the finished space, which is typically when the improvements being recorded as Piedmont's asset are substantially complete. In some instances, Piedmont may cede control of the leased space to the tenant to be responsible for tenant-owned improvements for the space. In such arrangements, payments made by Piedmont to its tenant are treated as lease incentives, amortized as a reduction to rental and tenant reimbursement revenue over the lease term, which typically begins once the tenant takes possession of the unimproved space.

Lease payments are typically comprised of both fixed base rental payments and separately billed variable lease payments for reimbursement of services performed by Piedmont for the tenant as prescribed by the lease. Fixed base rental payments, as well as any fixed portion of reimbursement income, are recognized on a straight-line basis over the lease term. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred. Rents and tenant reimbursements collected in advance are recorded as deferred income in the accompanying consolidated balance sheets.

Property management fee revenue - consists of revenue earned by Piedmont related to operating and managing office properties owned by other third-parties. Such income is within the scope of ASC 606, Revenue from Contracts with Customers ("ASC 606"). Because property management services represent a performance obligation that are satisfied over the length of the contract, not at any specific point in time, and have the same measure of transfer (time elapsed), property management fee revenue is recognized over time. Any variable consideration transferred as part of these management agreements is recognized in the quarter that the underlying cash receipts are collected, consistent with the allocation objective of allocating the transaction price in an amount that depicts the amount of consideration to which Piedmont expects to be entitled in exchange for transferring the promised service to the customer.

Other property related income - consists of all other property related income from Piedmont's customers (tenants) that is not derived from a contract meeting the definition of a lease and is therefore also within the scope of ASC 606. Examples of such income include parking revenue and income from licenses with unrelated third-parties to place antennae and/or fiber optic cables in or on Piedmont's buildings. These services also represent a performance obligation that is satisfied over the length of

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Index to Financial Statements

the contract, not at any specific point in time, and has the same measure of transfer (time elapsed); therefore, revenue related to these licenses is also recognized over time.

Gains on the sale of real estate assets, like all non-lease related revenue, are subject to a five-step model requiring that Piedmont identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue upon satisfaction of the performance obligations. In circumstances where Piedmont contracts to sell a property with material post-sale involvement, such involvement must be accounted for as a separate performance obligation in the contract and a portion of the sales price allocated to each performance obligation. When the post-sale involvement performance obligation is satisfied, the portion of the sales price allocated to it will be recognized as gain on sale of real estate assets. Property dispositions with no continuing involvement will continue to be recognized upon closing of the sale. In circumstances where Piedmont extends seller financing as part of a sale of real estate assets, Piedmont assesses the collectibility of the notes receivable as of each reporting period end. Notes receivable that are deemed to be uncollectible or fully in default are reduced to their net realizable value, which approximates their fair value.

Stock-based Compensation

Piedmont has issued stock-based compensation in the form of restricted stock to its employees and directors. For employees, such compensation has been issued pursuant to Piedmont's Long-term Incentive Compensation ("LTIC") program. The LTIC program is comprised of an annual restricted stock grant component (the "Restricted Stock Award" program) and a multi-year performance share component (the "Performance Share" program). Awards granted pursuant to the Restricted Stock Award and Performance Share programs, as well as director's awards, are classified as equity awards or liability awards based on the underlying terms of the program agreement. Awards classified as equity awards are expensed straight-line over the vesting period, with issuances recorded as a reduction to additional paid in capital. Forfeitures are recorded when they occur. Awards classified as liability awards are remeasured at each reporting period over the service period, with issuances recorded as a reduction to accrued expense. The compensation expense recognized related to both of these award types is recorded as property operating costs for those employees whose job is related to property operations and as general and administrative expense for all other employees and directors in the accompanying consolidated statements of income.

Non-qualified Deferred Compensation Plan

Piedmont previously offered a non-qualified deferred compensation plan ("NQDC Plan") to certain employees which allowed the employee to elect to defer receipt of compensation, including both cash and stock-based compensation, until future taxable years. As of December 31, 2019, Piedmont suspended the NQDC Plan so that no additional amounts may be deferred. Amounts deferred prior to the suspension of the NQDC Plan are invested in trading securities held in a "rabbi trust" and are measured using quoted market prices as of the reporting date, with changes in fair value recognized in net income. As of December 31, 2020 and 2019, Piedmont held approximately $0.8 million and $0.6 million, respectively, of these trading securities. Such investments are included in cash equivalents due to their short-term, liquid nature, with the corresponding liability included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets.

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Index to Financial Statements

Net Income Available to Common Stockholders Per Share

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including the dilutive effect of nonvested restricted stock. The dilutive effect of nonvested restricted stock is calculated using the treasury stock method to determine the number of additional common shares that would become outstanding if the remaining unvested restricted stock awards vested. Further, Piedmont has elected to use the "end of the reporting period" convention when using the treasury stock method to calculate the dilutive effect of any shares issued pursuant to forward equity sale agreements in connection with Piedmont's ATM Program described above. Under this methodology, the assumed sale proceeds are calculated using the closing price of Piedmont's stock as of the end of the respective reporting period.

Income Taxes

Piedmont has elected to be taxed as a REIT under the Code, and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes, subject to fulfilling, among other things, its taxable income distribution requirement. However, Piedmont is subject to federal income taxes related to the operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements. Accordingly, the only provision for federal income taxes in the accompanying consolidated financial statements relates to POH. POH does not have significant tax provisions or deferred income tax items. These operations resulted in approximately $4,000, $160,000, and $(97,000) in income tax expense/(recoveries) for the years ended December 31, 2020, 2019, and 2018, respectively, as a component of other income/(expense) in the accompanying consolidated statements of income. Further, Piedmont is subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in general and administrative expenses in the accompanying consolidated financial statements.

Reclassifications

Certain prior period amounts presented in the accompanying consolidated balance sheets have been reclassified as of December 31, 2019 to conform to the current period financial statement presentation related to the 1901 Market Street building, which was classified as held for sale as of March 31, 2020, and sold on June 25, 2020. (see Note 13).

Accounting Pronouncements and Amendments Adopted during the year ended December 31, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the year ended December 31, 2020, Piedmont elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. Piedmont continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, Piedmont adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by ASC 842 Leases. As substantially all of Piedmont's receivables are operating lease receivables there was no

F-18

Index to Financial Statements

material impact to Piedmont's accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the year December 31, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. Piedmont has elected not to apply the relief provided by the FASB Staff, and has instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with Piedmont's tenants in Note 8 below.

3.    Acquisitions

During the year ended December 31, 2020, Piedmont acquired three properties and adjacent developable land (collectively the "Dallas Galleria Office Towers"), as well as the 222 South Orange Avenue building, using cash on hand and available funds from the $500 Million Unsecured 2018 Line of Credit, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Ownership Percentage Acquired	Rentable Square Feet	Percentage Leased as of Acquisition	Net Contractual Purchase Price (in millions)
Dallas Galleria Office Towers	Dallas, Texas	February 12, 2020	100%	1,435,466	95%	$396.2	(1)
222 South Orange Avenue	Orlando, Florida	October 29, 2020	100%	127,248	—%	$20.0	(2)

(1)Dallas Galleria Office Towers price includes the purchase of an adjacent parcel of approximately 1.9 acres of developable land.

(2)Piedmont allocated the purchase price amongst land of approximately $1.9 million and building of approximately $18.1 million.

The purchase price of the Dallas Galleria Office Towers and undeveloped land, inclusive of approximately $0.6 million of closing costs, was allocated as follows (in thousands):

	Dallas Galleria Office Towers and Undeveloped Land
Land	$	19,674
Building and improvements	293,760
Intangible lease assets (1)	49,177
Lease acquisition costs, net of tenant credits received from seller (1)	1,344
Intangible lease origination costs (1)	55,060
Intangible lease liabilities (1)	(22,169)
Total purchase price	$	396,846

(1)Amortization of in-place lease intangibles and lease acquisition costs are recognized using the straight-line method over approximately 5.2 years, the average remaining life of in-place leases.

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Index to Financial Statements

4.    Debt

During the year ended December 31, 2020, Piedmont issued, through Piedmont OP, $300 million in aggregate principal amount of 3.15% Senior Notes due 2030 (the “$300 Million Unsecured Senior Notes”), which mature on August 15, 2030. Upon issuance of the $300 Million Unsecured Senior Notes, Piedmont OP received proceeds of approximately $297.7 million, reflecting a discount of approximately $2.3 million which will be amortized as interest expense under the effective interest method over the ten-year term of the $300 Million Unsecured Senior Notes. In addition, in conjunction with the issuance, Piedmont settled four forward starting interest rate swaps, consisting of notional amounts of $200 million. These swaps were settled at a loss of approximately $19.9 million that was recorded as accumulated other comprehensive income and is being amortized as an increase in interest expense over the ten-year term of the $300 Million Unsecured Senior Notes. See Note 5 for further detail. The proceeds from the $300 Million Unsecured Senior Notes were used to fully repay the $300 Million Unsecured 2020 Term Loan that was obtained earlier during the year ended December 31, 2020 to provide interim financing for the purchase of the Dallas Galleria Office Towers.

Additionally, during the year ended December 31, 2020, Piedmont amended the $250 Million Unsecured 2018 Term Loan to reduce the applicable interest rate spread from LIBOR plus 160 basis points to LIBOR plus 95 basis points, based on Piedmont's current credit rating.

Interest on the $300 Million Unsecured Senior Notes is payable semi-annually in arrears on February 15 and August 15 of each year, beginning on February 15, 2021. The $300 Million Unsecured Senior Notes are fully and unconditionally guaranteed on a senior unsecured basis by Piedmont. Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, prior to May 15, 2030, at a redemption price equal to the greater of (i) 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed and (ii) a “make-whole” amount, plus any unpaid accrued interest. In addition, at any time on or after May 15, 2030, Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed plus unpaid accrued interest. The $300 Million Unsecured Senior Notes are subject to certain typical covenants that, subject to certain exceptions: (a) limit the ability of Piedmont and Piedmont OP to, among other things, incur additional secured and unsecured indebtedness; (b) limit the ability of Piedmont and Piedmont OP to merge, consolidate, sell, lease or otherwise dispose of their properties and assets substantially as an entirety; and (c) require Piedmont to maintain a pool of unencumbered assets. The $300 Million Unsecured Senior Notes are also subject to customary events of default which, if any of them occurs, would permit or require the principal of and accrued interest on the $300 Million Unsecured Senior Notes to become or to be declared due and payable.

Finally, during the year ended December 31, 2020, Piedmont sold the 1901 Market Street building for a substantial gain (see Note 13 for further details) and used the majority of the net sales proceeds to repay the $160 Million Fixed-Rate Loan that was secured by the property and all remaining outstanding borrowings under the $500 Million Unsecured 2018 Line of Credit. As a result of repaying the $160 Million Fixed-Rate Loan in advance of its stated maturity, Piedmont recognized a $9.3 million loss on early extinguishment of debt comprised of a prepayment penalty and the write-off of unamortized debt issuance costs and discounts associated with the loan.

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Index to Financial Statements

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of December 31, 2020 and 2019, including net discounts/premiums and unamortized debt issuance costs (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								2020		2019
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	27,610	$	28,687
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		—		160,000
Net premium and unamortized debt issuance costs								326		343
Subtotal/Weighted Average (5)	5.55	%						27,936		189,030
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan	LIBOR +  1.00%		1.16	%		11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		1.05	%		9/30/2022	(7)	5,000		—
$350 Million Unsecured Senior Notes	3.40	%	3.43	%		6/01/2023		350,000		350,000
$400 Million Unsecured Senior Notes	4.45	%	4.10	%		3/15/2024		400,000		400,000
$250 Million Unsecured 2018 Term Loan	LIBOR + 0.95%		2.08	%	(8)	3/31/2025		250,000		250,000
$300 Million Unsecured Senior Notes	3.15	%	3.90	%	(9)	8/15/2030		300,000		—
Discounts and unamortized debt issuance costs								(10,932)		(7,626)
Subtotal/Weighted Average (5)	2.98	%						1,594,068		1,292,374
Total/Weighted Average (5)	3.03	%						$	1,622,004	$	1,481,404

(1)Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of December 31, 2020 and 2019 is interest-only until maturity.

(2)Effective rate after consideration of settled or in-place interest rate swap agreements, issuance premiums/discounts, and/or fair market value adjustments upon assumption of debt.

(3)Collateralized by the 5 Wall Street building in Burlington, Massachusetts.

(4)Previously collateralized by the 1901 Market Street building in Philadelphia, Pennsylvania.

(5)Weighted average is based on contractual balance of outstanding debt and the stated or effectively fixed interest rates as of December 31, 2020.

(6)On a periodic basis, Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR

locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on

Piedmont’s current credit rating.

(7)Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided Piedmont is not then in default and upon payment of extension fees.

(8)The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan. For the remaining variable portion of the loan, Piedmont may periodically select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating. The rate presented is the weighted-average rate for the effectively fixed and variable portions of the debt outstanding as of December 31, 2020 (see Note 5 for more detail).

(9)The $300 Million Unsecured Senior Notes have a fixed coupon rate of 3.15%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.24%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.90%.

F-21

Index to Financial Statements

A summary of Piedmont's consolidated principal outstanding for aggregate debt maturities of its indebtedness as of December 31, 2020, is provided below (in thousands):

2021	$	327,610
2022	5,000
2023	350,000
2024	400,000
2025	250,000
Thereafter	300,000
Total	$	1,632,610

Piedmont’s weighted-average interest rate as of December 31, 2020 and 2019, for the aforementioned borrowings was approximately 3.03% and 3.76%, respectively. Piedmont made interest payments on all indebtedness, including interest rate swap cash settlements, of approximately $50.7 million, $64.0 million, and $63.1 million during the years ended December 31, 2020, 2019, and 2018, respectively. Also, Piedmont capitalized interest of approximately $1.0 million, $2.1 million, and $1.4 million for the years ended December 31, 2020, 2019, and 2018, respectively. As of December 31, 2020, Piedmont believes it was in compliance with all financial covenants associated with its debt instruments. See Note 6 for a description of Piedmont’s estimated fair value of debt as of December 31, 2020.

5.    Derivative Instruments

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future variable rate debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

Cash Flow Hedges of Interest Rate Risk

Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for Piedmont making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

During the year ended December 31, 2020, Piedmont entered into and subsequently settled four forward starting interest rate swap agreements with a total notional value of $200 million to hedge the risk of changes in the interest-related cash flows associated with the issuance of the $300 Million Unsecured Senior Notes (see Note 4). The settlement resulted in a loss of approximately $19.9 million, which was recorded as accumulated OCI and is being amortized as additional interest expense over the ten-year term of the $300 Million Unsecured Senior Notes.

During the year ended December 31, 2018, Piedmont repaid the $300 Million Unsecured 2013 Term Loan in advance of its maturity without penalty. In connection with this early debt prepayment, six interest rate swap agreements which were identified as cash flow hedges were also terminated, resulting in a receipt of approximately $0.8 million from Piedmont's counterparties for the settlement of the swaps. These proceeds were recorded in accumulated OCI and were amortized as an offset to interest expense in the consolidated statement of income over the original term of the terminated interest rate swaps through January 2019. In connection with this termination Piedmont also recognized a non-cash loss of approximately $1.3 million due to it becoming probable that the hedged forecasted transactions would not occur, offset by a mark-to-market gain on these cash flow hedges of approximately $0.1 million for the year ended December 31, 2018.

Finally, as of December 31, 2020, Piedmont was party to two other interest rate swap agreements, which are designated as effective cash flow hedges and hedge the variable cash flows covering $100 million of the $250 Million Unsecured 2018 Term Loan. The maximum length of time over which Piedmont is hedging its exposure to the variability in future cash flows related to these interest rate swap agreements is 51 months.

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Index to Financial Statements

A detail of Piedmont’s interest rate derivatives outstanding as of December 31, 2020 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025

Piedmont presents its interest rate derivatives on its consolidated balance sheets on a gross basis as interest rate swap assets and interest rate swap liabilities. A detail of Piedmont’s interest rate derivatives on a gross and net basis as of December 31, 2020 and 2019, respectively, is as follows (in thousands):

Interest rate swaps classified as:	December 31, 2020		December 31, 2019
Gross derivative assets	$	—	$	—
Gross derivative liabilities	(9,834)		(5,121)
Net derivative liability	$	(9,834)	$	(5,121)

The gain/(loss) on Piedmont's interest rate derivatives, including previously settled forward starting interest rate swaps, that was recorded in OCI and the accompanying consolidated statements of income as a component of interest expense for the years ended December 31, 2020, 2019, and 2018, respectively, was as follows (in thousands):

Interest Rate Swaps in Cash Flow Hedging Relationships:	2020		2019		2018
Amount of gain/(loss) recognized in OCI	$	(26,794)	$	(5,659)	$	692
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	$	(1,727)	$	1,836	$	1,558
Amount of loss recognized on derivatives reclassified from OCI into Loss on Extinguishment of Debt	$	—	$	—	$	(1,258)
Total amount of Interest Expense presented in the consolidated statements of income	$	(54,990)	$	(61,594)	$	(61,023)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income	$	(9,336)	$	—	$	(1,680)

Piedmont estimates that approximately $2.9 million will be reclassified from OCI as an increase to interest expense over the next twelve months. Piedmont did not recognize any hedge ineffectiveness on its cash flow hedges during the three years ended December 31, 2020.

See Note 6 for fair value disclosures of Piedmont's derivative instruments.

Credit-risk-related Contingent Features

Piedmont has agreements with its derivative counterparties that contain a provision whereby if Piedmont defaults on any of its indebtedness, including a default where repayment of the indebtedness has not been accelerated by the lender, then Piedmont could also be declared in default on its derivative obligations. If Piedmont were to breach any of the contractual provisions of the derivative contracts, it could be required to settle its liability obligations under the agreements at their termination value of the estimated fair values plus accrued interest, or approximately $10.1 million as of December 31, 2020. Additionally, Piedmont has rights of set-off under certain of its derivative agreements related to potential termination fees and amounts payable under the agreements, if a termination were to occur.

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Index to Financial Statements

6.    Fair Value Measurements of Financial Instruments

Piedmont considers its cash and cash equivalents, tenant receivables, notes receivable, restricted cash and escrows, accounts payable and accrued expenses, interest rate swap agreements, and debt to meet the definition of financial instruments. The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of December 31, 2020 and 2019, respectively (in thousands):

	December 31, 2020					December 31, 2019
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents (1)	$	7,331	$	7,331	Level 1	$	13,545	$	13,545	Level 1
Tenant receivables, net (1)	$	8,448	$	8,448	Level 1	$	8,226	$	8,226	Level 1
Notes receivable	$	118,500	$	118,500	Level 2	$	—	$	—	Level 1
Restricted cash and escrows (1)	$	1,883	$	1,883	Level 1	$	1,841	$	1,841	Level 1
Liabilities:
Accounts payable and accrued expenses (1)	$	45,345	$	45,345	Level 1	$	50,049	$	50,049	Level 1
Interest rate swaps	$	9,834	$	9,834	Level 2	$	5,121	$	5,121	Level 2
Debt, net	$	1,622,004	$	1,690,377	Level 2	$	1,481,404	$	1,536,687	Level 2

(1)For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to its short-term maturity.

Piedmont's notes receivable were carried at book value as of December 31, 2020, and were issued in conjunction with the sale of properties to an unrelated third-party buyer on October 28, 2020 (see Note 13). Piedmont has evaluated the facts and circumstances present at the time of issuance of the notes receivable as compared to those same circumstances as of December 31, 2020 and determined that the book value approximates its estimated fair value.

Piedmont's debt was carried at book value as of December 31, 2020 and 2019; however, Piedmont's estimate of its fair value is disclosed in the table above. Piedmont uses widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the debt facilities, including the period to maturity of each instrument, and uses observable market-based inputs for similar debt facilities which have transacted recently in the market. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). Scaling adjustments are made to these inputs to make them applicable to the remaining life of Piedmont's outstanding debt. Piedmont has not changed its valuation technique for estimating the fair value of its debt.

Piedmont’s interest rate swap agreements presented above, and as further discussed in Note 5, are classified as “Interest rate swap” liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of December 31, 2020 and 2019. The valuation of these derivative instruments was determined using widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the derivatives, including the period to maturity of each instrument, and uses observable market-based inputs, including interest rate curves and implied volatilities. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). In addition, Piedmont considered both its own and the respective counterparties’ risk of nonperformance in determining the estimated fair value of its derivative financial instruments by estimating the current and potential future exposure under the derivative financial instruments that both Piedmont and the counterparties were at risk for as of the valuation date. The credit risk of Piedmont and its counterparties was factored into the calculation of the estimated fair value of the interest rate swaps; however, as of December 31, 2020 and 2019, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs used to determine the estimated fair values of its derivative financial instruments are not significant to the fair value measurements in their entirety, and does not consider any of its derivative financial instruments to be Level 3 assets or liabilities.

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7.    Impairment Loss on Real Estate Assets

Piedmont recorded the following impairment losses on real estate assets for the years ended December 31, 2020, 2019, and 2018 (in thousands):

	2020		2019		2018
The Dupree(1)	$	—	$	1,953	$	—
600 Corporate Drive(2)	—		7,000		—
Total impairment loss on real estate assets	$	—	$	8,953	$	—

(1)The impairment loss recognized was the result of reducing the asset's carrying value to reflect its fair value, estimated based on the net contract price negotiated with a unrelated, third-party purchaser.

(2)Management shortened the intended hold period for the property, and in doing so determined that the carrying value would not be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. As a result, Piedmont recognized a loss on impairment calculated as the difference between the carrying value of the asset and the estimated fair value less costs to sell. The estimated fair value was determined using widely available market quotations for similar properties, as well as discounted cash flow analysis. Key assumptions used in the analysis were a capitalization and discount rate of 14% and estimated selling costs of 0.75%.

8.    Commitments and Contingencies

Commitments Under Existing Lease Agreements

As a recurring part of its business, Piedmont is typically required under its executed lease agreements to fund tenant improvements, leasing commissions, and building improvements. In addition, certain agreements contain provisions that require Piedmont to issue corporate or property guarantees to provide funding for capital improvements or other financial obligations. As of December 31, 2020, Piedmont had one individually significant unrecorded tenant allowance commitment of approximately $38.2 million for the approximately 20-year, approximately 520,000 square foot renewal and expansion on behalf of Piedmont's largest tenant, the State of New York at the 60 Broad Street building in New York City. This commitment will be capitalized as the related expenditures are incurred.

Contingencies Related to Tenant Audits/Disputes

Certain lease agreements include provisions that grant tenants the right to engage independent auditors to audit their annual operating expense reconciliations. Such audits may result in different interpretations of language in the lease agreements from that made by Piedmont, which could result in requests for refunds of previously recognized tenant reimbursement revenues, resulting in financial loss to Piedmont. There were no reductions in rental and reimbursement revenues related to such tenant audits/disputes during the year ended December 31, 2020. However, Piedmont recorded net recoveries of previously recognized reductions in rental and reimbursement revenues of $0.6 million related to tenant audits/disputes during the year ended December 31, 2019, and approximately $0.5 million of reductions in rental and reimbursement revenues related to such tenant audits/disputes during the years ended December 31, 2018.

Contingencies Related to the COVID-19 Pandemic

During the year ended December 31, 2020, Piedmont continued to experience the repercussions of the COVID-19 pandemic including forced closures and other restrictions that have had a material adverse effect on the global economy and the regional U.S. economies in which Piedmont operates. Specifically, the pandemic and its impact on the U.S., as well as the global economy, has negatively impacted the trading price of Piedmont's common stock and some of Piedmont's tenants' ability to pay their rent. We have entered into approximately 70 agreements with various tenants that primarily deferred approximately $7.1 million of 2020 rent payments into fourth quarter of 2020 or the year ending December 31, 2021. Piedmont has already collected approximately $1.3 million of the $7.1 million deferred. Nonetheless, Piedmont has established an approximately $4.6 million general reserve for potential collectibility issues. There can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due.

Piedmont’s financial statements as of and for the year ended December 31, 2020 have been prepared in light of these circumstances. Piedmont has continued to follow the policies described in Note 2 above, including those related to impairment of real estate assets and goodwill and estimates of the likelihood of collectibility of amounts due from tenants.

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While the long-term impacts of the COVID-19 pandemic remain unknown, a prolonged economic downturn or recession resulting from the pandemic could adversely affect many of Piedmont's tenants which could, in turn, adversely impact Piedmont's business, financial condition and results of operations. Piedmont will continue to work closely with its tenants and address their concerns on a case-by-case basis, seeking solutions that address immediate cash flow interruptions while maintaining long term lease obligations.

Litigation

Piedmont is from time to time a party to legal proceedings, which arise in the ordinary course of its business. None of these ordinary course legal proceedings are reasonably likely to have a material adverse effect on results of operations or financial condition. Piedmont is not aware of any such legal proceedings contemplated by governmental authorities.

9.    Related-Party Transactions

During the year ended December 31, 2019, Piedmont entered into employment or retirement agreements with certain of its current and former executive officers as more fully described in its Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019. Further, during the years ended December 31, 2020, 2019, and 2018, Piedmont recognized approximately $0.1 million, $0.2 million, and $0.3 million, respectively, of expense related to a consulting agreement with its former Chief Investment Officer. There were no other related-party transactions during the three years ended December 31, 2020.

10.    Stock Based Compensation

Deferred Stock Awards

The Compensation Committee of Piedmont's Board of Directors has periodically granted deferred stock award units to all of Piedmont's employees and independent directors. Most employee awards are time-vested and typically vest ratably over a multi-year period and independent director awards vest over one year.

Certain management employees' long-term equity incentive program is split equally between the time-vested award units and a multi-year performance share program whereby the actual awards are contingent upon Piedmont's total stockholder return ("TSR") relative to a peer group of office REITs' TSR. The long-term equity incentives for these certain employees, as well as the peer group, is predetermined by the Board of Directors, advised by an outside compensation consultant. Any shares earned are awarded at the end of the multi-year performance period and vest upon award. The fair values of the multi-year performance share awards are estimated using a Monte Carlo valuation method.

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A rollforward of Piedmont's equity based award activity for the year ended December 31, 2020 is as follows:

	Shares	Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2019	1,045,020	$	25.15
Deferred Stock Awards Granted	242,586	$	22.39
Increase in Estimated Potential Share Awards based on TSR Performance	111,545	$	26.97
Performance Stock Awards Vested	(153,368)	$	30.45
Deferred Stock Awards Vested	(229,274)	$	21.05
Deferred Stock Awards Forfeited	(6,979)	$	21.82
Unvested and Potential Stock Awards as of December 31, 2020	1,009,530	$	24.37

The following table provides additional information regarding stock award activity during the years ended 2020, 2019, and 2018 (in thousands except for per share amounts):

	2020		2019		2018
Weighted-Average Grant Date Fair Value of Deferred Stock Granted During the Period	$	22.39	$	21.02	$	17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	4,826	$	8,658	$	6,378
Share-based Liability Awards Paid During the Period (1)	$	4,116	$	6,683	$	2,947

(1)Amounts reflect the issuance of performance share awards related to the 2017-19, 2016-18, and 2015-17 Performance Share Plans during the years ended December 31, 2020, 2019, and 2018 respectively, as well as performance share award liabilities settled in cash in July 2019 for retirement and separation associated with the senior management transition on June 30, 2019.

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A detail of Piedmont’s outstanding employee restricted stock awards as of December 31, 2020 is as follows:

Date of grant	Type of Award	Net  Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested and Potential Shares as of December 31, 2020
May 17, 2018	Deferred Stock Award	250,627	$	17.84	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 17, 2019, 2020, and 2021, respectively.	52,740
May 17, 2018	Fiscal Year 2018-2020 Performance Share Program	—	$	23.52	Shares awarded, if any, will vest immediately upon determination of award in 2021.	200,674	(2)
May 3, 2019	Deferred Stock Award	274,904	$	21.04	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 3, 2020, 2021, and 2022, respectively.	133,900
May 3, 2019	Fiscal Year 2019-2021 Performance Share Program	—	$	29.43	Shares awarded, if any, will vest immediately upon determination of award in 2022.	224,900	(2)
February 19, 2020	Deferred Stock Award	178,181	$	24.41	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on February 19, 2021, 2022, and 2023, respectively.	143,605
March 19, 2020	Fiscal Year 2020-2022 Performance Share Program	—	$	25.83	Shares awarded, if any, will vest immediately upon determination of award in 2023.	207,931	(2)
May 13, 2020	Deferred Stock Award-Board of Directors	45,780	$	13.76	Of the shares granted, 100% will vest by May 13, 2021.	45,780
Total						1,009,530

(1)Amounts reflect the total grant to employees and independent directors, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through December 31, 2020.

(2)Estimated based on Piedmont's cumulative TSR for the respective performance period through December 31, 2020. Share estimates are subject to change in future periods based upon Piedmont's relative performance compared to its peer group of office REITs' TSR.

During the years ended December 31, 2020, 2019, and 2018, Piedmont recognized approximately $9.7 million, $15.1 million and $9.7 million of compensation expense related to stock awards, of which approximately $8.5 million, $13.6 million and $8.6 million, related to the amortization of unvested shares, respectively. During the year ended December 31, 2020, a total of 245,875 shares were issued to employees, net of shares surrendered for income tax obligations. As of December 31, 2020, approximately $6.1 million of unrecognized compensation cost related to unvested, annual restricted stock awards remained, which Piedmont will record in its consolidated statements of income over a weighted-average vesting period of approximately one year.

11.    Earnings Per Share

There are no adjustments to “Net income applicable to Piedmont” for the diluted earnings per share computations.

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including unvested restricted stock awards. Diluted weighted average number of common shares reflects the potential dilution

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under the treasury stock method that would occur if the remaining unvested restricted stock awards vested and resulted in additional common shares outstanding. Unvested restricted stock awards which are determined to be anti-dilutive are not included in the calculation of diluted weighted average common shares. For each of the years ended December 31, 2020, 2019, and 2018, Piedmont excluded approximately 289,681, 156,317, and 170,128 of such anti-dilutive shares, respectively.

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively (in thousands):

	2020	2019	2018
Weighted-average common shares—basic	125,730	125,709	130,161
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	374	473	475
Weighted-average common shares—diluted	126,104	126,182	130,636

12.    Operating Leases

Piedmont’s real estate assets are leased to tenants under operating leases for which the terms vary, including certain provisions to extend the lease term, options for early terminations subject to specified penalties, and other terms and conditions as negotiated. Piedmont retains substantially all of the risks and benefits of ownership of the real estate assets leased to tenants. Amounts required as security deposits vary depending upon the terms of the respective leases and the creditworthiness of the tenant; however, generally they are not significant. Exposure to credit risk is limited to the extent that tenant receivables exceed this amount. Security deposits liabilities related to tenant leases are included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets.

The future minimum rental income from Piedmont’s investment in real estate assets under non-cancelable operating leases as of December 31, 2020 is presented below (in thousands):

Years ending December 31:
2021	$	378,807
2022	367,261
2023	331,195
2024	290,377
2025	244,376
Thereafter	1,134,705
Total	$	2,746,721

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively, as follows (in thousands):

	2020		2019		2018
Fixed payments	$	433,841	$	418,245	$	411,667
Variable payments	86,112		93,660		92,743
Total Rental and Tenant Reimbursement Revenue	$	519,953	$	511,905	$	504,410

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. For both the years ended December 31, 2020 and December 31, 2019, Piedmont's right to use asset and corresponding lease liability is approximately $0.2 million, using Piedmont's incremental borrowing rate as the lease discount rate. For both the years ended December 31, 2020 and December 31, 2019, Piedmont recognized approximately $0.1 million of operating lease costs. As of December 31, 2020, the weighted-average lease term of Piedmont's right of use assets is 2 years, and the weighted-average discount rate is 1.60%.

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13.    Property Dispositions and Assets Held for Sale

Property Dispositions

None of Piedmont's property dispositions during the three years ended December 31, 2020 met the criteria to be reported as discontinued operations. The operational results and gain on sale of real estate assets are presented as continuing operations in the accompanying consolidated statements of income, unless otherwise indicated below. Details of such properties sold are presented below (in thousands):

Buildings Sold	Location	Date of Sale	Gain on Sale of Real Estate Assets			Net Sales Proceeds
2017 Disposition Portfolio	Various(1)	January 4, 2018	$	45,275		$	419,644	(2)
800 North Brand Boulevard	Glendale, California	November 29, 2018	$	30,416		$	155,583
One Independence Square	Washington, D.C.	February 28, 2019	$	33,176		$	163,623
The Dupree	Atlanta, Georgia	September 4, 2019	$	—	(3)	$	12,631
500 West Monroe Street	Chicago, Illinois	October 28, 2019	$	157,739		$	408,851
1901 Market Street	Philadelphia, Pennsylvania	June 25, 2020	$	191,030		$	350,805
New Jersey Portfolio	Various(4)	October 28, 2020	$	14,636		$	9,289	(5)

(1)The 2017 Disposition Portfolio is comprised of the following properties: Desert Canyon 300 in Phoenix, Arizona; Windy Point I & II in Schaumburg, Illinois; 2300 Cabot Drive in Lisle, Illinois; 1075 West Entrance Drive in Auburn Hills, Michigan; Auburn Hills Corporate Center in Auburn Hills, Michigan; 5301 Maryland Way in Brentwood, Tennessee; Suwanee Gateway One in Suwanee, Georgia; 5601 Hiatus Road in Tamarac, Florida; Piedmont Pointe I & II in Bethesda, Maryland; 1200 Crown Colony Drive in Quincy, Massachusetts; 2001 N.W. 64th Street in Fort Lauderdale, Florida, and 2120 West End Avenue in Nashville, Tennessee.

(2)Piedmont accepted a secured $3.2 million promissory note from the buyer for a portion of the sales price, which was subsequently paid in full by the borrower.

(3)As discussed in Note 7 above, Piedmont recognized an impairment loss prior to the sale of the property.

(4)The New Jersey Portfolio is comprised of the following three properties: 200 Bridgewater Crossing in Bridgewater, New Jersey; 400 Bridgewater Crossing in Bridgewater, New Jersey; and 600 Corporate Drive in Lebanon, New Jersey.

(5)Piedmont accepted a secured $102.8 million promissory note from the buyer, which matures on October 31, 2023 and bears interest at 6% per annum. The note may not be prepaid without penalty until January 2022, and may be extended for three available one-year periods upon payment of applicable extension fees. Further, Piedmont also accepted a mezzanine note for $15.7 million, bearing interest at 13.55% per annum, which may be repaid any time before the October 31, 2023 maturity without penalty.

Assets Held for Sale

As of December 31, 2020, no properties met the criteria for held for sale classification; however, as of March 31, 2020, the 1901 Market Street building in Philadelphia, Pennsylvania, which sold June 2020, met the criteria for held for sale classification. Consequently its assets and liabilities as of December 31, 2019 were presented as held for sale for comparability in the accompanying consolidated balance sheets.

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Details of amounts held for sale as of December 31, 2020 and 2019 are presented below (in thousands):

	December 31, 2020		December 31, 2019
Real estate assets held for sale, net:
Land	$	—	$	20,829
Building and improvements, less accumulated depreciation of $0 and $66,823 as of December 31, 2020, and 2019, respectively	—		112,287
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of December 31, 2020 and 2019, respectively	—		6,574
Total real estate assets held for sale, net	$	—	$	139,690
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of December 31, 2020 and 2019, respectively	—		9,425
Total other assets held for sale, net	$	—	$	28,201
Other liabilities held for sale, net:
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of December 31, 2020 and 2019, respectively	$	—	$	7,657

14.    Supplemental Disclosures for the Statement of Consolidated Cash Flows

Certain noncash investing and financing activities for the years ended December 31, 2020, 2019, and 2018 (in thousands) are outlined below:

	2020		2019		2018
Accrued capital expenditures and deferred lease costs	$	20,103	$	38,366	$	10,854
Change in accrued dividends and discount on dividend reinvestments	$	(744)	$	(545)	$	(74,828)
Change in accrued share repurchases as part of an announced plan	$	685	$	(4,417)	$	3,140
Notes receivable issued in conjunction with property dispositions	$	118,500	$	—	$	—

The following table provides a reconciliation of cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statement of cash flows for the years ended December 31, 2020, 2019, and 2018 to the consolidated balance sheets for the respective period (in thousands):

	2020		2019		2018
Cash and cash equivalents, beginning of period	$	13,545	$	4,571	$	7,382
Restricted cash and escrows, beginning of period	1,841		1,463		1,373
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows, beginning of period	$	15,386	$	6,034	$	8,755
Cash and cash equivalents, end of period	$	7,331	$	13,545	$	4,571
Restricted cash and escrows, end of period	1,883		1,841		1,463
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows, end of period	$	9,214	$	15,386	$	6,034

Amounts in restricted cash and escrows typically represent escrow accounts for the payment of real estate taxes which are required under certain of Piedmont's debt agreements; earnest money deposited by a buyer to secure the purchase of one of our properties; or security or utility deposits held for tenants as a condition of their lease agreement.

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15.    Income Taxes

Piedmont’s income tax basis net income for the years ended December 31, 2020, 2019, and 2018, is calculated as follows (in thousands):

	2020		2019		2018
GAAP basis financial statement net income	$	232,688	$	229,261	$	130,296
Increase/(decrease) in net income resulting from:
Depreciation and amortization expense recognized for financial reporting purposes in excess of amounts recognized for income tax purposes	73,784		10,381		54,420
Rental income accrued for income tax purposes less than amounts for financial reporting purposes	(25,726)		(34,804)		(9,681)
Net amortization of above/below-market lease intangibles for income tax purposes in excess of amounts for financial reporting purposes	(11,625)		(7,698)		(7,453)
Gain on disposal of property for financial reporting purposes less than/(in excess of) amounts for income tax purposes	(222,037)		(85,463)		(36,241)
Taxable income or loss of Piedmont Washington Properties, Inc., in excess of/(less than) amount for financial reporting purposes	1,345		411		(2,089)
Other expenses, including impairment loss on real estate assets, for financial reporting purposes in excess of/ (less than) amounts for income tax purposes	10,970		23,127		(37,394)
Taxable income for POH in excess of/(less than) amount for financial reporting purposes	1,499		175		(64)
Income tax basis net income, prior to dividends paid deduction	$	60,898	$	135,390	$	91,794

For income tax purposes, dividends to common stockholders are characterized as ordinary income, capital gains, or as a return of a stockholder’s invested capital. The composition of Piedmont’s distributions per common share is presented below:

	2020		2019		2018
Ordinary income	91.91	%	29.82	%	100.00	%
Return of capital	8.09	%	—	%	—	%
Capital gains	—	%	70.18	%	—	%
	100	%	100	%	100	%

Piedmont has $0 and approximately $1.0 million of uncertain tax positions included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets as of December 31, 2020 and 2019, respectively. Piedmont recognized approximately $1.0 million of recoveries of previously recorded estimated accrued interest and penalties for the year ended December 31, 2020, and approximately $1.4 million of such recoveries for both the years ended December 31, 2019 and 2018. The tax years 2017 to 2019 remain open to examination by various federal and state taxing authorities.

16.    Quarterly Results (unaudited)

A summary of the unaudited quarterly financial information for the years ended December 31, 2020 and 2019, is presented below (in thousands, except per-share data):

	2020
	First		Second		Third		Fourth
Revenues	$	137,171	$	134,631	$	131,693	$	131,529
Gain/(loss) on sale of real estate assets	$	3	$	191,369	$	(340)	$	14,634
Net income	$	8,711	$	192,426	$	8,940	$	22,608
Net income applicable to Piedmont	$	8,709	$	192,427	$	8,943	$	22,609
Basic earnings per share	$	0.07	$	1.53	$	0.07	$	0.18
Diluted earnings per share	$	0.07	$	1.52	$	0.07	$	0.18
Dividends declared per share	$	0.21	$	0.21	$	0.21	$	0.21

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	2019
	First		Second		Third		Fourth
Revenues	$	132,936	$	130,668	$	135,421	$	134,153
Gain on sale of real estate assets	$	37,887	$	1,451	$	32	$	157,640
Net income	$	50,209	$	8,152	$	8,419	$	162,476
Net income applicable to Piedmont	$	50,208	$	8,153	$	8,422	$	162,478
Basic and diluted earnings per share	$	0.40	$	0.06	$	0.07	$	1.29
Dividends declared per share	$	0.21	$	0.21	$	0.21	$	0.21

17.    Segment Information

Piedmont’s accelerated disposition program has narrowed the geographic footprint of the portfolio, with a concentration on Sunbelt properties. During the year ended December 31, 2020, Piedmont disposed of its only asset in Philadelphia, Pennsylvania and its remaining assets in New Jersey (see Note 13). As a result of this concentration of Piedmont's portfolio, the chief operating decision maker ("CODM"), who is Piedmont's President and Chief Executive Officer, began to evaluate Piedmont's portfolio and assess the ongoing operations and performance of its properties utilizing the following geographic segments: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York. These operating segments are also Piedmont’s reportable segments. Additionally, as of December 31, 2020, Piedmont owns two properties in Houston and one property in Chicago that do not meet the definition of an operating or reportable segment as the CODM does not regularly review these properties for purposes of allocating resources or assessing performance, and Piedmont does not maintain a significant presence or anticipate further investment in these markets. These three properties are included in "Corporate and other" below. During the periods presented, there have been no material intersegment transactions. The accounting policies of the reportable segments are the same as Piedmont.

NOI by geographic segment is the primary performance measure reviewed by the CODM to assess operating performance and is calculated by deducting operating expenses from revenues. Revenues include lease revenues and other property income; and operating expenses include property operating costs. The NOI consists only of revenues and expenses directly related to real estate rental operations. NOI reflects property acquisitions and dispositions, occupancy levels, rental rate increases or decreases, and the recoverability of operating expenses. NOI, as Piedmont calculates it, may not be directly comparable to similarly titled, but differently calculated, measures for other REITs.

Asset value information and capital expenditures by segment are not reported because the CODM does not use these measures to assess performance.

The following table presents revenues included in NOI by geographic reportable segments (in thousands):

	Years Ended December 31,
	2020		2019		2018
Dallas	$	101,727	$	55,346	$	54,382
Atlanta	95,403		75,699		62,282
Washington, D.C.	59,760		64,481		68,404
Minneapolis	61,465		64,318		57,711
Boston	61,338		64,739		54,648
Orlando	54,886		57,084		55,440
New York	69,827		75,587		71,733
Total reportable segments	504,406		457,254		424,600
Corporate and other	30,618		75,924		101,367
Total Revenues	$	535,024	$	533,178	$	525,967

F-33

Index to Financial Statements

The following table presents NOI by geographic reportable segments (in thousands):

	Years Ended December 31,
	2020		2019		2018
Dallas	$	59,845	$	29,438	$	29,286
Atlanta	60,276		47,287		38,660
Washington, D.C.	36,696		41,167		41,565
Minneapolis	33,588		35,610		30,402
Boston	41,722		44,016		37,887
Orlando	34,427		35,433		35,067
New York	38,990		44,036		40,622
Total reportable segments	305,544		276,987		253,489
Corporate and other	13,915		43,637		63,649
Total NOI	$	319,459	$	320,624	$	317,138

A reconciliation of Net income applicable to Piedmont to NOI is presented below (in thousands):

	Years Ended December 31,
	2020		2019		2018
Net income applicable to Piedmont	$	232,688	$	229,261	$	130,296
Management fee revenue (1)	(1,495)		(2,518)		(712)
Depreciation and amortization	203,869		182,682		171,252
Impairment loss on real estate assets	—		8,953		—
General and administrative expenses	27,464		37,895		29,713
Interest expense	54,990		61,594		61,023
Other income	(1,724)		(228)		(418)
Loss on extinguishment of debt	9,336		—		1,680
Gain on sale of real estate assets	(205,666)		(197,010)		(75,691)
Net loss applicable to noncontrolling interests	(3)		(5)		(5)
NOI	$	319,459	$	320,624	$	317,138

(1)Presented net of related operating expenses incurred to earn such management fee revenue. Such operating expenses are a component of property operating costs in the accompanying consolidated statements of income.

18.    Subsequent Events

Declaration of Dividend for the First Quarter 2021

On February 2, 2021, the board of directors declared a dividend for the first quarter 2021 in the amount of $0.21 per share on its common stock to stockholders of record as of the close of business on February 26, 2021, payable on March 19, 2021.

F-34

Index to Financial Statements

Piedmont Office Realty Trust, Inc.

Schedule III - Real Estate and Accumulated Depreciation

December 31, 2020

(dollars in thousands)

					Initial Cost to Piedmont				Gross Amount of Which Carried at December 31, 2020
Description(1)	Location	Ownership Percentage		Encumbrances	Land	Buildings and Improvements	Total(2)	Costs Capitalized Subsequent to Acquisition(3)	Land	Buildings and Improvements	Total(4)	Accumulated Depreciation and Amortization	Date of Construction	Date Acquired	Life on which Depreciation and Amortization in Latest Statements of Comprehensive Income is Computed  (in years)(5)
1430 ENCLAVE PARKWAY	Houston, TX	100	%	None	7,100	37,915	45,015	6,473	5,506	45,982	51,488	21,321	1994	12/21/2000	0	-	40
CRESCENT RIDGE II	Minnetonka, MN	100	%	None	7,700	45,154	52,854	12,363	8,021	57,196	65,217	28,532	2000	12/21/2000	0	-	40
90 CENTRAL STREET	Boxborough, MA	100	%	None	3,642	29,497	33,139	2,794	3,642	32,291	35,933	14,670	2001	5/3/2002	0	-	40
6031 CONNECTION DRIVE	Irving, TX	100	%	None	3,157	43,656	46,813	8,454	3,157	52,110	55,267	22,979	1999	8/15/2002	0	-	40
6021 CONNECTION DRIVE	Irving, TX	100	%	None	3,157	42,662	45,819	11,562	3,157	54,224	57,381	25,875	2000	8/15/2002	0	-	40
6011 CONNECTION DRIVE	Irving, TX	100	%	None	3,157	29,034	32,191	18,524	3,157	47,558	50,715	15,583	1999	8/15/2002	0	-	40
US BANCORP CENTER	Minneapolis, MN	100	%	None	11,138	175,629	186,767	31,142	11,138	206,771	217,909	91,546	2000	5/1/2003	0	-	40
GLENRIDGE HIGHLANDS TWO	Atlanta, GA	100	%	None	6,662	69,031	75,693	(15,253)	6,662	53,778	60,440	26,802	2000	8/1/2003	0	-	40
400 VIRGINIA AVE	Washington, DC	100	%	None	22,146	49,740	71,886	2,375	22,146	52,115	74,261	21,865	1985	11/19/2003	0	-	40
4250 NORTH FAIRFAX DRIVE	Arlington, VA	100	%	None	13,636	70,918	84,554	16,725	13,636	87,643	101,279	36,852	1998	11/19/2003	0	-	40
1225 EYE STREET	Washington, DC	98.1	%	None	21,959	47,602	69,561	9,758	21,959	57,360	79,319	25,963	1986	11/19/2003	0	-	40
1201 EYE STREET	Washington, DC	98.6	%	None	31,985	63,139	95,124	9,768	31,985	72,907	104,892	29,381	2001	11/19/2003	0	-	40
60 BROAD STREET	New York, NY	100	%	None	32,522	168,986	201,508	43,190	60,708	183,990	244,698	62,826	1962	12/31/2003	0	-	40
1414 MASSACHUSETTS AVENUE	Cambridge, MA	100	%	None	4,210	35,821	40,031	(8,031)	4,365	27,635	32,000	11,819	1873	1/8/2004	0	-	40
ONE BRATTLE SQUARE	Cambridge, MA	100	%	None	6,974	64,940	71,914	(23,111)	7,113	41,690	48,803	18,286	1991	2/26/2004	0	-	40
3100 CLARENDON BOULEVARD	Arlington, VA	100	%	None	11,700	69,705	81,405	48,835	11,791	118,449	130,240	38,772	1987	12/9/2004	0	-	40
LAS COLINAS CORPORATE CENTER I	Irving, TX	100	%	None	3,912	18,830	22,742	(3,316)	2,543	16,883	19,426	6,775	1998	8/31/2006	0	-	40
LAS COLINAS CORPORATE CENTER II	Irving, TX	100	%	None	4,496	29,881	34,377	(2,047)	2,543	29,787	32,330	12,272	1998	8/31/2006	0	-	40

S-1

Index to Financial Statements

					Initial Cost				Gross Amount of Which Carried at December 31, 2020
Description(1)	Location	Ownership Percentage		Encumbrances	Land	Buildings and Improvements	Total(2)	Costs Capitalized Subsequent to Acquisition(3)	Land	Buildings and Improvements	Total(4)	Accumulated Depreciation and Amortization	Date of Construction	Date Acquired	Life on which Depreciation and Amortization in Latest Statements of Comprehensive Income is Computed  (in years)(5)
TWO PIERCE PLACE	Itasca, IL	100	%	None	4,370	70,632	75,002	12,528	8,156	79,374	87,530	25,018	1991	12/7/2006	0	-	40
ONE MERIDIAN CROSSINGS	Richfield, MN	100	%	None	2,919	24,398	27,317	621	2,919	25,019	27,938	7,170	1997	10/1/2010	0	-	40
TWO MERIDIAN CROSSINGS	Richfield, MN	100	%	None	2,661	25,742	28,403	839	2,661	26,581	29,242	7,636	1998	10/1/2010	0	-	40
THE MEDICI	Atlanta, GA	100	%	None	1,780	11,510	13,290	5,632	1,780	17,142	18,922	6,325	2008	6/7/2011	0	-	40
225 PRESIDENTIAL WAY	Boston, MA	100	%	None	3,626	36,916	40,542	(5,419)	3,612	31,511	35,123	7,363	2001	9/13/2011	0	-	40
235 PRESIDENTIAL WAY	Boston, MA	100	%	None	4,154	44,048	48,202	(6,851)	4,138	37,213	41,351	8,659	2000	9/13/2011	0	-	40
400 TOWNPARK	Lake Mary, FL	100	%	None	2,570	20,555	23,125	5,634	2,570	26,189	28,759	8,063	2008	11/10/2011	0	-	40
ARLINGTON GATEWAY	Arlington, VA	100	%	None	36,930	129,070	166,000	917	36,930	129,987	166,917	27,497	2005	3/4/2013	0	-	40
5 & 15 WAYSIDE ROAD	Burlington, MA	100	%	None	7,190	55,445	62,635	6,463	7,190	61,908	69,098	14,471	1999 / 2001	3/22/2013	0	-	40
6565 MACARTHUR BOULEVARD	Irving, TX	100	%	None	4,820	37,767	42,587	726	4,820	38,493	43,313	8,203	1998	12/5/2013	0	-	40
ONE LINCOLN PARK	Dallas, TX	100	%	None	6,640	44,810	51,450	2,469	6,640	47,279	53,919	10,939	1999	12/20/2013	0	-	40
161 CORPORATE CENTER	Irving, TX	100	%	None	2,020	10,680	12,700	(467)	2,020	10,213	12,233	2,786	1998	12/30/2013	0	-	40
5 WALL STREET	Burlington, MA	100	%	27,610	9,560	50,276	59,836	(2,212)	9,560	48,064	57,624	8,813	2008	6/27/2014	0	-	40
1155 PERIMETER CENTER WEST	Atlanta, GA	100	%	None	5,870	66,849	72,719	5,879	5,870	72,728	78,598	12,934	2000	8/28/2014	0	-	40
500 TOWNPARK	Lake Mary, FL	100	%	None	2,147	21,925	24,072	4,092	2,147	26,017	28,164	3,522	2016	N/A	0	-	40
PARK PLACE ON TURTLE CREEK	Dallas, TX	100	%	None	4,470	38,048	42,518	4,117	4,470	42,165	46,635	7,564	1986	1/16/2015	0	-	40
80 CENTRAL STREET	Boxborough, MA	100	%	None	1,980	8,930	10,910	3,731	1,980	12,661	14,641	2,050	1988	7/24/2015	0	-	40
ENCLAVE PLACE	Houston, TX	100	%	None	1,890	60,094	61,984	35,319	1,890	95,413	97,303	10,591	2015	N/A	0	-	40
200 SOUTH ORANGE AVENUE	Orlando, FL	100	%	None	11,660	139,015	150,675	20,653	11,660	159,668	171,328	22,127	1988	11/4/2015	0	-	40
GALLERIA 300	Atlanta, GA	100	%	None	4,000	73,554	77,554	6,799	4,000	80,353	84,353	14,130	1987	11/4/2015	0	-	40

S-2

Index to Financial Statements

					Initial Cost								Gross Amount of Which Carried at December 31, 2020
Description(1)	Location	Ownership Percentage		Encumbrances	Land		Buildings and Improvements		Total(2)		Costs Capitalized Subsequent to Acquisition(3)		Land		Buildings and Improvements		Total(4)		Accumulated Depreciation and Amortization		Date of Construction	Date Acquired	Life on which Depreciation and Amortization in Latest Statements of Comprehensive Income is Computed  (in years)(5)
GLENRIDGE HIGHLANDS ONE	Atlanta, GA	100	%	None	5,960		50,013		55,973		3,381		5,960		53,394		59,354		8,796		1998	11/24/2015	0	-	40
CNL CENTER I	Orlando, FL	99	%	None	6,470		77,858		84,328		(20)		6,470		77,838		84,308		11,639		1999	8/1/2016	0	-	40
CNL CENTER II	Orlando, FL	99	%	None	4,550		55,609		60,159		862		4,550		56,471		61,021		9,869		2006	8/1/2016	0	-	40
ONE WAYSIDE ROAD	Boston, MA	100	%	None	6,240		57,124		63,364		(4,471)		6,240		52,653		58,893		6,455		1997 / 2008	8/10/2016	0	-	40
GALLERIA 200	Atlanta, GA	100	%	None	6,470		55,825		62,295		9,738		6,470		65,563		72,033		8,642		1984	10/7/2016	0	-	40
750 WEST JOHN CARPENTER FREEWAY	Irving, TX	100	%	None	7,860		36,303		44,163		2,914		7,860		39,217		47,077		8,445		1999	11/30/2016	0	-	40
NORMAN POINTE I	Bloomington, MN	100	%	None	4,358		22,322		26,680		3,917		4,360		26,237		30,597		3,384		2000	12/28/2017	0	-	40
501 WEST CHURCH STREET	Orlando, FL	100	%	None	2,805		28,119		30,924		—		2,805		28,119		30,924		3,396		2003	2/23/2018	0	-	40
9320 EXCELSIOR BOULEVARD	Hopkins, MN	100	%	None	3,760		35,289		39,049		(553)		3,707		34,789		38,496		4,531		2010	10/25/2018	0	-	40
25 BURLINGTON MALL ROAD	Burlington, MA	100	%	None	10,230		54,787		65,017		(2,543)		10,230		52,244		62,474		5,942		1987	12/12/2018	0	-	40
GALLERIA 100	Atlanta, GA	100	%	None	7,285		72,449		79,734		488		7,285		72,937		80,222		7,238		1982	5/6/2019	0	-	40
GALLERIA 400	Atlanta, GA	100	%	None	5,687		92,915		98,602		698		5,687		93,613		99,300		5,605		1999	8/23/2019	0	-	40
GALLERIA 600	Atlanta, GA	100	%	None	5,418		81,003		86,421		9		5,418		81,012		86,430		5,135		2002	8/23/2019	0	-	40
ONE GALLERIA TOWER	Dallas, TX	100	%	None	5,286		107,767		113,053		982		5,286		108,749		114,035		5,933		1982	2/12/2020	0		40
TWO GALLERIA TOWER	Dallas, TX	100	%	None	3,835		109,605		113,440		545		3,836		110,149		113,985		6,061		1985	2/12/2020	0		40
THREE GALLERIA TOWER	Dallas, TX	100	%	None	6,541		125,490		132,031		312		6,541		125,802		132,343		5,895		1991	2/12/2020	0		40
222 SOUTH ORANGE AVENUE	Orlando, FL	100	%	None	1,899		18,417		20,316		157		1,899		18,574		20,473		—		1959	10/29/2020	0		40
UNDEVELOPED LAND PARCELS (6)	Various	100	%	None	44,509		—		44,509		363		41,620		3,252		44,872		446		N/A	Various			N/A
Total—All Properties					$	459,673	$	3,143,299	$	3,602,972	$	288,454	$	484,466	$	3,406,960	$	3,891,426	$	835,392

(1)All of Piedmont's properties are office buildings, except for the separately described Undeveloped Land Parcels.

(2)Total initial cost excludes purchase price allocated to intangible lease origination costs and intangible lease liabilities.

(3)Includes improvements and carrying costs capitalized subsequent to acquisition, as well as reductions related to write-offs of fully depreciated/amortized capitalized assets and impairment losses on real estate assets.

(4)The net carrying value of Piedmont’s total assets for federal income tax purposes is approximately $3.3 billion.

S-3

Index to Financial Statements

(5)Piedmont’s assets are depreciated or amortized using the straight-line method over the useful lives of the assets by class. Generally, Tenant Improvements and Lease Intangibles are amortized over the lease term. Generally, Building Improvements are depreciated over 5 - 25 years, Land Improvements are depreciated over 20 - 25 years, and Buildings are depreciated over 40 years.

(6)Undeveloped Land Parcels includes land parcels that Piedmont may develop in the future.

Piedmont Office Realty Trust, Inc.

Schedule III - Real Estate and Accumulated Depreciation

December 31, 2020

(dollars in thousands)

	2020		2019		2018
Real Estate:
Balance at the beginning of the year	$	3,818,287	$	3,924,531	$	4,438,209
Additions to/improvements of real estate	493,760		406,832		206,442
Assets disposed	(393,231)		(452,672)		(675,692)
Assets impaired (1)	—		(8,953)		—
Write-offs of intangible assets (2)	(15,891)		(36,428)		(33,067)
Write-offs of fully depreciated/amortized assets	(11,499)		(15,023)		(11,361)
Balance at the end of the year	$	3,891,426	$	3,818,287	$	3,924,531
Accumulated Depreciation and Amortization:
Balance at the beginning of the year	$	875,777	$	907,937	$	1,053,467
Depreciation and amortization expense	142,762		132,600		128,456
Assets disposed	(155,757)		(113,309)		(229,558)
Write-offs of intangible assets (2)	(15,891)		(36,428)		(33,067)
Write-offs of fully depreciated/amortized assets	(11,499)		(15,023)		(11,361)
Balance at the end of the year	$	835,392	$	875,777	$	907,937

(1)Piedmont recognized an impairment loss on the Dupree building, as well as the 600 Corporate Drive building (see Note 7).

(2)Consists of write-offs of intangible lease assets related to lease restructurings, amendments, and terminations.

S-4

EX-21.1

Exhibit 21.1

Subsidiaries of Piedmont Office Realty Trust, Inc. and Piedmont Operating Partnership, LP

Subsidiary	State of Organization
Piedmont Operating Partnership, LP	Delaware
Piedmont Washington Properties, Inc.	Maryland
Piedmont Office Holdings, Inc.	Georgia
Piedmont Office Holdings II, Inc.	Georgia
Piedmont Office Management, LLC	Georgia
Piedmont Government Services, LLC	Georgia
Piedmont Leasing, LLC	Delaware
Piedmont Power, LLC	Delaware
Piedmont-Las Colinas Springing Member, LLC	Delaware
Piedmont 1901 Market Business Trust	Delaware
Piedmont 1901 Market LLC	Delaware
Piedmont Bridgewater I, LLC	Delaware
Piedmont-Bridgewater, NJ, LLC	Delaware
Piedmont-Independence Square, LLC	Delaware
Piedmont-3100 Clarendon LLC	Delaware
Piedmont-Multi-State Owner, LLC	Delaware
Piedmont-One Brattle Square I, LLC	Delaware
Piedmont-One Brattle Square II, LLC	Delaware
4250 North Fairfax Property LLC	Delaware
4250 N. Fairfax Owner, LLC	Delaware
400 Virginia Avenue LLC	Delaware
1201 Eye Street, N.W. Associates LLC	Delaware
1215 ESDI, LLC	Delaware
1225 Equity LLC	Delaware
1225 Eye Street, N.W. Associates LLC	Delaware
1201 Equity LLC	Delaware
TTF Lending LLC	Delaware
TZO Lending LLC	Delaware
Piedmont-Two Pierce Place, LLC	Delaware
Piedmont-Las Colinas Corporate Center I, LP	Delaware
Piedmont-Las Colinas Corporate Center I, GP, LLC	Delaware
Piedmont-Las Colinas Corporate Center II, LP	Delaware
Piedmont-Las Colinas Corporate Center II, GP, LLC	Delaware
Piedmont 60 Broad Street, LLC	Delaware
Piedmont-800 Nicollet Avenue, LLC	Delaware
Piedmont-800 Nicollet Avenue Owner, LLC	Delaware
Piedmont-800 Nicollet Avenue Springing Member, LLC	Delaware
Piedmont-1430 Enclave Parkway, L.P.	Delaware
Piedmont-1430 Enclave Parkway, GP, LLC	Delaware
Enclave Place GP, LLC	Delaware
Enclave Place, LP	Delaware
Meridian Crossings, LLC	Delaware
Medici Atlanta, LLC	Delaware
Presidential Way Woburn, LLC	Delaware

400 TownPark, LLC	Delaware
Gavitello Atlanta, LLC	Delaware
Glenridge Highlands III, LLC	Delaware
Piedmont - 901 N. Glebe, LLC	Delaware
Piedmont 5 & 15 Wayside, LLC	Delaware
Piedmont Royal Lane, LP	Delaware
Piedmont Royal Lane GP, LLC	Delaware
Piedmont 6565 MacArthur Boulevard, LP	Delaware
Piedmont 6565 MacArthur Boulevard GP, LLC	Delaware
Piedmont One Lincoln Park, LP	Delaware
Piedmont One Lincoln Park GP, LLC	Delaware
Piedmont 161 Corporate Center, LP	Delaware
Piedmont 161 Corporate Center GP, LLC	Delaware
Piedmont 5 Wall Street Burlington, LLC	Delaware
Piedmont 1155 PCW, LLC	Delaware
Piedmont - Two Pierce Place Land, LLC	Delaware
Piedmont TownPark Land, LLC	Delaware
Piedmont Park Place, LP	Delaware
Piedmont Park Place GP, LLC	Delaware
Piedmont HBC, LLC	Delaware
Piedmont 500 TownPark, LLC	Delaware
Piedmont 80 Central, LLC	Delaware
Piedmont 300 Galleria, LLC	Delaware
Piedmont 200 & 250 South Orange Avenue, LLC	Delaware
Piedmont Glenridge Highlands One, LLC	Delaware
Piedmont Lending I, LLC	Delaware
Piedmont Lending II, LLC	Delaware
Piedmont Towers Orlando Member, LLC	Delaware
Piedmont-CNL Towers Orlando, LLC	Delaware
Piedmont-CNL Towers Orlando Owner, LLC	Delaware
Piedmont One Wayside, LLC	Delaware
Piedmont 200 Galleria, LLC	Delaware
Piedmont 200 Galleria Owner, LLC	Delaware
Piedmont 750 W John Carpenter, LLC	Delaware
Piedmont Norman Pointe I, LLC	Delaware
Piedmont 501 W Church Street, LLC	Delaware
Piedmont 9320 Excelsior, LLC	Delaware
Piedmont 25 Mall Road, LLC	Delaware
Piedmont 100 Galleria, LLC	Delaware
Piedmont 400 Galleria, LLC	Delaware
Piedmont 500 Galleria Land, LLC	Delaware
Piedmont 500 Galleria Roundabout, LLC	Delaware
Piedmont 600 Galleria, LLC	Delaware
Piedmont Dallas Galleria, LLC	Delaware
Piedmont Dallas Galleria II, LLC	Delaware
Piedmont SOAB Building, LLC	Delaware

EX-22.1

Exhibit 22.1

Subsidiary Issuer of Guaranteed Securities

Piedmont Operating Partnership, LP (“Piedmont OP”), the wholly-owned subsidiary of the registrant, Piedmont Office Realty Trust, Inc., is the issuer of (i) $350 million aggregate principal amount of 3.40% Senior Notes due 2023, (ii) $400 million aggregate principal amount of 4.450% Senior Notes due 2024, and (iii) $300 million aggregate principal amount of 3.15% Senior Notes due 2030 (collectively, the “Senior Notes”). The Senior Notes are fully and unconditionally guaranteed by the registrant, the parent entity that consolidates Piedmont OP and all other subsidiaries.

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statements Nos. 333-233068 and 333-166858 on Form S-3 and Nos. 333-218087, 333-142448, 333-48422, and 333-81319 on Form S-8 of our reports dated February 17, 2021, relating to the consolidated financial statements of Piedmont Office Realty Trust, Inc. and subsidiaries, and the effectiveness of Piedmont Office Realty Trust, Inc. and subsidiaries’ internal control over financial reporting, appearing in this Annual Report on Form 10-K of Piedmont Office Realty Trust, Inc. and subsidiaries for the year ended December 31, 2020.

/s/ Deloitte & Touche LLP

Atlanta, Georgia

February 17, 2021

EX-31.1

EXHIBIT 31.1

PRINCIPAL EXECUTIVE OFFICER CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, C. Brent Smith, certify that:

1.I have reviewed this annual report on Form 10-K of Piedmont Office Realty Trust, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: February 17, 2021

By:	/s/ C. BRENT SMITH
	C. Brent Smith
	Principal Executive Officer

EX-31.2

EXHIBIT 31.2

PRINCIPAL FINANCIAL OFFICER CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert E. Bowers, certify that:

1.I have reviewed this annual report on Form 10-K of Piedmont Office Realty Trust, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: February 17, 2021

By:	/s/ ROBERT E. BOWERS
	Robert E. Bowers
	Principal Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350)

In connection with the Annual Report of Piedmont Office Realty Trust, Inc. (the “Registrant”) on Form 10-K for the year ended December 31, 2020, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, C. Brent Smith, Chief Executive Officer of the Registrant, hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

It is not intended that this statement be deemed to be filed for the purposes of the Securities Exchange Act of 1934.

By:	/s/ C. BRENT SMITH
	C. Brent Smith
	Chief Executive Officer
	February 17, 2021

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350)

In connection with the Annual Report of Piedmont Office Realty Trust, Inc. (the “Registrant”) on Form 10-K for the year ended December 31, 2020, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, Robert E. Bowers, Chief Financial Officer of the Registrant, hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

It is not intended that this statement be deemed to be filed for the purposes of the Securities Exchange Act of 1934.

By:	/s/ ROBERT E. BOWERS
	Robert E. Bowers
	Chief Financial Officer
	February 17, 2021

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Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 16, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-34626
Entity Registrant Name	Piedmont Office Realty Trust, Inc.
Entity Central Index Key	0001042776
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	58-2328421
Entity Address, Address Line One	5565 Glenridge Connector Ste. 450
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30342
City Area Code	770
Local Phone Number	418-8800
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	PDM
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Emerging Growth	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 2,077,362,736
Entity Common Stock, Shares Outstanding		123,955,273
Documents Incorporated by Reference	Registrant incorporates by reference portions of the Piedmont Office Realty Trust, Inc. Definitive Proxy Statement for the 2021 Annual Meeting of Stockholders (Items 10, 11, 12, 13, and 14 of Part III) to be filed no later than April 30, 2021.

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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Land	$ 484,466	$ 485,560
Buildings and improvements, less accumulated depreciation of $767,542 and $730,750 as of December 31, 2020 and December 31, 2019, respectively	2,424,225	2,212,935
Intangible lease assets, less accumulated amortization of $67,850 and $50,766 as of December 31, 2020 and December 31, 2019, respectively	90,594	74,405
Construction in progress	56,749	29,920
Real estate assets held for sale, net	0	139,690
Total real estate assets	3,056,034	2,942,510
Cash and cash equivalents	7,331	13,545
Tenant receivables, net of allowance for doubtful accounts of $4,553 and $0 as of December 31, 2020 and December 31, 2019, respectively	8,448	8,226
Straight-line rent receivables	151,153	132,342
Notes receivable	118,500	0
Restricted cash and escrows	1,883	1,841
Prepaid expenses and other assets	23,277	25,427
Goodwill	98,918	98,918
Deferred lease costs, less accumulated amortization of $172,619 and $147,324 as of December 31, 2020 and December 31, 2019, respectively	274,266	265,747
Other assets held for sale, net	0	28,201
Total assets	3,739,810	3,516,757
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $10,932 and $7,626 as of December 31, 2020 and December 31, 2019, respectively	1,594,068	1,292,374
Secured debt, inclusive of premiums and unamortized debt issuance costs of $326 and $343 as of December 31, 2020 and December 31, 2019, respectively	27,936	189,030
Accounts payable, accrued expenses, and accrued capital expenditures	111,997	117,496
Dividends payable	25,683	26,427
Deferred income	36,891	34,609
Intangible lease liabilities, less accumulated amortization of $27,344 and $19,607 as of December 31, 2020 and December 31, 2019, respectively	35,440	25,069
Interest rate swaps	9,834	5,121
Other liabilities held for sale	0	7,657
Total liabilities	1,841,849	1,697,783
Commitments and Contingencies (Note 8)	0	0
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized, none outstanding as of December 31, 2020 or December 31, 2019	0	0
Preferred stock, no par value, 100,000,000 shares authorized, none outstanding as of December 31, 2020 or December 31, 2019	0	0
Common stock, $0.01 par value; 750,000,000 shares authorized, 123,839,419 shares issued and outstanding as of December 31, 2020; and 125,783,408 shares issued and outstanding at December 31, 2019	1,238	1,258
Additional paid-in capital	3,693,996	3,686,398
Cumulative distributions in excess of earnings	(1,774,856)	(1,871,375)
Other comprehensive income/(loss)	(24,100)	967
Piedmont stockholders’ equity	1,896,278	1,817,248
Noncontrolling interest	1,683	1,726
Total stockholders’ equity	1,897,961	1,818,974
Total liabilities and stockholders’ equity	$ 3,739,810	$ 3,516,757

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Intangible lease assets, accumulated amortization	$ 67,850	$ 50,766
Tenant receivables, allowance for doubtful accounts	4,553	0
Deferred lease costs, accumulated amortization	172,619	147,324
Liabilities:
Intangible lease liabilities, accumulated amortization	$ 27,344	$ 19,607
Stockholders’ Equity:
Shares-in-trust, shares authorized (in shares)	150,000,000	150,000,000
Shares-in-trust, shares outstanding (in shares)	0	0
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	123,839,419	125,783,408
Common stock, shares outstanding (in shares)	123,839,419	125,783,408
Unsecured Debt
Liabilities:
Discount (premium) and unamortized debt issuance costs	$ 10,932	$ 7,626
Secured Debt
Liabilities:
Discount (premium) and unamortized debt issuance costs	(326)	(343)
Building and building improvements
Assets:
Buildings and improvements, accumulated depreciation	$ 767,542	$ 730,750

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CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Rental and tenant reimbursement revenue	$ 519,953	$ 511,905	$ 504,410
Total revenues	535,024	533,178	525,967
Expenses:
Property operating costs	214,933	211,380	209,338
Depreciation	110,575	106,015	107,956
Amortization	93,294	76,666	63,295
Impairment loss on real estate assets	0	8,953	0
General and administrative	27,464	37,895	29,713
Total expenses	446,266	440,909	410,302
Other income (expense):
Interest expense	(54,990)	(61,594)	(61,023)
Other income	2,587	1,571	1,638
Loss on extinguishment of debt	(9,336)	0	(1,680)
Gain on sale of real estate assets	205,666	197,010	75,691
Total other income (expense)	143,927	136,987	14,626
Net income	232,685	229,256	130,291
Net loss applicable to noncontrolling interest	3	5	5
Net income applicable to Piedmont	$ 232,688	$ 229,261	$ 130,296
Per share information— basic and diluted:
Basic and diluted earnings per share (in dollars per share)	$ 1.85	$ 1.82	$ 1.00
Weighted-average shares outstanding - basic (in shares)	125,730,460	125,709,207	130,161,202
Weighted-average shares outstanding - diluted (in shares)	126,104,321	126,182,137	130,635,650
Property management fee revenue
Revenues:
Property related revenue	$ 2,867	$ 3,398	$ 1,450
Other property related income
Revenues:
Property related revenue	$ 12,204	$ 17,875	$ 20,107

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income applicable to Piedmont	$ 232,688	$ 229,261	$ 130,296
Other comprehensive income/(loss):
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(26,794)	(5,659)	692
Plus/(less): Reclassification of net loss/(gain) included in net income (See Note 5)	1,727	(1,836)	(300)
Other comprehensive income/(loss)	(25,067)	(7,495)	392
Comprehensive income applicable to Piedmont	$ 207,621	$ 221,766	$ 130,688

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Cumulative Distributions in Excess of Earnings	Cumulative Distributions in Excess of Earnings Cumulative Effect, Period of Adoption, Adjustment	Other Comprehensive Income/(Loss)	Other Comprehensive Income/(Loss) Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2017			142,359,000
Beginning balance, value at Dec. 31, 2017	$ 1,986,489	$ 0	$ 1,424	$ 3,677,360	$ (1,702,281)	$ 94	$ 8,164	$ (94)	$ 1,822
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases as part of an announced plan (in shares)			(16,495,000)
Share repurchases as part of announced plan	(301,678)		$ (165)		(301,513)
Offering costs	(85)			(85)
Dividends to common stockholders, stockholders of subsidiary, and dividends reinvested	(109,265)			(82)	(109,138)				(45)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)			355,000
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	5,996		$ 3	5,993
Net loss applicable to noncontrolling interests	(5)								(5)
Net income applicable to Piedmont	130,296				130,296
Other comprehensive income (loss)	392						392
Ending balance, (in shares) at Dec. 31, 2018			126,219,000
Ending balance, value at Dec. 31, 2018	1,712,140		$ 1,262	3,683,186	(1,982,542)		8,462		1,772
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases as part of an announced plan (in shares)			(728,000)
Share repurchases as part of announced plan	(12,482)		$ (7)		(12,475)
Offering costs	(710)			(710)
Dividends to common stockholders, stockholders of subsidiary, and dividends reinvested	(105,888)			(228)	(105,619)				(41)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)			292,000
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	4,153		$ 3	4,150
Net loss applicable to noncontrolling interests	(5)								(5)
Net income applicable to Piedmont	229,261				229,261
Other comprehensive income (loss)	$ (7,495)						(7,495)
Ending balance, (in shares) at Dec. 31, 2019	125,783,408		125,783,000
Ending balance, value at Dec. 31, 2019	$ 1,818,974		$ 1,258	3,686,398	(1,871,375)		967		1,726
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases as part of an announced plan (in shares)			(2,190,000)
Share repurchases as part of announced plan	(30,671)		$ (22)		(30,649)
Dividends to common stockholders, stockholders of subsidiary, and dividends reinvested	$ (105,565)			(5)	(105,520)				(40)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)	245,875		246,000
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	$ 7,605		$ 2	7,603
Net loss applicable to noncontrolling interests	(3)								(3)
Net income applicable to Piedmont	232,688				232,688
Other comprehensive income (loss)	$ (25,067)						(25,067)
Ending balance, (in shares) at Dec. 31, 2020	123,839,419		123,839,000
Ending balance, value at Dec. 31, 2020	$ 1,897,961		$ 1,238	$ 3,693,996	$ (1,774,856)		$ (24,100)		$ 1,683

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends to common stockholders (in dollars per share)	$ 0.84	$ 0.84	$ 0.84

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows from Operating Activities:
Net income	$ 232,685	$ 229,256	$ 130,291
Operating distributions received from unconsolidated joint ventures	0	0	10
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	110,575	106,015	107,956
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	2,080	87	(250)
Other amortization	84,534	71,609	58,330
Impairment loss on real estate assets	0	8,953	0
Loss on extinguishment of debt	349	0	1,665
General reserve for uncollectible accounts	4,553	0	0
Stock compensation expense	9,718	15,446	9,737
Gain on sale of real estate assets	(205,666)	(197,010)	(75,691)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(30,887)	(15,706)	(16,094)
Decrease/(increase) in prepaid expenses and other assets	823	309	(3,095)
Cash paid upon settlement of interest rate swaps	(19,930)	0	0
Increase/(decrease) in accounts payable and accrued expenses	6,264	(11,251)	(9,092)
(Decrease)/increase in deferred income	(1,814)	776	(898)
Net cash provided by operating activities	193,284	208,484	202,869
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(417,056)	(326,200)	(151,914)
Capitalized expenditures	(112,580)	(103,553)	(72,105)
Sales proceeds from wholly-owned properties	360,094	589,767	575,227
Note receivable issuance	0	0	(3,200)
Note receivable payment	0	0	3,200
Deferred lease costs paid	(28,334)	(25,639)	(27,430)
Net cash (used in)/provided by investing activities	(197,876)	134,375	323,778
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(1,363)	(151)	(1,040)
Proceeds from debt	1,174,383	592,000	977,062
Repayments of debt	(1,035,077)	(798,019)	(1,020,455)
Discount paid due to loan modification	(525)	0	0
Costs of issuance of common stock	0	(710)	(85)
Value of shares withheld for payment of taxes related to employee stock compensation	(2,703)	(3,295)	(2,219)
Repurchases of common stock as part of announced plan	(29,986)	(16,899)	(298,538)
Dividends paid and discount on dividend reinvestments	(106,309)	(106,433)	(184,093)
Net cash used in financing activities	(1,580)	(333,507)	(529,368)
Net (decrease)/increase in cash, cash equivalents, and restricted cash and escrows	(6,172)	9,352	(2,721)
Cash, cash equivalents, and restricted cash and escrows, beginning of year	15,386	6,034	8,755
Cash, cash equivalents, and restricted cash and escrows, end of year	$ 9,214	$ 15,386	$ 6,034

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Organization

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Piedmont Office Realty Trust, Inc. (“Piedmont”) (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the ownership, management, development, redevelopment, and operation of high-quality, Class A office properties located primarily in select sub-markets within seven major Eastern U.S. office markets, with a majority of its revenue being generated from the Sunbelt. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of its buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through its wholly-owned subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through various joint ventures which it controls. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of December 31, 2020, Piedmont owned 54 in-service office properties and one redevelopment asset in select sub-markets located within seven major U.S. office markets: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York. As of December 31, 2020, Piedmont's 54 in-service office properties comprised approximately 16.4 million square feet (unaudited) of primarily Class A commercial office space and were 86.8% leased.

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") of which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors.

Piedmont owns a majority interest in four properties through three joint ventures. Two of these joint ventures, 1201 and 1225 Eye Street, NW Associates, own the 1201 and 1225 Eye Street buildings, respectively, in Washington, D.C. The other joint venture, Piedmont-CNL Towers Orlando, LLC, owns CNL Center I and II, in Orlando, Florida. All three joint venture investments are consolidated under the voting model. Accordingly, Piedmont’s consolidated financial statements include the accounts of 1201 Eye Street, NW Associates, LLC, 1225 Eye Street, NW Associates, LLC, and Piedmont-CNL Towers Orlando, LLC.

All inter-company balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity and consequently the assets of the special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. The most significant of these estimates include the underlying cash flows and holding periods used in assessing impairment, judgements regarding the recoverability of goodwill, and the assessment of the collectibility of receivables. Future impacts of the COVID-19 pandemic on Piedmont and its tenants may affect these and other estimates used in the preparation of these financial statements. While Piedmont has made, what it believes to be, appropriate accounting estimates based on the facts and circumstances available as of the reporting date, actual results could materially differ from those estimates.

Real Estate Assets

Piedmont classifies its real estate assets as long-lived assets held for use or as long-lived assets held for sale. Held for use assets are stated at cost, as adjusted for any impairment loss, less accumulated depreciation. Held for sale assets are carried at lower of depreciated cost or estimated fair value, less estimated costs to sell. Piedmont generally reclassifies assets as held for sale once a sales contract has been executed and earnest money has become non-refundable.

Amounts capitalized to real estate assets consist of the cost of acquisition or construction, any tenant improvements or major improvements, betterments that extend the useful life of the related asset, and transaction costs associated with the acquisition of an individual asset that does not qualify as a business combination. All repairs and maintenance are expensed as incurred. Additionally, Piedmont capitalizes interest while the development, or redevelopment, of a real estate asset is in progress.

Piedmont’s real estate assets are depreciated or amortized using the straight-line method over the following useful lives:

Buildings	40 years
Building improvements	5-25 years
Land improvements	20-25 years
Tenant allowances	Lease term
Furniture, fixtures, and equipment	3-10 years
Intangible lease assets	Lease term

Piedmont continually monitors events and changes in circumstances that could indicate that the carrying amounts of the real estate and related intangible assets of either operating properties or properties under construction in which Piedmont has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present, management assesses whether the respective carrying values will be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition for assets held for use, or from the estimated fair values, less costs to sell, for assets held for sale. In the event that the expected undiscounted future cash flows for assets held for use or the estimated fair value, less costs to sell, for assets held for sale do not exceed the respective asset carrying value, management adjusts such assets to the respective estimated fair values and recognizes an impairment loss. Estimated fair values are calculated based on the following information, depending upon availability, in order of preference: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of undiscounted cash flows, including estimated sales value (which is based on key assumptions such as estimated market rents, lease-up periods, estimated lease terms, and capitalization and discount rates) less estimated selling costs.

Fair Value of Assets and Liabilities of Acquired Properties

Upon the acquisition of real properties, Piedmont records the fair value of properties (plus any related acquisition costs) allocated based on relative fair value as tangible assets, consisting of land and building, and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases and the value of in-place leases, based on their estimated fair values. Substantially all of Piedmont's property acquisitions qualify as asset acquisitions under Accounting Standards Codification ("ASC") 805, Business Combinations.

The estimated fair values of the tangible assets of an acquired property are determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land and building based on management’s determination of the estimated fair value of these assets. Management relies on a sales comparison approach using closed land sales and listings in determining the land value, and determines the as-if-vacant estimated fair value of a property using methods similar to those used by independent appraisers. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In

estimating carrying costs, management includes real estate taxes, insurance, and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates the cost to execute similar leases including leasing commissions, legal, and other related costs.

The estimated fair values of above-market and below-market in-place leases are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) management’s estimate of market rates for the corresponding in-place leases, measured over a period equal to the remaining terms of the leases, taking into consideration the probability of renewals for any below-market leases. The capitalized above-market and below-market lease values are recorded as intangible lease assets or liabilities and amortized as an adjustment to rental revenues over the remaining terms of the respective leases.

The estimated fair values of in-place leases include an estimate of the direct costs associated with obtaining the acquired or "in place" tenant, estimates of opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease. The amount capitalized as direct costs associated with obtaining a tenant include commissions, tenant improvements, and other direct costs and are estimated based on management’s consideration of current market costs to execute a similar lease. These direct lease origination costs are included in deferred lease costs in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of opportunity costs is calculated using the contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. These lease intangibles are included in intangible lease assets in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases.

Gross intangible assets and liabilities, inclusive of amounts classified as real estate assets held for sale, recorded at acquisition as of December 31, 2020 and 2019, respectively, are as follows (in thousands):

	December 31, 2020		December 31, 2019
Intangible Lease Assets:
Above-Market In-Place Lease Assets	$	2,167	$	2,082
In-Place Lease Valuation	$	156,277	$	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)	$	250,367	$	256,627
Intangible Lease Liabilities (Below-Market In-Place Leases)	$	62,784	$	84,292

For the years ended December 31, 2020, 2019, and 2018, respectively, Piedmont recognized amortization of intangible lease costs, included as a component of Amortization in the accompanying consolidated statements of income, as follows (in thousands):

	2020		2019		2018
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$	77,000	$	62,413	$	48,940
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$	12,191	$	8,322	$	7,615

Net intangible assets and liabilities as of December 31, 2020 will be amortized as follows (in thousands):

	Intangible Lease Assets
	Above-Market In-place Lease Assets		In-Place Lease Valuation		Intangible Lease Origination Costs (1)		Below-Market In-place Lease Liabilities
For the year ending December 31:
2021	$	420	$	27,520	$	38,659	$	10,899
2022	300		20,662		30,447		8,422
2023	103		13,922		21,019		5,139
2024	70		9,140		14,462		3,238
2025	6		5,657		10,069		2,072
Thereafter	18		12,776		24,881		5,670
	$	917	$	89,677	$	139,537	$	35,440
Weighted-Average Amortization Period (in years)	3		5		5		5

(1)Included as a component of Deferred Lease Costs in the accompanying consolidated balance sheets.

Cash and Cash Equivalents

Piedmont considers all highly-liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents include cash and short-term investments. The majority of Piedmont’s cash and cash equivalents are held at major commercial banks and at times may exceed the Federal Deposit Insurance Corporation limit of $250,000. Short-term investments consist of investments in money market accounts stated at cost, which approximates estimated fair value, and available-for-sale securities resulting from Piedmont's non-qualified deferred compensation program carried at estimated fair value.

Tenant Receivables and Straight-line Rent Receivables

Tenant receivables are comprised of rental and reimbursement billings due from tenants, and straight-line rent receivables representing the cumulative amount of future adjustments necessary to present rental income on a straight-line basis. Effective January 1, 2019, Piedmont adopted ASC 842 Leases ("ASC 842"), as well as Accounting Standards Update ("ASU"), ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments—Credit Losses ("ASU 2018-19") which clarifies that operating lease receivables are within the scope of ASC 842; therefore, Piedmont has elected to evaluate the collectibility of its operating lease receivables on a tenant/lease-specific basis and, as of January 1, 2019, began recognizing changes in the collectibility assessment of its operating lease receivables as a reduction of rental and tenant reimbursement revenue, rather than as bad debt expense, a component of property operating costs. Prior to the adoption of ASC 842, during the year ended December 31, 2018, Piedmont recognized approximately $91,000 of expense related to uncollectible operating lease receivables as additional property operating costs. See further discussion of collectibility assessments of tenant receivables and other lease-related assets due to COVID-19 pandemic during 2020 in Note 8 and in Allowance for Doubtful Accounts below.

Allowance for Doubtful Accounts

As detailed above, Piedmont records contra-revenue adjustments for tenant/lease-specific changes in the collectibility assessments of its operating lease receivables as a reduction of rental and tenant reimbursement revenues in accordance with ASC 842. These charges reduce tenant and straight-line rent receivable to net realizable value upon recognition. However, during the year ended December 31, 2020, Piedmont also established a general reserve, with charges related to the establishment of this reserve recorded as a reduction of rental and tenant reimbursement revenues, and the balance of the reserve is disclosed as allowance for doubtful accounts in the accompanying consolidated balance sheets. Unlike tenant-specific adjustments recorded in accordance with ASC 842, the general reserve is for amounts that may become uncollectible in the future.

Restricted Cash and Escrows

Restricted cash and escrows principally relate to the following types of items:

•escrow accounts held by lenders to pay future real estate taxes, insurance, debt service, and tenant improvements;

•net sales proceeds from property sales held by qualified intermediary for potential Section 1031 exchange;

•earnest money paid in connection with future acquisitions; and

•security and utility deposits paid by tenants per the terms of their respective leases.

Restricted cash and escrows are generally reclassified to other asset or liability accounts upon being used to purchase assets, satisfy obligations, or settle tenant obligations.

Prepaid Expenses and Other Assets

Prepaid expenses and other assets are primarily comprised of the following items:

•prepaid property taxes, insurance and operating costs;

•receivables which are unrelated to tenants, for example, insurance proceeds receivable from insurers related to casualty losses; and

•equipment, furniture and fixtures, and tenant improvements for Piedmont’s corporate office and property management office space, net of accumulated depreciation.

Prepaid expenses and other assets will be expensed as utilized or depreciated in the case of Piedmont's corporate assets. Balances without a future economic benefit are expensed as they are identified.

Goodwill

Goodwill is the excess of cost of an acquired entity over the amounts specifically assigned to assets acquired and liabilities assumed in purchase accounting for business combinations. In conjunction with Piedmont's change in segment reporting (see Note 17), Piedmont has reallocated its goodwill to each of its seven reporting units on the basis of relative fair value of each reporting unit compared to the total of all reporting units. Piedmont tests the carrying value of the goodwill assigned to each of its seven reporting units for impairment on an annual basis, or on an interim basis if an event occurs or circumstances change that would indicate that a material indicator of impairment exists. Such interim circumstances may include, but are not limited to, significant adverse changes in legal factors or in the general business climate, adverse action or assessment by a regulator, unanticipated competition, the loss of key personnel, or persistent declines in an entity’s stock price below carrying value of the entity. Piedmont first assesses qualitative factors to determine whether the existence of events or circumstances leads to a determination that a material indicator of impairment exists. If Piedmont concludes, after assessing the totality of events and circumstances during the qualitative analysis, that a material indicator does exist and that it is more likely than not that the goodwill balance in one or more reporting units is impaired, then Piedmont will recognize a goodwill impairment loss equal to the excess of the reporting unit’s carrying amount over its estimated fair value (not to exceed the total goodwill allocated to that reporting unit). There were no changes in the carrying amount of Piedmont's goodwill during the year ended December 31, 2020.

Interest Rate Derivatives

Piedmont periodically enters into interest rate derivative agreements to hedge its exposure to changing interest rates. As of December 31, 2020 and 2019, all of Piedmont's interest rate derivatives were designated as effective cash flow hedges and carried on the balance sheet at estimated fair value. Piedmont reassesses the effectiveness of its derivatives designated as cash flow hedges on a regular basis to determine if they continue to be highly effective and if the forecasted transactions remain highly probable. Piedmont does not use derivatives for trading or speculative purposes.

The changes in estimated fair value of interest rate swap agreements designated as effective cash flow hedges are recorded in other comprehensive income (“OCI”), and subsequently reclassified to earnings when the hedged transactions occur. The estimated fair value of the interest rate derivative agreement is recorded as interest rate derivative asset or as interest rate derivative liability in the accompanying consolidated balance sheets. Amounts received or paid under interest rate derivative agreements are recorded as reductions or additions to interest expense in the consolidated statements of income as incurred. Additionally, when Piedmont settles forward starting swap agreements, any gain or loss is recorded as accumulated other comprehensive income and is amortized to interest expense over the term of the respective notes on a straight line basis (which approximates the effective interest method). Further, Piedmont classifies cash flows from the settlement of hedging derivative instruments in the same category as the underlying exposure which is being hedged. Settlements resulting from the hedge of

Piedmont's exposure to interest rate changes are classified as operating cash flows in the accompanying consolidated statements of cash flows.

Deferred Lease Costs

Deferred lease costs are comprised of costs and incentives incurred to acquire operating leases. In addition to direct costs, deferred lease costs also include intangible lease origination costs related to in-place leases acquired as part of a property acquisition. Prior to the adoption of ASC 842, Piedmont capitalized direct payroll costs incurred related to negotiating and executing specific leases of approximately $0.3 million for the year ended December 31, 2018. ASC 842 prohibited the capitalization of such costs beginning January 1, 2019.

Deferred lease costs are amortized on a straight-line basis over the terms of the related underlying leases in the accompanying consolidated statements of income as follows:

•Approximately $60.2 million, $50.3 million, and $43.6 million of deferred lease costs for the years ended December 31, 2020, 2019, and 2018, respectively, are included in amortization expense; and

•Approximately $3.4 million, $3.2 million, and $2.6 million, of deferred lease costs related to lease incentives granted to tenants for the years ended December 31, 2020, 2019, and 2018, respectively, was included as an offset to rental and tenant reimbursement revenue.

Upon receipt of a lease termination notice, Piedmont adjusts the amortization of any unamortized deferred lease costs to be recognized ratably over the revised remaining term of the lease after giving effect to the termination notice. If there is no remaining lease term and no other obligation to provide the tenant space in the property, then any unamortized tenant-specific costs are recognized immediately upon termination.

Debt

When mortgage debt is assumed upon the acquisition of real property, Piedmont adjusts the loan to relative fair value with a corresponding adjustment to building and other intangible assets assumed as part of the purchase. The fair value adjustment is amortized to interest expense over the term of the loan using the effective interest method. Amortization of such fair value adjustments was approximately $0.5 million for each of the years ended December 31, 2020, 2019, and 2018, respectively.

Piedmont records premiums and discounts on debt issuances as an increase/decrease to the principal amount of the loan in the accompanying consolidated balance sheets, and amortizes such premiums or discounts as a component of interest expense over the life of the underlying loan facility using the effective interest method. Piedmont recorded discount amortization of approximately $0.3 million, $0.2 million and $0.2 million for the years ended December 31, 2020, 2019, and 2018, respectively.

Piedmont presents all debt issuance costs as an offset to the principal amount of debt in the accompanying consolidated balance sheets. Piedmont amortizes these costs to interest expense on a straight-line basis (which approximates the effective interest rate method) over the terms of the related financing arrangements. Piedmont recognized amortization of such costs for the years ended December 31, 2020, 2019, and 2018 of approximately $3.0 million, $2.4 million, and $2.4 million, respectively.

Deferred income

Deferred income is primarily comprised of the following items:

•prepaid rent from tenants;

•tenant reimbursements related to operating expense or property tax expenses which may be due to tenants as part of an annual operating expense reconciliation; and

•tenant improvement allowance overages where Piedmont owns the underlying improvements.

Deferred income related to prepaid rents from tenants will be recognized as income in the period it is earned. Amounts related to operating expense reconciliations or property tax expense are relieved when the tenant's reconciliation is completed in accordance with the underlying lease, and payment is issued to the tenant. Tenant improvement allowance overages paid by the tenant, where Piedmont owns all of the underlying improvements, are recorded as deferred income and amortized on a straight-line basis into rental and tenant reimbursement revenue over the term of the respective leases.

Shares-in-trust

To date, Piedmont has not issued any shares-in-trust; however, under Piedmont’s charter, it has authority to issue a total of 150,000,000 shares-in-trust, which would be issued only in the event that there is a purported transfer of, or other change in or affecting the ownership of, Piedmont’s capital stock that would result in a violation of the ownership limits that are included in Piedmont’s charter to protect its REIT status.

Preferred Stock

To date, Piedmont has not issued any shares of preferred stock; however, Piedmont is authorized to issue up to 100,000,000 shares of one or more classes or series of preferred stock. Piedmont’s board of directors may determine the relative rights, preferences, and privileges of any class or series of preferred stock that may be issued, and can be more beneficial than the rights, preferences, and privileges attributable to Piedmont’s common stock.

Common Stock

Under Piedmont’s charter, it has authority to issue a total of 750,000,000 shares of common stock with a par value of $0.01 per share. Each share of common stock is entitled to one vote and participates in distributions equally. In February 2020, the board of directors re-authorized the stock repurchase program for up to $200 million in share repurchases under which Piedmont may repurchase its own shares from time to time, in accordance with applicable securities laws, in the open market or in privately negotiated transactions. The timing of repurchases is dependent upon market conditions and other factors, and repurchases may be commenced or suspended from time to time in Piedmont's discretion, without prior notice. As of December 31, 2020, Piedmont had approximately $169.3 million of remaining capacity under the program which may be used for share repurchases through February 2022.

Equity Securities Issued At-The-Market

Under Piedmont's at-the-market stock offering program ("ATM program"), Piedmont may offer and sell shares of its common stock from time to time in “at-the-market” offerings with an aggregate gross sales price of up to $250 million. In connection with the ATM Program, Piedmont may, at its discretion, enter into forward equity sale agreements. The use of a forward equity sale agreement would allow Piedmont to lock in a share price on the sale of shares of its common stock at the time the agreement is executed, but defer receiving the proceeds from the sale of shares until a later date, allowing Piedmont to better align such funding with its capital needs. Sales of shares of Piedmont’s common stock through its banking relationships, if any, will be made in amounts and at times to be determined by Piedmont from time to time, but Piedmont has no obligation to sell any of the shares in the offering and may suspend sales in connection with the offering at any time. Sales of Piedmont's common stock under forward equity sale agreements, if undertaken, meet the derivatives and hedging guidance scope exception to be accounted for as equity instruments based on the following assessments: (i) none of the agreements’ exercise contingencies were based on observable markets or indices besides those related to the market for Piedmont's own stock price and operations; and (ii) none of the settlement provisions precluded the agreements from being indexed to Piedmont's own stock.

Underwriting commissions and offering costs incurred in connection with all common equity offerings, including any potential issuances under Piedmont's ATM Program, are reflected as a reduction of additional paid-in capital.

Dividends

As a REIT, Piedmont is required by the Internal Revenue Code of 1986, as amended (the “Code”), to make distributions to stockholders each taxable year equal to at least 90% of its annual taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to stockholders (“REIT taxable income”). Historically, Piedmont sponsored a dividend reinvestment plan ("DRP") pursuant to which common stockholders could elect (if their brokerage agreements allowed) to reinvest an amount equal to the dividends declared on their common shares into additional shares of Piedmont’s common stock in lieu of receiving cash dividends. During the year ended December 31, 2020, the board of directors terminated the company-funded DRP offered through its transfer agent.

Noncontrolling Interest

Noncontrolling interest is the equity interest of consolidated entities that is not owned by Piedmont. Noncontrolling interest is adjusted for the noncontrolling partners' share of contributions, distributions, and earnings (losses) in accordance with the respective partnership agreement. Earnings allocated to such noncontrolling partners are recorded as income applicable to noncontrolling interest in the accompanying consolidated statements of income.

Revenue Recognition

Piedmont's revenues consist of the following:

Rental and tenant reimbursement income - consists of revenue from leases with Piedmont's tenants, as well as reimbursements for services prescribed by such leases. Piedmont evaluates contracts at commencement to determine if the contract contains a lease. If a contract is determined to contain a lease, the lease is evaluated to determine whether it is an operating, sales-type, or a direct financing lease. All of Piedmont's leases where Piedmont is the lessor are for the lessee's use of space in Piedmont's commercial office properties and are classified as operating leases.

In most lease arrangements, Piedmont finances improvements to leased space and is deemed the owner of the tenant improvements. The determination of who owns the improvements, whether payments to tenants constitute lease incentives or tenant improvements, and the timing of revenue recognition requires the exercise of significant judgment based on the facts and circumstances of the specific lease arrangement and is not based on any one factor. When evaluating whether Piedmont or its tenant owns the improvements, management considers a number of factors, including, among other things:

•whether the tenant is obligated by the terms of the lease agreement to construct or install the leasehold improvements as a condition of the lease;

•whether the landlord can require the lessee to make specified improvements or otherwise enforce its economic rights to those assets;

•whether the tenant is required to provide the landlord with documentation supporting the cost of tenant improvements prior to reimbursement by the landlord;

•whether the landlord is obligated to fund cost overruns for the construction of leasehold improvements;

•whether the leasehold improvements are unique to the tenant or could reasonably be used by other parties; and

•whether the estimated economic life of the leasehold improvements is long enough to allow for a significant residual value that could benefit the landlord at the end of the lease term.

These tenant improvements are recorded as capital assets by Piedmont and depreciated, typically over the lease term. Payments made by the tenants for tenant improvements owned by Piedmont are treated as deferred revenues and amortized into rental and tenant reimbursement revenue over the lease term.

The timing of rental revenue recognition is largely dependent on our conclusion as to whether Piedmont, or its tenant, is the owner of tenant improvements at the leased property. When Piedmont owns the tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the finished space, which is typically when the improvements being recorded as Piedmont's asset are substantially complete. In some instances, Piedmont may cede control of the leased space to the tenant to be responsible for tenant-owned improvements for the space. In such arrangements, payments made by Piedmont to its tenant are treated as lease incentives, amortized as a reduction to rental and tenant reimbursement revenue over the lease term, which typically begins once the tenant takes possession of the unimproved space.

Lease payments are typically comprised of both fixed base rental payments and separately billed variable lease payments for reimbursement of services performed by Piedmont for the tenant as prescribed by the lease. Fixed base rental payments, as well as any fixed portion of reimbursement income, are recognized on a straight-line basis over the lease term. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred. Rents and tenant reimbursements collected in advance are recorded as deferred income in the accompanying consolidated balance sheets.

Property management fee revenue - consists of revenue earned by Piedmont related to operating and managing office properties owned by other third-parties. Such income is within the scope of ASC 606, Revenue from Contracts with Customers ("ASC 606"). Because property management services represent a performance obligation that are satisfied over the length of the contract, not at any specific point in time, and have the same measure of transfer (time elapsed), property management fee revenue is recognized over time. Any variable consideration transferred as part of these management agreements is recognized in the quarter that the underlying cash receipts are collected, consistent with the allocation objective of allocating the transaction price in an amount that depicts the amount of consideration to which Piedmont expects to be entitled in exchange for transferring the promised service to the customer.

Other property related income - consists of all other property related income from Piedmont's customers (tenants) that is not derived from a contract meeting the definition of a lease and is therefore also within the scope of ASC 606. Examples of such income include parking revenue and income from licenses with unrelated third-parties to place antennae and/or fiber optic cables in or on Piedmont's buildings. These services also represent a performance obligation that is satisfied over the length of

the contract, not at any specific point in time, and has the same measure of transfer (time elapsed); therefore, revenue related to these licenses is also recognized over time.

Gains on the sale of real estate assets, like all non-lease related revenue, are subject to a five-step model requiring that Piedmont identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue upon satisfaction of the performance obligations. In circumstances where Piedmont contracts to sell a property with material post-sale involvement, such involvement must be accounted for as a separate performance obligation in the contract and a portion of the sales price allocated to each performance obligation. When the post-sale involvement performance obligation is satisfied, the portion of the sales price allocated to it will be recognized as gain on sale of real estate assets. Property dispositions with no continuing involvement will continue to be recognized upon closing of the sale. In circumstances where Piedmont extends seller financing as part of a sale of real estate assets, Piedmont assesses the collectibility of the notes receivable as of each reporting period end. Notes receivable that are deemed to be uncollectible or fully in default are reduced to their net realizable value, which approximates their fair value.

Stock-based Compensation

Piedmont has issued stock-based compensation in the form of restricted stock to its employees and directors. For employees, such compensation has been issued pursuant to Piedmont's Long-term Incentive Compensation ("LTIC") program. The LTIC program is comprised of an annual restricted stock grant component (the "Restricted Stock Award" program) and a multi-year performance share component (the "Performance Share" program). Awards granted pursuant to the Restricted Stock Award and Performance Share programs, as well as director's awards, are classified as equity awards or liability awards based on the underlying terms of the program agreement. Awards classified as equity awards are expensed straight-line over the vesting period, with issuances recorded as a reduction to additional paid in capital. Forfeitures are recorded when they occur. Awards classified as liability awards are remeasured at each reporting period over the service period, with issuances recorded as a reduction to accrued expense. The compensation expense recognized related to both of these award types is recorded as property operating costs for those employees whose job is related to property operations and as general and administrative expense for all other employees and directors in the accompanying consolidated statements of income.

Non-qualified Deferred Compensation Plan

Piedmont previously offered a non-qualified deferred compensation plan ("NQDC Plan") to certain employees which allowed the employee to elect to defer receipt of compensation, including both cash and stock-based compensation, until future taxable years. As of December 31, 2019, Piedmont suspended the NQDC Plan so that no additional amounts may be deferred. Amounts deferred prior to the suspension of the NQDC Plan are invested in trading securities held in a "rabbi trust" and are measured using quoted market prices as of the reporting date, with changes in fair value recognized in net income. As of December 31, 2020 and 2019, Piedmont held approximately $0.8 million and $0.6 million, respectively, of these trading securities. Such investments are included in cash equivalents due to their short-term, liquid nature, with the corresponding liability included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets.

Net Income Available to Common Stockholders Per Share

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including the dilutive effect of nonvested restricted stock. The dilutive effect of nonvested restricted stock is calculated using the treasury stock method to determine the number of additional common shares that would become outstanding if the remaining unvested restricted stock awards vested. Further, Piedmont has elected to use the "end of the reporting period" convention when using the treasury stock method to calculate the dilutive effect of any shares issued pursuant to forward equity sale agreements in connection with Piedmont's ATM Program described above. Under this methodology, the assumed sale proceeds are calculated using the closing price of Piedmont's stock as of the end of the respective reporting period.

Income Taxes

Piedmont has elected to be taxed as a REIT under the Code, and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes, subject to fulfilling, among other things, its taxable income distribution requirement. However, Piedmont is subject to federal income taxes related to the operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements. Accordingly, the only provision for federal income taxes in the accompanying consolidated financial statements relates to POH. POH does not have significant tax provisions or deferred income tax items. These operations resulted in approximately $4,000, $160,000, and $(97,000) in income tax expense/(recoveries) for the years ended December 31, 2020, 2019, and 2018, respectively, as a component of other income/(expense) in the accompanying consolidated statements of income. Further, Piedmont is subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in general and administrative expenses in the accompanying consolidated financial statements.

Reclassifications

Certain prior period amounts presented in the accompanying consolidated balance sheets have been reclassified as of December 31, 2019 to conform to the current period financial statement presentation related to the 1901 Market Street building, which was classified as held for sale as of March 31, 2020, and sold on June 25, 2020. (see Note 13).

Accounting Pronouncements and Amendments Adopted during the year ended December 31, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the year ended December 31, 2020, Piedmont elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. Piedmont continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, Piedmont adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by ASC 842 Leases. As substantially all of Piedmont's receivables are operating lease receivables there was no

material impact to Piedmont's accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the year December 31, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. Piedmont has elected not to apply the relief provided by the FASB Staff, and has instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with Piedmont's tenants in Note 8 below.

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Acquisitions

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Acquisitions

Acquisitions

During the year ended December 31, 2020, Piedmont acquired three properties and adjacent developable land (collectively the "Dallas Galleria Office Towers"), as well as the 222 South Orange Avenue building, using cash on hand and available funds from the $500 Million Unsecured 2018 Line of Credit, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Ownership Percentage Acquired	Rentable Square Feet	Percentage Leased as of Acquisition	Net Contractual Purchase Price (in millions)
Dallas Galleria Office Towers	Dallas, Texas	February 12, 2020	100%	1,435,466	95%	$396.2	(1)
222 South Orange Avenue	Orlando, Florida	October 29, 2020	100%	127,248	—%	$20.0	(2)

(1)Dallas Galleria Office Towers price includes the purchase of an adjacent parcel of approximately 1.9 acres of developable land.

(2)Piedmont allocated the purchase price amongst land of approximately $1.9 million and building of approximately $18.1 million.

The purchase price of the Dallas Galleria Office Towers and undeveloped land, inclusive of approximately $0.6 million of closing costs, was allocated as follows (in thousands):

	Dallas Galleria Office Towers and Undeveloped Land
Land	$	19,674
Building and improvements	293,760
Intangible lease assets (1)	49,177
Lease acquisition costs, net of tenant credits received from seller (1)	1,344
Intangible lease origination costs (1)	55,060
Intangible lease liabilities (1)	(22,169)
Total purchase price	$	396,846

(1)Amortization of in-place lease intangibles and lease acquisition costs are recognized using the straight-line method over approximately 5.2 years, the average remaining life of in-place leases.

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Debt

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Debt

Debt

During the year ended December 31, 2020, Piedmont issued, through Piedmont OP, $300 million in aggregate principal amount of 3.15% Senior Notes due 2030 (the “$300 Million Unsecured Senior Notes”), which mature on August 15, 2030. Upon issuance of the $300 Million Unsecured Senior Notes, Piedmont OP received proceeds of approximately $297.7 million, reflecting a discount of approximately $2.3 million which will be amortized as interest expense under the effective interest method over the ten-year term of the $300 Million Unsecured Senior Notes. In addition, in conjunction with the issuance, Piedmont settled four forward starting interest rate swaps, consisting of notional amounts of $200 million. These swaps were settled at a loss of approximately $19.9 million that was recorded as accumulated other comprehensive income and is being amortized as an increase in interest expense over the ten-year term of the $300 Million Unsecured Senior Notes. See Note 5 for further detail. The proceeds from the $300 Million Unsecured Senior Notes were used to fully repay the $300 Million Unsecured 2020 Term Loan that was obtained earlier during the year ended December 31, 2020 to provide interim financing for the purchase of the Dallas Galleria Office Towers.

Additionally, during the year ended December 31, 2020, Piedmont amended the $250 Million Unsecured 2018 Term Loan to reduce the applicable interest rate spread from LIBOR plus 160 basis points to LIBOR plus 95 basis points, based on Piedmont's current credit rating.

Interest on the $300 Million Unsecured Senior Notes is payable semi-annually in arrears on February 15 and August 15 of each year, beginning on February 15, 2021. The $300 Million Unsecured Senior Notes are fully and unconditionally guaranteed on a senior unsecured basis by Piedmont. Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, prior to May 15, 2030, at a redemption price equal to the greater of (i) 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed and (ii) a “make-whole” amount, plus any unpaid accrued interest. In addition, at any time on or after May 15, 2030, Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed plus unpaid accrued interest. The $300 Million Unsecured Senior Notes are subject to certain typical covenants that, subject to certain exceptions: (a) limit the ability of Piedmont and Piedmont OP to, among other things, incur additional secured and unsecured indebtedness; (b) limit the ability of Piedmont and Piedmont OP to merge, consolidate, sell, lease or otherwise dispose of their properties and assets substantially as an entirety; and (c) require Piedmont to maintain a pool of unencumbered assets. The $300 Million Unsecured Senior Notes are also subject to customary events of default which, if any of them occurs, would permit or require the principal of and accrued interest on the $300 Million Unsecured Senior Notes to become or to be declared due and payable.

Finally, during the year ended December 31, 2020, Piedmont sold the 1901 Market Street building for a substantial gain (see Note 13 for further details) and used the majority of the net sales proceeds to repay the $160 Million Fixed-Rate Loan that was secured by the property and all remaining outstanding borrowings under the $500 Million Unsecured 2018 Line of Credit. As a result of repaying the $160 Million Fixed-Rate Loan in advance of its stated maturity, Piedmont recognized a $9.3 million loss on early extinguishment of debt comprised of a prepayment penalty and the write-off of unamortized debt issuance costs and discounts associated with the loan.

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of December 31, 2020 and 2019, including net discounts/premiums and unamortized debt issuance costs (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								2020		2019
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	27,610	$	28,687
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		—		160,000
Net premium and unamortized debt issuance costs								326		343
Subtotal/Weighted Average (5)	5.55	%						27,936		189,030
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan	LIBOR +  1.00%		1.16	%		11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		1.05	%		9/30/2022	(7)	5,000		—
$350 Million Unsecured Senior Notes	3.40	%	3.43	%		6/01/2023		350,000		350,000
$400 Million Unsecured Senior Notes	4.45	%	4.10	%		3/15/2024		400,000		400,000
$250 Million Unsecured 2018 Term Loan	LIBOR + 0.95%		2.08	%	(8)	3/31/2025		250,000		250,000
$300 Million Unsecured Senior Notes	3.15	%	3.90	%	(9)	8/15/2030		300,000		—
Discounts and unamortized debt issuance costs								(10,932)		(7,626)
Subtotal/Weighted Average (5)	2.98	%						1,594,068		1,292,374
Total/Weighted Average (5)	3.03	%						$	1,622,004	$	1,481,404

(1)Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of December 31, 2020 and 2019 is interest-only until maturity.

(2)Effective rate after consideration of settled or in-place interest rate swap agreements, issuance premiums/discounts, and/or fair market value adjustments upon assumption of debt.

(3)Collateralized by the 5 Wall Street building in Burlington, Massachusetts.

(4)Previously collateralized by the 1901 Market Street building in Philadelphia, Pennsylvania.

(5)Weighted average is based on contractual balance of outstanding debt and the stated or effectively fixed interest rates as of December 31, 2020.

(6)On a periodic basis, Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR

locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on

Piedmont’s current credit rating.

(7)Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided Piedmont is not then in default and upon payment of extension fees.

(8)The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan. For the remaining variable portion of the loan, Piedmont may periodically select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating. The rate presented is the weighted-average rate for the effectively fixed and variable portions of the debt outstanding as of December 31, 2020 (see Note 5 for more detail).

(9)The $300 Million Unsecured Senior Notes have a fixed coupon rate of 3.15%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.24%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.90%.

A summary of Piedmont's consolidated principal outstanding for aggregate debt maturities of its indebtedness as of December 31, 2020, is provided below (in thousands):

2021	$	327,610
2022	5,000
2023	350,000
2024	400,000
2025	250,000
Thereafter	300,000
Total	$	1,632,610

Piedmont’s weighted-average interest rate as of December 31, 2020 and 2019, for the aforementioned borrowings was approximately 3.03% and 3.76%, respectively. Piedmont made interest payments on all indebtedness, including interest rate swap cash settlements, of approximately $50.7 million, $64.0 million, and $63.1 million during the years ended December 31, 2020, 2019, and 2018, respectively. Also, Piedmont capitalized interest of approximately $1.0 million, $2.1 million, and $1.4 million for the years ended December 31, 2020, 2019, and 2018, respectively. As of December 31, 2020, Piedmont believes it was in compliance with all financial covenants associated with its debt instruments. See Note 6 for a description of Piedmont’s estimated fair value of debt as of December 31, 2020.

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Derivative Instruments

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

Derivative Instruments

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future variable rate debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

Cash Flow Hedges of Interest Rate Risk

Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for Piedmont making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

During the year ended December 31, 2020, Piedmont entered into and subsequently settled four forward starting interest rate swap agreements with a total notional value of $200 million to hedge the risk of changes in the interest-related cash flows associated with the issuance of the $300 Million Unsecured Senior Notes (see Note 4). The settlement resulted in a loss of approximately $19.9 million, which was recorded as accumulated OCI and is being amortized as additional interest expense over the ten-year term of the $300 Million Unsecured Senior Notes.

During the year ended December 31, 2018, Piedmont repaid the $300 Million Unsecured 2013 Term Loan in advance of its maturity without penalty. In connection with this early debt prepayment, six interest rate swap agreements which were identified as cash flow hedges were also terminated, resulting in a receipt of approximately $0.8 million from Piedmont's counterparties for the settlement of the swaps. These proceeds were recorded in accumulated OCI and were amortized as an offset to interest expense in the consolidated statement of income over the original term of the terminated interest rate swaps through January 2019. In connection with this termination Piedmont also recognized a non-cash loss of approximately $1.3 million due to it becoming probable that the hedged forecasted transactions would not occur, offset by a mark-to-market gain on these cash flow hedges of approximately $0.1 million for the year ended December 31, 2018.

Finally, as of December 31, 2020, Piedmont was party to two other interest rate swap agreements, which are designated as effective cash flow hedges and hedge the variable cash flows covering $100 million of the $250 Million Unsecured 2018 Term Loan. The maximum length of time over which Piedmont is hedging its exposure to the variability in future cash flows related to these interest rate swap agreements is 51 months.

A detail of Piedmont’s interest rate derivatives outstanding as of December 31, 2020 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025

Piedmont presents its interest rate derivatives on its consolidated balance sheets on a gross basis as interest rate swap assets and interest rate swap liabilities. A detail of Piedmont’s interest rate derivatives on a gross and net basis as of December 31, 2020 and 2019, respectively, is as follows (in thousands):

Interest rate swaps classified as:	December 31, 2020		December 31, 2019
Gross derivative assets	$	—	$	—
Gross derivative liabilities	(9,834)		(5,121)
Net derivative liability	$	(9,834)	$	(5,121)

The gain/(loss) on Piedmont's interest rate derivatives, including previously settled forward starting interest rate swaps, that was recorded in OCI and the accompanying consolidated statements of income as a component of interest expense for the years ended December 31, 2020, 2019, and 2018, respectively, was as follows (in thousands):

Interest Rate Swaps in Cash Flow Hedging Relationships:	2020		2019		2018
Amount of gain/(loss) recognized in OCI	$	(26,794)	$	(5,659)	$	692
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	$	(1,727)	$	1,836	$	1,558
Amount of loss recognized on derivatives reclassified from OCI into Loss on Extinguishment of Debt	$	—	$	—	$	(1,258)
Total amount of Interest Expense presented in the consolidated statements of income	$	(54,990)	$	(61,594)	$	(61,023)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income	$	(9,336)	$	—	$	(1,680)

Piedmont estimates that approximately $2.9 million will be reclassified from OCI as an increase to interest expense over the next twelve months. Piedmont did not recognize any hedge ineffectiveness on its cash flow hedges during the three years ended December 31, 2020.

See Note 6 for fair value disclosures of Piedmont's derivative instruments.

Credit-risk-related Contingent Features

Piedmont has agreements with its derivative counterparties that contain a provision whereby if Piedmont defaults on any of its indebtedness, including a default where repayment of the indebtedness has not been accelerated by the lender, then Piedmont could also be declared in default on its derivative obligations. If Piedmont were to breach any of the contractual provisions of the derivative contracts, it could be required to settle its liability obligations under the agreements at their termination value of the estimated fair values plus accrued interest, or approximately $10.1 million as of December 31, 2020. Additionally, Piedmont has rights of set-off under certain of its derivative agreements related to potential termination fees and amounts payable under the agreements, if a termination were to occur.

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Fair Value Measurements of Financial Instruments

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements of Financial Instruments

Fair Value Measurements of Financial Instruments

Piedmont considers its cash and cash equivalents, tenant receivables, notes receivable, restricted cash and escrows, accounts payable and accrued expenses, interest rate swap agreements, and debt to meet the definition of financial instruments. The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of December 31, 2020 and 2019, respectively (in thousands):

	December 31, 2020					December 31, 2019
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents (1)	$	7,331	$	7,331	Level 1	$	13,545	$	13,545	Level 1
Tenant receivables, net (1)	$	8,448	$	8,448	Level 1	$	8,226	$	8,226	Level 1
Notes receivable	$	118,500	$	118,500	Level 2	$	—	$	—	Level 1
Restricted cash and escrows (1)	$	1,883	$	1,883	Level 1	$	1,841	$	1,841	Level 1
Liabilities:
Accounts payable and accrued expenses (1)	$	45,345	$	45,345	Level 1	$	50,049	$	50,049	Level 1
Interest rate swaps	$	9,834	$	9,834	Level 2	$	5,121	$	5,121	Level 2
Debt, net	$	1,622,004	$	1,690,377	Level 2	$	1,481,404	$	1,536,687	Level 2

(1)For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to its short-term maturity.

Piedmont's notes receivable were carried at book value as of December 31, 2020, and were issued in conjunction with the sale of properties to an unrelated third-party buyer on October 28, 2020 (see Note 13). Piedmont has evaluated the facts and circumstances present at the time of issuance of the notes receivable as compared to those same circumstances as of December 31, 2020 and determined that the book value approximates its estimated fair value.

Piedmont's debt was carried at book value as of December 31, 2020 and 2019; however, Piedmont's estimate of its fair value is disclosed in the table above. Piedmont uses widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the debt facilities, including the period to maturity of each instrument, and uses observable market-based inputs for similar debt facilities which have transacted recently in the market. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). Scaling adjustments are made to these inputs to make them applicable to the remaining life of Piedmont's outstanding debt. Piedmont has not changed its valuation technique for estimating the fair value of its debt.

Piedmont’s interest rate swap agreements presented above, and as further discussed in Note 5, are classified as “Interest rate swap” liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of December 31, 2020 and 2019. The valuation of these derivative instruments was determined using widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the derivatives, including the period to maturity of each instrument, and uses observable market-based inputs, including interest rate curves and implied volatilities. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). In addition, Piedmont considered both its own and the respective counterparties’ risk of nonperformance in determining the estimated fair value of its derivative financial instruments by estimating the current and potential future exposure under the derivative financial instruments that both Piedmont and the counterparties were at risk for as of the valuation date. The credit risk of Piedmont and its counterparties was factored into the calculation of the estimated fair value of the interest rate swaps; however, as of December 31, 2020 and 2019, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs used to determine the estimated fair values of its derivative financial instruments are not significant to the fair value measurements in their entirety, and does not consider any of its derivative financial instruments to be Level 3 assets or liabilities.

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Impairment Loss on Real Estate Assets

12 Months Ended

Dec. 31, 2020

Real Estate [Abstract]

Impairment Loss on Real Estate Assets

Impairment Loss on Real Estate Assets

Piedmont recorded the following impairment losses on real estate assets for the years ended December 31, 2020, 2019, and 2018 (in thousands):

	2020		2019		2018
The Dupree(1)	$	—	$	1,953	$	—
600 Corporate Drive(2)	—		7,000		—
Total impairment loss on real estate assets	$	—	$	8,953	$	—

(1)The impairment loss recognized was the result of reducing the asset's carrying value to reflect its fair value, estimated based on the net contract price negotiated with a unrelated, third-party purchaser.

(2)Management shortened the intended hold period for the property, and in doing so determined that the carrying value would not be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. As a result, Piedmont recognized a loss on impairment calculated as the difference between the carrying value of the asset and the estimated fair value less costs to sell. The estimated fair value was determined using widely available market quotations for similar properties, as well as discounted cash flow analysis. Key assumptions used in the analysis were a capitalization and discount rate of 14% and estimated selling costs of 0.75%.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments Under Existing Lease Agreements

As a recurring part of its business, Piedmont is typically required under its executed lease agreements to fund tenant improvements, leasing commissions, and building improvements. In addition, certain agreements contain provisions that require Piedmont to issue corporate or property guarantees to provide funding for capital improvements or other financial obligations. As of December 31, 2020, Piedmont had one individually significant unrecorded tenant allowance commitment of approximately $38.2 million for the approximately 20-year, approximately 520,000 square foot renewal and expansion on behalf of Piedmont's largest tenant, the State of New York at the 60 Broad Street building in New York City. This commitment will be capitalized as the related expenditures are incurred.

Contingencies Related to Tenant Audits/Disputes

Certain lease agreements include provisions that grant tenants the right to engage independent auditors to audit their annual operating expense reconciliations. Such audits may result in different interpretations of language in the lease agreements from that made by Piedmont, which could result in requests for refunds of previously recognized tenant reimbursement revenues, resulting in financial loss to Piedmont. There were no reductions in rental and reimbursement revenues related to such tenant audits/disputes during the year ended December 31, 2020. However, Piedmont recorded net recoveries of previously recognized reductions in rental and reimbursement revenues of $0.6 million related to tenant audits/disputes during the year ended December 31, 2019, and approximately $0.5 million of reductions in rental and reimbursement revenues related to such tenant audits/disputes during the years ended December 31, 2018.

Contingencies Related to the COVID-19 Pandemic

During the year ended December 31, 2020, Piedmont continued to experience the repercussions of the COVID-19 pandemic including forced closures and other restrictions that have had a material adverse effect on the global economy and the regional U.S. economies in which Piedmont operates. Specifically, the pandemic and its impact on the U.S., as well as the global economy, has negatively impacted the trading price of Piedmont's common stock and some of Piedmont's tenants' ability to pay their rent. We have entered into approximately 70 agreements with various tenants that primarily deferred approximately $7.1 million of 2020 rent payments into fourth quarter of 2020 or the year ending December 31, 2021. Piedmont has already collected approximately $1.3 million of the $7.1 million deferred. Nonetheless, Piedmont has established an approximately $4.6 million general reserve for potential collectibility issues. There can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due.

Piedmont’s financial statements as of and for the year ended December 31, 2020 have been prepared in light of these circumstances. Piedmont has continued to follow the policies described in Note 2 above, including those related to impairment of real estate assets and goodwill and estimates of the likelihood of collectibility of amounts due from tenants.

While the long-term impacts of the COVID-19 pandemic remain unknown, a prolonged economic downturn or recession resulting from the pandemic could adversely affect many of Piedmont's tenants which could, in turn, adversely impact Piedmont's business, financial condition and results of operations. Piedmont will continue to work closely with its tenants and address their concerns on a case-by-case basis, seeking solutions that address immediate cash flow interruptions while maintaining long term lease obligations.

Litigation

Piedmont is from time to time a party to legal proceedings, which arise in the ordinary course of its business. None of these ordinary course legal proceedings are reasonably likely to have a material adverse effect on results of operations or financial condition. Piedmont is not aware of any such legal proceedings contemplated by governmental authorities.

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Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party TransactionsDuring the year ended December 31, 2019, Piedmont entered into employment or retirement agreements with certain of its current and former executive officers as more fully described in its Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019. Further, during the years ended December 31, 2020, 2019, and 2018, Piedmont recognized approximately $0.1 million, $0.2 million, and $0.3 million, respectively, of expense related to a consulting agreement with its former Chief Investment Officer. There were no other related-party transactions during the three years ended December 31, 2020.

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Stock Based Compensation

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Stock Based Compensation

Stock Based Compensation

Deferred Stock Awards

The Compensation Committee of Piedmont's Board of Directors has periodically granted deferred stock award units to all of Piedmont's employees and independent directors. Most employee awards are time-vested and typically vest ratably over a multi-year period and independent director awards vest over one year.

Certain management employees' long-term equity incentive program is split equally between the time-vested award units and a multi-year performance share program whereby the actual awards are contingent upon Piedmont's total stockholder return ("TSR") relative to a peer group of office REITs' TSR. The long-term equity incentives for these certain employees, as well as the peer group, is predetermined by the Board of Directors, advised by an outside compensation consultant. Any shares earned are awarded at the end of the multi-year performance period and vest upon award. The fair values of the multi-year performance share awards are estimated using a Monte Carlo valuation method.

A rollforward of Piedmont's equity based award activity for the year ended December 31, 2020 is as follows:

	Shares	Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2019	1,045,020	$	25.15
Deferred Stock Awards Granted	242,586	$	22.39
Increase in Estimated Potential Share Awards based on TSR Performance	111,545	$	26.97
Performance Stock Awards Vested	(153,368)	$	30.45
Deferred Stock Awards Vested	(229,274)	$	21.05
Deferred Stock Awards Forfeited	(6,979)	$	21.82
Unvested and Potential Stock Awards as of December 31, 2020	1,009,530	$	24.37

The following table provides additional information regarding stock award activity during the years ended 2020, 2019, and 2018 (in thousands except for per share amounts):

	2020		2019		2018
Weighted-Average Grant Date Fair Value of Deferred Stock Granted During the Period	$	22.39	$	21.02	$	17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	4,826	$	8,658	$	6,378
Share-based Liability Awards Paid During the Period (1)	$	4,116	$	6,683	$	2,947

(1)Amounts reflect the issuance of performance share awards related to the 2017-19, 2016-18, and 2015-17 Performance Share Plans during the years ended December 31, 2020, 2019, and 2018 respectively, as well as performance share award liabilities settled in cash in July 2019 for retirement and separation associated with the senior management transition on June 30, 2019.

A detail of Piedmont’s outstanding employee restricted stock awards as of December 31, 2020 is as follows:

Date of grant	Type of Award	Net  Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested and Potential Shares as of December 31, 2020
May 17, 2018	Deferred Stock Award	250,627	$	17.84	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 17, 2019, 2020, and 2021, respectively.	52,740
May 17, 2018	Fiscal Year 2018-2020 Performance Share Program	—	$	23.52	Shares awarded, if any, will vest immediately upon determination of award in 2021.	200,674	(2)
May 3, 2019	Deferred Stock Award	274,904	$	21.04	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 3, 2020, 2021, and 2022, respectively.	133,900
May 3, 2019	Fiscal Year 2019-2021 Performance Share Program	—	$	29.43	Shares awarded, if any, will vest immediately upon determination of award in 2022.	224,900	(2)
February 19, 2020	Deferred Stock Award	178,181	$	24.41	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on February 19, 2021, 2022, and 2023, respectively.	143,605
March 19, 2020	Fiscal Year 2020-2022 Performance Share Program	—	$	25.83	Shares awarded, if any, will vest immediately upon determination of award in 2023.	207,931	(2)
May 13, 2020	Deferred Stock Award-Board of Directors	45,780	$	13.76	Of the shares granted, 100% will vest by May 13, 2021.	45,780
Total						1,009,530

(1)Amounts reflect the total grant to employees and independent directors, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through December 31, 2020.

(2)Estimated based on Piedmont's cumulative TSR for the respective performance period through December 31, 2020. Share estimates are subject to change in future periods based upon Piedmont's relative performance compared to its peer group of office REITs' TSR.

During the years ended December 31, 2020, 2019, and 2018, Piedmont recognized approximately $9.7 million, $15.1 million and $9.7 million of compensation expense related to stock awards, of which approximately $8.5 million, $13.6 million and $8.6 million, related to the amortization of unvested shares, respectively. During the year ended December 31, 2020, a total of 245,875 shares were issued to employees, net of shares surrendered for income tax obligations. As of December 31, 2020, approximately $6.1 million of unrecognized compensation cost related to unvested, annual restricted stock awards remained, which Piedmont will record in its consolidated statements of income over a weighted-average vesting period of approximately one year.

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Earnings Per Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

There are no adjustments to “Net income applicable to Piedmont” for the diluted earnings per share computations.

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including unvested restricted stock awards. Diluted weighted average number of common shares reflects the potential dilution

under the treasury stock method that would occur if the remaining unvested restricted stock awards vested and resulted in additional common shares outstanding. Unvested restricted stock awards which are determined to be anti-dilutive are not included in the calculation of diluted weighted average common shares. For each of the years ended December 31, 2020, 2019, and 2018, Piedmont excluded approximately 289,681, 156,317, and 170,128 of such anti-dilutive shares, respectively.

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively (in thousands):

	2020	2019	2018
Weighted-average common shares—basic	125,730	125,709	130,161
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	374	473	475
Weighted-average common shares—diluted	126,104	126,182	130,636

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Operating Leases

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Operating Leases

Operating Leases

Piedmont’s real estate assets are leased to tenants under operating leases for which the terms vary, including certain provisions to extend the lease term, options for early terminations subject to specified penalties, and other terms and conditions as negotiated. Piedmont retains substantially all of the risks and benefits of ownership of the real estate assets leased to tenants. Amounts required as security deposits vary depending upon the terms of the respective leases and the creditworthiness of the tenant; however, generally they are not significant. Exposure to credit risk is limited to the extent that tenant receivables exceed this amount. Security deposits liabilities related to tenant leases are included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets.

The future minimum rental income from Piedmont’s investment in real estate assets under non-cancelable operating leases as of December 31, 2020 is presented below (in thousands):

Years ending December 31:
2021	$	378,807
2022	367,261
2023	331,195
2024	290,377
2025	244,376
Thereafter	1,134,705
Total	$	2,746,721

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively, as follows (in thousands):

	2020		2019		2018
Fixed payments	$	433,841	$	418,245	$	411,667
Variable payments	86,112		93,660		92,743
Total Rental and Tenant Reimbursement Revenue	$	519,953	$	511,905	$	504,410

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. For both the years ended December 31, 2020 and December 31, 2019, Piedmont's right to use asset and corresponding lease liability is approximately $0.2 million, using Piedmont's incremental borrowing rate as the lease discount rate. For both the years ended December 31, 2020 and December 31, 2019, Piedmont recognized approximately $0.1 million of operating lease costs. As of December 31, 2020, the weighted-average lease term of Piedmont's right of use assets is 2 years, and the weighted-average discount rate is 1.60%.

Operating Leases

Operating Leases

Piedmont’s real estate assets are leased to tenants under operating leases for which the terms vary, including certain provisions to extend the lease term, options for early terminations subject to specified penalties, and other terms and conditions as negotiated. Piedmont retains substantially all of the risks and benefits of ownership of the real estate assets leased to tenants. Amounts required as security deposits vary depending upon the terms of the respective leases and the creditworthiness of the tenant; however, generally they are not significant. Exposure to credit risk is limited to the extent that tenant receivables exceed this amount. Security deposits liabilities related to tenant leases are included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets.

The future minimum rental income from Piedmont’s investment in real estate assets under non-cancelable operating leases as of December 31, 2020 is presented below (in thousands):

Years ending December 31:
2021	$	378,807
2022	367,261
2023	331,195
2024	290,377
2025	244,376
Thereafter	1,134,705
Total	$	2,746,721

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively, as follows (in thousands):

	2020		2019		2018
Fixed payments	$	433,841	$	418,245	$	411,667
Variable payments	86,112		93,660		92,743
Total Rental and Tenant Reimbursement Revenue	$	519,953	$	511,905	$	504,410

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. For both the years ended December 31, 2020 and December 31, 2019, Piedmont's right to use asset and corresponding lease liability is approximately $0.2 million, using Piedmont's incremental borrowing rate as the lease discount rate. For both the years ended December 31, 2020 and December 31, 2019, Piedmont recognized approximately $0.1 million of operating lease costs. As of December 31, 2020, the weighted-average lease term of Piedmont's right of use assets is 2 years, and the weighted-average discount rate is 1.60%.

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Property Dispositions and Assets Held for Sale

12 Months Ended

Dec. 31, 2020

Discontinued Operations and Disposal Groups [Abstract]

Property Dispositions and Assets Held for Sale

Property Dispositions and Assets Held for Sale

Property Dispositions

None of Piedmont's property dispositions during the three years ended December 31, 2020 met the criteria to be reported as discontinued operations. The operational results and gain on sale of real estate assets are presented as continuing operations in the accompanying consolidated statements of income, unless otherwise indicated below. Details of such properties sold are presented below (in thousands):

Buildings Sold	Location	Date of Sale	Gain on Sale of Real Estate Assets			Net Sales Proceeds
2017 Disposition Portfolio	Various(1)	January 4, 2018	$	45,275		$	419,644	(2)
800 North Brand Boulevard	Glendale, California	November 29, 2018	$	30,416		$	155,583
One Independence Square	Washington, D.C.	February 28, 2019	$	33,176		$	163,623
The Dupree	Atlanta, Georgia	September 4, 2019	$	—	(3)	$	12,631
500 West Monroe Street	Chicago, Illinois	October 28, 2019	$	157,739		$	408,851
1901 Market Street	Philadelphia, Pennsylvania	June 25, 2020	$	191,030		$	350,805
New Jersey Portfolio	Various(4)	October 28, 2020	$	14,636		$	9,289	(5)

(1)The 2017 Disposition Portfolio is comprised of the following properties: Desert Canyon 300 in Phoenix, Arizona; Windy Point I & II in Schaumburg, Illinois; 2300 Cabot Drive in Lisle, Illinois; 1075 West Entrance Drive in Auburn Hills, Michigan; Auburn Hills Corporate Center in Auburn Hills, Michigan; 5301 Maryland Way in Brentwood, Tennessee; Suwanee Gateway One in Suwanee, Georgia; 5601 Hiatus Road in Tamarac, Florida; Piedmont Pointe I & II in Bethesda, Maryland; 1200 Crown Colony Drive in Quincy, Massachusetts; 2001 N.W. 64th Street in Fort Lauderdale, Florida, and 2120 West End Avenue in Nashville, Tennessee.

(2)Piedmont accepted a secured $3.2 million promissory note from the buyer for a portion of the sales price, which was subsequently paid in full by the borrower.

(3)As discussed in Note 7 above, Piedmont recognized an impairment loss prior to the sale of the property.

(4)The New Jersey Portfolio is comprised of the following three properties: 200 Bridgewater Crossing in Bridgewater, New Jersey; 400 Bridgewater Crossing in Bridgewater, New Jersey; and 600 Corporate Drive in Lebanon, New Jersey.

(5)Piedmont accepted a secured $102.8 million promissory note from the buyer, which matures on October 31, 2023 and bears interest at 6% per annum. The note may not be prepaid without penalty until January 2022, and may be extended for three available one-year periods upon payment of applicable extension fees. Further, Piedmont also accepted a mezzanine note for $15.7 million, bearing interest at 13.55% per annum, which may be repaid any time before the October 31, 2023 maturity without penalty.

Assets Held for Sale

As of December 31, 2020, no properties met the criteria for held for sale classification; however, as of March 31, 2020, the 1901 Market Street building in Philadelphia, Pennsylvania, which sold June 2020, met the criteria for held for sale classification. Consequently its assets and liabilities as of December 31, 2019 were presented as held for sale for comparability in the accompanying consolidated balance sheets.

Details of amounts held for sale as of December 31, 2020 and 2019 are presented below (in thousands):

	December 31, 2020		December 31, 2019
Real estate assets held for sale, net:
Land	$	—	$	20,829
Building and improvements, less accumulated depreciation of $0 and $66,823 as of December 31, 2020, and 2019, respectively	—		112,287
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of December 31, 2020 and 2019, respectively	—		6,574
Total real estate assets held for sale, net	$	—	$	139,690
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of December 31, 2020 and 2019, respectively	—		9,425
Total other assets held for sale, net	$	—	$	28,201
Other liabilities held for sale, net:
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of December 31, 2020 and 2019, respectively	$	—	$	7,657

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Supplemental Disclosures for the Statement of Consolidated Cash Flows

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures for the Statement of Consolidated Cash Flows

Supplemental Disclosures for the Statement of Consolidated Cash Flows

Certain noncash investing and financing activities for the years ended December 31, 2020, 2019, and 2018 (in thousands) are outlined below:

	2020		2019		2018
Accrued capital expenditures and deferred lease costs	$	20,103	$	38,366	$	10,854
Change in accrued dividends and discount on dividend reinvestments	$	(744)	$	(545)	$	(74,828)
Change in accrued share repurchases as part of an announced plan	$	685	$	(4,417)	$	3,140
Notes receivable issued in conjunction with property dispositions	$	118,500	$	—	$	—

The following table provides a reconciliation of cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statement of cash flows for the years ended December 31, 2020, 2019, and 2018 to the consolidated balance sheets for the respective period (in thousands):

	2020		2019		2018
Cash and cash equivalents, beginning of period	$	13,545	$	4,571	$	7,382
Restricted cash and escrows, beginning of period	1,841		1,463		1,373
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows, beginning of period	$	15,386	$	6,034	$	8,755
Cash and cash equivalents, end of period	$	7,331	$	13,545	$	4,571
Restricted cash and escrows, end of period	1,883		1,841		1,463
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows, end of period	$	9,214	$	15,386	$	6,034

Amounts in restricted cash and escrows typically represent escrow accounts for the payment of real estate taxes which are required under certain of Piedmont's debt agreements; earnest money deposited by a buyer to secure the purchase of one of our properties; or security or utility deposits held for tenants as a condition of their lease agreement.

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Income Taxes

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Piedmont’s income tax basis net income for the years ended December 31, 2020, 2019, and 2018, is calculated as follows (in thousands):

	2020		2019		2018
GAAP basis financial statement net income	$	232,688	$	229,261	$	130,296
Increase/(decrease) in net income resulting from:
Depreciation and amortization expense recognized for financial reporting purposes in excess of amounts recognized for income tax purposes	73,784		10,381		54,420
Rental income accrued for income tax purposes less than amounts for financial reporting purposes	(25,726)		(34,804)		(9,681)
Net amortization of above/below-market lease intangibles for income tax purposes in excess of amounts for financial reporting purposes	(11,625)		(7,698)		(7,453)
Gain on disposal of property for financial reporting purposes less than/(in excess of) amounts for income tax purposes	(222,037)		(85,463)		(36,241)
Taxable income or loss of Piedmont Washington Properties, Inc., in excess of/(less than) amount for financial reporting purposes	1,345		411		(2,089)
Other expenses, including impairment loss on real estate assets, for financial reporting purposes in excess of/ (less than) amounts for income tax purposes	10,970		23,127		(37,394)
Taxable income for POH in excess of/(less than) amount for financial reporting purposes	1,499		175		(64)
Income tax basis net income, prior to dividends paid deduction	$	60,898	$	135,390	$	91,794

For income tax purposes, dividends to common stockholders are characterized as ordinary income, capital gains, or as a return of a stockholder’s invested capital. The composition of Piedmont’s distributions per common share is presented below:

	2020		2019		2018
Ordinary income	91.91	%	29.82	%	100.00	%
Return of capital	8.09	%	—	%	—	%
Capital gains	—	%	70.18	%	—	%
	100	%	100	%	100	%

Piedmont has $0 and approximately $1.0 million of uncertain tax positions included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets as of December 31, 2020 and 2019, respectively. Piedmont recognized approximately $1.0 million of recoveries of previously recorded estimated accrued interest and penalties for the year ended December 31, 2020, and approximately $1.4 million of such recoveries for both the years ended December 31, 2019 and 2018. The tax years 2017 to 2019 remain open to examination by various federal and state taxing authorities.

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Quarterly Results (unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results (unaudited)

Quarterly Results (unaudited)

A summary of the unaudited quarterly financial information for the years ended December 31, 2020 and 2019, is presented below (in thousands, except per-share data):

	2020
	First		Second		Third		Fourth
Revenues	$	137,171	$	134,631	$	131,693	$	131,529
Gain/(loss) on sale of real estate assets	$	3	$	191,369	$	(340)	$	14,634
Net income	$	8,711	$	192,426	$	8,940	$	22,608
Net income applicable to Piedmont	$	8,709	$	192,427	$	8,943	$	22,609
Basic earnings per share	$	0.07	$	1.53	$	0.07	$	0.18
Diluted earnings per share	$	0.07	$	1.52	$	0.07	$	0.18
Dividends declared per share	$	0.21	$	0.21	$	0.21	$	0.21

	2019
	First		Second		Third		Fourth
Revenues	$	132,936	$	130,668	$	135,421	$	134,153
Gain on sale of real estate assets	$	37,887	$	1,451	$	32	$	157,640
Net income	$	50,209	$	8,152	$	8,419	$	162,476
Net income applicable to Piedmont	$	50,208	$	8,153	$	8,422	$	162,478
Basic and diluted earnings per share	$	0.40	$	0.06	$	0.07	$	1.29
Dividends declared per share	$	0.21	$	0.21	$	0.21	$	0.21

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Segment Information

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Segment Information

Segment Information

Piedmont’s accelerated disposition program has narrowed the geographic footprint of the portfolio, with a concentration on Sunbelt properties. During the year ended December 31, 2020, Piedmont disposed of its only asset in Philadelphia, Pennsylvania and its remaining assets in New Jersey (see Note 13). As a result of this concentration of Piedmont's portfolio, the chief operating decision maker ("CODM"), who is Piedmont's President and Chief Executive Officer, began to evaluate Piedmont's portfolio and assess the ongoing operations and performance of its properties utilizing the following geographic segments: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York. These operating segments are also Piedmont’s reportable segments. Additionally, as of December 31, 2020, Piedmont owns two properties in Houston and one property in Chicago that do not meet the definition of an operating or reportable segment as the CODM does not regularly review these properties for purposes of allocating resources or assessing performance, and Piedmont does not maintain a significant presence or anticipate further investment in these markets. These three properties are included in "Corporate and other" below. During the periods presented, there have been no material intersegment transactions. The accounting policies of the reportable segments are the same as Piedmont.

NOI by geographic segment is the primary performance measure reviewed by the CODM to assess operating performance and is calculated by deducting operating expenses from revenues. Revenues include lease revenues and other property income; and operating expenses include property operating costs. The NOI consists only of revenues and expenses directly related to real estate rental operations. NOI reflects property acquisitions and dispositions, occupancy levels, rental rate increases or decreases, and the recoverability of operating expenses. NOI, as Piedmont calculates it, may not be directly comparable to similarly titled, but differently calculated, measures for other REITs.

Asset value information and capital expenditures by segment are not reported because the CODM does not use these measures to assess performance.

The following table presents revenues included in NOI by geographic reportable segments (in thousands):

	Years Ended December 31,
	2020		2019		2018
Dallas	$	101,727	$	55,346	$	54,382
Atlanta	95,403		75,699		62,282
Washington, D.C.	59,760		64,481		68,404
Minneapolis	61,465		64,318		57,711
Boston	61,338		64,739		54,648
Orlando	54,886		57,084		55,440
New York	69,827		75,587		71,733
Total reportable segments	504,406		457,254		424,600
Corporate and other	30,618		75,924		101,367
Total Revenues	$	535,024	$	533,178	$	525,967

The following table presents NOI by geographic reportable segments (in thousands):

	Years Ended December 31,
	2020		2019		2018
Dallas	$	59,845	$	29,438	$	29,286
Atlanta	60,276		47,287		38,660
Washington, D.C.	36,696		41,167		41,565
Minneapolis	33,588		35,610		30,402
Boston	41,722		44,016		37,887
Orlando	34,427		35,433		35,067
New York	38,990		44,036		40,622
Total reportable segments	305,544		276,987		253,489
Corporate and other	13,915		43,637		63,649
Total NOI	$	319,459	$	320,624	$	317,138

A reconciliation of Net income applicable to Piedmont to NOI is presented below (in thousands):

	Years Ended December 31,
	2020		2019		2018
Net income applicable to Piedmont	$	232,688	$	229,261	$	130,296
Management fee revenue (1)	(1,495)		(2,518)		(712)
Depreciation and amortization	203,869		182,682		171,252
Impairment loss on real estate assets	—		8,953		—
General and administrative expenses	27,464		37,895		29,713
Interest expense	54,990		61,594		61,023
Other income	(1,724)		(228)		(418)
Loss on extinguishment of debt	9,336		—		1,680
Gain on sale of real estate assets	(205,666)		(197,010)		(75,691)
Net loss applicable to noncontrolling interests	(3)		(5)		(5)
NOI	$	319,459	$	320,624	$	317,138

(1)Presented net of related operating expenses incurred to earn such management fee revenue. Such operating expenses are a component of property operating costs in the accompanying consolidated statements of income.

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Subsequent events

12 Months Ended

Dec. 31, 2020

Subsequent Events [Abstract]

Subsequent events

Subsequent Events

Declaration of Dividend for the First Quarter 2021

On February 2, 2021, the board of directors declared a dividend for the first quarter 2021 in the amount of $0.21 per share on its common stock to stockholders of record as of the close of business on February 26, 2021, payable on March 19, 2021.

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Schedule III - Real Estate and Accumulated Depreciation

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]

Schedule III - Real Estate and Accumulated Depreciation

Schedule III - Real Estate and Accumulated Depreciation

December 31, 2020

(dollars in thousands)

					Initial Cost to Piedmont				Gross Amount of Which Carried at December 31, 2020
Description(1)	Location	Ownership Percentage		Encumbrances	Land	Buildings and Improvements	Total(2)	Costs Capitalized Subsequent to Acquisition(3)	Land	Buildings and Improvements	Total(4)	Accumulated Depreciation and Amortization	Date of Construction	Date Acquired	Life on which Depreciation and Amortization in Latest Statements of Comprehensive Income is Computed  (in years)(5)
1430 ENCLAVE PARKWAY	Houston, TX	100	%	None	7,100	37,915	45,015	6,473	5,506	45,982	51,488	21,321	1994	12/21/2000	0	-	40
CRESCENT RIDGE II	Minnetonka, MN	100	%	None	7,700	45,154	52,854	12,363	8,021	57,196	65,217	28,532	2000	12/21/2000	0	-	40
90 CENTRAL STREET	Boxborough, MA	100	%	None	3,642	29,497	33,139	2,794	3,642	32,291	35,933	14,670	2001	5/3/2002	0	-	40
6031 CONNECTION DRIVE	Irving, TX	100	%	None	3,157	43,656	46,813	8,454	3,157	52,110	55,267	22,979	1999	8/15/2002	0	-	40
6021 CONNECTION DRIVE	Irving, TX	100	%	None	3,157	42,662	45,819	11,562	3,157	54,224	57,381	25,875	2000	8/15/2002	0	-	40
6011 CONNECTION DRIVE	Irving, TX	100	%	None	3,157	29,034	32,191	18,524	3,157	47,558	50,715	15,583	1999	8/15/2002	0	-	40
US BANCORP CENTER	Minneapolis, MN	100	%	None	11,138	175,629	186,767	31,142	11,138	206,771	217,909	91,546	2000	5/1/2003	0	-	40
GLENRIDGE HIGHLANDS TWO	Atlanta, GA	100	%	None	6,662	69,031	75,693	(15,253)	6,662	53,778	60,440	26,802	2000	8/1/2003	0	-	40
400 VIRGINIA AVE	Washington, DC	100	%	None	22,146	49,740	71,886	2,375	22,146	52,115	74,261	21,865	1985	11/19/2003	0	-	40
4250 NORTH FAIRFAX DRIVE	Arlington, VA	100	%	None	13,636	70,918	84,554	16,725	13,636	87,643	101,279	36,852	1998	11/19/2003	0	-	40
1225 EYE STREET	Washington, DC	98.1	%	None	21,959	47,602	69,561	9,758	21,959	57,360	79,319	25,963	1986	11/19/2003	0	-	40
1201 EYE STREET	Washington, DC	98.6	%	None	31,985	63,139	95,124	9,768	31,985	72,907	104,892	29,381	2001	11/19/2003	0	-	40
60 BROAD STREET	New York, NY	100	%	None	32,522	168,986	201,508	43,190	60,708	183,990	244,698	62,826	1962	12/31/2003	0	-	40
1414 MASSACHUSETTS AVENUE	Cambridge, MA	100	%	None	4,210	35,821	40,031	(8,031)	4,365	27,635	32,000	11,819	1873	1/8/2004	0	-	40
ONE BRATTLE SQUARE	Cambridge, MA	100	%	None	6,974	64,940	71,914	(23,111)	7,113	41,690	48,803	18,286	1991	2/26/2004	0	-	40
3100 CLARENDON BOULEVARD	Arlington, VA	100	%	None	11,700	69,705	81,405	48,835	11,791	118,449	130,240	38,772	1987	12/9/2004	0	-	40
LAS COLINAS CORPORATE CENTER I	Irving, TX	100	%	None	3,912	18,830	22,742	(3,316)	2,543	16,883	19,426	6,775	1998	8/31/2006	0	-	40
LAS COLINAS CORPORATE CENTER II	Irving, TX	100	%	None	4,496	29,881	34,377	(2,047)	2,543	29,787	32,330	12,272	1998	8/31/2006	0	-	40

					Initial Cost				Gross Amount of Which Carried at December 31, 2020
Description(1)	Location	Ownership Percentage		Encumbrances	Land	Buildings and Improvements	Total(2)	Costs Capitalized Subsequent to Acquisition(3)	Land	Buildings and Improvements	Total(4)	Accumulated Depreciation and Amortization	Date of Construction	Date Acquired	Life on which Depreciation and Amortization in Latest Statements of Comprehensive Income is Computed  (in years)(5)
TWO PIERCE PLACE	Itasca, IL	100	%	None	4,370	70,632	75,002	12,528	8,156	79,374	87,530	25,018	1991	12/7/2006	0	-	40
ONE MERIDIAN CROSSINGS	Richfield, MN	100	%	None	2,919	24,398	27,317	621	2,919	25,019	27,938	7,170	1997	10/1/2010	0	-	40
TWO MERIDIAN CROSSINGS	Richfield, MN	100	%	None	2,661	25,742	28,403	839	2,661	26,581	29,242	7,636	1998	10/1/2010	0	-	40
THE MEDICI	Atlanta, GA	100	%	None	1,780	11,510	13,290	5,632	1,780	17,142	18,922	6,325	2008	6/7/2011	0	-	40
225 PRESIDENTIAL WAY	Boston, MA	100	%	None	3,626	36,916	40,542	(5,419)	3,612	31,511	35,123	7,363	2001	9/13/2011	0	-	40
235 PRESIDENTIAL WAY	Boston, MA	100	%	None	4,154	44,048	48,202	(6,851)	4,138	37,213	41,351	8,659	2000	9/13/2011	0	-	40
400 TOWNPARK	Lake Mary, FL	100	%	None	2,570	20,555	23,125	5,634	2,570	26,189	28,759	8,063	2008	11/10/2011	0	-	40
ARLINGTON GATEWAY	Arlington, VA	100	%	None	36,930	129,070	166,000	917	36,930	129,987	166,917	27,497	2005	3/4/2013	0	-	40
5 & 15 WAYSIDE ROAD	Burlington, MA	100	%	None	7,190	55,445	62,635	6,463	7,190	61,908	69,098	14,471	1999 / 2001	3/22/2013	0	-	40
6565 MACARTHUR BOULEVARD	Irving, TX	100	%	None	4,820	37,767	42,587	726	4,820	38,493	43,313	8,203	1998	12/5/2013	0	-	40
ONE LINCOLN PARK	Dallas, TX	100	%	None	6,640	44,810	51,450	2,469	6,640	47,279	53,919	10,939	1999	12/20/2013	0	-	40
161 CORPORATE CENTER	Irving, TX	100	%	None	2,020	10,680	12,700	(467)	2,020	10,213	12,233	2,786	1998	12/30/2013	0	-	40
5 WALL STREET	Burlington, MA	100	%	27,610	9,560	50,276	59,836	(2,212)	9,560	48,064	57,624	8,813	2008	6/27/2014	0	-	40
1155 PERIMETER CENTER WEST	Atlanta, GA	100	%	None	5,870	66,849	72,719	5,879	5,870	72,728	78,598	12,934	2000	8/28/2014	0	-	40
500 TOWNPARK	Lake Mary, FL	100	%	None	2,147	21,925	24,072	4,092	2,147	26,017	28,164	3,522	2016	N/A	0	-	40
PARK PLACE ON TURTLE CREEK	Dallas, TX	100	%	None	4,470	38,048	42,518	4,117	4,470	42,165	46,635	7,564	1986	1/16/2015	0	-	40
80 CENTRAL STREET	Boxborough, MA	100	%	None	1,980	8,930	10,910	3,731	1,980	12,661	14,641	2,050	1988	7/24/2015	0	-	40
ENCLAVE PLACE	Houston, TX	100	%	None	1,890	60,094	61,984	35,319	1,890	95,413	97,303	10,591	2015	N/A	0	-	40
200 SOUTH ORANGE AVENUE	Orlando, FL	100	%	None	11,660	139,015	150,675	20,653	11,660	159,668	171,328	22,127	1988	11/4/2015	0	-	40
GALLERIA 300	Atlanta, GA	100	%	None	4,000	73,554	77,554	6,799	4,000	80,353	84,353	14,130	1987	11/4/2015	0	-	40

					Initial Cost								Gross Amount of Which Carried at December 31, 2020
Description(1)	Location	Ownership Percentage		Encumbrances	Land		Buildings and Improvements		Total(2)		Costs Capitalized Subsequent to Acquisition(3)		Land		Buildings and Improvements		Total(4)		Accumulated Depreciation and Amortization		Date of Construction	Date Acquired	Life on which Depreciation and Amortization in Latest Statements of Comprehensive Income is Computed  (in years)(5)
GLENRIDGE HIGHLANDS ONE	Atlanta, GA	100	%	None	5,960		50,013		55,973		3,381		5,960		53,394		59,354		8,796		1998	11/24/2015	0	-	40
CNL CENTER I	Orlando, FL	99	%	None	6,470		77,858		84,328		(20)		6,470		77,838		84,308		11,639		1999	8/1/2016	0	-	40
CNL CENTER II	Orlando, FL	99	%	None	4,550		55,609		60,159		862		4,550		56,471		61,021		9,869		2006	8/1/2016	0	-	40
ONE WAYSIDE ROAD	Boston, MA	100	%	None	6,240		57,124		63,364		(4,471)		6,240		52,653		58,893		6,455		1997 / 2008	8/10/2016	0	-	40
GALLERIA 200	Atlanta, GA	100	%	None	6,470		55,825		62,295		9,738		6,470		65,563		72,033		8,642		1984	10/7/2016	0	-	40
750 WEST JOHN CARPENTER FREEWAY	Irving, TX	100	%	None	7,860		36,303		44,163		2,914		7,860		39,217		47,077		8,445		1999	11/30/2016	0	-	40
NORMAN POINTE I	Bloomington, MN	100	%	None	4,358		22,322		26,680		3,917		4,360		26,237		30,597		3,384		2000	12/28/2017	0	-	40
501 WEST CHURCH STREET	Orlando, FL	100	%	None	2,805		28,119		30,924		—		2,805		28,119		30,924		3,396		2003	2/23/2018	0	-	40
9320 EXCELSIOR BOULEVARD	Hopkins, MN	100	%	None	3,760		35,289		39,049		(553)		3,707		34,789		38,496		4,531		2010	10/25/2018	0	-	40
25 BURLINGTON MALL ROAD	Burlington, MA	100	%	None	10,230		54,787		65,017		(2,543)		10,230		52,244		62,474		5,942		1987	12/12/2018	0	-	40
GALLERIA 100	Atlanta, GA	100	%	None	7,285		72,449		79,734		488		7,285		72,937		80,222		7,238		1982	5/6/2019	0	-	40
GALLERIA 400	Atlanta, GA	100	%	None	5,687		92,915		98,602		698		5,687		93,613		99,300		5,605		1999	8/23/2019	0	-	40
GALLERIA 600	Atlanta, GA	100	%	None	5,418		81,003		86,421		9		5,418		81,012		86,430		5,135		2002	8/23/2019	0	-	40
ONE GALLERIA TOWER	Dallas, TX	100	%	None	5,286		107,767		113,053		982		5,286		108,749		114,035		5,933		1982	2/12/2020	0		40
TWO GALLERIA TOWER	Dallas, TX	100	%	None	3,835		109,605		113,440		545		3,836		110,149		113,985		6,061		1985	2/12/2020	0		40
THREE GALLERIA TOWER	Dallas, TX	100	%	None	6,541		125,490		132,031		312		6,541		125,802		132,343		5,895		1991	2/12/2020	0		40
222 SOUTH ORANGE AVENUE	Orlando, FL	100	%	None	1,899		18,417		20,316		157		1,899		18,574		20,473		—		1959	10/29/2020	0		40
UNDEVELOPED LAND PARCELS (6)	Various	100	%	None	44,509		—		44,509		363		41,620		3,252		44,872		446		N/A	Various			N/A
Total—All Properties					$	459,673	$	3,143,299	$	3,602,972	$	288,454	$	484,466	$	3,406,960	$	3,891,426	$	835,392

(1)All of Piedmont's properties are office buildings, except for the separately described Undeveloped Land Parcels.

(2)Total initial cost excludes purchase price allocated to intangible lease origination costs and intangible lease liabilities.

(3)Includes improvements and carrying costs capitalized subsequent to acquisition, as well as reductions related to write-offs of fully depreciated/amortized capitalized assets and impairment losses on real estate assets.

(4)The net carrying value of Piedmont’s total assets for federal income tax purposes is approximately $3.3 billion.

(5)Piedmont’s assets are depreciated or amortized using the straight-line method over the useful lives of the assets by class. Generally, Tenant Improvements and Lease Intangibles are amortized over the lease term. Generally, Building Improvements are depreciated over 5 - 25 years, Land Improvements are depreciated over 20 - 25 years, and Buildings are depreciated over 40 years.

(6)Undeveloped Land Parcels includes land parcels that Piedmont may develop in the future.

Piedmont Office Realty Trust, Inc.

Schedule III - Real Estate and Accumulated Depreciation

December 31, 2020

(dollars in thousands)

	2020		2019		2018
Real Estate:
Balance at the beginning of the year	$	3,818,287	$	3,924,531	$	4,438,209
Additions to/improvements of real estate	493,760		406,832		206,442
Assets disposed	(393,231)		(452,672)		(675,692)
Assets impaired (1)	—		(8,953)		—
Write-offs of intangible assets (2)	(15,891)		(36,428)		(33,067)
Write-offs of fully depreciated/amortized assets	(11,499)		(15,023)		(11,361)
Balance at the end of the year	$	3,891,426	$	3,818,287	$	3,924,531
Accumulated Depreciation and Amortization:
Balance at the beginning of the year	$	875,777	$	907,937	$	1,053,467
Depreciation and amortization expense	142,762		132,600		128,456
Assets disposed	(155,757)		(113,309)		(229,558)
Write-offs of intangible assets (2)	(15,891)		(36,428)		(33,067)
Write-offs of fully depreciated/amortized assets	(11,499)		(15,023)		(11,361)
Balance at the end of the year	$	835,392	$	875,777	$	907,937

(1)Piedmont recognized an impairment loss on the Dupree building, as well as the 600 Corporate Drive building (see Note 7).

(2)Consists of write-offs of intangible lease assets related to lease restructurings, amendments, and terminations.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") of which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors.

Principles of Consolidation

All inter-company balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity and consequently the assets of the special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

Use of Estimates

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. The most significant of these estimates include the underlying cash flows and holding periods used in assessing impairment, judgements regarding the recoverability of goodwill, and the assessment of the collectibility of receivables. Future impacts of the COVID-19 pandemic on Piedmont and its tenants may affect these and other estimates used in the preparation of these financial statements. While Piedmont has made, what it believes to be, appropriate accounting estimates based on the facts and circumstances available as of the reporting date, actual results could materially differ from those estimates.

Real Estate Assets

Real Estate Assets

Piedmont classifies its real estate assets as long-lived assets held for use or as long-lived assets held for sale. Held for use assets are stated at cost, as adjusted for any impairment loss, less accumulated depreciation. Held for sale assets are carried at lower of depreciated cost or estimated fair value, less estimated costs to sell. Piedmont generally reclassifies assets as held for sale once a sales contract has been executed and earnest money has become non-refundable.

Amounts capitalized to real estate assets consist of the cost of acquisition or construction, any tenant improvements or major improvements, betterments that extend the useful life of the related asset, and transaction costs associated with the acquisition of an individual asset that does not qualify as a business combination. All repairs and maintenance are expensed as incurred. Additionally, Piedmont capitalizes interest while the development, or redevelopment, of a real estate asset is in progress.

Piedmont’s real estate assets are depreciated or amortized using the straight-line method over the following useful lives:

Buildings	40 years
Building improvements	5-25 years
Land improvements	20-25 years
Tenant allowances	Lease term
Furniture, fixtures, and equipment	3-10 years
Intangible lease assets	Lease term

Piedmont continually monitors events and changes in circumstances that could indicate that the carrying amounts of the real estate and related intangible assets of either operating properties or properties under construction in which Piedmont has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present, management assesses whether the respective carrying values will be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition for assets held for use, or from the estimated fair values, less costs to sell, for assets held for sale. In the event that the expected undiscounted future cash flows for assets held for use or the estimated fair value, less costs to sell, for assets held for sale do not exceed the respective asset carrying value, management adjusts such assets to the respective estimated fair values and recognizes an impairment loss. Estimated fair values are calculated based on the following information, depending upon availability, in order of preference: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of undiscounted cash flows, including estimated sales value (which is based on key assumptions such as estimated market rents, lease-up periods, estimated lease terms, and capitalization and discount rates) less estimated selling costs.

Fair Value of Assets and Liabilities of Acquired Properties

Fair Value of Assets and Liabilities of Acquired Properties

Upon the acquisition of real properties, Piedmont records the fair value of properties (plus any related acquisition costs) allocated based on relative fair value as tangible assets, consisting of land and building, and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases and the value of in-place leases, based on their estimated fair values. Substantially all of Piedmont's property acquisitions qualify as asset acquisitions under Accounting Standards Codification ("ASC") 805, Business Combinations.

The estimated fair values of the tangible assets of an acquired property are determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land and building based on management’s determination of the estimated fair value of these assets. Management relies on a sales comparison approach using closed land sales and listings in determining the land value, and determines the as-if-vacant estimated fair value of a property using methods similar to those used by independent appraisers. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In

estimating carrying costs, management includes real estate taxes, insurance, and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates the cost to execute similar leases including leasing commissions, legal, and other related costs.

The estimated fair values of above-market and below-market in-place leases are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) management’s estimate of market rates for the corresponding in-place leases, measured over a period equal to the remaining terms of the leases, taking into consideration the probability of renewals for any below-market leases. The capitalized above-market and below-market lease values are recorded as intangible lease assets or liabilities and amortized as an adjustment to rental revenues over the remaining terms of the respective leases.

The estimated fair values of in-place leases include an estimate of the direct costs associated with obtaining the acquired or "in place" tenant, estimates of opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease. The amount capitalized as direct costs associated with obtaining a tenant include commissions, tenant improvements, and other direct costs and are estimated based on management’s consideration of current market costs to execute a similar lease. These direct lease origination costs are included in deferred lease costs in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of opportunity costs is calculated using the contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. These lease intangibles are included in intangible lease assets in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases.

Cash and Cash Equivalents

Cash and Cash Equivalents

Piedmont considers all highly-liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents include cash and short-term investments. The majority of Piedmont’s cash and cash equivalents are held at major commercial banks and at times may exceed the Federal Deposit Insurance Corporation limit of $250,000. Short-term investments consist of investments in money market accounts stated at cost, which approximates estimated fair value, and available-for-sale securities resulting from Piedmont's non-qualified deferred compensation program carried at estimated fair value.

Tenant Receivables and Straight-line Rent Receivables

Tenant Receivables and Straight-line Rent ReceivablesTenant receivables are comprised of rental and reimbursement billings due from tenants, and straight-line rent receivables representing the cumulative amount of future adjustments necessary to present rental income on a straight-line basis. Effective January 1, 2019, Piedmont adopted ASC 842 Leases ("ASC 842"), as well as Accounting Standards Update ("ASU"), ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments—Credit Losses ("ASU 2018-19") which clarifies that operating lease receivables are within the scope of ASC 842; therefore, Piedmont has elected to evaluate the collectibility of its operating lease receivables on a tenant/lease-specific basis and, as of January 1, 2019, began recognizing changes in the collectibility assessment of its operating lease receivables as a reduction of rental and tenant reimbursement revenue, rather than as bad debt expense, a component of property operating costs.

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

As detailed above, Piedmont records contra-revenue adjustments for tenant/lease-specific changes in the collectibility assessments of its operating lease receivables as a reduction of rental and tenant reimbursement revenues in accordance with ASC 842. These charges reduce tenant and straight-line rent receivable to net realizable value upon recognition. However, during the year ended December 31, 2020, Piedmont also established a general reserve, with charges related to the establishment of this reserve recorded as a reduction of rental and tenant reimbursement revenues, and the balance of the reserve is disclosed as allowance for doubtful accounts in the accompanying consolidated balance sheets. Unlike tenant-specific adjustments recorded in accordance with ASC 842, the general reserve is for amounts that may become uncollectible in the future.

Restricted Cash and Escrows

Restricted Cash and Escrows

Restricted cash and escrows principally relate to the following types of items:

•escrow accounts held by lenders to pay future real estate taxes, insurance, debt service, and tenant improvements;

•net sales proceeds from property sales held by qualified intermediary for potential Section 1031 exchange;

•earnest money paid in connection with future acquisitions; and

•security and utility deposits paid by tenants per the terms of their respective leases.

Restricted cash and escrows are generally reclassified to other asset or liability accounts upon being used to purchase assets, satisfy obligations, or settle tenant obligations.

Prepaid Expenses and Other Assets

Prepaid Expenses and Other Assets

Prepaid expenses and other assets are primarily comprised of the following items:

•prepaid property taxes, insurance and operating costs;

•receivables which are unrelated to tenants, for example, insurance proceeds receivable from insurers related to casualty losses; and

•equipment, furniture and fixtures, and tenant improvements for Piedmont’s corporate office and property management office space, net of accumulated depreciation.

Prepaid expenses and other assets will be expensed as utilized or depreciated in the case of Piedmont's corporate assets. Balances without a future economic benefit are expensed as they are identified.

Goodwill

Goodwill

Goodwill is the excess of cost of an acquired entity over the amounts specifically assigned to assets acquired and liabilities assumed in purchase accounting for business combinations. In conjunction with Piedmont's change in segment reporting (see Note 17), Piedmont has reallocated its goodwill to each of its seven reporting units on the basis of relative fair value of each reporting unit compared to the total of all reporting units. Piedmont tests the carrying value of the goodwill assigned to each of its seven reporting units for impairment on an annual basis, or on an interim basis if an event occurs or circumstances change that would indicate that a material indicator of impairment exists. Such interim circumstances may include, but are not limited to, significant adverse changes in legal factors or in the general business climate, adverse action or assessment by a regulator, unanticipated competition, the loss of key personnel, or persistent declines in an entity’s stock price below carrying value of the entity. Piedmont first assesses qualitative factors to determine whether the existence of events or circumstances leads to a determination that a material indicator of impairment exists. If Piedmont concludes, after assessing the totality of events and circumstances during the qualitative analysis, that a material indicator does exist and that it is more likely than not that the goodwill balance in one or more reporting units is impaired, then Piedmont will recognize a goodwill impairment loss equal to the excess of the reporting unit’s carrying amount over its estimated fair value (not to exceed the total goodwill allocated to that reporting unit). There were no changes in the carrying amount of Piedmont's goodwill during the year ended December 31, 2020.

Interest Rate Derivatives

Interest Rate Derivatives

Piedmont periodically enters into interest rate derivative agreements to hedge its exposure to changing interest rates. As of December 31, 2020 and 2019, all of Piedmont's interest rate derivatives were designated as effective cash flow hedges and carried on the balance sheet at estimated fair value. Piedmont reassesses the effectiveness of its derivatives designated as cash flow hedges on a regular basis to determine if they continue to be highly effective and if the forecasted transactions remain highly probable. Piedmont does not use derivatives for trading or speculative purposes.

The changes in estimated fair value of interest rate swap agreements designated as effective cash flow hedges are recorded in other comprehensive income (“OCI”), and subsequently reclassified to earnings when the hedged transactions occur. The estimated fair value of the interest rate derivative agreement is recorded as interest rate derivative asset or as interest rate derivative liability in the accompanying consolidated balance sheets. Amounts received or paid under interest rate derivative agreements are recorded as reductions or additions to interest expense in the consolidated statements of income as incurred. Additionally, when Piedmont settles forward starting swap agreements, any gain or loss is recorded as accumulated other comprehensive income and is amortized to interest expense over the term of the respective notes on a straight line basis (which approximates the effective interest method). Further, Piedmont classifies cash flows from the settlement of hedging derivative instruments in the same category as the underlying exposure which is being hedged. Settlements resulting from the hedge of

Piedmont's exposure to interest rate changes are classified as operating cash flows in the accompanying consolidated statements of cash flows.

Deferred Lease Costs

Deferred Lease Costs

Deferred lease costs are comprised of costs and incentives incurred to acquire operating leases. In addition to direct costs, deferred lease costs also include intangible lease origination costs related to in-place leases acquired as part of a property acquisition. Prior to the adoption of ASC 842, Piedmont capitalized direct payroll costs incurred related to negotiating and executing specific leases of approximately $0.3 million for the year ended December 31, 2018. ASC 842 prohibited the capitalization of such costs beginning January 1, 2019.

Deferred lease costs are amortized on a straight-line basis over the terms of the related underlying leases in the accompanying consolidated statements of income as follows:

•Approximately $60.2 million, $50.3 million, and $43.6 million of deferred lease costs for the years ended December 31, 2020, 2019, and 2018, respectively, are included in amortization expense; and

•Approximately $3.4 million, $3.2 million, and $2.6 million, of deferred lease costs related to lease incentives granted to tenants for the years ended December 31, 2020, 2019, and 2018, respectively, was included as an offset to rental and tenant reimbursement revenue.

Upon receipt of a lease termination notice, Piedmont adjusts the amortization of any unamortized deferred lease costs to be recognized ratably over the revised remaining term of the lease after giving effect to the termination notice. If there is no remaining lease term and no other obligation to provide the tenant space in the property, then any unamortized tenant-specific costs are recognized immediately upon termination.

Debt

DebtWhen mortgage debt is assumed upon the acquisition of real property, Piedmont adjusts the loan to relative fair value with a corresponding adjustment to building and other intangible assets assumed as part of the purchase. The fair value adjustment is amortized to interest expense over the term of the loan using the effective interest method.Piedmont records premiums and discounts on debt issuances as an increase/decrease to the principal amount of the loan in the accompanying consolidated balance sheets, and amortizes such premiums or discounts as a component of interest expense over the life of the underlying loan facility using the effective interest method.Piedmont presents all debt issuance costs as an offset to the principal amount of debt in the accompanying consolidated balance sheets. Piedmont amortizes these costs to interest expense on a straight-line basis (which approximates the effective interest rate method) over the terms of the related financing arrangements.

Deferred Income and Revenue Recognition

Deferred income

Deferred income is primarily comprised of the following items:

•prepaid rent from tenants;

•tenant reimbursements related to operating expense or property tax expenses which may be due to tenants as part of an annual operating expense reconciliation; and

•tenant improvement allowance overages where Piedmont owns the underlying improvements.

Deferred income related to prepaid rents from tenants will be recognized as income in the period it is earned. Amounts related to operating expense reconciliations or property tax expense are relieved when the tenant's reconciliation is completed in accordance with the underlying lease, and payment is issued to the tenant. Tenant improvement allowance overages paid by the tenant, where Piedmont owns all of the underlying improvements, are recorded as deferred income and amortized on a straight-line basis into rental and tenant reimbursement revenue over the term of the respective leases.

Revenue Recognition

Piedmont's revenues consist of the following:

Rental and tenant reimbursement income - consists of revenue from leases with Piedmont's tenants, as well as reimbursements for services prescribed by such leases. Piedmont evaluates contracts at commencement to determine if the contract contains a lease. If a contract is determined to contain a lease, the lease is evaluated to determine whether it is an operating, sales-type, or a direct financing lease. All of Piedmont's leases where Piedmont is the lessor are for the lessee's use of space in Piedmont's commercial office properties and are classified as operating leases.

In most lease arrangements, Piedmont finances improvements to leased space and is deemed the owner of the tenant improvements. The determination of who owns the improvements, whether payments to tenants constitute lease incentives or tenant improvements, and the timing of revenue recognition requires the exercise of significant judgment based on the facts and circumstances of the specific lease arrangement and is not based on any one factor. When evaluating whether Piedmont or its tenant owns the improvements, management considers a number of factors, including, among other things:

•whether the tenant is obligated by the terms of the lease agreement to construct or install the leasehold improvements as a condition of the lease;

•whether the landlord can require the lessee to make specified improvements or otherwise enforce its economic rights to those assets;

•whether the tenant is required to provide the landlord with documentation supporting the cost of tenant improvements prior to reimbursement by the landlord;

•whether the landlord is obligated to fund cost overruns for the construction of leasehold improvements;

•whether the leasehold improvements are unique to the tenant or could reasonably be used by other parties; and

•whether the estimated economic life of the leasehold improvements is long enough to allow for a significant residual value that could benefit the landlord at the end of the lease term.

These tenant improvements are recorded as capital assets by Piedmont and depreciated, typically over the lease term. Payments made by the tenants for tenant improvements owned by Piedmont are treated as deferred revenues and amortized into rental and tenant reimbursement revenue over the lease term.

The timing of rental revenue recognition is largely dependent on our conclusion as to whether Piedmont, or its tenant, is the owner of tenant improvements at the leased property. When Piedmont owns the tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the finished space, which is typically when the improvements being recorded as Piedmont's asset are substantially complete. In some instances, Piedmont may cede control of the leased space to the tenant to be responsible for tenant-owned improvements for the space. In such arrangements, payments made by Piedmont to its tenant are treated as lease incentives, amortized as a reduction to rental and tenant reimbursement revenue over the lease term, which typically begins once the tenant takes possession of the unimproved space.

Lease payments are typically comprised of both fixed base rental payments and separately billed variable lease payments for reimbursement of services performed by Piedmont for the tenant as prescribed by the lease. Fixed base rental payments, as well as any fixed portion of reimbursement income, are recognized on a straight-line basis over the lease term. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred. Rents and tenant reimbursements collected in advance are recorded as deferred income in the accompanying consolidated balance sheets.

Property management fee revenue - consists of revenue earned by Piedmont related to operating and managing office properties owned by other third-parties. Such income is within the scope of ASC 606, Revenue from Contracts with Customers ("ASC 606"). Because property management services represent a performance obligation that are satisfied over the length of the contract, not at any specific point in time, and have the same measure of transfer (time elapsed), property management fee revenue is recognized over time. Any variable consideration transferred as part of these management agreements is recognized in the quarter that the underlying cash receipts are collected, consistent with the allocation objective of allocating the transaction price in an amount that depicts the amount of consideration to which Piedmont expects to be entitled in exchange for transferring the promised service to the customer.

Other property related income - consists of all other property related income from Piedmont's customers (tenants) that is not derived from a contract meeting the definition of a lease and is therefore also within the scope of ASC 606. Examples of such income include parking revenue and income from licenses with unrelated third-parties to place antennae and/or fiber optic cables in or on Piedmont's buildings. These services also represent a performance obligation that is satisfied over the length of

the contract, not at any specific point in time, and has the same measure of transfer (time elapsed); therefore, revenue related to these licenses is also recognized over time.

Gains on the sale of real estate assets, like all non-lease related revenue, are subject to a five-step model requiring that Piedmont identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue upon satisfaction of the performance obligations. In circumstances where Piedmont contracts to sell a property with material post-sale involvement, such involvement must be accounted for as a separate performance obligation in the contract and a portion of the sales price allocated to each performance obligation. When the post-sale involvement performance obligation is satisfied, the portion of the sales price allocated to it will be recognized as gain on sale of real estate assets. Property dispositions with no continuing involvement will continue to be recognized upon closing of the sale. In circumstances where Piedmont extends seller financing as part of a sale of real estate assets, Piedmont assesses the collectibility of the notes receivable as of each reporting period end. Notes receivable that are deemed to be uncollectible or fully in default are reduced to their net realizable value, which approximates their fair value.

Shares-in-trust, Preferred Stock, Common Stock, Dividends

Shares-in-trust

To date, Piedmont has not issued any shares-in-trust; however, under Piedmont’s charter, it has authority to issue a total of 150,000,000 shares-in-trust, which would be issued only in the event that there is a purported transfer of, or other change in or affecting the ownership of, Piedmont’s capital stock that would result in a violation of the ownership limits that are included in Piedmont’s charter to protect its REIT status.

Preferred Stock

To date, Piedmont has not issued any shares of preferred stock; however, Piedmont is authorized to issue up to 100,000,000 shares of one or more classes or series of preferred stock. Piedmont’s board of directors may determine the relative rights, preferences, and privileges of any class or series of preferred stock that may be issued, and can be more beneficial than the rights, preferences, and privileges attributable to Piedmont’s common stock.

Common Stock

Under Piedmont’s charter, it has authority to issue a total of 750,000,000 shares of common stock with a par value of $0.01 per share. Each share of common stock is entitled to one vote and participates in distributions equally. In February 2020, the board of directors re-authorized the stock repurchase program for up to $200 million in share repurchases under which Piedmont may repurchase its own shares from time to time, in accordance with applicable securities laws, in the open market or in privately negotiated transactions. The timing of repurchases is dependent upon market conditions and other factors, and repurchases may be commenced or suspended from time to time in Piedmont's discretion, without prior notice. As of December 31, 2020, Piedmont had approximately $169.3 million of remaining capacity under the program which may be used for share repurchases through February 2022.

Equity Securities Issued At-The-Market

Under Piedmont's at-the-market stock offering program ("ATM program"), Piedmont may offer and sell shares of its common stock from time to time in “at-the-market” offerings with an aggregate gross sales price of up to $250 million. In connection with the ATM Program, Piedmont may, at its discretion, enter into forward equity sale agreements. The use of a forward equity sale agreement would allow Piedmont to lock in a share price on the sale of shares of its common stock at the time the agreement is executed, but defer receiving the proceeds from the sale of shares until a later date, allowing Piedmont to better align such funding with its capital needs. Sales of shares of Piedmont’s common stock through its banking relationships, if any, will be made in amounts and at times to be determined by Piedmont from time to time, but Piedmont has no obligation to sell any of the shares in the offering and may suspend sales in connection with the offering at any time. Sales of Piedmont's common stock under forward equity sale agreements, if undertaken, meet the derivatives and hedging guidance scope exception to be accounted for as equity instruments based on the following assessments: (i) none of the agreements’ exercise contingencies were based on observable markets or indices besides those related to the market for Piedmont's own stock price and operations; and (ii) none of the settlement provisions precluded the agreements from being indexed to Piedmont's own stock.

Underwriting commissions and offering costs incurred in connection with all common equity offerings, including any potential issuances under Piedmont's ATM Program, are reflected as a reduction of additional paid-in capital.

Dividends

As a REIT, Piedmont is required by the Internal Revenue Code of 1986, as amended (the “Code”), to make distributions to stockholders each taxable year equal to at least 90% of its annual taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to stockholders (“REIT taxable income”). Historically, Piedmont sponsored a dividend reinvestment plan ("DRP") pursuant to which common stockholders could elect (if their brokerage agreements allowed) to reinvest an amount equal to the dividends declared on their common shares into additional shares of Piedmont’s common stock in lieu of receiving cash dividends. During the year ended December 31, 2020, the board of directors terminated the company-funded DRP offered through its transfer agent.

Noncontrolling Interest

Noncontrolling Interest

Noncontrolling interest is the equity interest of consolidated entities that is not owned by Piedmont. Noncontrolling interest is adjusted for the noncontrolling partners' share of contributions, distributions, and earnings (losses) in accordance with the respective partnership agreement. Earnings allocated to such noncontrolling partners are recorded as income applicable to noncontrolling interest in the accompanying consolidated statements of income.

Stock-based Compensation and Nonqualified Deferred Compensation Plan

Stock-based Compensation

Piedmont has issued stock-based compensation in the form of restricted stock to its employees and directors. For employees, such compensation has been issued pursuant to Piedmont's Long-term Incentive Compensation ("LTIC") program. The LTIC program is comprised of an annual restricted stock grant component (the "Restricted Stock Award" program) and a multi-year performance share component (the "Performance Share" program). Awards granted pursuant to the Restricted Stock Award and Performance Share programs, as well as director's awards, are classified as equity awards or liability awards based on the underlying terms of the program agreement. Awards classified as equity awards are expensed straight-line over the vesting period, with issuances recorded as a reduction to additional paid in capital. Forfeitures are recorded when they occur. Awards classified as liability awards are remeasured at each reporting period over the service period, with issuances recorded as a reduction to accrued expense. The compensation expense recognized related to both of these award types is recorded as property operating costs for those employees whose job is related to property operations and as general and administrative expense for all other employees and directors in the accompanying consolidated statements of income.

Non-qualified Deferred Compensation Plan

Piedmont previously offered a non-qualified deferred compensation plan ("NQDC Plan") to certain employees which allowed the employee to elect to defer receipt of compensation, including both cash and stock-based compensation, until future taxable years. As of December 31, 2019, Piedmont suspended the NQDC Plan so that no additional amounts may be deferred. Amounts deferred prior to the suspension of the NQDC Plan are invested in trading securities held in a "rabbi trust" and are measured using quoted market prices as of the reporting date, with changes in fair value recognized in net income. As of December 31, 2020 and 2019, Piedmont held approximately $0.8 million and $0.6 million, respectively, of these trading securities. Such investments are included in cash equivalents due to their short-term, liquid nature, with the corresponding liability included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets.

Net Income Available to Common Stockholders Per Share

Net Income Available to Common Stockholders Per Share

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including the dilutive effect of nonvested restricted stock. The dilutive effect of nonvested restricted stock is calculated using the treasury stock method to determine the number of additional common shares that would become outstanding if the remaining unvested restricted stock awards vested. Further, Piedmont has elected to use the "end of the reporting period" convention when using the treasury stock method to calculate the dilutive effect of any shares issued pursuant to forward equity sale agreements in connection with Piedmont's ATM Program described above. Under this methodology, the assumed sale proceeds are calculated using the closing price of Piedmont's stock as of the end of the respective reporting period.

Income Taxes

Income Taxes

Piedmont has elected to be taxed as a REIT under the Code, and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes, subject to fulfilling, among other things, its taxable income distribution requirement. However, Piedmont is subject to federal income taxes related to the operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements. Accordingly, the only provision for federal income taxes in the accompanying consolidated financial statements relates to POH. POH does not have significant tax provisions or deferred income tax items. These operations resulted in approximately $4,000, $160,000, and $(97,000) in income tax expense/(recoveries) for the years ended December 31, 2020, 2019, and 2018, respectively, as a component of other income/(expense) in the accompanying consolidated statements of income. Further, Piedmont is subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in general and administrative expenses in the accompanying consolidated financial statements.

Reclassifications

Reclassifications

Certain prior period amounts presented in the accompanying consolidated balance sheets have been reclassified as of December 31, 2019 to conform to the current period financial statement presentation related to the 1901 Market Street building, which was classified as held for sale as of March 31, 2020, and sold on June 25, 2020. (see Note 13).

Accounting Pronouncements Adopted and Other Recent Accounting Pronouncements

Accounting Pronouncements and Amendments Adopted during the year ended December 31, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the year ended December 31, 2020, Piedmont elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. Piedmont continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, Piedmont adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by ASC 842 Leases. As substantially all of Piedmont's receivables are operating lease receivables there was no

material impact to Piedmont's accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the year December 31, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. Piedmont has elected not to apply the relief provided by the FASB Staff, and has instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with Piedmont's tenants in Note 8 below.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Real Estate Assets Useful Lives

Piedmont’s real estate assets are depreciated or amortized using the straight-line method over the following useful lives:

Buildings	40 years
Building improvements	5-25 years
Land improvements	20-25 years
Tenant allowances	Lease term
Furniture, fixtures, and equipment	3-10 years
Intangible lease assets	Lease term

Schedule of Finite-Lived Intangible Assets by Major Class

Gross intangible assets and liabilities, inclusive of amounts classified as real estate assets held for sale, recorded at acquisition as of December 31, 2020 and 2019, respectively, are as follows (in thousands):

	December 31, 2020		December 31, 2019
Intangible Lease Assets:
Above-Market In-Place Lease Assets	$	2,167	$	2,082
In-Place Lease Valuation	$	156,277	$	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)	$	250,367	$	256,627
Intangible Lease Liabilities (Below-Market In-Place Leases)	$	62,784	$	84,292

Schedule of Amortization Of Intangible Lease Costs

For the years ended December 31, 2020, 2019, and 2018, respectively, Piedmont recognized amortization of intangible lease costs, included as a component of Amortization in the accompanying consolidated statements of income, as follows (in thousands):

	2020		2019		2018
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$	77,000	$	62,413	$	48,940
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$	12,191	$	8,322	$	7,615

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Net intangible assets and liabilities as of December 31, 2020 will be amortized as follows (in thousands):

	Intangible Lease Assets
	Above-Market In-place Lease Assets		In-Place Lease Valuation		Intangible Lease Origination Costs (1)		Below-Market In-place Lease Liabilities
For the year ending December 31:
2021	$	420	$	27,520	$	38,659	$	10,899
2022	300		20,662		30,447		8,422
2023	103		13,922		21,019		5,139
2024	70		9,140		14,462		3,238
2025	6		5,657		10,069		2,072
Thereafter	18		12,776		24,881		5,670
	$	917	$	89,677	$	139,537	$	35,440
Weighted-Average Amortization Period (in years)	3		5		5		5

(1)Included as a component of Deferred Lease Costs in the accompanying consolidated balance sheets.

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Acquisitions (Tables)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

During the year ended December 31, 2020, Piedmont acquired three properties and adjacent developable land (collectively the "Dallas Galleria Office Towers"), as well as the 222 South Orange Avenue building, using cash on hand and available funds from the $500 Million Unsecured 2018 Line of Credit, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Ownership Percentage Acquired	Rentable Square Feet	Percentage Leased as of Acquisition	Net Contractual Purchase Price (in millions)
Dallas Galleria Office Towers	Dallas, Texas	February 12, 2020	100%	1,435,466	95%	$396.2	(1)
222 South Orange Avenue	Orlando, Florida	October 29, 2020	100%	127,248	—%	$20.0	(2)

(1)Dallas Galleria Office Towers price includes the purchase of an adjacent parcel of approximately 1.9 acres of developable land.

(2)Piedmont allocated the purchase price amongst land of approximately $1.9 million and building of approximately $18.1 million.

The purchase price of the Dallas Galleria Office Towers and undeveloped land, inclusive of approximately $0.6 million of closing costs, was allocated as follows (in thousands):

	Dallas Galleria Office Towers and Undeveloped Land
Land	$	19,674
Building and improvements	293,760
Intangible lease assets (1)	49,177
Lease acquisition costs, net of tenant credits received from seller (1)	1,344
Intangible lease origination costs (1)	55,060
Intangible lease liabilities (1)	(22,169)
Total purchase price	$	396,846

(1)Amortization of in-place lease intangibles and lease acquisition costs are recognized using the straight-line method over approximately 5.2 years, the average remaining life of in-place leases.

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Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of December 31, 2020 and 2019, including net discounts/premiums and unamortized debt issuance costs (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								2020		2019
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	27,610	$	28,687
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		—		160,000
Net premium and unamortized debt issuance costs								326		343
Subtotal/Weighted Average (5)	5.55	%						27,936		189,030
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan	LIBOR +  1.00%		1.16	%		11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		1.05	%		9/30/2022	(7)	5,000		—
$350 Million Unsecured Senior Notes	3.40	%	3.43	%		6/01/2023		350,000		350,000
$400 Million Unsecured Senior Notes	4.45	%	4.10	%		3/15/2024		400,000		400,000
$250 Million Unsecured 2018 Term Loan	LIBOR + 0.95%		2.08	%	(8)	3/31/2025		250,000		250,000
$300 Million Unsecured Senior Notes	3.15	%	3.90	%	(9)	8/15/2030		300,000		—
Discounts and unamortized debt issuance costs								(10,932)		(7,626)
Subtotal/Weighted Average (5)	2.98	%						1,594,068		1,292,374
Total/Weighted Average (5)	3.03	%						$	1,622,004	$	1,481,404

(1)Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of December 31, 2020 and 2019 is interest-only until maturity.

(2)Effective rate after consideration of settled or in-place interest rate swap agreements, issuance premiums/discounts, and/or fair market value adjustments upon assumption of debt.

(3)Collateralized by the 5 Wall Street building in Burlington, Massachusetts.

(4)Previously collateralized by the 1901 Market Street building in Philadelphia, Pennsylvania.

(5)Weighted average is based on contractual balance of outstanding debt and the stated or effectively fixed interest rates as of December 31, 2020.

(6)On a periodic basis, Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR

locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on

Piedmont’s current credit rating.

(7)Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided Piedmont is not then in default and upon payment of extension fees.

(8)The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan. For the remaining variable portion of the loan, Piedmont may periodically select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating. The rate presented is the weighted-average rate for the effectively fixed and variable portions of the debt outstanding as of December 31, 2020 (see Note 5 for more detail).

(9)The $300 Million Unsecured Senior Notes have a fixed coupon rate of 3.15%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.24%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.90%.

Schedule of Maturities of Long-term Debt

A summary of Piedmont's consolidated principal outstanding for aggregate debt maturities of its indebtedness as of December 31, 2020, is provided below (in thousands):

2021	$	327,610
2022	5,000
2023	350,000
2024	400,000
2025	250,000
Thereafter	300,000
Total	$	1,632,610

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Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

A detail of Piedmont’s interest rate derivatives outstanding as of December 31, 2020 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025

Schedule of Interest Rate Derivatives

A detail of Piedmont’s interest rate derivatives on a gross and net basis as of December 31, 2020 and 2019, respectively, is as follows (in thousands):

Interest rate swaps classified as:	December 31, 2020		December 31, 2019
Gross derivative assets	$	—	$	—
Gross derivative liabilities	(9,834)		(5,121)
Net derivative liability	$	(9,834)	$	(5,121)

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)

The gain/(loss) on Piedmont's interest rate derivatives, including previously settled forward starting interest rate swaps, that was recorded in OCI and the accompanying consolidated statements of income as a component of interest expense for the years ended December 31, 2020, 2019, and 2018, respectively, was as follows (in thousands):

Interest Rate Swaps in Cash Flow Hedging Relationships:	2020		2019		2018
Amount of gain/(loss) recognized in OCI	$	(26,794)	$	(5,659)	$	692
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	$	(1,727)	$	1,836	$	1,558
Amount of loss recognized on derivatives reclassified from OCI into Loss on Extinguishment of Debt	$	—	$	—	$	(1,258)
Total amount of Interest Expense presented in the consolidated statements of income	$	(54,990)	$	(61,594)	$	(61,023)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income	$	(9,336)	$	—	$	(1,680)

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Fair Value Measurements of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of December 31, 2020 and 2019, respectively (in thousands):

	December 31, 2020					December 31, 2019
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents (1)	$	7,331	$	7,331	Level 1	$	13,545	$	13,545	Level 1
Tenant receivables, net (1)	$	8,448	$	8,448	Level 1	$	8,226	$	8,226	Level 1
Notes receivable	$	118,500	$	118,500	Level 2	$	—	$	—	Level 1
Restricted cash and escrows (1)	$	1,883	$	1,883	Level 1	$	1,841	$	1,841	Level 1
Liabilities:
Accounts payable and accrued expenses (1)	$	45,345	$	45,345	Level 1	$	50,049	$	50,049	Level 1
Interest rate swaps	$	9,834	$	9,834	Level 2	$	5,121	$	5,121	Level 2
Debt, net	$	1,622,004	$	1,690,377	Level 2	$	1,481,404	$	1,536,687	Level 2

(1)For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to its short-term maturity.

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Impairment Loss on Real Estate Assets (Tables)

12 Months Ended

Dec. 31, 2020

Real Estate [Abstract]

Impairment Loss on Real Estate Assets

Piedmont recorded the following impairment losses on real estate assets for the years ended December 31, 2020, 2019, and 2018 (in thousands):

	2020		2019		2018
The Dupree(1)	$	—	$	1,953	$	—
600 Corporate Drive(2)	—		7,000		—
Total impairment loss on real estate assets	$	—	$	8,953	$	—

(1)The impairment loss recognized was the result of reducing the asset's carrying value to reflect its fair value, estimated based on the net contract price negotiated with a unrelated, third-party purchaser.

(2)Management shortened the intended hold period for the property, and in doing so determined that the carrying value would not be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. As a result, Piedmont recognized a loss on impairment calculated as the difference between the carrying value of the asset and the estimated fair value less costs to sell. The estimated fair value was determined using widely available market quotations for similar properties, as well as discounted cash flow analysis. Key assumptions used in the analysis were a capitalization and discount rate of 14% and estimated selling costs of 0.75%.

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Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Nonvested Share Activity

A rollforward of Piedmont's equity based award activity for the year ended December 31, 2020 is as follows:

	Shares	Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2019	1,045,020	$	25.15
Deferred Stock Awards Granted	242,586	$	22.39
Increase in Estimated Potential Share Awards based on TSR Performance	111,545	$	26.97
Performance Stock Awards Vested	(153,368)	$	30.45
Deferred Stock Awards Vested	(229,274)	$	21.05
Deferred Stock Awards Forfeited	(6,979)	$	21.82
Unvested and Potential Stock Awards as of December 31, 2020	1,009,530	$	24.37

The following table provides additional information regarding stock award activity during the years ended 2020, 2019, and 2018 (in thousands except for per share amounts):

	2020		2019		2018
Weighted-Average Grant Date Fair Value of Deferred Stock Granted During the Period	$	22.39	$	21.02	$	17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	4,826	$	8,658	$	6,378
Share-based Liability Awards Paid During the Period (1)	$	4,116	$	6,683	$	2,947

(1)Amounts reflect the issuance of performance share awards related to the 2017-19, 2016-18, and 2015-17 Performance Share Plans during the years ended December 31, 2020, 2019, and 2018 respectively, as well as performance share award liabilities settled in cash in July 2019 for retirement and separation associated with the senior management transition on June 30, 2019.

Schedule of Outstanding Employee Deferred Stock Awards

A detail of Piedmont’s outstanding employee restricted stock awards as of December 31, 2020 is as follows:

Date of grant	Type of Award	Net  Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested and Potential Shares as of December 31, 2020
May 17, 2018	Deferred Stock Award	250,627	$	17.84	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 17, 2019, 2020, and 2021, respectively.	52,740
May 17, 2018	Fiscal Year 2018-2020 Performance Share Program	—	$	23.52	Shares awarded, if any, will vest immediately upon determination of award in 2021.	200,674	(2)
May 3, 2019	Deferred Stock Award	274,904	$	21.04	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 3, 2020, 2021, and 2022, respectively.	133,900
May 3, 2019	Fiscal Year 2019-2021 Performance Share Program	—	$	29.43	Shares awarded, if any, will vest immediately upon determination of award in 2022.	224,900	(2)
February 19, 2020	Deferred Stock Award	178,181	$	24.41	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on February 19, 2021, 2022, and 2023, respectively.	143,605
March 19, 2020	Fiscal Year 2020-2022 Performance Share Program	—	$	25.83	Shares awarded, if any, will vest immediately upon determination of award in 2023.	207,931	(2)
May 13, 2020	Deferred Stock Award-Board of Directors	45,780	$	13.76	Of the shares granted, 100% will vest by May 13, 2021.	45,780
Total						1,009,530

(1)Amounts reflect the total grant to employees and independent directors, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through December 31, 2020.

(2)Estimated based on Piedmont's cumulative TSR for the respective performance period through December 31, 2020. Share estimates are subject to change in future periods based upon Piedmont's relative performance compared to its peer group of office REITs' TSR.

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively (in thousands):

	2020	2019	2018
Weighted-average common shares—basic	125,730	125,709	130,161
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	374	473	475
Weighted-average common shares—diluted	126,104	126,182	130,636

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Operating Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lessor, Operating Lease, Payments to be Received

The future minimum rental income from Piedmont’s investment in real estate assets under non-cancelable operating leases as of December 31, 2020 is presented below (in thousands):

Years ending December 31:
2021	$	378,807
2022	367,261
2023	331,195
2024	290,377
2025	244,376
Thereafter	1,134,705
Total	$	2,746,721

Operating Lease, Lease Income

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the years ended December 31, 2020, 2019, and 2018, respectively, as follows (in thousands):

	2020		2019		2018
Fixed payments	$	433,841	$	418,245	$	411,667
Variable payments	86,112		93,660		92,743
Total Rental and Tenant Reimbursement Revenue	$	519,953	$	511,905	$	504,410

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Property Dispositions and Assets Held for Sale (Tables)

12 Months Ended

Dec. 31, 2020

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures

Details of such properties sold are presented below (in thousands):

Buildings Sold	Location	Date of Sale	Gain on Sale of Real Estate Assets			Net Sales Proceeds
2017 Disposition Portfolio	Various(1)	January 4, 2018	$	45,275		$	419,644	(2)
800 North Brand Boulevard	Glendale, California	November 29, 2018	$	30,416		$	155,583
One Independence Square	Washington, D.C.	February 28, 2019	$	33,176		$	163,623
The Dupree	Atlanta, Georgia	September 4, 2019	$	—	(3)	$	12,631
500 West Monroe Street	Chicago, Illinois	October 28, 2019	$	157,739		$	408,851
1901 Market Street	Philadelphia, Pennsylvania	June 25, 2020	$	191,030		$	350,805
New Jersey Portfolio	Various(4)	October 28, 2020	$	14,636		$	9,289	(5)

(1)The 2017 Disposition Portfolio is comprised of the following properties: Desert Canyon 300 in Phoenix, Arizona; Windy Point I & II in Schaumburg, Illinois; 2300 Cabot Drive in Lisle, Illinois; 1075 West Entrance Drive in Auburn Hills, Michigan; Auburn Hills Corporate Center in Auburn Hills, Michigan; 5301 Maryland Way in Brentwood, Tennessee; Suwanee Gateway One in Suwanee, Georgia; 5601 Hiatus Road in Tamarac, Florida; Piedmont Pointe I & II in Bethesda, Maryland; 1200 Crown Colony Drive in Quincy, Massachusetts; 2001 N.W. 64th Street in Fort Lauderdale, Florida, and 2120 West End Avenue in Nashville, Tennessee.

(2)Piedmont accepted a secured $3.2 million promissory note from the buyer for a portion of the sales price, which was subsequently paid in full by the borrower.

(3)As discussed in Note 7 above, Piedmont recognized an impairment loss prior to the sale of the property.

(4)The New Jersey Portfolio is comprised of the following three properties: 200 Bridgewater Crossing in Bridgewater, New Jersey; 400 Bridgewater Crossing in Bridgewater, New Jersey; and 600 Corporate Drive in Lebanon, New Jersey.

(5)Piedmont accepted a secured $102.8 million promissory note from the buyer, which matures on October 31, 2023 and bears interest at 6% per annum. The note may not be prepaid without penalty until January 2022, and may be extended for three available one-year periods upon payment of applicable extension fees. Further, Piedmont also accepted a mezzanine note for $15.7 million, bearing interest at 13.55% per annum, which may be repaid any time before the October 31, 2023 maturity without penalty.

Assets Held For Sale and Discontinued Operations

Details of amounts held for sale as of December 31, 2020 and 2019 are presented below (in thousands):

	December 31, 2020		December 31, 2019
Real estate assets held for sale, net:
Land	$	—	$	20,829
Building and improvements, less accumulated depreciation of $0 and $66,823 as of December 31, 2020, and 2019, respectively	—		112,287
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of December 31, 2020 and 2019, respectively	—		6,574
Total real estate assets held for sale, net	$	—	$	139,690
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of December 31, 2020 and 2019, respectively	—		9,425
Total other assets held for sale, net	$	—	$	28,201
Other liabilities held for sale, net:
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of December 31, 2020 and 2019, respectively	$	—	$	7,657

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Supplemental Disclosures for the Statement of Consolidated Cash Flows (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

Certain noncash investing and financing activities for the years ended December 31, 2020, 2019, and 2018 (in thousands) are outlined below:

	2020		2019		2018
Accrued capital expenditures and deferred lease costs	$	20,103	$	38,366	$	10,854
Change in accrued dividends and discount on dividend reinvestments	$	(744)	$	(545)	$	(74,828)
Change in accrued share repurchases as part of an announced plan	$	685	$	(4,417)	$	3,140
Notes receivable issued in conjunction with property dispositions	$	118,500	$	—	$	—

The following table provides a reconciliation of cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statement of cash flows for the years ended December 31, 2020, 2019, and 2018 to the consolidated balance sheets for the respective period (in thousands):

	2020		2019		2018
Cash and cash equivalents, beginning of period	$	13,545	$	4,571	$	7,382
Restricted cash and escrows, beginning of period	1,841		1,463		1,373
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows, beginning of period	$	15,386	$	6,034	$	8,755
Cash and cash equivalents, end of period	$	7,331	$	13,545	$	4,571
Restricted cash and escrows, end of period	1,883		1,841		1,463
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows, end of period	$	9,214	$	15,386	$	6,034

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Tax Basis Income

Piedmont’s income tax basis net income for the years ended December 31, 2020, 2019, and 2018, is calculated as follows (in thousands):

	2020		2019		2018
GAAP basis financial statement net income	$	232,688	$	229,261	$	130,296
Increase/(decrease) in net income resulting from:
Depreciation and amortization expense recognized for financial reporting purposes in excess of amounts recognized for income tax purposes	73,784		10,381		54,420
Rental income accrued for income tax purposes less than amounts for financial reporting purposes	(25,726)		(34,804)		(9,681)
Net amortization of above/below-market lease intangibles for income tax purposes in excess of amounts for financial reporting purposes	(11,625)		(7,698)		(7,453)
Gain on disposal of property for financial reporting purposes less than/(in excess of) amounts for income tax purposes	(222,037)		(85,463)		(36,241)
Taxable income or loss of Piedmont Washington Properties, Inc., in excess of/(less than) amount for financial reporting purposes	1,345		411		(2,089)
Other expenses, including impairment loss on real estate assets, for financial reporting purposes in excess of/ (less than) amounts for income tax purposes	10,970		23,127		(37,394)
Taxable income for POH in excess of/(less than) amount for financial reporting purposes	1,499		175		(64)
Income tax basis net income, prior to dividends paid deduction	$	60,898	$	135,390	$	91,794

Schedule of Characterization Of Dividends To Common Stockholders

For income tax purposes, dividends to common stockholders are characterized as ordinary income, capital gains, or as a return of a stockholder’s invested capital. The composition of Piedmont’s distributions per common share is presented below:

	2020		2019		2018
Ordinary income	91.91	%	29.82	%	100.00	%
Return of capital	8.09	%	—	%	—	%
Capital gains	—	%	70.18	%	—	%
	100	%	100	%	100	%

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Quarterly Results (unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

A summary of the unaudited quarterly financial information for the years ended December 31, 2020 and 2019, is presented below (in thousands, except per-share data):

	2020
	First		Second		Third		Fourth
Revenues	$	137,171	$	134,631	$	131,693	$	131,529
Gain/(loss) on sale of real estate assets	$	3	$	191,369	$	(340)	$	14,634
Net income	$	8,711	$	192,426	$	8,940	$	22,608
Net income applicable to Piedmont	$	8,709	$	192,427	$	8,943	$	22,609
Basic earnings per share	$	0.07	$	1.53	$	0.07	$	0.18
Diluted earnings per share	$	0.07	$	1.52	$	0.07	$	0.18
Dividends declared per share	$	0.21	$	0.21	$	0.21	$	0.21

	2019
	First		Second		Third		Fourth
Revenues	$	132,936	$	130,668	$	135,421	$	134,153
Gain on sale of real estate assets	$	37,887	$	1,451	$	32	$	157,640
Net income	$	50,209	$	8,152	$	8,419	$	162,476
Net income applicable to Piedmont	$	50,208	$	8,153	$	8,422	$	162,478
Basic and diluted earnings per share	$	0.40	$	0.06	$	0.07	$	1.29
Dividends declared per share	$	0.21	$	0.21	$	0.21	$	0.21

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of Revenue and Net Operating Income, by Segment

The following table presents revenues included in NOI by geographic reportable segments (in thousands):

	Years Ended December 31,
	2020		2019		2018
Dallas	$	101,727	$	55,346	$	54,382
Atlanta	95,403		75,699		62,282
Washington, D.C.	59,760		64,481		68,404
Minneapolis	61,465		64,318		57,711
Boston	61,338		64,739		54,648
Orlando	54,886		57,084		55,440
New York	69,827		75,587		71,733
Total reportable segments	504,406		457,254		424,600
Corporate and other	30,618		75,924		101,367
Total Revenues	$	535,024	$	533,178	$	525,967

The following table presents NOI by geographic reportable segments (in thousands):

	Years Ended December 31,
	2020		2019		2018
Dallas	$	59,845	$	29,438	$	29,286
Atlanta	60,276		47,287		38,660
Washington, D.C.	36,696		41,167		41,565
Minneapolis	33,588		35,610		30,402
Boston	41,722		44,016		37,887
Orlando	34,427		35,433		35,067
New York	38,990		44,036		40,622
Total reportable segments	305,544		276,987		253,489
Corporate and other	13,915		43,637		63,649
Total NOI	$	319,459	$	320,624	$	317,138

A reconciliation of Net income applicable to Piedmont to NOI is presented below (in thousands):

	Years Ended December 31,
	2020		2019		2018
Net income applicable to Piedmont	$	232,688	$	229,261	$	130,296
Management fee revenue (1)	(1,495)		(2,518)		(712)
Depreciation and amortization	203,869		182,682		171,252
Impairment loss on real estate assets	—		8,953		—
General and administrative expenses	27,464		37,895		29,713
Interest expense	54,990		61,594		61,023
Other income	(1,724)		(228)		(418)
Loss on extinguishment of debt	9,336		—		1,680
Gain on sale of real estate assets	(205,666)		(197,010)		(75,691)
Net loss applicable to noncontrolling interests	(3)		(5)		(5)
NOI	$	319,459	$	320,624	$	317,138

(1)Presented net of related operating expenses incurred to earn such management fee revenue. Such operating expenses are a component of property operating costs in the accompanying consolidated statements of income.

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Organization (Details) ft² in Millions	12 Months Ended
	Dec. 31, 2020 ft² subsidiary property market
Real Estate Properties [Line Items]
Number of wholly owned subsidiaries | subsidiary	2
Number of real estate properties	4
Rentable square feet | ft²	16.4
Piedmont Office Realty Trust, Inc.
Real Estate Properties [Line Items]
Percentage ownership by sole general partner	99.90%
Piedmont Office Holdings, Inc
Real Estate Properties [Line Items]
Percentage ownership by sole limited partner	0.10%
US
Real Estate Properties [Line Items]
Number of office markets | market	7
In-Service Office Properties
Real Estate Properties [Line Items]
Number of real estate properties	54
Percentage of Class A commercial office space	86.80%
Redevelopment Asset
Real Estate Properties [Line Items]
Number of real estate properties	1

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Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) vote Joint_Venture property reportingUnit $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($)	Feb. 29, 2020 USD ($)
Significant Accounting Policies [Line Items]
Number of real estate properties | property	4
Number of joint ventures | Joint_Venture	3
Uncollectable lease receivables expense			$ 91,000
Number of reporting units | reportingUnit	7
Change in goodwill balance	$ 0
Capitalized internal leasing costs			300,000
Amortization of deferred lease costs	60,200,000	$ 50,300,000	43,600,000
Amortization of lease incentive	3,400,000	3,200,000	2,600,000
Amortization of fair value adjustments	500,000	500,000	500,000
Amortization of debt discount	300,000	200,000	200,000
Amortization of deferred financing costs and fair market value adjustments on notes payable	$ 3,000,000.0	$ 2,400,000	2,400,000
Shares-in-trust, shares authorized (in shares) | shares	150,000,000	150,000,000
Preferred stock, shares authorized (in shares) | shares	100,000,000	100,000,000
Common stock, shares authorized (in shares) | shares	750,000,000	750,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Number of votes for each share of common stock | vote	1
Stock repurchase program, authorized amount				$ 200,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 169,300,000
At-the-market offerings, maximum amount	250,000,000
Income tax expense (benefit)	4,000	$ 160,000	$ (97,000)
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits
Significant Accounting Policies [Line Items]
Assets held as trading securities	$ 800,000	$ 600,000
1201 Eye Street NW Associates LLC and 1225 Eye Street, NW Associates LLC
Significant Accounting Policies [Line Items]
Number of joint ventures | Joint_Venture	2

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Summary of Significant Accounting Policies - Real Estate Assets Useful Life (Details)	12 Months Ended
	Dec. 31, 2020
Buildings
Property, Plant and Equipment [Line Items]
Useful life	40 years
Building improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Building improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life	25 years
Land improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life	20 years
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life	25 years
Furniture, fixtures, and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Furniture, fixtures, and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life	10 years

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Summary of Significant Accounting Policies - Gross Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible Lease Liabilities (Below-Market In-Place Leases)	$ 62,784	$ 84,292
Above-Market In-place Lease Assets
Finite-Lived Intangible Assets [Line Items]
Intangible lease assets	2,167	2,082
In-Place Lease Valuation
Finite-Lived Intangible Assets [Line Items]
Intangible lease assets	156,277	157,101
Intangible Lease Origination Costs
Finite-Lived Intangible Assets [Line Items]
Intangible lease assets	$ 250,367	$ 256,627

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Summary of Significant Accounting Policies - Intangible Asset Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$ 77,000	$ 62,413	$ 48,940
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$ 12,191	$ 8,322	$ 7,615

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Summary of Significant Accounting Policies - Future Amortization of Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Total	$ 90,594	$ 74,405
Below Market Lease, Net, Amortization Income, Fiscal Maturity [Abstract]
2021	10,899
2022	8,422
2023	5,139
2024	3,238
2025	2,072
Thereafter	5,670
Total	$ 35,440
Weighted-Average Amortization Period (in years)	5 years
Above-Market In-place Lease Assets
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2021	$ 420
2022	300
2023	103
2024	70
2025	6
Thereafter	18
Total	$ 917
Weighted-Average Amortization Period (in years)	3 years
In-Place Lease Valuation
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2021	$ 27,520
2022	20,662
2023	13,922
2024	9,140
2025	5,657
Thereafter	12,776
Total	$ 89,677
Weighted-Average Amortization Period (in years)	5 years
Intangible Lease Origination Costs
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2021	$ 38,659
2022	30,447
2023	21,019
2024	14,462
2025	10,069
Thereafter	24,881
Total	$ 139,537
Weighted-Average Amortization Period (in years)	5 years

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Acquisitions - Additional Information (Details)	Oct. 29, 2020 USD ($) ft²	Feb. 12, 2020 USD ($) ft²	Dec. 31, 2020 USD ($) ft² a building	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Number of properties acquired | building			3
Rentable square feet | ft²			16,400,000
Area of land | a			1.9
Land			$ 484,466,000	$ 485,560,000
Dallas Galleria Office Towers
Business Acquisition [Line Items]
Ownership percentage acquired		100.00%
Rentable square feet | ft²		1,435,466
Percentage leased as of acquisition		95.00%
Net contractual purchase price		$ 396,200,000
Closing costs		600,000
Land		19,674,000
Building and improvements		$ 293,760,000
222 South Orange Avenue
Business Acquisition [Line Items]
Ownership percentage acquired	100.00%
Rentable square feet | ft²	127,248
Percentage leased as of acquisition	0.00%
Net contractual purchase price	$ 20,000,000.0
Land	1,900,000
Building and improvements	$ 18,100,000
Unsecured Debt | Unsecured 500 Million 2018 Line Of Credit
Business Acquisition [Line Items]
Face amount of facility			$ 500,000,000

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Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Feb. 12, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Land	$ 484,466		$ 485,560
Dallas Galleria Office Towers
Business Acquisition [Line Items]
Land		$ 19,674
Building and improvements		293,760
Intangible lease assets		49,177
Lease acquisition costs, net of tenant credits received from seller		1,344
Intangible lease origination costs		55,060
Intangible lease liabilities		(22,169)
Total purchase price		$ 396,846
Acquired intangible assets, remaining amortization period	5 years 2 months 12 days

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Debt - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) contract	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Aug. 31, 2020 USD ($)
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 9,336,000	$ 0	$ 1,680,000
Weighted average interest rate	3.03%	3.76%
Interest paid	$ 50,700,000	$ 64,000,000.0	63,100,000
Interest capitalized	$ 1,000,000.0	$ 2,100,000	$ 1,400,000
Forward Starting Interest Rate Swaps
Debt Instrument [Line Items]
Number of swap agreements | contract	4
Derivative, notional amount	$ 200,000,000
Cash paid to settle interest rate swap agreements	$ 19,900,000
Unsecured Debt
Debt Instrument [Line Items]
Weighted average interest rate	2.98%
Secured Debt
Debt Instrument [Line Items]
Weighted average interest rate	5.55%
Unsecured 300 Million 2020 Senior Notes | Unsecured Debt
Debt Instrument [Line Items]
Face amount of facility	$ 300,000,000			$ 300,000,000
Stated rate (percentage)	3.15%
Proceeds from issuance of debt	$ 297,700,000
Debt instrument, discount	$ 2,300,000
Debt instrument term	10 years
Debt instrument, redemption price, percentage	100.00%
$300 million Unsecured 2020 Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Face amount of facility	$ 300,000,000
$250 Million 2018 Unsecured Term Loan | LIBOR
Debt Instrument [Line Items]
Spread on variable rate	0.95%	1.60%
$250 Million 2018 Unsecured Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Face amount of facility	$ 250,000,000
Unsecured 500 Million 2018 Line Of Credit | Unsecured Debt
Debt Instrument [Line Items]
Face amount of facility	500,000,000
Fixed Rate 160 Million Loan | Secured Debt
Debt Instrument [Line Items]
Face amount of facility	$ 160,000,000
Stated rate (percentage)	3.48%

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Debt - Schedule of Debt (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) extension	Aug. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Subtotal/weighted average	3.03%		3.76%
Amount outstanding	$ 1,622,004,000		$ 1,481,404,000
Seven Year Interest Rate Swap Agreement | Interest rate swaps
Debt Instrument [Line Items]
Derivative, notional amount	$ 100,000,000
Secured Debt
Debt Instrument [Line Items]
Subtotal/weighted average	5.55%
Amount outstanding	$ 27,936,000		189,030,000
Premium (discount) and unamortized debt issuance costs	326,000		343,000
Secured Debt | Secured 35 Million Mortgage Loan
Debt Instrument [Line Items]
Face amount of facility	$ 35,000,000		35,000,000
Stated rate (percentage)	5.55%
Effective rate	3.75%
Amount outstanding			28,687,000
Secured Debt | Fixed Rate 160 Million Loan
Debt Instrument [Line Items]
Face amount of facility	$ 160,000,000
Stated rate (percentage)	3.48%
Effective rate	3.58%
Amount outstanding	$ 0		160,000,000
Unsecured Debt
Debt Instrument [Line Items]
Subtotal/weighted average	2.98%
Amount outstanding	$ 1,594,068,000		1,292,374,000
Premium (discount) and unamortized debt issuance costs	(10,932,000)		(7,626,000)
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan
Debt Instrument [Line Items]
Face amount of facility	$ 300,000,000
Effective rate	1.16%
Amount outstanding	$ 300,000,000		300,000,000
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan | LIBOR
Debt Instrument [Line Items]
Spread on variable rate	1.00%
Unsecured Debt | Unsecured 500 Million 2018 Line Of Credit
Debt Instrument [Line Items]
Face amount of facility	$ 500,000,000
Additional extension period	1 year
Number of extension periods | extension	2
Maturity extension period	6 months
Unsecured Debt | Unsecured 500 Million 2018 Line Of Credit | Line of Credit
Debt Instrument [Line Items]
Face amount of facility	$ 500,000,000
Effective rate	1.05%
Amount outstanding	$ 5,000,000		0
Unsecured Debt | Unsecured 500 Million 2018 Line Of Credit | LIBOR | Line of Credit
Debt Instrument [Line Items]
Spread on variable rate	0.90%
Unsecured Debt | Unsecured Senior 350 Million Notes
Debt Instrument [Line Items]
Face amount of facility	$ 350,000,000
Stated rate (percentage)	3.40%
Effective rate	3.43%
Amount outstanding	$ 350,000,000		350,000,000
Unsecured Debt | Unsecured Senior 400 Million Notes
Debt Instrument [Line Items]
Face amount of facility	$ 400,000,000
Stated rate (percentage)	4.45%
Effective rate	4.10%
Amount outstanding	$ 400,000,000		400,000,000
Unsecured Debt | Unsecured Senior 250 Million 2018 Term Loan
Debt Instrument [Line Items]
Face amount of facility	$ 250,000,000
Effective rate	2.08%
Amount outstanding	$ 250,000,000		250,000,000
Derivative fixed interest rate	3.56%
Unsecured Debt | Unsecured Senior 250 Million 2018 Term Loan | Interest rate swaps
Debt Instrument [Line Items]
Derivative, notional amount	$ 100,000,000
Unsecured Debt | Unsecured Senior 250 Million 2018 Term Loan | LIBOR
Debt Instrument [Line Items]
Spread on variable rate	0.95%
Unsecured Debt | Unsecured 300 Million 2020 Senior Notes
Debt Instrument [Line Items]
Face amount of facility	$ 300,000,000	$ 300,000,000
Stated rate (percentage)	3.15%
Effective rate	3.90%	3.24%
Amount outstanding	$ 300,000,000		$ 0

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Debt - Maturities of Long-term Debt (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Debt Disclosure [Abstract]
2021	$ 327,610
2022	5,000
2023	350,000
2024	400,000
2025	250,000
Thereafter	300,000
Total	$ 1,632,610

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Derivative Instruments - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) contract	Dec. 31, 2018 USD ($) contract	Aug. 31, 2020 USD ($)
Derivative [Line Items]
Maximum length of time of cash flow hedge	51 months
Gain (loss) to be reclassified	$ 2,900,000
Forward Starting Interest Rate Swaps
Derivative [Line Items]
Number of swap agreements | contract	4
Derivative, notional amount	$ 200,000,000
Cash paid to settle interest rate swap agreements	$ 19,900,000
Interest rate swaps
Derivative [Line Items]
Number of terminated derivatives | contract	2	6
Gain on cash flow hedging instruments		$ 100,000
Credit Risk Contract
Derivative [Line Items]
Assets needed for immediate settlement, aggregate fair value	$ 10,100,000
Unsecured Debt | Unsecured 300 Million 2020 Senior Notes
Derivative [Line Items]
Face amount of facility	$ 300,000,000		$ 300,000,000
Debt instrument term	10 years
Unsecured Debt | $300 Million Unsecured 2013 Term Loan
Derivative [Line Items]
Repayments of debt		300,000,000
Proceeds from termination of interest rate swap agreement		800,000
Unsecured Debt | $300 Million Unsecured 2013 Term Loan | Interest rate swaps
Derivative [Line Items]
Net loss on interest rate cash flow hedge termination		$ 1,300,000
Unsecured Debt | Unsecured Senior 250 Million 2018 Term Loan
Derivative [Line Items]
Face amount of facility	$ 250,000,000
Amount of hedged debt	$ 100,000,000
Unsecured Debt | Unsecured Senior 250 Million 2018 Term Loan | Interest rate swaps
Derivative [Line Items]
Number of swap agreements | contract	2
Derivative, notional amount	$ 100,000,000

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Derivative Instruments - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) - Unsecured Debt - Unsecured Senior 250 Million 2018 Term Loan	Dec. 31, 2020 USD ($) contract
Derivative [Line Items]
Face amount of facility	$ 250,000,000
Interest rate swaps
Derivative [Line Items]
Number of swap agreements | contract	2
Derivative, notional amount	$ 100,000,000

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Derivative Instruments - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross derivative assets	$ 0	$ 0
Gross derivative liabilities	(9,834)	(5,121)
Net derivative liability	$ (9,834)	$ (5,121)

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Derivative Instruments - Effect on other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Amount of gain/(loss) recognized in OCI	$ (26,794)	$ (5,659)	$ 692
Total amount of Interest Expense presented in the consolidated statements of income	(54,990)	(61,594)	(61,023)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income	(9,336)	0	(1,680)
Interest rate swaps
Derivative [Line Items]
Total amount of Interest Expense presented in the consolidated statements of income	(54,990)	(61,594)	(61,023)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income	(9,336)	0	(1,680)
Interest Expense | Interest rate swaps
Derivative [Line Items]
Amount of gain/(loss) recognized in OCI	(26,794)	(5,659)	692
Amount of gain/(loss) reclassified from OCI	(1,727)	1,836	1,558
Gain (Loss) On Extinguishment Of Debt | Interest rate swaps
Derivative [Line Items]
Amount of gain/(loss) reclassified from OCI	$ 0	$ 0	$ (1,258)

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Fair Value Measurements of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 9,834	$ 5,121
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	7,331	13,545
Tenant receivables, net	8,448	8,226
Notes receivable	118,500	0
Restricted cash and escrows	1,883	1,841
Accounts payable and accrued expenses	45,345	50,049
Debt, net	1,622,004	1,481,404
Carrying Value | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	9,834	5,121
Estimated Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	7,331	13,545
Tenant receivables, net	8,448	8,226
Notes receivable	118,500	0
Restricted cash and escrows	1,883	1,841
Accounts payable and accrued expenses	45,345	50,049
Estimated Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, net	1,690,377	1,536,687
Estimated Fair Value | Level 2 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 9,834	$ 5,121

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Impairment Loss on Real Estate Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment loss on real estate assets	$ 0	$ 8,953	$ 0
Capitalization
Impaired Long-Lived Assets Held and Used [Line Items]
Loss on impairment, measurement input	14.00%
Estimated Selling Costs
Impaired Long-Lived Assets Held and Used [Line Items]
Loss on impairment, measurement input	0.75%
Disposal Group, Held-for-sale, Not Discontinued Operations | The Dupree
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment loss on real estate assets	$ 0	1,953	0
Disposal Group, Held-for-sale, Not Discontinued Operations | 600 Corporate Drive
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment loss on real estate assets	$ 0	$ 7,000	$ 0

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Commitments and Contingencies (Details) ft² in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) ft² Joint_Venture tenant	Dec. 31, 2019 USD ($)
Loss Contingencies [Line Items]
Number of unrecorded tenant allowance commitments | Joint_Venture	1
Unrecorded tenant allowance commitment	$ 38.2
Unrecorded tenant allowance renewal term	20 years
Unrecorded tenant allowance expansion area | ft²	520
Current year revenue deferred due to lease modification agreements, amount collected to date	$ 1.3
Contingencies Related To COVID-19 Pandemic
Loss Contingencies [Line Items]
Number of tenants with lease modification agreements | tenant	70
Current year revenue deferred due to lease modification agreements	$ 7.1
Charges against lease income, general reserves	4.6
Collectibility of Tenant Reimbursements
Loss Contingencies [Line Items]
Recovery of previously recognized loss contingencies	$ 0.6
Additional expense related to such tenant audits/disputes		$ 0.5

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Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transactions [Abstract]
Related party consulting agreement expense recognized	$ 0.1	$ 0.2	$ 0.3

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Stock Based Compensation - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense and directors' fees related to stock awards	$ 9.7	$ 15.1	$ 9.7
Compensation expense, non-vested awards	$ 8.5	$ 13.6	$ 8.6
Number of shares issued to employees, directors and officers (in shares)	245,875
Nonvested awards, total compensation cost not yet recognized	$ 6.1
Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards, total compensation cost not yet recognized, period for recognition	1 year
Independent Director Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year

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Stock Based Compensation - Rollforward of Stock Awards (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Awards
Rollforward of deferred stock award activity
Unvested and Potential Stock Awards as of the beginning of the year (in shares)	1,045,020
Unvested and Potential Stock Awards as of end of the year (in shares)	1,009,530	1,045,020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unvested and Potential Stock Awards, Weighted-Average Grant Date Fair Value at beginning of year (in dollars per share)	$ 25.15
Unvested and Potential Stock Awards, Weighted-Average Grant Date Fair Value at end of year (in dollars per share)	$ 24.37	$ 25.15
Deferred Stock Award
Rollforward of deferred stock award activity
Deferred Stock Awards Granted (in shares)	242,586
Deferred Stock Awards Vested (in shares)	(229,274)
Deferred Stock Awards Forfeited (in shares)	(6,979)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Deferred Stock Awards Granted, Weighted-Average Grant Date Fair (in dollars per share)	$ 22.39	$ 21.02	$ 17.84
Deferred Stock Awards Vested, Weighted-Average Grant Date Fair Value (in dollars per share)	21.05
Deferred Stock Awards Forfeited, Weighted Average Grant Date Fair Value (in dollars per share)	$ 21.82
Performance Shares
Rollforward of deferred stock award activity
Increase in Estimated Potential Future Performance Share Awards, net of forfeitures (in shares)	111,545
Deferred Stock Awards Vested (in shares)	(153,368)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Increase in Estimated Potential Future Performance Share Awards, Weighted Average Grant Date Fair Value (in dollars per share)	$ 26.97
Deferred Stock Awards Vested, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 30.45

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Stock Based Compensation - Additional Information Regarding Stock Award Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Stock Awards Granted, Weighted-Average Grant Date Fair (in dollars per share)	$ 22.39	$ 21.02	$ 17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$ 4,826	$ 8,658	$ 6,378
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Liability Awards Paid During the Period	$ 4,116	$ 6,683	$ 2,947

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Stock Based Compensation - Outstanding Employee Stock Awards (Details) - $ / shares	May 13, 2020	Feb. 19, 2020	May 03, 2019	May 17, 2018	Dec. 31, 2020	Mar. 19, 2020
Deferred Stock Award, Granted May 17, 2018 | Deferred Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)				250,627
Grant Date Fair Value (in dollars per share)				$ 17.84
Unvested shares (in shares)					52,740
Deferred Stock Award, Granted May 17, 2018 | Deferred Stock Award | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Award, Granted May 17, 2018 | Deferred Stock Award | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Award, Granted May 17, 2018 | Deferred Stock Award | Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Award, Granted May 17, 2018 | Deferred Stock Award | Share-based Compensation Award, Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Performance Share Program Award, Granted May 17, 2018 | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)				0
Grant Date Fair Value (in dollars per share)				$ 23.52
Unvested shares (in shares)					200,674
Deferred Stock Award, Granted May 3, 2019 | Deferred Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)			274,904
Grant Date Fair Value (in dollars per share)			$ 21.04
Unvested shares (in shares)					133,900
Deferred Stock Award, Granted May 3, 2019 | Deferred Stock Award | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Award, Granted May 3, 2019 | Deferred Stock Award | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Award, Granted May 3, 2019 | Deferred Stock Award | Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Award, Granted May 3, 2019 | Deferred Stock Award | Share-based Compensation Award, Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Performance Share Program Award, Granted May 3, 2019 | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)			0
Grant Date Fair Value (in dollars per share)			$ 29.43
Unvested shares (in shares)					224,900
Deferred Stock Award, Granted February 19, 2020 | Deferred Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)		178,181
Grant Date Fair Value (in dollars per share)		$ 24.41
Unvested shares (in shares)					143,605
Deferred Stock Award, Granted February 19, 2020 | Deferred Stock Award | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Award, Granted February 19, 2020 | Deferred Stock Award | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Award, Granted February 19, 2020 | Deferred Stock Award | Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Award, Granted February 19, 2020 | Deferred Stock Award | Share-based Compensation Award, Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Performance Share Program Award, Granted March 19, 2020 | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)						0
Grant Date Fair Value (in dollars per share)						$ 25.83
Unvested shares (in shares)					207,931
Deferred Stock Award, Granted May 13, 2020 | Deferred Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)	45,780
Grant Date Fair Value (in dollars per share)	$ 13.76
Vesting percentage	100.00%
Unvested shares (in shares)					45,780

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Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	289,681	156,317	170,128
Weighted-average common shares outstanding - basic (in shares)	125,730,460	125,709,207	130,161,202
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards (in shares)	374,000	473,000	475,000
Weighted-average common shares outstanding - diluted (in shares)	126,104,321	126,182,137	130,635,650

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Operating Leases - Rental Income Maturity (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Leases [Abstract]
2021	$ 378,807
2022	367,261
2023	331,195
2024	290,377
2025	244,376
Thereafter	1,134,705
Total	$ 2,746,721

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Operating Leases - Operating Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Fixed payments	$ 433,841	$ 418,245	$ 411,667
Variable payments	86,112	93,660	92,743
Total Rental and Tenant Reimbursement Revenue	$ 519,953	$ 511,905	$ 504,410

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Operating Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Right-of-use asset	$ 0.2	$ 0.2
Lease liability	0.2	0.2
Operating lease cost	$ 0.1	$ 0.1
Operating lease, weighted average remaining lease term	2 years
Weighted-average discount rate	1.60%
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PrepaidExpenseAndOtherAssets	us-gaap:PrepaidExpenseAndOtherAssets

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Property Dispositions and Assets Held for Sale - Property Dispositions (Details) $ in Thousands		12 Months Ended
	Oct. 28, 2020 USD ($) extension	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 04, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notes receivable		$ 118,500	$ 0
Real Estate Loan | Secured Notes Receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notes receivable	$ 102,800				$ 3,200
Notes receivable, interest rate	6.00%
Notes receivable, number of extension terms | extension	3
Notes receivable, extension term duration	1 year
Real Estate Loan | Mezzanine Note Receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notes receivable	$ 15,700
Notes receivable, interest rate	13.55%
Disposal Group, Disposed of by Sale, Not Discontinued Operations | 2017 Disposition Portfolio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets				$ 45,275
Net Sales Proceeds				419,644
Disposal Group, Disposed of by Sale, Not Discontinued Operations | 800 North Brand Boulevard
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets				30,416
Net Sales Proceeds				$ 155,583
Disposal Group, Disposed of by Sale, Not Discontinued Operations | One Independence Square
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets			33,176
Net Sales Proceeds			163,623
Disposal Group, Disposed of by Sale, Not Discontinued Operations | The Dupree
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets			0
Net Sales Proceeds			12,631
Disposal Group, Disposed of by Sale, Not Discontinued Operations | 500 West Monroe Street
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets			157,739
Net Sales Proceeds			$ 408,851
Disposal Group, Disposed of by Sale, Not Discontinued Operations | 1901 Market Street
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets		191,030
Net Sales Proceeds		350,805
Disposal Group, Disposed of by Sale, Not Discontinued Operations | New Jersey Portfolio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Sale of Real Estate Assets		14,636
Net Sales Proceeds		$ 9,289

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Property Dispositions and Assets Held for Sale - Assets Held-for-Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accumulated amortization, intangible lease assets	$ 67,850	$ 50,766
Total other assets held for sale, net	0	28,201
Intangible Lease Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of December 31, 2020 and 2019, respectively	0	6,574
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate assets held for sale, net	0	139,690
Straight-line rent receivables	0	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of December 31, 2020 and 2019, respectively	0	9,425
Accumulated amortization on deferred lease costs	0	34,957
Total other assets held for sale, net	0	28,201
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of December 31, 2020 and 2019, respectively	0	7,657
Accumulated amortization, intangible lease liabilities	0	31,959
Disposal Group, Held-for-sale, Not Discontinued Operations | Intangible Lease Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accumulated amortization, intangible lease assets	0	27,438
Disposal Group, Held-for-sale, Not Discontinued Operations | Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net:	0	20,829
Disposal Group, Held-for-sale, Not Discontinued Operations | Building and building improvements
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net:	0	112,287
Accumulated depreciation, real estate assets held for sale	$ 0	$ 66,823

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Supplemental Disclosures for the Statement of Consolidated Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Accrued capital expenditures and deferred lease costs	$ 20,103	$ 38,366	$ 10,854
Change in accrued dividends and discount on dividend reinvestments	(744)	(545)	(74,828)
Change in accrued share repurchases as part of an announced plan	685	(4,417)	3,140
Notes receivable issued in conjunction with property dispositions	118,500	0	0
Cash and cash equivalents	7,331	13,545	4,571	$ 7,382
Restricted cash and escrows	1,883	1,841	1,463	1,373
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows	$ 9,214	$ 15,386	$ 6,034	$ 8,755

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Income Taxes (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Net income applicable to Piedmont	$ 22,609,000	$ 8,943,000	$ 192,427,000	$ 8,709,000	$ 162,478,000	$ 8,422,000	$ 8,153,000	$ 50,208,000	$ 232,688,000	$ 229,261,000	$ 130,296,000
Depreciation and amortization expense recognized for financial reporting purposes in excess of amounts recognized for income tax purposes									73,784,000	10,381,000	54,420,000
Rental income accrued for income tax purposes less than amounts for financial reporting purposes									(25,726,000)	(34,804,000)	(9,681,000)
Net amortization of above/below-market lease intangibles for income tax purposes in excess of amounts for financial reporting purposes									(11,625,000)	(7,698,000)	(7,453,000)
Gain on disposal of property for financial reporting purposes less than/(in excess of) amounts for income tax purposes									(222,037,000)	(85,463,000)	(36,241,000)
Other expenses, including impairment loss on real estate assets, for financial reporting purposes in excess of/ (less than) amounts for income tax purposes									10,970,000	23,127,000	(37,394,000)
Income tax basis net income, prior to dividends paid deduction									$ 60,898,000	$ 135,390,000	$ 91,794,000
Ordinary income, percent									91.91%	29.82%	100.00%
Return of capital, percent									8.09%	0.00%	0.00%
Capital gains, percent									0.00%	70.18%	0.00%
Common stock dividends, percent									100.00%	100.00%	100.00%
Accrued interest and penalties related to uncertain tax positions	$ 0				$ 1,000,000.0				$ 0	$ 1,000,000.0
Recovery of previously recognized interest and penalties related to taxes									1,000,000.0	1,400,000	$ 1,400,000
Piedmont Washington Properties, Inc
Income Taxes [Line Items]
Taxable income for subsidiary in excess of/(less than) amount for financial reporting purposes									1,345,000	411,000	(2,089,000)
Piedmont Office Holdings, Inc
Income Taxes [Line Items]
Taxable income for subsidiary in excess of/(less than) amount for financial reporting purposes									$ 1,499,000	$ 175,000	$ (64,000)

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Quarterly Results (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 131,529	$ 131,693	$ 134,631	$ 137,171	$ 134,153	$ 135,421	$ 130,668	$ 132,936	$ 535,024	$ 533,178	$ 525,967
Gain/(loss) on sale of real estate assets	14,634	(340)	191,369	3	157,640	32	1,451	37,887	205,666	197,010	75,691
Net income	22,608	8,940	192,426	8,711	162,476	8,419	8,152	50,209	232,685	229,256	130,291
Net income applicable to Piedmont	$ 22,609	$ 8,943	$ 192,427	$ 8,709	$ 162,478	$ 8,422	$ 8,153	$ 50,208	$ 232,688	$ 229,261	$ 130,296
Basic earnings per share (in dollars per share)	$ 0.18	$ 0.07	$ 1.53	$ 0.07
Diluted earnings per share (in dollars per share)	0.18	0.07	1.52	0.07
Basic and diluted earnings per share (in dollars per share)					$ 1.29	$ 0.07	$ 0.06	$ 0.40	$ 1.85	$ 1.82	$ 1.00
Dividends declared (in dollars per share)	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21

XML

Segment Information - Additional Information (Details)	Dec. 31, 2020 property
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of real estate properties	4
Houston
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of real estate properties	2
Chicago
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of real estate properties	1
Other Segments [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of real estate properties	3

XML

Segment Information - Revenue by Geographical Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 131,529	$ 131,693	$ 134,631	$ 137,171	$ 134,153	$ 135,421	$ 130,668	$ 132,936	$ 535,024	$ 533,178	$ 525,967
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									504,406	457,254	424,600
Corporate and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									30,618	75,924	101,367
Dallas | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									101,727	55,346	54,382
Atlanta | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									95,403	75,699	62,282
Washington, D.C. | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									59,760	64,481	68,404
Minneapolis | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									61,465	64,318	57,711
Boston | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									61,338	64,739	54,648
Orlando | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									54,886	57,084	55,440
New York | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues									$ 69,827	$ 75,587	$ 71,733

XML

Segment Reporting - NOI by Geographical Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	$ 319,459	$ 320,624	$ 317,138
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	305,544	276,987	253,489
Corporate and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	13,915	43,637	63,649
Dallas | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	59,845	29,438	29,286
Atlanta | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	60,276	47,287	38,660
Washington, D.C. | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	36,696	41,167	41,565
Minneapolis | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	33,588	35,610	30,402
Boston | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	41,722	44,016	37,887
Orlando | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	34,427	35,433	35,067
New York | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net operating income	$ 38,990	$ 44,036	$ 40,622

XML

Segment Reporting - Reconciliation of GAAP Net Income to NOI (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Net income applicable to Piedmont	$ 22,609	$ 8,943	$ 192,427	$ 8,709	$ 162,478	$ 8,422	$ 8,153	$ 50,208	$ 232,688	$ 229,261	$ 130,296
Management fee revenue									(1,495)	(2,518)	(712)
Depreciation and amortization									203,869	182,682	171,252
Impairment loss on real estate assets									0	8,953	0
General and administrative									27,464	37,895	29,713
Interest expense									54,990	61,594	61,023
Other income									(1,724)	(228)	(418)
Loss on extinguishment of debt									9,336	0	1,680
Gain on sale of real estate assets	$ (14,634)	$ 340	$ (191,369)	$ (3)	$ (157,640)	$ (32)	$ (1,451)	$ (37,887)	(205,666)	(197,010)	(75,691)
Net loss applicable to noncontrolling interests									(3)	(5)	(5)
NOI									$ 319,459	$ 320,624	$ 317,138

XML

Subsequent events (Details) - $ / shares		3 Months Ended
	Feb. 02, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Subsequent Event [Line Items]
Dividends declared (in dollars per share)		$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21
Subsequent Event
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.21

XML

Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020
Real Estate and Accumulated Depreciation [Line Items]
Gross Amount at Which Carried, Total	$ 3,818,287	$ 3,924,531	$ 3,924,531	$ 3,891,426
Accumulated Depreciation and Amortization	875,777	875,777	1,053,467	835,392
Tax basis of total assets				3,300,000
Real Estate:
Balance at the beginning of the year	3,818,287	3,924,531	4,438,209
Additions to/improvements of real estate	493,760	406,832	206,442
Assets disposed	(393,231)	(452,672)	(675,692)
Assets impaired	0	(8,953)	0
Write-offs of intangible assets	(15,891)	(36,428)	(33,067)
Write-offs of fully depreciated/amortized assets	(11,499)	(15,023)	(11,361)
Balance at the end of the year	3,891,426	3,818,287	3,924,531
Accumulated Depreciation and Amortization:
Balance at the beginning of the year	875,777	907,937	1,053,467
Depreciation and amortization expense	142,762	132,600	128,456
Assets disposed	(155,757)	(113,309)	(229,558)
Write-offs of intangible assets	(15,891)	(36,428)	(33,067)
Write-offs of fully depreciated/amortized assets	(11,499)	(15,023)	(11,361)
Balance at the end of the year	$ 835,392	$ 875,777	$ 907,937
Buildings
Real Estate and Accumulated Depreciation [Line Items]
Useful life	40 years
Wholly Owned Properties
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost, Land				459,673
Initial Cost, Buildings and Improvements				3,143,299
Initial Cost, Total				3,602,972
Costs Capitalized Subsequent to Acquisition				288,454
Gross Amount at Which Carried, Land				484,466
Gross Amount at Which Carried, Buildings and Improvements				3,406,960
Gross Amount at Which Carried, Total	$ 3,891,426			3,891,426
Accumulated Depreciation and Amortization	835,392			$ 835,392
Real Estate:
Balance at the end of the year	3,891,426
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 835,392
Minimum | Building improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	5 years
Minimum | Land improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	20 years
Maximum | Building improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	25 years
Maximum | Land improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	25 years
1430 ENCLAVE PARKWAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,100
Initial Cost, Buildings and Improvements				37,915
Initial Cost, Total				45,015
Costs Capitalized Subsequent to Acquisition				6,473
Gross Amount at Which Carried, Land				5,506
Gross Amount at Which Carried, Buildings and Improvements				45,982
Gross Amount at Which Carried, Total	$ 51,488			51,488
Accumulated Depreciation and Amortization	21,321			$ 21,321
Real Estate:
Balance at the end of the year	51,488
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 21,321
1430 ENCLAVE PARKWAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1430 ENCLAVE PARKWAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
CRESCENT RIDGE II
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,700
Initial Cost, Buildings and Improvements				45,154
Initial Cost, Total				52,854
Costs Capitalized Subsequent to Acquisition				12,363
Gross Amount at Which Carried, Land				8,021
Gross Amount at Which Carried, Buildings and Improvements				57,196
Gross Amount at Which Carried, Total	$ 65,217			65,217
Accumulated Depreciation and Amortization	28,532			$ 28,532
Real Estate:
Balance at the end of the year	65,217
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 28,532
CRESCENT RIDGE II | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
CRESCENT RIDGE II | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
90 CENTRAL STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,642
Initial Cost, Buildings and Improvements				29,497
Initial Cost, Total				33,139
Costs Capitalized Subsequent to Acquisition				2,794
Gross Amount at Which Carried, Land				3,642
Gross Amount at Which Carried, Buildings and Improvements				32,291
Gross Amount at Which Carried, Total	$ 35,933			35,933
Accumulated Depreciation and Amortization	14,670			$ 14,670
Real Estate:
Balance at the end of the year	35,933
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 14,670
90 CENTRAL STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
90 CENTRAL STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6031 CONNECTION DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,157
Initial Cost, Buildings and Improvements				43,656
Initial Cost, Total				46,813
Costs Capitalized Subsequent to Acquisition				8,454
Gross Amount at Which Carried, Land				3,157
Gross Amount at Which Carried, Buildings and Improvements				52,110
Gross Amount at Which Carried, Total	$ 55,267			55,267
Accumulated Depreciation and Amortization	22,979			$ 22,979
Real Estate:
Balance at the end of the year	55,267
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 22,979
6031 CONNECTION DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6031 CONNECTION DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6021 CONNECTION DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,157
Initial Cost, Buildings and Improvements				42,662
Initial Cost, Total				45,819
Costs Capitalized Subsequent to Acquisition				11,562
Gross Amount at Which Carried, Land				3,157
Gross Amount at Which Carried, Buildings and Improvements				54,224
Gross Amount at Which Carried, Total	$ 57,381			57,381
Accumulated Depreciation and Amortization	25,875			$ 25,875
Real Estate:
Balance at the end of the year	57,381
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 25,875
6021 CONNECTION DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6021 CONNECTION DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6011 CONNECTION DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,157
Initial Cost, Buildings and Improvements				29,034
Initial Cost, Total				32,191
Costs Capitalized Subsequent to Acquisition				18,524
Gross Amount at Which Carried, Land				3,157
Gross Amount at Which Carried, Buildings and Improvements				47,558
Gross Amount at Which Carried, Total	$ 50,715			50,715
Accumulated Depreciation and Amortization	15,583			$ 15,583
Real Estate:
Balance at the end of the year	50,715
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 15,583
6011 CONNECTION DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6011 CONNECTION DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
US BANCORP CENTER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 11,138
Initial Cost, Buildings and Improvements				175,629
Initial Cost, Total				186,767
Costs Capitalized Subsequent to Acquisition				31,142
Gross Amount at Which Carried, Land				11,138
Gross Amount at Which Carried, Buildings and Improvements				206,771
Gross Amount at Which Carried, Total	$ 217,909			217,909
Accumulated Depreciation and Amortization	91,546			$ 91,546
Real Estate:
Balance at the end of the year	217,909
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 91,546
US BANCORP CENTER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
US BANCORP CENTER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GLENRIDGE HIGHLANDS TWO
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,662
Initial Cost, Buildings and Improvements				69,031
Initial Cost, Total				75,693
Costs Capitalized Subsequent to Acquisition				(15,253)
Gross Amount at Which Carried, Land				6,662
Gross Amount at Which Carried, Buildings and Improvements				53,778
Gross Amount at Which Carried, Total	$ 60,440			60,440
Accumulated Depreciation and Amortization	26,802			$ 26,802
Real Estate:
Balance at the end of the year	60,440
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 26,802
GLENRIDGE HIGHLANDS TWO | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GLENRIDGE HIGHLANDS TWO | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
400 VIRGINIA AVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 22,146
Initial Cost, Buildings and Improvements				49,740
Initial Cost, Total				71,886
Costs Capitalized Subsequent to Acquisition				2,375
Gross Amount at Which Carried, Land				22,146
Gross Amount at Which Carried, Buildings and Improvements				52,115
Gross Amount at Which Carried, Total	$ 74,261			74,261
Accumulated Depreciation and Amortization	21,865			$ 21,865
Real Estate:
Balance at the end of the year	74,261
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 21,865
400 VIRGINIA AVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
400 VIRGINIA AVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
4250 NORTH FAIRFAX DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 13,636
Initial Cost, Buildings and Improvements				70,918
Initial Cost, Total				84,554
Costs Capitalized Subsequent to Acquisition				16,725
Gross Amount at Which Carried, Land				13,636
Gross Amount at Which Carried, Buildings and Improvements				87,643
Gross Amount at Which Carried, Total	$ 101,279			101,279
Accumulated Depreciation and Amortization	36,852			$ 36,852
Real Estate:
Balance at the end of the year	101,279
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 36,852
4250 NORTH FAIRFAX DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
4250 NORTH FAIRFAX DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1225 EYE STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				98.10%
Initial Cost, Land				$ 21,959
Initial Cost, Buildings and Improvements				47,602
Initial Cost, Total				69,561
Costs Capitalized Subsequent to Acquisition				9,758
Gross Amount at Which Carried, Land				21,959
Gross Amount at Which Carried, Buildings and Improvements				57,360
Gross Amount at Which Carried, Total	$ 79,319			79,319
Accumulated Depreciation and Amortization	25,963			$ 25,963
Real Estate:
Balance at the end of the year	79,319
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 25,963
1225 EYE STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1225 EYE STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1201 EYE STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				98.60%
Initial Cost, Land				$ 31,985
Initial Cost, Buildings and Improvements				63,139
Initial Cost, Total				95,124
Costs Capitalized Subsequent to Acquisition				9,768
Gross Amount at Which Carried, Land				31,985
Gross Amount at Which Carried, Buildings and Improvements				72,907
Gross Amount at Which Carried, Total	$ 104,892			104,892
Accumulated Depreciation and Amortization	29,381			$ 29,381
Real Estate:
Balance at the end of the year	104,892
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 29,381
1201 EYE STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1201 EYE STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
60 BROAD STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 32,522
Initial Cost, Buildings and Improvements				168,986
Initial Cost, Total				201,508
Costs Capitalized Subsequent to Acquisition				43,190
Gross Amount at Which Carried, Land				60,708
Gross Amount at Which Carried, Buildings and Improvements				183,990
Gross Amount at Which Carried, Total	$ 244,698			244,698
Accumulated Depreciation and Amortization	62,826			$ 62,826
Real Estate:
Balance at the end of the year	244,698
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 62,826
60 BROAD STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
60 BROAD STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1414 MASSACHUSETTS AVENUE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,210
Initial Cost, Buildings and Improvements				35,821
Initial Cost, Total				40,031
Costs Capitalized Subsequent to Acquisition				(8,031)
Gross Amount at Which Carried, Land				4,365
Gross Amount at Which Carried, Buildings and Improvements				27,635
Gross Amount at Which Carried, Total	$ 32,000			32,000
Accumulated Depreciation and Amortization	11,819			$ 11,819
Real Estate:
Balance at the end of the year	32,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 11,819
1414 MASSACHUSETTS AVENUE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1414 MASSACHUSETTS AVENUE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE BRATTLE SQUARE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,974
Initial Cost, Buildings and Improvements				64,940
Initial Cost, Total				71,914
Costs Capitalized Subsequent to Acquisition				(23,111)
Gross Amount at Which Carried, Land				7,113
Gross Amount at Which Carried, Buildings and Improvements				41,690
Gross Amount at Which Carried, Total	$ 48,803			48,803
Accumulated Depreciation and Amortization	18,286			$ 18,286
Real Estate:
Balance at the end of the year	48,803
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 18,286
ONE BRATTLE SQUARE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE BRATTLE SQUARE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
3100 CLARENDON BOULEVARD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 11,700
Initial Cost, Buildings and Improvements				69,705
Initial Cost, Total				81,405
Costs Capitalized Subsequent to Acquisition				48,835
Gross Amount at Which Carried, Land				11,791
Gross Amount at Which Carried, Buildings and Improvements				118,449
Gross Amount at Which Carried, Total	$ 130,240			130,240
Accumulated Depreciation and Amortization	38,772			$ 38,772
Real Estate:
Balance at the end of the year	130,240
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 38,772
3100 CLARENDON BOULEVARD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
3100 CLARENDON BOULEVARD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
LAS COLINAS CORPORATE CENTER I
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,912
Initial Cost, Buildings and Improvements				18,830
Initial Cost, Total				22,742
Costs Capitalized Subsequent to Acquisition				(3,316)
Gross Amount at Which Carried, Land				2,543
Gross Amount at Which Carried, Buildings and Improvements				16,883
Gross Amount at Which Carried, Total	$ 19,426			19,426
Accumulated Depreciation and Amortization	6,775			$ 6,775
Real Estate:
Balance at the end of the year	19,426
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,775
LAS COLINAS CORPORATE CENTER I | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
LAS COLINAS CORPORATE CENTER I | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
LAS COLINAS CORPORATE CENTER II
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,496
Initial Cost, Buildings and Improvements				29,881
Initial Cost, Total				34,377
Costs Capitalized Subsequent to Acquisition				(2,047)
Gross Amount at Which Carried, Land				2,543
Gross Amount at Which Carried, Buildings and Improvements				29,787
Gross Amount at Which Carried, Total	$ 32,330			32,330
Accumulated Depreciation and Amortization	12,272			$ 12,272
Real Estate:
Balance at the end of the year	32,330
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 12,272
LAS COLINAS CORPORATE CENTER II | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
LAS COLINAS CORPORATE CENTER II | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
TWO PIERCE PLACE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,370
Initial Cost, Buildings and Improvements				70,632
Initial Cost, Total				75,002
Costs Capitalized Subsequent to Acquisition				12,528
Gross Amount at Which Carried, Land				8,156
Gross Amount at Which Carried, Buildings and Improvements				79,374
Gross Amount at Which Carried, Total	$ 87,530			87,530
Accumulated Depreciation and Amortization	25,018			$ 25,018
Real Estate:
Balance at the end of the year	87,530
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 25,018
TWO PIERCE PLACE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
TWO PIERCE PLACE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE MERIDIAN CROSSINGS
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,919
Initial Cost, Buildings and Improvements				24,398
Initial Cost, Total				27,317
Costs Capitalized Subsequent to Acquisition				621
Gross Amount at Which Carried, Land				2,919
Gross Amount at Which Carried, Buildings and Improvements				25,019
Gross Amount at Which Carried, Total	$ 27,938			27,938
Accumulated Depreciation and Amortization	7,170			$ 7,170
Real Estate:
Balance at the end of the year	27,938
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,170
ONE MERIDIAN CROSSINGS | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE MERIDIAN CROSSINGS | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
TWO MERIDIAN CROSSINGS
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,661
Initial Cost, Buildings and Improvements				25,742
Initial Cost, Total				28,403
Costs Capitalized Subsequent to Acquisition				839
Gross Amount at Which Carried, Land				2,661
Gross Amount at Which Carried, Buildings and Improvements				26,581
Gross Amount at Which Carried, Total	$ 29,242			29,242
Accumulated Depreciation and Amortization	7,636			$ 7,636
Real Estate:
Balance at the end of the year	29,242
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,636
TWO MERIDIAN CROSSINGS | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
TWO MERIDIAN CROSSINGS | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
THE MEDICI
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,780
Initial Cost, Buildings and Improvements				11,510
Initial Cost, Total				13,290
Costs Capitalized Subsequent to Acquisition				5,632
Gross Amount at Which Carried, Land				1,780
Gross Amount at Which Carried, Buildings and Improvements				17,142
Gross Amount at Which Carried, Total	$ 18,922			18,922
Accumulated Depreciation and Amortization	6,325			$ 6,325
Real Estate:
Balance at the end of the year	18,922
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,325
THE MEDICI | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
THE MEDICI | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
225 PRESIDENTIAL WAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,626
Initial Cost, Buildings and Improvements				36,916
Initial Cost, Total				40,542
Costs Capitalized Subsequent to Acquisition				(5,419)
Gross Amount at Which Carried, Land				3,612
Gross Amount at Which Carried, Buildings and Improvements				31,511
Gross Amount at Which Carried, Total	$ 35,123			35,123
Accumulated Depreciation and Amortization	7,363			$ 7,363
Real Estate:
Balance at the end of the year	35,123
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,363
225 PRESIDENTIAL WAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
225 PRESIDENTIAL WAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
235 PRESIDENTIAL WAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,154
Initial Cost, Buildings and Improvements				44,048
Initial Cost, Total				48,202
Costs Capitalized Subsequent to Acquisition				(6,851)
Gross Amount at Which Carried, Land				4,138
Gross Amount at Which Carried, Buildings and Improvements				37,213
Gross Amount at Which Carried, Total	$ 41,351			41,351
Accumulated Depreciation and Amortization	8,659			$ 8,659
Real Estate:
Balance at the end of the year	41,351
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,659
235 PRESIDENTIAL WAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
235 PRESIDENTIAL WAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
400 TOWNPARK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,570
Initial Cost, Buildings and Improvements				20,555
Initial Cost, Total				23,125
Costs Capitalized Subsequent to Acquisition				5,634
Gross Amount at Which Carried, Land				2,570
Gross Amount at Which Carried, Buildings and Improvements				26,189
Gross Amount at Which Carried, Total	$ 28,759			28,759
Accumulated Depreciation and Amortization	8,063			$ 8,063
Real Estate:
Balance at the end of the year	28,759
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,063
400 TOWNPARK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
400 TOWNPARK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ARLINGTON GATEWAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 36,930
Initial Cost, Buildings and Improvements				129,070
Initial Cost, Total				166,000
Costs Capitalized Subsequent to Acquisition				917
Gross Amount at Which Carried, Land				36,930
Gross Amount at Which Carried, Buildings and Improvements				129,987
Gross Amount at Which Carried, Total	$ 166,917			166,917
Accumulated Depreciation and Amortization	27,497			$ 27,497
Real Estate:
Balance at the end of the year	166,917
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 27,497
ARLINGTON GATEWAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ARLINGTON GATEWAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
5 & 15 WAYSIDE ROAD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,190
Initial Cost, Buildings and Improvements				55,445
Initial Cost, Total				62,635
Costs Capitalized Subsequent to Acquisition				6,463
Gross Amount at Which Carried, Land				7,190
Gross Amount at Which Carried, Buildings and Improvements				61,908
Gross Amount at Which Carried, Total	$ 69,098			69,098
Accumulated Depreciation and Amortization	14,471			$ 14,471
Real Estate:
Balance at the end of the year	69,098
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 14,471
5 & 15 WAYSIDE ROAD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
5 & 15 WAYSIDE ROAD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6565 MACARTHUR BOULEVARD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,820
Initial Cost, Buildings and Improvements				37,767
Initial Cost, Total				42,587
Costs Capitalized Subsequent to Acquisition				726
Gross Amount at Which Carried, Land				4,820
Gross Amount at Which Carried, Buildings and Improvements				38,493
Gross Amount at Which Carried, Total	$ 43,313			43,313
Accumulated Depreciation and Amortization	8,203			$ 8,203
Real Estate:
Balance at the end of the year	43,313
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,203
6565 MACARTHUR BOULEVARD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6565 MACARTHUR BOULEVARD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE LINCOLN PARK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,640
Initial Cost, Buildings and Improvements				44,810
Initial Cost, Total				51,450
Costs Capitalized Subsequent to Acquisition				2,469
Gross Amount at Which Carried, Land				6,640
Gross Amount at Which Carried, Buildings and Improvements				47,279
Gross Amount at Which Carried, Total	$ 53,919			53,919
Accumulated Depreciation and Amortization	10,939			$ 10,939
Real Estate:
Balance at the end of the year	53,919
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 10,939
ONE LINCOLN PARK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE LINCOLN PARK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
161 CORPORATE CENTER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,020
Initial Cost, Buildings and Improvements				10,680
Initial Cost, Total				12,700
Costs Capitalized Subsequent to Acquisition				(467)
Gross Amount at Which Carried, Land				2,020
Gross Amount at Which Carried, Buildings and Improvements				10,213
Gross Amount at Which Carried, Total	$ 12,233			12,233
Accumulated Depreciation and Amortization	2,786			$ 2,786
Real Estate:
Balance at the end of the year	12,233
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,786
161 CORPORATE CENTER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
161 CORPORATE CENTER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
5 WALL STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Encumbrances				$ 27,610
Initial Cost, Land				9,560
Initial Cost, Buildings and Improvements				50,276
Initial Cost, Total				59,836
Costs Capitalized Subsequent to Acquisition				(2,212)
Gross Amount at Which Carried, Land				9,560
Gross Amount at Which Carried, Buildings and Improvements				48,064
Gross Amount at Which Carried, Total	$ 57,624			57,624
Accumulated Depreciation and Amortization	8,813			$ 8,813
Real Estate:
Balance at the end of the year	57,624
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,813
5 WALL STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
5 WALL STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1155 PERIMETER CENTER WEST
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,870
Initial Cost, Buildings and Improvements				66,849
Initial Cost, Total				72,719
Costs Capitalized Subsequent to Acquisition				5,879
Gross Amount at Which Carried, Land				5,870
Gross Amount at Which Carried, Buildings and Improvements				72,728
Gross Amount at Which Carried, Total	$ 78,598			78,598
Accumulated Depreciation and Amortization	12,934			$ 12,934
Real Estate:
Balance at the end of the year	78,598
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 12,934
1155 PERIMETER CENTER WEST | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1155 PERIMETER CENTER WEST | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
500 TOWNPARK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,147
Initial Cost, Buildings and Improvements				21,925
Initial Cost, Total				24,072
Costs Capitalized Subsequent to Acquisition				4,092
Gross Amount at Which Carried, Land				2,147
Gross Amount at Which Carried, Buildings and Improvements				26,017
Gross Amount at Which Carried, Total	$ 28,164			28,164
Accumulated Depreciation and Amortization	3,522			$ 3,522
Real Estate:
Balance at the end of the year	28,164
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 3,522
500 TOWNPARK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
500 TOWNPARK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
PARK PLACE ON TURTLE CREEK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,470
Initial Cost, Buildings and Improvements				38,048
Initial Cost, Total				42,518
Costs Capitalized Subsequent to Acquisition				4,117
Gross Amount at Which Carried, Land				4,470
Gross Amount at Which Carried, Buildings and Improvements				42,165
Gross Amount at Which Carried, Total	$ 46,635			46,635
Accumulated Depreciation and Amortization	7,564			$ 7,564
Real Estate:
Balance at the end of the year	46,635
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,564
PARK PLACE ON TURTLE CREEK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
PARK PLACE ON TURTLE CREEK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
80 CENTRAL STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,980
Initial Cost, Buildings and Improvements				8,930
Initial Cost, Total				10,910
Costs Capitalized Subsequent to Acquisition				3,731
Gross Amount at Which Carried, Land				1,980
Gross Amount at Which Carried, Buildings and Improvements				12,661
Gross Amount at Which Carried, Total	$ 14,641			14,641
Accumulated Depreciation and Amortization	2,050			$ 2,050
Real Estate:
Balance at the end of the year	14,641
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,050
80 CENTRAL STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
80 CENTRAL STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ENCLAVE PLACE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,890
Initial Cost, Buildings and Improvements				60,094
Initial Cost, Total				61,984
Costs Capitalized Subsequent to Acquisition				35,319
Gross Amount at Which Carried, Land				1,890
Gross Amount at Which Carried, Buildings and Improvements				95,413
Gross Amount at Which Carried, Total	$ 97,303			97,303
Accumulated Depreciation and Amortization	10,591			$ 10,591
Real Estate:
Balance at the end of the year	97,303
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 10,591
ENCLAVE PLACE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ENCLAVE PLACE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
SUNTRUST CENTER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 11,660
Initial Cost, Buildings and Improvements				139,015
Initial Cost, Total				150,675
Costs Capitalized Subsequent to Acquisition				20,653
Gross Amount at Which Carried, Land				11,660
Gross Amount at Which Carried, Buildings and Improvements				159,668
Gross Amount at Which Carried, Total	$ 171,328			171,328
Accumulated Depreciation and Amortization	22,127			$ 22,127
Real Estate:
Balance at the end of the year	171,328
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 22,127
SUNTRUST CENTER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
SUNTRUST CENTER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 300
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,000
Initial Cost, Buildings and Improvements				73,554
Initial Cost, Total				77,554
Costs Capitalized Subsequent to Acquisition				6,799
Gross Amount at Which Carried, Land				4,000
Gross Amount at Which Carried, Buildings and Improvements				80,353
Gross Amount at Which Carried, Total	$ 84,353			84,353
Accumulated Depreciation and Amortization	14,130			$ 14,130
Real Estate:
Balance at the end of the year	84,353
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 14,130
GALLERIA 300 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 300 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GLENRIDGE HIGHLANDS ONE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,960
Initial Cost, Buildings and Improvements				50,013
Initial Cost, Total				55,973
Costs Capitalized Subsequent to Acquisition				3,381
Gross Amount at Which Carried, Land				5,960
Gross Amount at Which Carried, Buildings and Improvements				53,394
Gross Amount at Which Carried, Total	$ 59,354			59,354
Accumulated Depreciation and Amortization	8,796			$ 8,796
Real Estate:
Balance at the end of the year	59,354
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,796
GLENRIDGE HIGHLANDS ONE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GLENRIDGE HIGHLANDS ONE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
CNL CENTER I
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				99.00%
Initial Cost, Land				$ 6,470
Initial Cost, Buildings and Improvements				77,858
Initial Cost, Total				84,328
Costs Capitalized Subsequent to Acquisition				(20)
Gross Amount at Which Carried, Land				6,470
Gross Amount at Which Carried, Buildings and Improvements				77,838
Gross Amount at Which Carried, Total	$ 84,308			84,308
Accumulated Depreciation and Amortization	11,639			$ 11,639
Real Estate:
Balance at the end of the year	84,308
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 11,639
CNL CENTER I | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
CNL CENTER I | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
CNL CENTER II
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				99.00%
Initial Cost, Land				$ 4,550
Initial Cost, Buildings and Improvements				55,609
Initial Cost, Total				60,159
Costs Capitalized Subsequent to Acquisition				862
Gross Amount at Which Carried, Land				4,550
Gross Amount at Which Carried, Buildings and Improvements				56,471
Gross Amount at Which Carried, Total	$ 61,021			61,021
Accumulated Depreciation and Amortization	9,869			$ 9,869
Real Estate:
Balance at the end of the year	61,021
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 9,869
CNL CENTER II | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
CNL CENTER II | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE WAYSIDE ROAD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,240
Initial Cost, Buildings and Improvements				57,124
Initial Cost, Total				63,364
Costs Capitalized Subsequent to Acquisition				(4,471)
Gross Amount at Which Carried, Land				6,240
Gross Amount at Which Carried, Buildings and Improvements				52,653
Gross Amount at Which Carried, Total	$ 58,893			58,893
Accumulated Depreciation and Amortization	6,455			$ 6,455
Real Estate:
Balance at the end of the year	58,893
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,455
ONE WAYSIDE ROAD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE WAYSIDE ROAD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 200
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,470
Initial Cost, Buildings and Improvements				55,825
Initial Cost, Total				62,295
Costs Capitalized Subsequent to Acquisition				9,738
Gross Amount at Which Carried, Land				6,470
Gross Amount at Which Carried, Buildings and Improvements				65,563
Gross Amount at Which Carried, Total	$ 72,033			72,033
Accumulated Depreciation and Amortization	8,642			$ 8,642
Real Estate:
Balance at the end of the year	72,033
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,642
GALLERIA 200 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 200 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
750 WEST JOHN CARPENTER FREEWAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,860
Initial Cost, Buildings and Improvements				36,303
Initial Cost, Total				44,163
Costs Capitalized Subsequent to Acquisition				2,914
Gross Amount at Which Carried, Land				7,860
Gross Amount at Which Carried, Buildings and Improvements				39,217
Gross Amount at Which Carried, Total	$ 47,077			47,077
Accumulated Depreciation and Amortization	8,445			$ 8,445
Real Estate:
Balance at the end of the year	47,077
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,445
750 WEST JOHN CARPENTER FREEWAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
750 WEST JOHN CARPENTER FREEWAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
NORMAN POINTE I
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,358
Initial Cost, Buildings and Improvements				22,322
Initial Cost, Total				26,680
Costs Capitalized Subsequent to Acquisition				3,917
Gross Amount at Which Carried, Land				4,360
Gross Amount at Which Carried, Buildings and Improvements				26,237
Gross Amount at Which Carried, Total	$ 30,597			30,597
Accumulated Depreciation and Amortization	3,384			$ 3,384
Real Estate:
Balance at the end of the year	30,597
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 3,384
NORMAN POINTE I | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
NORMAN POINTE I | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
501 WEST CHURCH STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,805
Initial Cost, Buildings and Improvements				28,119
Initial Cost, Total				30,924
Costs Capitalized Subsequent to Acquisition				0
Gross Amount at Which Carried, Land				2,805
Gross Amount at Which Carried, Buildings and Improvements				28,119
Gross Amount at Which Carried, Total	$ 30,924			30,924
Accumulated Depreciation and Amortization	3,396			$ 3,396
Real Estate:
Balance at the end of the year	30,924
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 3,396
501 WEST CHURCH STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
501 WEST CHURCH STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
9320 EXCELSIOR BOULEVARD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,760
Initial Cost, Buildings and Improvements				35,289
Initial Cost, Total				39,049
Costs Capitalized Subsequent to Acquisition				(553)
Gross Amount at Which Carried, Land				3,707
Gross Amount at Which Carried, Buildings and Improvements				34,789
Gross Amount at Which Carried, Total	$ 38,496			38,496
Accumulated Depreciation and Amortization	4,531			$ 4,531
Real Estate:
Balance at the end of the year	38,496
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 4,531
9320 EXCELSIOR BOULEVARD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
9320 EXCELSIOR BOULEVARD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
25 BURLINGTON MALL ROAD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 10,230
Initial Cost, Buildings and Improvements				54,787
Initial Cost, Total				65,017
Costs Capitalized Subsequent to Acquisition				(2,543)
Gross Amount at Which Carried, Land				10,230
Gross Amount at Which Carried, Buildings and Improvements				52,244
Gross Amount at Which Carried, Total	$ 62,474			62,474
Accumulated Depreciation and Amortization	5,942			$ 5,942
Real Estate:
Balance at the end of the year	62,474
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,942
25 BURLINGTON MALL ROAD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
25 BURLINGTON MALL ROAD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 100
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,285
Initial Cost, Buildings and Improvements				72,449
Initial Cost, Total				79,734
Costs Capitalized Subsequent to Acquisition				488
Gross Amount at Which Carried, Land				7,285
Gross Amount at Which Carried, Buildings and Improvements				72,937
Gross Amount at Which Carried, Total	$ 80,222			80,222
Accumulated Depreciation and Amortization	7,238			$ 7,238
Real Estate:
Balance at the end of the year	80,222
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,238
GALLERIA 100 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 100 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 400
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,687
Initial Cost, Buildings and Improvements				92,915
Initial Cost, Total				98,602
Costs Capitalized Subsequent to Acquisition				698
Gross Amount at Which Carried, Land				5,687
Gross Amount at Which Carried, Buildings and Improvements				93,613
Gross Amount at Which Carried, Total	$ 99,300			99,300
Accumulated Depreciation and Amortization	5,605			$ 5,605
Real Estate:
Balance at the end of the year	99,300
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,605
GALLERIA 400 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 400 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 600
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,418
Initial Cost, Buildings and Improvements				81,003
Initial Cost, Total				86,421
Costs Capitalized Subsequent to Acquisition				9
Gross Amount at Which Carried, Land				5,418
Gross Amount at Which Carried, Buildings and Improvements				81,012
Gross Amount at Which Carried, Total	$ 86,430			86,430
Accumulated Depreciation and Amortization	5,135			$ 5,135
Real Estate:
Balance at the end of the year	86,430
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,135
GALLERIA 600 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 600 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE GALLERIA TOWER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,286
Initial Cost, Buildings and Improvements				107,767
Initial Cost, Total				113,053
Costs Capitalized Subsequent to Acquisition				982
Gross Amount at Which Carried, Land				5,286
Gross Amount at Which Carried, Buildings and Improvements				108,749
Gross Amount at Which Carried, Total	$ 114,035			114,035
Accumulated Depreciation and Amortization	5,933			$ 5,933
Real Estate:
Balance at the end of the year	114,035
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,933
ONE GALLERIA TOWER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE GALLERIA TOWER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
TWO GALLERIA TOWER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,835
Initial Cost, Buildings and Improvements				109,605
Initial Cost, Total				113,440
Costs Capitalized Subsequent to Acquisition				545
Gross Amount at Which Carried, Land				3,836
Gross Amount at Which Carried, Buildings and Improvements				110,149
Gross Amount at Which Carried, Total	$ 113,985			113,985
Accumulated Depreciation and Amortization	6,061			$ 6,061
Real Estate:
Balance at the end of the year	113,985
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,061
TWO GALLERIA TOWER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
TWO GALLERIA TOWER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
THREE GALLERIA TOWER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,541
Initial Cost, Buildings and Improvements				125,490
Initial Cost, Total				132,031
Costs Capitalized Subsequent to Acquisition				312
Gross Amount at Which Carried, Land				6,541
Gross Amount at Which Carried, Buildings and Improvements				125,802
Gross Amount at Which Carried, Total	$ 132,343			132,343
Accumulated Depreciation and Amortization	5,895			$ 5,895
Real Estate:
Balance at the end of the year	132,343
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,895
THREE GALLERIA TOWER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
THREE GALLERIA TOWER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
222 SOUTH ORANGE AVENUE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,899
Initial Cost, Buildings and Improvements				18,417
Initial Cost, Total				20,316
Costs Capitalized Subsequent to Acquisition				157
Gross Amount at Which Carried, Land				1,899
Gross Amount at Which Carried, Buildings and Improvements				18,574
Gross Amount at Which Carried, Total	$ 20,473			20,473
Accumulated Depreciation and Amortization	0			$ 0
Real Estate:
Balance at the end of the year	20,473
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 0
222 SOUTH ORANGE AVENUE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
222 SOUTH ORANGE AVENUE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
UNDEVELOPED LAND PARCELS
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 44,509
Initial Cost, Buildings and Improvements				0
Initial Cost, Total				44,509
Costs Capitalized Subsequent to Acquisition				363
Gross Amount at Which Carried, Land				41,620
Gross Amount at Which Carried, Buildings and Improvements				3,252
Gross Amount at Which Carried, Total	$ 44,872			44,872
Accumulated Depreciation and Amortization	446			$ 446
Real Estate:
Balance at the end of the year	44,872
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 446

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Label	Element	Value
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201601Member