10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________________ 

FORM 10-Q

__________________________________ 

(Mark One)

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

for the quarterly period ended March 31, 2016

OR

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

for the transition period from ______ to ______

Commission file number 001-36113

COLUMBIA PROPERTY TRUST, INC.

(Exact name of registrant as specified in its charter)

__________________________________

Maryland	20-0068852
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

One Glenlake Parkway, Suite 1200

Atlanta, GA 30328

(Address of principal executive offices)

(Zip Code)

(404) 465-2200

(Registrant's telephone number, including area code)

(Former name, former address, and former fiscal year, if changed since last report)

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  x    No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

  Yes  x  No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of "large accelerated filer", "accelerated filer", and "smaller reporting company" in Rule 12b-2 of the Exchange Act (check one).

Large accelerated filer	x	Accelerated filer	o
Non-accelerated filer	o (Do not check if a smaller reporting company)	Smaller reporting company	o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes  o    No  x

Number of shares outstanding of the registrant's

only class of common stock, as of April 25, 2016: 123,467,080 shares

FORM 10-Q

COLUMBIA PROPERTY TRUST, INC.

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION		Page No.
Item 1.	Condensed Consolidated Financial Statements	Page 4
	Consolidated Balance Sheets as of March 31, 2016 (unaudited) and December 31, 2015 (unaudited)	Page 5
	Consolidated Statements of Operations for the Three Months Ended March 31, 2016 (unaudited) and 2015 (unaudited)	Page 6
	Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2016 (unaudited) and 2015 (unaudited)	Page 7
	Consolidated Statements of Equity for the Three Months Ended March 31, 2016 (unaudited) and 2015 (unaudited)	Page 8
	Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2016 (unaudited) and 2015 (unaudited)	Page 9
	Condensed Notes to Consolidated Financial Statements (unaudited)	Page 10
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	Page 29
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	Page 39
Item 4.	Controls and Procedures	Page 40
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	Page 41
Item 1A.	Risk Factors	Page 41
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	Page 41
Item 3.	Defaults Upon Senior Securities	Page 41
Item 4.	Mine Safety Disclosures	Page 41
Item 5.	Other Information	Page 41
Item 6.	Exhibits	Page 41

Page 2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements contained in this Quarterly Report on Form 10-Q of Columbia Property Trust, Inc. ("Columbia Property Trust," "the Company," "we," "our," or "us") other than historical facts may be considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. We intend for all such forward-looking statements to be covered by the applicable safe harbor provisions for forward-looking statements contained in those acts. Such statements include, in particular, statements about our plans, strategies, and prospects and are subject to certain risks and uncertainties, including known and unknown risks, which could cause actual results to differ materially from those projected or anticipated. Therefore, such statements are not intended to be a guarantee of our performance in future periods. Such forward-looking statements can generally be identified by our use of forward-looking terminology such as "may," "will," "expect," "intend," "anticipate," "estimate," "believe," "continue," or other similar words. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date this report is filed with the U.S. Securities and Exchange Commission ("SEC"). We make no representations or warranties (express or implied) about the accuracy of any such forward-looking statements contained in this Form 10-Q, and we do not intend to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.

Any such forward-looking statements are subject to risks, uncertainties, and other factors and are based on a number of assumptions involving judgments with respect to, among other things, future economic, competitive, and market conditions, all of which are difficult or impossible to predict accurately. To the extent that our assumptions differ from actual conditions, our ability to accurately anticipate results expressed in such forward-looking statements, including our ability to generate positive cash flow from operations, make distributions to stockholders, and maintain the value of our real estate properties, may be significantly hindered. See Item 1A in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2015 for a discussion of some of the risks and uncertainties that could cause actual results to differ materially from those presented in our forward-looking statements. The risk factors described in our Annual Report are not the only ones we face, but do represent those risks and uncertainties that we believe are material to us. Additional risks and uncertainties not currently known to us or that we currently deem immaterial may also harm our business.

Page 3

PART I. FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The information furnished in the accompanying consolidated balance sheets, and related consolidated statements of operations, comprehensive income, equity, and cash flows, reflects all normal and recurring adjustments that are, in management's opinion, necessary for a fair and consistent presentation of the aforementioned financial statements. The accompanying consolidated financial statements should be read in conjunction with the condensed notes to Columbia Property Trust's financial statements and Management's Discussion and Analysis of Financial Condition and Results of Operations included in this Quarterly Report on Form 10-Q, and with Columbia Property Trust's Annual Report on Form 10-K filed for the year ended December 31, 2015. Columbia Property Trust's results of operations for the three months endedMarch 31, 2016 are not necessarily indicative of the operating results expected for the full year.

Page 4

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED BALANCE SHEETS

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

	(Unaudited)
	March 31, 2016			December 31, 2015
Assets:
Real estate assets, at cost:
Land	$	864,690		$	896,467
Buildings and improvements, less accumulated depreciation of $584,830 and $613,639, as of March 31, 2016 and December 31, 2015, respectively	2,790,003			2,897,431
Intangible lease assets, less accumulated amortization of $244,578 and $250,085, as of March 31, 2016 and December 31, 2015, respectively	245,783			259,136
Construction in progress	11,223			31,847
Total real estate assets	3,911,699			4,084,881
Investment in unconsolidated joint venture	121,784			118,695
Cash and cash equivalents	185,376			32,645
Tenant receivables, net of allowance for doubtful accounts of $530 and $8 as of March 31, 2016 and December 31, 2015, respectively	11,731			11,670
Straight-line rent receivable	103,367			109,062
Prepaid expenses and other assets	35,779			35,848
Intangible lease origination costs, less accumulated amortization of $174,180 and $181,482, as of March 31, 2016 and December 31, 2015, respectively	70,560			77,190
Deferred lease costs, less accumulated amortization of $38,808 and $40,817, as of March 31, 2016 and December 31, 2015, respectively	74,502			88,127
Investment in development authority bonds	120,000			120,000
Total assets	$	4,634,798		$	4,678,118
Liabilities:
Line of credit and notes payable, net of deferred financing costs of $4,044 and $4,492, as of March 31, 2016 and December 31, 2015, respectively	$	1,204,678		$	1,130,571
Bonds payable, net of discounts of $945and $1,020 and deferred financing costs of $3,546 and $3,721, as of March 31, 2016 and December 31, 2015, respectively	595,509			595,259
Accounts payable, accrued expenses, and accrued capital expenditures	85,351			98,759
Dividends payable	—			37,354
Deferred income	21,886			24,814
Intangible lease liabilities, less accumulated amortization of $82,098 and $81,496, as of March 31, 2016 and December 31, 2015, respectively	53,154			57,167
Obligations under capital leases	120,000			120,000
Total liabilities	2,080,578			2,063,924
Commitments and Contingencies (Note 7)	—			—
Equity:
Common stock, $0.01 par value, 225,000,000 shares authorized, 123,458,960 and 124,363,073 shares issued and outstanding as of March 31, 2016 and December 31, 2015, respectively	1,234			1,243
Additional paid-in capital	4,563,537			4,588,303
Cumulative distributions in excess of earnings	(2,003,258		)	(1,972,916		)
Cumulative other comprehensive loss	(7,293		)	(2,436		)
Total equity	2,554,220			2,614,194
Total liabilities and equity	$	4,634,798		$	4,678,118

See accompanying notes.

Page 5

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per-share amounts)

	(Unaudited)
	Three Months Ended March 31,
	2016			2015
Revenues:
Rental income	$	99,586		$	112,809
Tenant reimbursements	19,753			28,249
Hotel income	4,663			4,993
Other property income	2,577			1,492
	126,579			147,543
Expenses:
Property operating costs	41,336			49,754
Hotel operating costs	4,331			4,591
Asset and property management fees	330			397
Depreciation	29,289			34,007
Amortization	16,075			23,219
General and administrative	10,490			8,044
Acquisition expenses	—			1,995
	101,851			122,007
Real estate operating income	24,728			25,536
Other income (expense):
Interest expense	(17,897		)	(21,484		)
Interest and other income	1,805			1,833
Loss on interest rate swaps	—			(6		)
Loss on early extinguishment of debt	—			(477		)
	(16,092		)	(20,134		)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	8,636			5,402
Income tax benefit (expense)	(77		)	196
Loss from unconsolidated joint venture	(1,552		)	—
Income before loss on sale of real estate	7,007			5,598
Loss on sale of real estate	(310		)	—
Net income	$	6,697		$	5,598
Per-share information – basic:
Net income	$	0.05		$	0.04
Weighted-average common shares outstanding – basic	123,393			124,903
Per-share information – diluted:
Net income	$	0.05		$	0.04
Weighted-average common shares outstanding – diluted	123,412			124,935
Dividends per share	$	0.30		$	0.30

See accompanying notes.

Page 6

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	(Unaudited)
	Three Months Ended March 31,
	2016			2015
Net income	$	6,697		$	5,598
Market value adjustments to interest rate swaps	(4,857		)	159
Comprehensive income	$	1,840		$	5,757

See accompanying notes.

Page 7

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF EQUITY

FOR THE THREE MONTHS ENDED MARCH 31, 2016 AND 2015 (UNAUDITED)

(in thousands, except per-share amounts)

	Stockholders' Equity
	Common Stock					Additional Paid-In Capital			Cumulative Distributions in Excess of Earnings			Cumulative Other Comprehensive Loss			Total Equity
	Shares		Amount
Balance, December 31, 2015	124,363		$	1,243		$	4,588,303		$	(1,972,916	)	$	(2,436	)	$	2,614,194
Redemptions of common stock	(1,105	)	(11		)	(24,989		)	—			—			(25,000		)
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	201		2			223			—			—			225
Distributions to common stockholders ($0.30 per share)	—		—			—			(37,039		)	—			(37,039		)
Net income	—		—			—			6,697			—			6,697
Market value adjustment to interest rate swap	—		—			—			—			(4,857		)	(4,857		)
Balance, March 31, 2016	123,459		$	1,234		$	4,563,537		$	(2,003,258	)	$	(7,293	)	$	2,554,220

	Stockholders' Equity
	Common Stock			Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings			Cumulative Other Comprehensive Income (Loss)			Total  Equity
	Shares	Amount
Balance, December 31, 2014	124,973	$	1,249	$	4,601,808	$	(1,867,611	)	$	(1,968	)	$	2,733,478
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	104	1		393		—			—			394
Distributions to common stockholders ($0.30 per share)	—	—		—		(37,523		)	—			(37,523		)
Net income	—	—		—		5,598			—			5,598
Market value adjustment to interest rate swap	—	—		—		—			159			159
Balance, March 31, 2015	125,077	$	1,250	$	4,602,201	$	(1,899,536	)	$	(1,809	)	$	2,702,106

See accompanying notes.

Page 8

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	(Unaudited)
	Three Months Ended March 31,
	2016			2015
Cash Flows from Operating Activities:
Net income	$	6,697		$	5,598
Adjustments to reconcile net income to net cash provided by operating activities:
Straight-line rental income	(6,168		)	(5,064		)
Depreciation	29,289			34,007
Amortization	14,753			20,477
Noncash interest expense	1,012			1,069
Loss on early extinguishment of debt	—			477
Gain on interest rate swaps	—			(1,315		)
Loss from unconsolidated joint venture	1,552			—
Loss on sale of real estate	310			—
Stock-based compensation expense	1,382			1,014
Changes in assets and liabilities, net of acquisitions:
Decrease (increase) in tenant receivables, net	798			(3,935		)
Increase in prepaid expenses and other assets	(244		)	(1,295		)
Decrease in accounts payable and accrued expenses	(3,613		)	(7,436		)
Increase (decrease) in deferred income	(2,928		)	935
Net cash provided by operating activities	42,840			44,532
Cash Flows from Investing Activities:
Net proceeds from the sale of real estate	159,406			—
Real estate acquisitions	—			(551,277		)
Capital improvements	(14,295		)	(17,256		)
Deferred lease costs paid	(3,683		)	(6,804		)
Investments in unconsolidated joint venture	(4,641		)	—
Net cash provided by (used in) investing activities	136,787			(575,337		)
Cash Flows from Financing Activities:
Financing costs paid	—			(3,429		)
Proceeds from lines of credit and notes payable	131,000			463,000
Repayments of lines of credit and notes payable	(57,341		)	(358,684		)
Proceeds from issuance of bonds payable	—			349,507
Distributions paid to stockholders	(74,393		)	(37,523		)
Redemptions of common stock	(26,162		)	(620		)
Net cash provided by (used in) financing activities	(26,896		)	412,251
Net increase (decrease) in cash and cash equivalents	152,731			(118,554		)
Cash and cash equivalents, beginning of period	32,645			149,790
Cash and cash equivalents, end of period	$	185,376		$	31,236

See accompanying notes.

Page 9

COLUMBIA PROPERTY TRUST, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

MARCH 31, 2016

(unaudited)

1. Organization

Columbia Property Trust, Inc. ("Columbia Property Trust") (NYSE: CXP) is a Maryland corporation that operates as a real estate investment trust ("REIT") for federal income tax purposes and owns and operates commercial real estate properties. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, develops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, or through joint ventures. References to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect, and any unconsolidated joint ventures.

Columbia Property Trust typically invests in high-quality, income-generating office properties. As of March 31, 2016, Columbia Property Trust owned 26 office properties and one hotel, containing approximately 13.3 million square feet of commercial space, located in 12 states and the District of Columbia. All of the properties are wholly owned, except for one property, which is owned through an unconsolidated joint venture, as described in Note 4, Unconsolidated Joint Venture. As of March 31, 2016, the office properties, including Columbia Property Trust's share of the unconsolidated joint venture, were approximately 92.4% leased.

2. Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles ("GAAP") for complete financial statements. In the opinion of management, the statements for these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation. For further information, refer to the financial statements and footnotes included in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2015 (the "2015 Form 10-K").

Fair Value Measurements

Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:

Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.

Level 2 – Assets or liabilities valued based on observable market data for similar instruments.

Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.

Page 10

Real Estate Assets

Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building and site improvements	5-25 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of Real Estate Assets

Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets and liabilities may not be recoverable, Columbia Property Trust assesses the recoverability of these assets and liabilities by determining whether the respective carrying values will be recovered through the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets and liabilities to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of Columbia Property Trust's assets may be carried at more than an amount that could be realized in a current disposition transaction. Columbia Property Trust has determined that there is no impairment in the carrying values of our real estate assets and related intangible assets as of March 31, 2016.

Projections of expected future operating cash flows require that Columbia Property Trust 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 fair value and could result in the misstatement of the carrying value of Columbia Property Trust's real estate assets and related intangible assets and liabilities and net income.

Assets Held for Sale

Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is adjusted to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized. As of March 31, 2016, none of Columbia Property Trust's properties met the criteria to be classified as held for sale in the accompanying consolidated balance sheet.

Page 11

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust Is the Lessor

Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail).

When calculating the intangible assets and liabilities for above-market and below-market tenant and ground leases where we are either the lessor or the lessee, the difference between the contractual rental rates and our estimate of market rental rates is measured over a period equal to the remaining non-cancelable term of the leases, including significantly below market renewal options for which exercise of the renewal option appears to be reasonably assured. The remaining term of leases with renewal options at terms significantly below market reflect the assumed exercise of such below market renewal options and assume the amortization period would coincide with the extended lease term.

As of March 31, 2016 and December 31, 2015, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):

		Intangible Lease Assets						Intangible Lease Origination Costs			Intangible Below-Market In-Place Lease Liabilities
		Above-Market In-Place Lease Assets			Absorption Period Costs
March 31, 2016	Gross	$	50,463		$	298,982		$	244,740		$	135,252
	Accumulated Amortization	(38,764		)	(187,508		)	(174,180		)	(82,098		)
	Net	$	11,699		$	111,474		$	70,560		$	53,154
December 31, 2015	Gross	$	50,463		$	317,841		$	258,672		$	138,663
	Accumulated Amortization	(37,971		)	(194,446		)	(181,482		)	(81,496		)
	Net	$	12,492		$	123,395		$	77,190		$	57,167

For the three months ended March 31, 2016 and 2015, Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the three months ended March 31, 2016	$	794	$	8,529	$	5,269	$	3,681
For the three months ended March 31, 2015	$	1,367	$	12,362	$	8,157	$	5,411

The remaining net intangible assets and liabilities, as of March 31, 2016, will be amortized as follows (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the remainder of 2016	$	1,769	$	21,133	$	12,751	$	10,084
For the years ending December 31:
2017	1,383		19,396		12,310		9,162
2018	1,041		15,329		9,487		7,218
2019	1,041		13,459		8,507		6,540
2020	1,039		11,487		7,439		5,346
2021	1,032		7,328		3,306		3,095
Thereafter	4,394		23,342		16,760		11,709
	$	11,699	$	111,474	$	70,560	$	53,154

Page 12

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust Is the Lessee

In-place ground leases where Columbia Property Trust is the lessee may have positive or negative value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption. This calculation includes significantly below-market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible leases assets and liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases. Columbia Property Trust had gross below-market lease assets of approximately $140.9 million as of March 31, 2016 and December 31, 2015, and recognized amortization of these assets of approximately $0.6 million for the three months ended March 31, 2016 and 2015.

As of March 31, 2016, the remaining net below-market intangible lease assets will be amortized as follows (in thousands):

For the remainder of 2016	$	1,912
For the years ending December 31:
2017	2,549
2018	2,549
2019	2,549
2020	2,549
2021	2,549
Thereafter	107,953
	$	122,610

Interest Rate Swap Agreements

Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate swap transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a cash flow hedge, if any, are recognized currently in earnings. All changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment. The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):

		Estimated Fair Value as of
Instrument Type	Balance Sheet Classification	March 31, 2016			December 31, 2015
Derivatives designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(7,293	)	$	(2,436	)

Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable.

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	Three Months Ended March 31,
	2016			2015
Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income	$	(4,857	)	$	159
Loss on interest rate swap recognized through earnings	$	—		$	(6	)

During the periods presented, there was no hedge ineffectiveness required to be recognized into earnings on the interest rate swaps that qualified for hedge accounting treatment.

Income Taxes

Columbia Property Trust has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the "Code"), and has operated as such beginning with its taxable year ended December 31, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.

Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), Columbia KCP TRS, LLC ("Columbia KCP TRS"), and Columbia Energy TRS, LLC ("Columbia Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, office properties that Columbia Property Trust does not intend to hold long term and a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.

Reclassification

Certain prior period amounts may be reclassified to conform with the current-period financial statement presentation. Within the financing section of the consolidated statement of cash flows, shares redeemed to fund income tax withholdings presented in prior year is now included in share redemptions.

Recent Accounting Pronouncement

In February 2016, the Financial Accounting Standards Board issued ASU 2016-02, Leases ("ASU 2016-02"), which amends the existing standards for lease accounting by requiring lessees to recognize most leases on their balance sheets, and making targeted changes to lessor accounting and reporting. The new standard will require lessees to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months, and classify such leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method (finance leases), on a straight-line basis over the term of the lease (operating leases). Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance as applies to sales-type leases, direct financing leases and operating leases. ASU 2016-02 supersedes previous leasing standards. ASU 2016-02 is effective for Columbia Property Trust for reporting periods beginning after December 15, 2018, with early adoption permitted. Columbia Property Trust is evaluating the impact ASU 2016-02 will have on its financial position and results of operations.

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3. Real Estate Transactions

Acquisitions

During the three months ended March 31, 2016, Columbia Property Trust did not acquire any properties. During 2015, Columbia Property Trust acquired the following properties (in thousands):

	315 Park Avenue South Building			1881 Campus Commons Building			116 Huntington Avenue Building			229 West 43rd Street Building
Location	New York, NY			Reston, VA			Boston, MA			New York, NY
Date Acquired	January 7, 2015			January 7, 2015			January 8, 2015			August 4, 2015
Purchase price:
Land	$	119,633		$	7,179		$	—		$	207,233
Building and improvements	232,598			49,273			108,383			265,952
Intangible lease assets	16,912			4,643			7,907			27,039
Intangible below market ground lease assets	—			—			30,244			—
Intangible lease origination costs	4,148			1,603			2,669			10,059
Intangible below market lease liability	(7,487		)	(97		)	(1,878		)	—
Total purchase price	$	365,804		$	62,601		$	147,325		$	510,283

Note 2, Summary of Significant Accounting Policies, providesa discussion of the estimated useful life for each asset class.

315 Park Avenue South Building & 1881 Campus Commons Building

On January 7, 2015, Columbia Property Trust acquired two assets, 315 Park Avenue South, a 327,000-square-foot office building in New York, New York (the "315 Park Avenue South Building"), and 1881 Campus Commons, a 244,000-square-foot office building in Reston, Virginia (the "1881 Campus Commons Building"). This portfolio was acquired for $436.0 million, exclusive of transaction costs and purchase price adjustments, using proceeds from the issuance of $350.0 million bonds payable due in 2025, proceeds from the Revolving Credit Facility, and cash on hand.

As of the acquisition date, the 315 Park Avenue South Building was 94.9% leased to nine tenants, including Credit Suisse (74%). For the period from January 7, 2015 to March 31, 2015, Columbia Property Trust recognized revenues of $6.2 million and a net loss of $1.3 million from the 315 Park Avenue South Building. The net loss includes acquisition expenses of $1.2 million.

As of the acquisition date, the 1881 Campus Commons Building was 78.0% leased to 15 tenants, including SOS International (15%) and Siemens (12%). For the period from January 7, 2015 to March 31, 2015, Columbia Property Trust recognized revenues of $1.5 million and a net loss of $0.6 million from the 1881 Campus Commons Building. The net loss includes acquisition expenses of $0.5 million.

116 Huntington Avenue Building

On January 8, 2015, Columbia Property Trust acquired a 271,000-square-foot office building in Boston, Massachusetts (the "116 Huntington Avenue Building"), for $152.0 million, inclusive of capital credits, using proceeds from the issuance of $350.0 million bonds payable due in 2025, proceeds from the Revolving Credit Facility, and cash on hand. As of the acquisition date, the 116 Huntington Avenue Building was 78.0% leased to 17 tenants, including American Tower (21%), GE Healthcare (13%), and Brigham and Women's (12%). For the period from January 8, 2015 to March 31, 2015, Columbia Property Trust recognized revenues of $2.9 million and a net loss of $0.2 million from the 116 Huntington Avenue Building. The net loss includes acquisition expenses of $0.3 million.

229 West 43rd Street Building

On August 4, 2015, Columbia Property Trust acquired the 481,000-square-foot office portion of the 229 West 43rd Street building, a 16-story,732,000-square-foot building located in the Times Square sub-market of Manhattan in New York, New York (the "229 West 43rd Street Building"), for $516.0 million, exclusive of transaction costs and purchase price adjustments. This acquisition was funded with the $300 Million Bridge Loan and borrowings on the Revolving Credit Facility, as described in Note 5, Line of Credit and Notes Payable. As of the acquisition date, the 229 West 43rd Street Building was 98% leased to nine tenants, including Yahoo! (40%), Snapchat (13%), Collective, Inc. (12%), and MongoDB (10%).

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Proforma Financial Information

The following unaudited pro forma statements of operations presented for the three months endedMarch 31, 2015, have been prepared for Columbia Property Trust to give effect to the acquisitions of the 315 Park Avenue South Building, the 1881 Campus Commons Building, the 116 Huntington Avenue Building, and the 229 West 43rd Street Building as if the acquisitions occurred on January 1, 2014. Columbia Property Trust owned these buildings for the entirety of the three months endedMarch 31, 2016. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had these acquisitions been consummated as of January 1, 2014 (in thousands).

	Three Months Ended March 31, 2015
Revenues	$	154,965
Net income	$	6,723
Net income per share - basic	$	0.05
Net income per share - diluted	$	0.05

Dispositions

During 2016 and 2015, Columbia Property Trust closed on the following transactions:

100 East Pratt Property

On March 31, 2016, Columbia Property Trust sold the 100 East Pratt Property in Baltimore, Maryland for $187.0 million, before purchase price adjustments, and recognized a $0.3 million loss on the sale. The net sale proceeds of $159.4 million were used to repay $119.0 million remaining on the $300 Million Bridge Loan on April 1, 2016, and to reduce the outstanding balance of the Revolving Credit Facility.

1881 Campus Commons Building

On December 10, 2015, Columbia Property Trust sold the 1881 Campus Commons Building in Reston, Virginia, for $65.0 million, exclusive of purchase price adjustments and closing costs, yielding a gain of $0.5 million. The proceeds from the sale of the 1881 Campus Commons Building were used to reduce the outstanding balance of the $300 Million Bridge Loan, as described in Note 5, Line of Credit and Notes Payable.

Market Square Buildings - Partial Sale

On October 28, 2015, Columbia Property Trust transferred the Market Square Buildings and the related $325.0 million mortgage note to a joint venture (the "Market Square Joint Venture") and sold a 49% interest in the Market Square Joint Venture to Blackstone Property Partners ("Blackstone") for approximately $120.0 million of net proceeds, which were used to repay a portion of the $300 Million Bridge Loan. As a result of this transaction, Columbia Property Trust recognized a gain on real estate of $3.1 million and retains a 51% interest in the Market Square Joint Venture. The Market Square Joint Venture owns and operates the Market Square Buildings through a REIT ("Market Square REIT East & West, LLC"). See Note 4, Unconsolidated Joint Venture, for additional information.

11 Property Sale

On July 1, 2015, Columbia Property Trust sold 11 properties to an unaffiliated third party for $433.3 million, exclusive of closing costs (the "11 Property Sale"), which resulted in a gain of $20.2 million. The proceeds for 10 of the properties were available on July 1, 2015, and the remaining proceeds were available on August 3, 2015. For the period from January 1, 2015 through July 1, 2015 the aggregate net income, excluding the gain on sale, for the properties included in the 11 Property Sale was $6.5 million. The following properties make up the 11 Property Sale:

170 Park Avenue	Bannockburn Lake III	Acxiom
180 Park Avenue	544 Lakeview	215 Diehl Road
Robbins Road	Highland Landmark III	1580 West Nursery
550 King Street	The Corridors III

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4.    Unconsolidated Joint Venture

Columbia Property Trust owns a majority interest of 51% in the Market Square Joint Venture, and Blackstone owns the remaining 49% interest in the joint venture. The Market Square Joint Venture owns and operates the Market Square Buildings through Market Square REIT East & West, LLC, which operates as a REIT. The Market Square Buildings are two, 13-story office buildings containing 687,000 square feet of office space in Washington, D.C. Columbia Property Trust shares substantive participation rights with Blackstone, including management selection and termination, and the approval of material operating and capital decisions. As such, Columbia Property Trust uses the equity method of accounting to record its investment in the Market Square Joint Venture. Under the equity method, the investment in the joint venture is recorded at cost and adjusted for cash contributions and distributions, and allocations of income (loss). Cash distributions and earnings are allocated according to the provisions of the joint venture agreement, which are consistent with the ownership percentages for the Market Square Joint Venture.

Columbia Property Trust evaluates the recoverability of its investment in unconsolidated joint venture in accordance with accounting standards for equity investments by first reviewing the investment for any indicators of impairment. If indicators are present, Columbia Property Trust estimates the fair value of the investment. If the carrying value of the investment is greater than the estimated fair value, management makes an assessment of whether the impairment is "temporary" or "other-than-temporary." In making this assessment, management considers the following: (1) the length of time and the extent to which fair value has been less than cost, and (2) Columbia Property Trust's intent and ability to retain its interest long enough for a recovery in market value.

As of March 31, 2016, the outstanding balance on the interest-only Market Square mortgage note is $325.0 million, bearing interest at 5.07%. The Market Square mortgage note matures on July 1, 2023. On October 28, 2015, Columbia Property Trust entered into a guaranty of a $25.0 million portion of the Market Square mortgage note, the amount of which will be reduced as space is leased.

Condensed balance sheet information for the Market Square Joint Venture is as follows (in thousands):

	March 31, 2016		December 31, 2015
Total assets	$	573,428	$	573,073
Total debt	$	324,616	$	324,603
Total equity	$	233,973	$	230,060
Columbia Property Trust's investment	$	121,784	$	118,695

Condensed income statement information for the Market Square Joint Venture is as follows (in thousands):

	Three Months Ended March 31, 2016
Total revenues	$	11,663
Net loss	$	(3,043	)
Columbia Property Trust's share	$	(1,552	)

Columbia Property Trust provides property and asset management services to the Market Square Joint Venture. Under these agreements, Columbia Property Trust oversees the day-to-day operations of the Market Square Joint Venture and the Market Square Buildings, including property management, property accounting, and other property services. Columbia Property Trust receives property management fees equal to 3.0% of the gross revenue of the Market Square Buildings and reimbursements of property operating costs, payable monthly, and asset management fees of $1.0 million annually, in equal quarterly installments. During the three months endedMarch 31, 2016, Columbia Property Trust earned $0.7 million in fees related to these asset and property management services, which are included in other property income on the accompanying consolidated statement of operations. As of March 31, 2016, $0.2 million in property management fees were due from the Market Square Joint Venture, and included in prepaid expenses and other assets on the accompanying consolidated balance sheet.

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5.    Line of Credit and Notes Payable

As of March 31, 2016 and December 31, 2015, Columbia Property Trust had the following line of credit and notes payable indebtedness (excluding bonds payable; see Note 6, Bonds Payable) in thousands:

Facility	March 31, 2016			December 31, 2015
Revolving Credit Facility	$	322,000		$	247,000
$300 Million Term Loan	300,000			300,000
$150 Million Term Loan	150,000			150,000
650 California Street Building mortgage note	128,169			128,785
$300 Million Bridge Loan	119,000			119,000
221 Main Street Building mortgage note	73,000			73,000
263 Shuman Boulevard Building mortgage note	49,000			49,000
SanTan Corporate Center mortgage notes	39,000			39,000
One Glenlake Building mortgage note	28,553			29,278
Less: Deferred financing costs related to term loans and notes payable, net of accumulated amortization	(4,044		)	(4,492		)
Total indebtedness	$	1,204,678		$	1,130,571

Fair Value of Debt

The estimated fair value of Columbia Property Trust's line of credit and notes payable as of March 31, 2016 and December 31, 2015, was approximately $1,214.5 million and $1,140.1 million, respectively. The related carrying value of the line of credit and notes payable as of March 31, 2016 and December 31, 2015, was $1,208.7 million and $1,135.1 million, respectively. Columbia Property Trust estimated the fair value of the $300 Million Term Loan (the "$300 Million Term Loan) and the Revolving Credit Facility (the "Revolving Credit Facility") by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates. Therefore, the fair values determined are considered to be based on observable market data for similar instruments (Level 2). The fair values of all other debt instruments were estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing arrangements as of the respective reporting dates. The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

Interest Paid and Capitalized and Debt Covenants

During the three months ended March 31, 2016 and 2015, Columbia Property Trust made interest payments totaling approximately $7.6 million and $15.5 million, respectively, of which approximately $0.1 million was capitalized during the three months ended March 31, 2016 and March 31, 2015. As of March 31, 2016, Columbia Property Trust believes it was in compliance with the restrictive financial covenants on its term loans, the Revolving Credit Facility, and notes payable obligations.

Debt Repayments

On April 1, 2016, Columbia Property Trust repaid the $119.0 million remaining on its $300 million, six-month unsecured loan, which was used to finance a portion of the 229 West 43rd Street Building acquisition in August of 2015 (the "$300 Million Bridge Loan"). The $300 Million Bridge Loan was scheduled to mature on August 4, 2016.

6.    Bonds Payable

In March 2015, Columbia Property Trust OP issued $350.0 million of ten-year, unsecured 4.150% senior notes at 99.859% of their face value (the "2025 Bonds Payable"), which are guaranteed by Columbia Property Trust. Columbia Property Trust OP received proceeds from the 2025 Bonds Payable, net of fees, of $347.2 million. The 2025 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 4.150%. In the accompanying consolidated balance sheets, the 2025 Bonds Payable are shown net of the initial issuance discount of approximately $0.5 million, which will be amortized to interest expense over the term of the 2025 Bonds Payable using the effective interest method. The principal amount of the 2025 Bonds Payable is due and payable on the maturity date, April 1, 2025.

In 2011, Columbia Property Trust OP issued $250.0 million of seven-year, unsecured 5.875% senior notes at 99.295% of their face value (the "2018 Bonds Payable"), which are guaranteed by Columbia Property Trust. Columbia Property Trust OP received

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proceeds from the 2018 Bonds Payable, net of fees, of $246.7 million. The 2018 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 5.875%, which is subject to adjustment in certain circumstances. In the accompanying consolidated balance sheets, the 2018 Bonds Payable are shown net of the initial issuance discount of approximately $1.8 million, which is amortized to interest expense over the term of the 2018 Bonds Payable using the effective interest method. The principal amount of the 2018 Bonds Payable is due and payable on the maturity date, April 1, 2018.

No interest payments were made on the 2018 Bonds Payable or the 2025 Bonds Payable during the three months ended March 31, 2016 and 2015. Columbia Property Trust is subject to substantially similar covenants under the 2025 Bonds Payable and the 2018 Bonds Payable. As of March 31, 2016, Columbia Property Trust believes it was in compliance with the restrictive covenants on the 2025 Bonds Payable and the 2018 Bonds Payable.

As of March 31, 2016 and December 31, 2015, the estimated fair value of the 2025 Bonds Payable and the 2018 Bonds Payable was approximately $602.2 million and $602.3 million, respectively. The related carrying value of the bonds payable, net of discounts, as of March 31, 2016 and December 31, 2015 was $599.0 million. The fair value of the bonds payable was estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowings as the 2025 Bonds Payable and the 2018 Bonds Payable arrangements as of the respective reporting dates (Level 2). The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

7. Commitments and Contingencies

Commitments Under Existing Lease Agreements

Certain lease agreements include provisions that, at the option of the tenant, may obligate Columbia Property Trust to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant. As of March 31, 2016, no such options have been exercised that have not been materially satisfied.

Guaranty of Debt of Unconsolidated Joint Venture

Upon entering in to the Market Square Joint Venture in October 2015, Columbia Property Trust entered into a guaranty of a $25.0 million portion of the Market Square mortgage note, the amount of which will be reduced as space is leased. As of March 31, 2016, Columbia Property Trust believes that the likelihood of making a payment under this guaranty is remote; therefore, no liability has been recorded related to this guaranty.

Litigation

Columbia Property Trust is subject to various legal proceedings, claims, and administrative proceedings arising in the ordinary course of business, some of which are expected to be covered by liability insurance. Management makes assumptions and estimates concerning the likelihood and amount of any reasonably possible loss relating to these matters using the latest information available. Columbia Property Trust records a liability for litigation if an unfavorable outcome is probable and the amount of loss or range of loss can be reasonably estimated. If an unfavorable outcome is probable and a reasonable estimate of the loss is a range, Columbia Property Trust accrues the best estimate within the range. If no amount within the range is a better estimate than any other amount, Columbia Property Trust accrues the minimum amount within the range. If an unfavorable outcome is probable but the amount of the loss cannot be reasonably estimated, Columbia Property Trust discloses the nature of the litigation and indicates that an estimate of the loss or range of loss cannot be made. If an unfavorable outcome is reasonably possible and the estimated loss is material, Columbia Property Trust discloses the nature and estimate of the possible loss of the litigation. Columbia Property Trust does not disclose information with respect to litigation where the possibility of an unfavorable outcome is considered to be remote. Based on current expectations, such matters, both individually and in the aggregate, are not expected to have a material adverse effect on the liquidity, results of operations, business, or financial condition of Columbia Property Trust. Columbia Property Trust is not currently involved in any legal proceedings of which management would consider the outcome to be reasonably likely to have a material adverse effect on the results of operations, liquidity, or financial condition of Columbia Property Trust.

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8. Stockholders' Equity

Common Stock Repurchase Program

Columbia Property Trust's board of directors has authorized the repurchase of up to an aggregate of $200 million of its common stock, par value $0.01 per share, through September 4, 2017 (the "Stock Repurchase Program"). Columbia Property Trust will continue to evaluate the purchase of shares, primarily through open market transactions which are subject to market conditions and other factors. Under the Stock Repurchase Program, since inception, Columbia Property Trust has acquired approximately 1.8 million shares at an average price of $22.60 per share, for aggregate purchases of $41.3 million. As of March 31, 2016, $158.7 million remains available for repurchases under the Stock Repurchase Program. Common stock repurchases are charged against equity as incurred, and the repurchased shares are retired.

Long-Term Incentive Plan

Columbia Property Trust maintains a long-term incentive plan that provides for grants of stock to be made to certain employees and independent directors of Columbia Property Trust (the "LTIP").Columbia Property Trust's shareholders approved the LTIP in July 2013, and a total of 2.0 million shares are authorized and reserved for issuance under the LTIP.

On January 21, 2016, Columbia Property Trust granted 231,015 shares of common stock to employees, net of 20,842 shares withheld to settle the related tax liability, under the LTIP (the "2015 LTIP Employee Grant"), of which 25% vested upon grant, and the remaining shares will vest ratably, with the passage of time, on January 31, 2017, 2018, and 2019. Employees will receive quarterly dividends related to their entire grant, including the unvested shares, on each dividend payment date. A summary of the activity for the employee stock grants under the LTIP for the three months ended March 31, 2016 follows:

	For the Three Months Ended March 31, 2016
	Shares (in thousands)		Weighted-Average Grant-Date Fair Value(1)
Unvested shares - beginning of period	151		$	24.59
Granted	247		$	21.79
Vested	(135	)	$	23.33
Forfeited	(1	)	$	21.90
Unvested shares - end of period(2)	262		$	22.61

⁽¹⁾  Columbia Property Trust determined the weighted-average grant-date fair value using the market closing price on the date of the respective grants.

⁽²⁾  As of March 31, 2016, we expect approximately 249,000 of the 262,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the LTIP.

During the three months ended March 31, 2016 and 2015, Columbia Property Trust paid quarterly installments of the independent directors' annual equity retainers by granting shares to the independent directors, which vested at the time of grant. A summary of these grants, made under the LTIP, follows:

Date of Grant	Shares	Grant-Date Fair Value
2016 Director Grants:
January 4, 2016	7,439	$	23.00
2015 Director Grants:
January 2, 2015	5,850	$	25.75

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For the three months ended March 31, 2016 and 2015, Columbia Property Trust incurred the stock-based compensation expense related to the following events (in thousands):

	Three Months Ended March 31,
	2016		2015
Amortization of unvested LTIP awards	$	851	$	563
Future employee awards(1)	360		300
Issuance of shares to independent directors	171		151
Total stock-based compensation expense	$	1,382	$	1,014

⁽¹⁾  These future employee awards relate to service during the period, to be granted in January of the subsequent year, with 25% vesting on the date of grant, and the remaining 75% vesting ratably on January 31st of each of the following three years.

These expenses are included in general and administrative expenses in the accompanying consolidated statements of operations. As of March 31, 2016 and December 31, 2015, there was $5.0 million and $3.2 million, respectively, of unrecognized compensation costs related to unvested awards under the LTIP. This amount will be amortized over the respective vesting period, ranging from one to three years at the time of grant.

9.     Supplemental Disclosures of Noncash Investing and Financing Activities

Outlined below are significant noncash investing and financing activities for the three months ended March 31, 2016 and 2015 (in thousands):

	Three Months Ended March 31,
	2016			2015
Investments in real estate funded with other assets	$	—		$	27,000
Other assets assumed at acquisition	$	—		$	6,119
Other liabilities assumed at acquisition	$	—		$	2,917
Discount on issuance of bonds payable	$	—		$	494
Amortization of net (premiums) discounts on debt	$	75		$	(119	)
Market value adjustments to interest rate swaps that qualify for hedge accounting treatment	$	(4,857	)	$	159
Accrued capital expenditures and deferred lease costs	$	2,631		$	10,153
Accrued deferred financing costs	$	—		$	461
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	$	225		$	393

10.    Earnings Per Share

For the three months endedMarch 31, 2016 and 2015, in computing the basic and diluted earnings-per-share, net income has been reduced for the dividends paid on unvested shares related to unvested awards under the LTIP and future employee awards, which relate to service in the current period and will be granted in January of the subsequent year. The following table reconciles the numerator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income for the three months endedMarch 31, 2016 and 2015, respectively (in thousands):

	Three Months Ended March 31,
	2016			2015
Net income	$	6,697		$	5,598
Distributions paid on unvested shares	(82		)	(49		)
Net income used to calculate basic and diluted earnings per share	$	6,615		$	5,549

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The following table reconciles the denominator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income for the three months endedMarch 31, 2016 and 2015, respectively (in thousands):

	Three Months Ended March 31,
	2016	2015
Weighted-average common shares - basic	123,393	124,903
Plus incremental weighted-average shares from time-vested conversions, less assumed share repurchases:
Previously granted LTIP awards, unvested	5	17
Future LTIP awards for 2016	14	15
Weighted-average common shares - diluted	123,412	124,935

11.     Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries

The 2025 Bonds Payable and the 2018 Bonds Payable (see Note 6, Bonds Payable) were issued by Columbia Property Trust OP, and are guaranteed by Columbia Property Trust. In accordance with SEC Rule 3-10(c), Columbia Property Trust includes herein condensed consolidating financial information in lieu of separate financial statements of the subsidiary issuer (Columbia Property Trust OP), as defined in the bond indentures, because all of the following criteria are met:

(1) The subsidiary issuer (Columbia Property Trust OP) is 100% owned by the parent company guarantor (Columbia Property Trust);

(2) The guarantee is full and unconditional; and

(3) No other subsidiary of the parent company guarantor (Columbia Property Trust) guarantees the 2025 Bonds Payable or the 2018 Bonds Payable.

Columbia Property Trust uses the equity method with respect to its investment in subsidiaries included in its condensed consolidating financial statements. Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of March 31, 2016 and December 31, 2015 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of comprehensive income for the three months ended March 31, 2016 and 2015 (in thousands); and its condensed consolidating statements of cash flows for the three months ended March 31, 2016 and 2015 (in thousands).

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Condensed Consolidating Balance Sheets (in thousands)

	As of March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	858,449	$	—		$	864,690
Buildings and improvements, net	—		29,300		2,760,703		—			2,790,003
Intangible lease assets, net	—		—		245,783		—			245,783
Construction in progress	—		25		11,198		—			11,223
Total real estate assets	—		35,566		3,876,133		—			3,911,699
Investment in unconsolidated joint venture	—		121,784		—		—			121,784
Cash and cash equivalents	149,341		22,301		13,734		—			185,376
Investment in subsidiaries	2,087,639		1,882,787		—		(3,970,426		)	—
Tenant receivables, net of allowance	—		141		11,590		—			11,731
Straight-line rent receivable	—		1,455		101,912		—			103,367
Prepaid expenses and other assets	317,246		264,587		26,438		(572,492		)	35,779
Intangible lease origination costs, net	—		—		70,560		—			70,560
Deferred lease costs, net	—		1,983		72,519		—			74,502
Investment in development authority bonds	—		—		120,000		—			120,000
Total assets	$	2,554,226	$	2,330,604	$	4,292,886	$	(4,542,918	)	$	4,634,798
Liabilities:
Line of credit and notes payable	$	—	$	888,145	$	886,563	$	(570,030	)	$	1,204,678
Bonds payable, net	—		595,509		—		—			595,509
Accounts payable, accrued expenses, and accrued capital expenditures	6		24,846		60,499		—			85,351
Due to affiliates	—		29		2,433		(2,462		)	—
Deferred income	—		38		21,848		—			21,886
Intangible lease liabilities, net	—		—		53,154		—			53,154
Obligations under capital leases	—		—		120,000		—			120,000
Total liabilities	6		1,508,567		1,144,497		(572,492		)	2,080,578
Equity:
Total equity	2,554,220		822,037		3,148,389		(3,970,426		)	2,554,220
Total liabilities and equity	$	2,554,226	$	2,330,604	$	4,292,886	$	(4,542,918	)	$	4,634,798

Page 23

Condensed Consolidating Balance Sheets (in thousands)

	As of December 31, 2015
	Columbia Property Trust (Parent) (Guarantor)		Columbia Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	890,226	$	—		$	896,467
Building and improvements, net	—		28,913		2,868,518		—			2,897,431
Intangible lease assets, net	—		—		259,136		—			259,136
Construction in progress	—		917		30,930		—			31,847
Total real estate assets	—		36,071		4,048,810		—			4,084,881
Investment in unconsolidated joint venture	—		118,695		—		—			118,695
Cash and cash equivalents	989		14,969		16,687		—			32,645
Investment in subsidiaries	2,333,408		1,901,581		—		(4,234,989		)	—
Tenant receivables, net of allowance	—		52		11,618		—			11,670
Straight-line rent receivable	—		1,311		107,751		—			109,062
Prepaid expenses and other assets	317,151		265,615		26,153		(573,071		)	35,848
Intangible lease origination costs, net	—		—		77,190		—			77,190
Deferred lease costs, net	—		2,055		86,072		—			88,127
Investment in development authority bonds	—		—		120,000		—			120,000
Total assets	$	2,651,548	$	2,340,349	$	4,494,281	$	(4,808,060	)	$	4,678,118
Liabilities:
Lines of credit, term loans, and notes payable	$	—	$	812,836	$	888,340	$	(570,605	)	$	1,130,571
Bonds payable, net	—		595,259		—		—			595,259
Accounts payable, accrued expenses, and accrued capital expenditures	—		13,313		85,446		—			98,759
Distributions payable	37,354		—		—		—			37,354
Due to affiliates	—		21		2,445		(2,466		)	—
Deferred income	—		200		24,614		—			24,814
Intangible lease liabilities, net	—		—		57,167		—			57,167
Obligations under capital leases	—		—		120,000		—			120,000
Total liabilities	37,354		1,421,629		1,178,012		(573,071		)	2,063,924
Equity:
Total equity	2,614,194		918,720		3,316,269		(4,234,989		)	2,614,194
Total liabilities and equity	$	2,651,548	$	2,340,349	$	4,494,281	$	(4,808,060	)	$	4,678,118

Page 24

Consolidating Statements of Operations (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—	$	849		$	98,833		$	(96	)	$	99,586
Tenant reimbursements	—		402			19,351			—			19,753
Hotel income	—		—			4,663			—			4,663
Other property income	245		—			2,420			(88		)	2,577
	245		1,251			125,267			(184		)	126,579
Expenses:
Property operating costs	—		771			40,661			(96		)	41,336
Hotel operating costs	—		—			4,331			—			4,331
Asset and property management fees:
Related-party	—		30			—			(30		)	—
Other	—		—			330			—			330
Depreciation	—		698			28,591			—			29,289
Amortization	—		76			15,999			—			16,075
General and administrative	38		2,194			8,316			(58		)	10,490
	38		3,769			98,228			(184		)	101,851
Real estate operating income (loss)	207		(2,518		)	27,039			—			24,728
Other income (expense):
Interest expense	—		(12,405		)	(12,881		)	7,389			(17,897		)
Interest and other income	3,555		3,835			1,804			(7,389		)	1,805
	3,555		(8,570		)	(11,077		)	—			(16,092		)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	3,762		(11,088		)	15,962			—			8,636
Income tax expense	—		(7		)	(70		)	—			(77		)
Income from equity investment	2,935		9,293			—			(13,780		)	(1,552		)
Income before on loss of real estate assets	6,697		(1,802		)	15,892			(13,780		)	7,007
Loss on sale of real estate assets	—		—			(310		)	—			(310		)
Net income	$	6,697	$	(1,802	)	$	15,582		$	(13,780	)	$	6,697

Page 25

Consolidating Statements of Operations (in thousands)

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)			Columbia  Property Trust OP  (the Issuer)			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	544		$	112,359		$	(94	)	$	112,809
Tenant reimbursements	—			228			28,021			—			28,249
Hotel income	—			—			4,993			—			4,993
Other property income	—			—			1,563			(71		)	1,492
	—			772			146,936			(165		)	147,543
Expenses:
Property operating costs	—			739			49,109			(94		)	49,754
Hotel operating costs	—			—			4,591			—			4,591
Asset and property management fees:
Related-party	—			14			—			(14		)	—
Other	—			—			397			—			397
Depreciation	—			623			33,384			—			34,007
Amortization	—			56			23,163			—			23,219
General and administrative	38			1,956			6,107			(57		)	8,044
Acquisition expenses	—			—			1,995			—			1,995
	38			3,388			118,746			(165		)	122,007
Real estate operating income (loss)	(38		)	(2,616		)	28,190			—			25,536
Other income (expense):
Interest expense	—			(9,225		)	(16,899		)	4,640			(21,484		)
Interest and other income	1,991			2,657			1,825			(4,640		)	1,833
Loss on interest rate swaps	—			—			(6		)	—			(6		)
Loss on early extinguishment of debt	—			(477		)	—			—			(477		)
Income from equity investment	3,645			12,794			—			(16,439		)	—
	5,636			5,749			(15,080		)	(16,439		)	(20,134		)
Income before income tax benefit	5,598			3,133			13,110			(16,439		)	5,402
Income tax benefit (expense)	—			(5		)	201			—			196
Net income	$	5,598		$	3,128		$	13,311		$	(16,439	)	$	5,598

Page 26

Consolidating Statements of Comprehensive Income (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP  (the Issuer)			Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income	$	6,697		$	(1,802	)	$	15,582	$	(13,780	)	$	6,697
Market value adjustments to interest rate swaps	(4,857		)	(4,857		)	—		4,857			(4,857		)
Comprehensive income	$	1,840		$	(6,659	)	$	15,582	$	(8,923	)	$	1,840

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income	$	5,598	$	3,128	$	13,311	$	(16,439	)	$	5,598
Market value adjustments to interest rate swaps	159		159		—		(159		)	159
Comprehensive income	$	5,757	$	3,287	$	13,311	$	(16,598	)	$	5,757

Page 27

Consolidating Statements of Cash Flows (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP (the Issuer)			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities	$	206		$	(13,343	)	$	55,977		$	42,840
Cash flows from investing activities:
Net proceeds from sale of real estate	159,406			—			—			159,406
Investment in real estate and related assets	—			(336		)	(17,642		)	(17,978		)
Investment in unconsolidated joint venture	—			(4,641		)	—			(4,641		)
Net cash used in investing activities	159,406			(4,977		)	(17,642		)	136,787
Cash flows from financing activities:
Borrowings, net of fees	—			131,000			—			131,000
Repayments of notes payable	—			(56,000		)	(1,341		)	(57,341		)
Distributions	(74,393		)	—			—			(74,393		)
Redemptions of common stock	(26,162		)	—			—			(26,162		)
Intercompany contributions (distributions)	89,295			(49,348		)	(39,947		)	—
Net cash provided by (used in) financing activities	(11,260		)	25,652			(41,288		)	(26,896		)
Net decrease in cash and cash equivalents	148,352			7,332			(2,953		)	152,731
Cash and cash equivalents, beginning of period	989			14,969			16,687			32,645
Cash and cash equivalents, end of period	$	149,341		$	22,301		$	13,734		$	185,376

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP (the Issuer)			Non- Guarantors			Eliminations			Columbia Property Trust (Consolidated)
Cash flows from operating activities	$	(32	)	$	(10,292	)	$	54,856		$	—		$	44,532
Cash flows from investing activities:
Net proceeds from sale of real estate	—			—			—			—			—
Investment in real estate and related assets	(57,123		)	(494,850		)	(23,364		)	—			(575,337		)
Intercompany contributions (distributions)	(553,203		)	—			—			553,203			—
Net cash used in investing activities	(610,326		)	(494,850		)	(23,364		)	553,203			(575,337		)
Cash flows from financing activities:
Borrowings, net of fees	—			809,078			—			—			809,078
Repayments of line of credit and notes payable	—			(358,000		)	(684		)	—			(358,684		)
Distributions	(37,523		)	—			—			—			(37,523		)
Redemptions of common stock	(620		)	—			—			—			(620		)
Intercompany contributions (distributions)	532,534			51,140			(30,471		)	(553,203		)	—
Net cash provided by (used in) financing activities	494,391			502,218			(31,155		)	(553,203		)	412,251
Net decrease in cash and cash equivalents	(115,967		)	(2,924		)	337			—			(118,554		)
Cash and cash equivalents, beginning of period	119,488			10,504			19,798			—			149,790
Cash and cash equivalents, end of period	$	3,521		$	7,580		$	20,135		$	—		$	31,236

Page 28

12.     Subsequent Events

Columbia Property Trust has evaluated subsequent events in connection with the preparation of the consolidated financial statements and notes thereto included in this report on Form 10-Q and did not note any additional subsequent events, other than those disclosed elsewhere in this report.

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis should be read in conjunction with our accompanying consolidated financial statements (and notes thereto) and the "Cautionary Note Regarding Forward-Looking Statements" preceding Part I of this report, as well as our consolidated financial statements (and the notes thereto) and Management's Discussion and Analysis of Financial Condition and Results of Operations included in our 2015 Form 10-K.

Executive Summary

We are focused on generating long-term shareholder returns through growth in net asset value with an emphasis on high-barrier- to-entry markets. Capital recycling initiatives are enabling us to improve our concentration in key markets and central business districts, as well as to reduce our exposure to single-tenant assets. During 2015, we invested $1.0 billion in New York and Boston acquisitions, and sold a total of 12 properties situated in outlying markets for $0.5 billion. We recently announced a plan to further reduce our exposure to non-target markets by selling three additional assets totaling 2.9 million square feet in Baltimore, Cleveland and Newark; we sold the 100 E. Pratt Street Building in Baltimore for gross proceeds of $187.0 million on March 31, 2016, and are actively engaged in sale discussions for the other two properties. We will continue to seek opportunities to increase our portfolio allocation to central business district properties, multi-tenant buildings, and primary, high barrier markets and, at the same time, optimize the allocation between our traditional, stabilized core investments, and growth-oriented, value-add investments. While transitioning the portfolio to more growth-oriented, value-add properties is likely to cause some dilution in earnings for a period of time, we believe that this transition will improve the opportunity for growth over the longer term.

We are continuing to actively manage our debt capital, with a particular focus on our allocation to unsecured borrowings. Since January 1, 2015, we have refinanced approximately $1.0 billion of unsecured debt and repaid $332.5 million of mortgage loans. As a result, over this period we extended our weighted average debt maturity from 3.3 years to 4.8 years⁽¹⁾; decreased our weighted-average cost of borrowing from 4.24% per annum to 3.60% per annum⁽¹⁾; and increased our unencumbered pool of assets as a percentage of gross real estate assets from 61.7% to 80.3%⁽¹⁾.

Further, we have continued to repurchase stock under our Stock Repurchase Program, approved in September of 2015, which authorizes us to purchase up to $200.0 million of our common stock through September of 2017. We believe a stock repurchase program will enable us to benefit from market downturns, which may cause our stock to be undervalued from time to time. As of March 31, 2016, we had purchased an aggregate of $41.3 million of common stock at an average price of $22.60 per share.

⁽¹⁾  Calculated as of March 31,2016, adjusted to pro forma the impact of the following debt repayments made on April 1, 2016 with net proceeds from the sale of the 100 East Pratt Property:  $119 million remaining on the $300 million Bridge Loan, and $28 million of the borrowings outstanding on the Revolving Credit Facility.

Page 29

Key Performance Indicators

Our operating results depend primarily upon the level of income generated by the leases at our properties. Occupancy and rental rates are critical drivers of our lease income. Historically, we have maintained portfolio occupancy above 90% and within a fairly narrow range. Over the last year, our average portfolio percentage leased ranged from 92.1% to 93.3%. The following table sets forth details related to recent leasing activities, which drive changes in our rental revenues:

	Three Months Ended March 31,
	2016				2015
Total number of leases	9				9
Lease term (months)	95				113
Square feet of leasing - renewal	11,985			(1)	40,050
Square feet of leasing - new	49,239			(2)	190,099
Total square feet of leasing	61,224				230,149
Rent leasing spread - renewal(3)	1.1		%		69.4		%
Rent leasing spread - new(4)	115.8		%		85.3		%
Rent leasing spread - all leases(3)(4)	113.6		%		82.7		%
Tenant improvements, per square foot - renewal	$	2.47			$	7.50
Tenant improvements, per square foot - new	$	28.99			$	74.11
Tenant improvements, per square foot - all leases	$	28.49			$	65.03
Leasing commissions, per square foot - renewal	$	8.46			$	12.00
Leasing commissions, per square foot - new	$	21.83			$	32.09
Leasing commissions, per square foot - all leases	$	21.58			$	29.35

⁽¹⁾  Includes our pro-rata share (51%) of total leased at the Market Square Buildings (2,000 square feet of renewal leasing).

⁽²⁾  Includes our pro-rata share (51%) of total leased at the Market Square Buildings (6,000 square feet of new leasing).

⁽³⁾  Rent leasing spreads for renewal leases are calculated based on the change in base rental income measured on a straight-line basis.

⁽⁴⁾  Rent leasing spreads for new leases are calculated only for properties that have been vacant less than one year, and are measured on a straight-line basis.

In 2016, rent leasing spreads are positive due to a 24,000-square-foot lease at our University Circle Property in San Francisco, California. In 2015, rent leasing spreads were positive due to a lease expansion and extension with the anchor tenant at our 221 Main Street Building in San Francisco, California. Over the next twelve months, approximately 1,378,000 square feet of our leases (approximately 14.7% of our office portfolio based on revenues) are scheduled to expire. Approximately 398,000 of this total relates to properties currently being marketed for sale. The remainder of the near-term expirations primarily relate to our properties in New York, San Francisco, and Washington, D.C. Overall, we expect to replace these leases with starting rates slightly below those currently in place at the properties.

Liquidity and Capital Resources

Overview

Cash flows generated from the operation of our properties are primarily used to fund recurring expenditures and stockholder dividends. Our board of directors elected to maintain the quarterly stockholder distribution rate of $0.30 per share for the first quarter of 2016. 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. In determining the amount of distributions to common stockholders, we also consider our future capital needs and future sources of liquidity, as well as the annual distribution requirements necessary to maintain our status as a REIT under the Code. Investments in new property acquisitions and first-generation capital improvements are generally funded with capital proceeds from property sales, debt, or cash on hand.

Short-term Liquidity and Capital Resources

During the three months ended March 31, 2016, we generated net cash flows from operating activities of $42.8 million, which consists primarily of receipts from tenants for rent and reimbursements, reduced by payments for operating costs, administrative expenses, and interest expense. During the same period, we paid total distributions to stockholders of $74.4 million, which includes dividend payments of $37.4 million for the fourth quarter of 2015, and $37.0 million for the first quarter of 2016.

Page 30

During the first quarter of 2016, we sold the 100 East Pratt Building for net sales proceeds of $159.5 million, and repurchased 1.1 million shares of our common stock for $25.0 million by drawing on our Revolving Credit Facility.  On April 1, 2016, we used the 100 East Pratt Street proceeds to repay the $119.0 million remaining on the $300 Million Bridge Loan, and to reduce our Revolving Credit Facility balance. 

Over the short-term, we expect our primary sources of capital to be operating cash flows, select property dispositions, and future debt financings. We expect that our principal demands for funds will be operating expenses, distributions to stockholders, capital improvements to our existing assets, stock repurchases, property acquisitions, and interest and principal payments on current and maturing debt. We believe that we have adequate liquidity and capital resources to meet our current obligations as they come due. As of April 25, 2016, we had access to $215.0 million of the borrowing capacity under the Revolving Credit Facility.

Long-term Liquidity and Capital Resources

Over the long term, we expect that our primary sources of capital will include operating cash flows, select property dispositions, and proceeds from secured or unsecured borrowings. We expect that our primary uses of capital will continue to include stockholder distributions; acquisitions; capital expenditures, such as building improvements, tenant improvements, and leasing costs; and repaying or refinancing debt.

Consistent with our financing objectives and operational strategy, we continue to maintain debt levels historically less than 40% of the cost of our assets. This conservative leverage goal could reduce the amount of current income we can generate for our stockholders, but it also reduces their risk of loss. We believe that preserving investor capital while generating stable current income is in the best interest of our stockholders. Our debt-to-real-estate-asset ratio is calculated using the outstanding debt balance and real estate at cost. As of March 31, 2016, our debt-to-real-estate-asset ratio, including our pro-rata share (51%) of the Market Square Joint Venture, was approximately 38.5%.

Revolving Credit Facility

The Revolving Credit Facility has a capacity of $500.0 million and matures in July 2019, with two, six-month extension options. As of March 31, 2016, we had an outstanding balance of $322.0 million on the Revolving Credit Facility. Amounts outstanding under the Revolving Credit Facility bear interest at LIBOR, plus an applicable margin ranging from 0.875% to 1.55% for LIBOR borrowings, or an alternate base rate, plus an applicable margin ranging from 0.00% to 0.55% for base rate borrowings, based on our applicable credit rating. The per annum facility fee on the aggregate revolving commitment (used or unused) ranges from 0.125% to 0.30%, also based on our applicable credit rating. Additionally, we have the ability to increase the capacity of the Revolving Credit Facility, along with the $300 Million Term Loan, which provides for four accordion options for an aggregate amount of up to $400 million, subject to certain limitations.

Term Loans

The $300 Million Term Loan matures in July 2020, and, along with the Revolving Credit Facility, provides for four accordion options for an aggregate amount of up to $400 million, subject to certain conditions. The $300 Million Term Loan bears interest, at our option, at either (i) LIBOR plus an applicable margin ranging from 0.90% to 1.75% for LIBOR loans, or (ii) an alternate base rate, plus an applicable margin ranging from 0.00% to 0.75% for base rate loans, based on our applicable credit rating.

The $150 Million Term Loan matures in July 2022. The $150 Million Term Loan bears interest, at our option, at either (i) LIBOR plus an applicable margin ranging from 1.40% to 2.35% for LIBOR loans, or (ii) an alternate base rate, plus an applicable margin ranging from 0.40% to 1.35% for base rate loans. The interest rate on the $150 Million Term Loan is effectively fixed with an interest rate swap agreement. Based on the terms of the interest rate swap and our current credit rating, the interest rate on the $150 Million Term Loan is effectively fixed at 3.52%.

Bonds Payable

In March 2015, we issued $350.0 million of ten-year, unsecured 4.150% senior notes at 99.859% of their face value under our Universal Shelf Registration Statement (defined below). We received proceeds from the 2025 Bonds Payable, net of fees, of $347.2 million. The 2025 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 4.150%. The principal amount of the 2025 Bonds Payable is due and payable on the maturity date, April 1, 2025.

Also, in 2011, we issued $250.0 million of seven-year, unsecured 5.875% senior notes at 99.295% of their face value. We received proceeds from the 2018 Bonds Payable, net of fees, of $246.7 million. The 2018 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 5.875%, which is subject to adjustment in certain circumstances. The principal amount of the 2018 Bonds Payable is due and payable on the maturity date, April 1, 2018.

Page 31

Debt Covenants

Our portfolio debt instruments, the $300 Million Bridge Loan, the $300 Million Term Loan, the $150 Million Term Loan, the Revolving Credit Facility, the 2025 Bonds Payable, and the 2018 Bonds Payable, contain certain covenants and restrictions that require us to meet certain financial ratios. We believe we were in compliance with all of our debt covenants as of March 31, 2016. We expect to continue to be able to meet the requirements of our debt covenants over the next twelve months.

Universal Shelf Registration Statement

We have on file a universal shelf registration statement on Form S-3 (No. 333-198764) with the SEC (the "Universal Shelf Registration Statement"), which was effective upon filing in September 2014. The Universal Shelf Registration Statement provides us with future flexibility to offer, from time to time and in one or more offerings, debt securities, common stock, preferred stock, depositary shares, warrants, or any combination thereof. The terms of any such future offerings would be established at the time of an offering.

Contractual Commitments and Contingencies

As of March 31, 2016, our contractual obligations will become payable in the following periods (in thousands):

Contractual Obligations	Total		2016			2017-2018		2019-2020		Thereafter
Debt obligations(1)	$	1,974,472	$	162,119	(2)	$	403,587	$	743,016	$	665,750
Interest obligations on debt(3)	320,454		50,090			108,254		71,010		91,100
Capital lease obligations(4)	120,000		—			—		—		120,000
Operating lease obligations	212,878		1,917			5,433		5,462		200,066
Total	$	2,627,804	$	214,126		$	517,274	$	819,488	$	1,076,916

⁽¹⁾  Reflects debt and interest obligations on debt, including our pro-rata share (51%) of the Market Square Buildings note payable. We guarantee $25.0 million of the Market Square Buildings note payable (see Footnote 7, Commitments & Contingencies, to the accompanying financial statements).

⁽²⁾  Debt obligations for 2016 include $119.0 million outstanding under the $300 Million Bridge Loan, which was repaid on April 1, 2016.

⁽³⁾  Interest obligations on variable-rate debt are measured at the rate at which they are effectively fixed with interest rate swap agreements (where applicable), a portion of which is reflected as gain (loss) on interest rate swaps in our accompanying consolidated statements of operations. Interest obligations on all other debt are measured at the contractual rate. See Item 3, Quantitative and Qualitative Disclosure About Market Risk, for more information regarding our interest rate swaps.

⁽⁴⁾  Amounts include principal obligations only. We made interest payments on these obligations of $1.8 million during the three months ended March 31, 2016, all of which was funded with interest income earned on the corresponding investments in development authority bonds. These obligations will be fully satisfied at maturity with equivalent investments in development authority bonds.

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Results of Operations

Overview

As of March 31, 2016, we owned controlling interests in 26 office properties, which were approximately 92.4% leased, and one hotel. Our operating results are impacted by recent acquisition, disposition and joint venture activity, as set forth below. In the near term, we expect real estate operating income to fluctuate primarily based on acquisitions, dispositions, and leasing activities.

Recent Acquisitions
Property	Location	Rentable Square Footage	Acquisition Date	Purchase Price (in thousands)(1)
2015
229 West 43rd Street	New York, NY	481,000	August 4, 2015	$	516,000
116 Huntington Avenue	Boston, MA	271,000	January 8, 2015	$	152,000
315 Park Avenue South	New York, NY	327,000	January 7, 2015	$	372,000
1881 Campus Commons	Reston, VA	244,000	January 7, 2015	$	64,000

⁽¹⁾  Exclusive of transaction costs and purchase price adjustments.

Recent Dispositions
Property	Location	Rentable Square Footage	Transaction Date	Sale Price (in thousands)
2016
100 East Pratt	Baltimore, MD	653,000	March 31, 2016	$	187,000
2015
1881 Campus Commons	Reston, VA	244,000	December 10, 2015	$	65,000
11 Property Sale:		2,856,000	July 1, 2015	$	433,250
170 Park Avenue	Northern NJ	145,000
180 Park Avenue	Northern NJ	224,000
1580 West Nursery Road	Baltimore, MD	315,000
Acxiom Buildings	Chicago, IL	322,000
Highland Landmark III	Chicago, IL	273,000
The Corridors III	Chicago, IL	222,000
215 Diehl Road	Chicago, IL	162,000
544 Lakeview	Chicago, IL	139,000
Bannockburn Lake III	Chicago, IL	106,000
Robbins Road	Boston, MA	458,000
550 King Street	Boston, MA	490,000

Joint Venture
Property Contributed to Joint Venture	Location	% Sold / Retained	Rentable Square Footage	Closing Date	Contributed Value
2015
Market Square Buildings	Washington, D.C.	49%/51%	687,000	October 28, 2015	$	595,000

Comparison of the three months ended March 31, 2016 with the three months ended March 31, 2015

Rental income was $99.6 million for the three months ended March 31, 2016, which represents a decrease as compared with $112.8 million for the three months ended March 31, 2015. The decrease is primarily due to prior year dispositions ($11.5 million)

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and transferring the Market Square Buildings to a joint venture ($9.9 million), partially offset by the acquisition of the 229 West 43rd Street Building in August 2015 ($8.5 million). We expect future rental income to fluctuate based on leasing, acquisition, and disposition activity.

Tenant reimbursements and property operating costs were $19.8 million and $41.3 million, respectively, for the three months ended March 31, 2016, which represents a decrease as compared with $28.2 million and $49.8 million, respectively, for the three months ended March 31, 2015. The decrease is primarily due to properties disposed of in the prior year and the transfer of the Market Square Buildings to a joint venture. Tenant reimbursements and property operating costs are expected to fluctuate with leasing activity and changes in our portfolio.

Hotel income, net of hotel operating costs, remained flat at $0.3 million for the three months ended March 31, 2016 as compared to $0.4 million for the three months ended March 31, 2015. Hotel income and hotel operating costs are primarily driven by the local economic conditions and, as a result, are expected to fluctuate in the future, primarily based on changes in the supply of, and demand for, hotel and banquet space in Cleveland, Ohio, similar to that offered by the Key Center Marriott hotel.

Other property income was $2.6 million for the three months ended March 31, 2016, which represents an increase as compared with $1.5 million for the three months ended March 31, 2015, primarily due to lease termination activity and management fee income from services provided to the Market Square Joint Venture, as described in Note 4, Unconsolidated Joint Venture. Future other property income is expected to fluctuate, primarily as a result of lease restructuring and termination activities.

Asset and property management fees were $0.3 million for the three months ended March 31, 2016, which represents a decrease as compared with $0.4 million for the three months ended March 31, 2015, primarily due to transferring the Market Square Buildings to a joint venture in the fourth quarter of 2015. The Market Square Buildings were previously managed by a third party. Future asset and property management fees are expected to fluctuate with future acquisition and disposition activity.

Depreciation was $29.3 million for the three months ended March 31, 2016, which represents a decrease as compared with $34.0 million for the three months ended March 31, 2015, primarily due to prior year dispositions ($4.0 million) and transferring the Market Square Buildings to a joint venture ($3.6 million), partially offset by prior year acquisitions ($2.3 million) and capital projects at our existing properties ($0.5 million). Excluding the impact of changes in our portfolio, depreciation is expected to increase in future periods due to ongoing capital improvements at our existing properties.

Amortization was $16.1 million for the three months ended March 31, 2016, which represents a decrease as compared with $23.2 million for the three months ended March 31, 2015. The decrease is primarily due to the expiration of leases ($2.9 million), prior year dispositions ($2.5 million), and transferring the Market Square Buildings to a joint venture ($2.3 million), partially offset by prior year acquisitions ($1.4 million). We expect future amortization to fluctuate primarily as a result of future leasing activity, acquisitions, and dispositions.

General and administrative expenses were $10.5 million for the three months ended March 31, 2016, which represents an increase as compared to $8.0 million for the three months ended March 31, 2015. The increase is due to costs incurred to develop our regional investment platform ($1.5 million), bad-debt expenses ($0.6 million), and additional vesting under stock-based incentive compensation plan ($0.3 million). Due to non-recurring costs incurred in this period, we expect future general and administrative expenses to decrease over the near-term.

For the three months ended March 31, 2015, we incurred total acquisition expenses of $2.0 million in connection with acquiring three properties in January 2015. See Note 3, Real Estate Transactions, of the accompanying financial statements for details of these acquisitions. We expect future acquisition expenses to fluctuate with acquisition activity.

Interest expense was $17.9 million for the three months ended March 31, 2016, which represents a decrease as compared with $21.5 million for the three months ended March 31, 2015, primarily due to transferring the Market Square mortgage note to a joint venture ($4.1 million) and repaying three mortgage loans in 2015 ($2.5 million), partially offset by the issuance of bonds in March 2015 ($2.8 million). We expect interest expense to decrease slightly over the near term, as a result of repaying the remainder of the $300 Million Bridge Loan with proceeds from the sale of the 100 East Pratt Property on April 1, 2016.

Interest and other income was stable at $1.8 million for the three months ended March 31, 2016 and 2015. Interest income is expected to remain at comparable levels in future periods, as the majority of this income is earned on investments in development authority bonds with a remaining term of approximately 5.8 years as of March 31, 2016. Interest income earned on development authority bonds is entirely offset by interest expense incurred on the corresponding capital leases.

We recognized a loss on interest rate swaps of $6,000 for the three months ended March 31, 2015, related to the 333 Market Street Building mortgage note, which was repaid in June 2015. We do not anticipate gains and losses on interest rate swaps in the near

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term, as our only interest rate swap is accounted for as a hedge; thus, changes in the market rate are recorded to other comprehensive income.

We recognized a loss on early extinguishment of debt of $0.5 million for the three months ended March 31, 2015. In March 2015, we repaid a bridge loan used to finance acquisitions in January of 2015 approximately four months early, resulting in the write-off of related deferred financing costs. We expect future gains or losses on early extinguishments of debt to fluctuate with financing activities.

We recognized a loss from unconsolidated joint venture of $1.6 million for the three months ended March 31, 2016, as income from operations at the Market Square Buildings was offset by interest expense related to the $325 million mortgage note on the property. Future income or loss from unconsolidated joint venture will fluctuate with operating activity at the Market Square Buildings.

Net Income

Net income was $6.7 million, or $0.05 per basic and diluted share, for the three months ended March 31, 2016, which represents an increase as compared with $5.6 million, or $0.04 per basic and diluted share, for the three months ended March 31, 2015. The increase is due to acquisition expenses incurred in 2015 only ($2.0 million), partially offset by the impact of property sales, including the sale of a 49% interest in the Market Square Buildings and related mortgage note through an unconsolidated joint venture ($0.8 million). See "Supplemental Performance Measures" section below for our same store results compared with the prior year. We expect future earnings to fluctuate as a result of leasing activity at our existing properties, our planned near-term dispositions, and acquisition activity.

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Supplemental Performance Measures

In addition to net income, we measure the performance of the company using certain non-GAAP supplemental performance measures, including: (i) Funds From Operations ("FFO"), (ii) Net Operating Income ("NOI"), and (iii) Same Store Net Operating Income ("Same Store NOI"). These non-GAAP metrics are commonly used by industry analysts and investors as supplemental operation performance measures of REITs and are viewed by management to be useful indicators of operating performance. Historical cost 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 instead have historically risen or fallen with market conditions, many industry analysts and investors have considered presentation of operating results for real estate companies using historical cost accounting alone to be insufficient. Management believes that the use of FFO, NOI, and Same Store NOI, combined with net income, improves the understanding of operating results of REITs among the investing public and makes comparisons of REIT operating results more meaningful.

Net income is the most comparable GAAP measure to FFO, NOI, and Same Store NOI. Each of these supplemental performance measures exclude expenses that materially impact our overall results of operations and, therefore, should not be considered as a substitute for net income, income from continuing operations before income taxes, or any other measures derived in accordance with GAAP. Furthermore, these metrics may not be comparable to other similarly titled measures used by other companies.

Funds From Operations

FFO is a non-GAAP measure used by many investors and analysts who follow the real estate industry to measure the performance of an equity REIT. We consider FFO a useful measure of our performance because it principally adjusts for the effects of GAAP depreciation and amortization of real estate assets, which assumes that the value of real estate diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, we believe that FFO provides a meaningful supplemental measure of our performance. We believe that the use of FFO, combined with the required GAAP presentations, is beneficial in improving our investors' understanding of our operating results and allowing for comparisons among other companies who define FFO as we do.

FFO, as defined by the National Association of Real Estate Investment Trusts ("NAREIT"), represents net income (computed in accordance with GAAP), excluding gains (losses) on sales of real estate and impairments of real estate assets, plus real estate-related depreciation and amortization, and after adjustments for unconsolidated partnerships and joint ventures, for both continuing and discontinued operations. We compute FFO in accordance with NAREIT's definition, which may differ from the methodology for calculating FFO, or similarly titled measures, used by other companies, and this may not be comparable to those presentations.

FFO does not represent amounts available for management's discretionary use because of needed capital replacement or expansion, debt service obligations, or other commitments and uncertainties, nor is it indicative of funds available to fund our cash needs, including our ability to make distributions. Our presentation of FFO should not be considered as an alternative to net income (computed in accordance with GAAP) as an indicator of financial performance.

Reconciliations of net income to FFO (in thousands):

	Three Months Ended March 31,
	2016		2015
Reconciliation of Net Income to FFO:
Net income	$	6,697	$	5,598
Adjustments:
Depreciation of real estate assets	29,289		34,007
Amortization of lease-related costs	16,075		23,219
Depreciation and amortization included in loss from unconsolidated joint venture(1)	2,470		—
Loss on sale of real estate assets	310		—
Total Funds From Operations adjustments	48,144		57,226
NAREIT FFO available to common stockholders	$	54,841	$	62,824

⁽¹⁾  Reflects our pro-rata share (51%) of depreciation and amortization for the Market Square Joint Venture.

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Net Operating Income

As set forth below, NOI is calculated by deducting property operating costs from rental and other property revenues for continuing operations. As a performance metric consisting of only revenues and expenses directly related to ongoing real estate rental operations, which have been or will be settled in cash, NOI is narrower in scope than FFO.

NOI, as we calculate it, may not be directly comparable to similarly titled, but differently calculated, measures for other REITs. We believe that NOI is another useful supplemental performance measure, as it is an input in many REIT valuation models and it provides a means by which to evaluate the performance of the properties.

The major factors influencing our NOI are property acquisitions and dispositions, occupancy levels, rental rate increases or decreases, and the recoverability of operating expenses.

Same Store Net Operating Income

We also evaluate the performance of our properties, on a "same store" basis, using a metric referred to as Same Store NOI. We view Same Store NOI as a useful supplemental performance measure because it improves comparability between periods by eliminating the effects of changes in the composition of our portfolio.

On an individual property basis, Same Store NOI is computed in a consistent manner as NOI. For the periods presented, we have defined our same store portfolio as those properties that have been owned and in operation since January 1, 2015, including the operating revenues and expenses related to our current share of the Market Square Buildings (51%). NOI and Same Store NOI are calculated as follows for the three months ended March 31, 2016 and 2015 (in thousands):

	Three Months Ended March 31,
	2016			2015
Revenues:
Rental income	$	84,990		$	85,125
Tenant reimbursements	16,737			18,902
Hotel income	4,663			4,993
Other property income	944			274
Total revenues	107,334			109,294
Operating expenses:
Property operating costs	(34,858		)	(35,497		)
Hotel operating costs	(4,331		)	(4,591		)
Total operating expenses	(39,189		)	(40,088		)
Same Store NOI	$	68,145		$	69,206
NOI from acquisitions(1)	10,038			5,189
NOI from dispositions(2)	3,918			17,285
Net operating income total	$	82,101		$	91,680

⁽¹⁾  Reflects activity for the following properties acquired since January 1, 2015, for all periods presented: 229 West 43rd Street, 315 Park Avenue South, and 116 Huntington Avenue.

⁽²⁾  Reflects activity for the following properties sold since January 1, 2015, for all periods presented: 100 East Pratt, 1881 Campus Commons, 49% of the Market Square Buildings, 170 Park Avenue, 180 Park Avenue, 1580 West Nursery Road, Acxiom, Highland Landmark III, The Corridors III, 215 Diehl Road, 544 Lakeview, Bannockburn Lake III, 550 King Street, and Robbins Road.

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A reconciliation of Net Income to NOI and Same Store NOI is presented below (in thousands):

	Three Months Ended March 31,
	2016			2015
Net income	$	6,697		$	5,598
Net interest expense	19,999			21,469
Interest income from development authority bonds	(1,800		)	(1,800		)
Income tax expense (benefit)	77			(196		)
Depreciation	31,097			34,007
Amortization	16,737			23,219
Loss on sale of real estate assets	310			—
Real estate acquisition costs	—			1,995
Loss on early extinguishment of debt	—			477
General and administrative	10,552			8,044
Interest rate swap valuation adjustment	—			(1,315		)
Interest expense associated with interest rate swaps	—			1,321
Lease termination income(1)	(1,568		)	(1,139		)
Net Operating Income	$	82,101		$	91,680
NOI from Acquisitions(2)	(10,038		)	(5,189		)
NOI from Dispositions(3)	(3,918		)	(17,285		)
Same Store NOI	$	68,145		$	69,206

⁽¹⁾  Lease termination income includes adjustments for straight-line rent related to lease terminations.

⁽²⁾  Reflects activity for the following properties acquired since January 1, 2015, for all periods presented: 229 West 43rd Street, 315 Park Avenue South, and 116 Huntington Avenue.

⁽³⁾  Reflects activity for the following properties sold since January 1, 2015, for all periods presented: 100 East Pratt, 1881 Campus Commons, 49% of the Market Square Buildings, 170 Park Avenue, 180 Park Avenue, 1580 West Nursery Road, Acxiom, Highland Landmark III, The Corridors III, 215 Diehl Road, 544 Lakeview, Bannockburn Lake III, 550 King Street, and Robbins Road.

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, 2003. To qualify as a REIT, we must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of our adjusted taxable income, as defined in the Code, to our stockholders, computed without regard to the dividends-paid deduction and by excluding our net capital gain. 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 will then 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, unless the Internal Revenue Service grants us relief under certain statutory provisions. Such an event could materially 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 for federal income tax purposes.

The TRS Entities are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, office properties that we do not intend to hold long term and a full-service hotel. We have elected to treat the TRS Entities as taxable REIT subsidiaries. We may perform certain additional, noncustomary services for tenants of our buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for us to continue to qualify as a REIT, we must limit our investments in taxable REIT subsidiaries to 25% of the value of our total assets. Deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted rates expected to be in effect when the temporary differences reverse.

No provisions for federal income taxes have been made in our accompanying consolidated financial statements, other than the provisions relating to the TRS Entities, as we made distributions in excess of taxable income for the periods presented. We are subject to certain state and local taxes related to property operations in certain locations, which have been provided for in our accompanying consolidated financial statements.

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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 reimbursements on a per-square-foot basis, or in some cases, annual reimbursement of operating expenses above a certain per-square-foot allowance. However, due to the long-term nature of the leases, the leases may not reset frequently enough to fully cover inflation.

Application of Critical Accounting Policies

There have been no material changes in our critical accounting policies from those disclosed in our Annual Report on Form 10-K for the year ended December 31, 2015.

Related-Party Transactions

During the three months ended March 31, 2016 and 2015, we did not have any related party transactions, except as described in Note 4, Unconsolidated Joint Venture, of the accompanying financial statements.

Commitments and Contingencies

We are subject to certain commitments and contingencies with regard to certain transactions. Refer to Note 7, Commitments and Contingencies, of our accompanying consolidated financial statements for further explanation. Examples of such commitments and contingencies include:

• structural repairs at one of our properties, ranging from $30.0 million to $35.0 million;

• guaranty of debt of an unconsolidated joint venture of $25.0 million;

• obligations under operating leases;

• obligations under capital leases;

• commitments under existing lease agreements; and

• litigation.

Subsequent Events

We have evaluated subsequent events in connection with the preparation of the consolidated financial statements and notes thereto included in this report on Form 10-Q and did not note any additional subsequent events, other than those disclosed elsewhere in this report.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As a result of certain of our debt facilities, we are exposed to interest rate changes. 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. However, we currently have a substantial amount of debt outstanding. We manage our ratio of fixed- to floating-rate debt with the objective of achieving a mix that we believe is appropriate in light of anticipated changes. We closely monitor interest rates and will continue to consider the sources and terms of our borrowing facilities to determine whether we have appropriately guarded ourselves against the risk of increasing interest rates in future periods.

Additionally, we have entered into interest rate swaps, and may enter into other interest rate swaps, caps, or other arrangements to mitigate our interest rate risk on a related financial instrument. We do not currently enter into derivative or interest rate transactions for speculative purposes; however, certain of our derivatives may not qualify for hedge accounting treatment. All of our debt was entered into for other-than-trading purposes.

Our financial instruments consist of both fixed-rate and variable-rate debt. Our variable-rate borrowings consist of the Revolving Credit Facility, the $300 Million Bridge Loan, the $300 Million Term Loan, and the $150 Million Term Loan. However, only the Revolving Credit Facility, the $300 Million Bridge Loan, and the $300 Million Term Loan bear interest at effectively variable rates, as the variable rate on the $150 Million Term Loan has been effectively fixed through the interest rate swap agreement described in the "Liquidity and Capital Resources" section of Item 2, Management's Discussion and Analysis of Financial Condition and Results of Operations.

As of March 31, 2016, we had $322.0 million of outstanding borrowings under the Revolving Credit Facility; $150.0 million outstanding on the $150 Million Term Loan; $300.0 million outstanding on the $300 Million Term Loan; $119.0 million outstanding

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under the $300 Million Bridge Loan; $249.5 million in 2018 Bonds Payable outstanding; $349.6 million in 2025 Bonds Payable outstanding; and $317.7million outstanding on fixed-rate, term mortgage loans. The weighted-average interest rate of all of our debt instruments was 3.30% as of March 31, 2016.

Approximately $1,066.8 million of our total debt outstanding as of March 31, 2016, is subject to fixed rates, either directly or when coupled with an interest rate swap agreement. As of March 31, 2016, these balances incurred interest expense at an average interest rate of 4.56% and have expirations ranging from 2016 through 2025. The amounts outstanding on our Revolving Credit Facility in the future will largely depend upon future acquisition and disposition activity.

Our unconsolidated Market Square Joint Venture holds a $325 million mortgage note, which bears interest at 5.07%. Adjusting for our pro-rata share (51%) of the Market Square Buildings mortgage note, our weighted-average interest rate is 3.45%.

We do not believe there is any exposure to increases in interest rates related to the capital lease obligations of $120.0 million at March 31, 2016, as the obligations are at fixed interest rates.

ITEM 4. 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 the 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 Securities Exchange Act of 1934 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 report in providing a reasonable level of assurance that information we are required to disclose in reports that we file or submit under the Securities Exchange Act of 1934 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.

Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting during the quarter ended March 31, 2016, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

From time to time, we are party to legal proceedings, which arise in the ordinary course of our business. We are not currently involved in any legal proceedings of which the outcome is reasonably likely to have a material adverse effect on our results of operations, liquidity, or financial condition, nor are we aware of any such legal proceedings contemplated by governmental authorities.

ITEM 1A. RISK FACTORS

There have been no material changes from the risk factors disclosed in the "Risk Factors" section of our Annual Report on Form 10-K for the year ended December 31, 2015.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(a) During the quarter ended March 31, 2016, we did not sell any equity securities that were not registered under the Securities Act of 1933.

(b) Not applicable.

(c) On September 4, 2015, our board of directors approved the Stock Repurchase Program, which provides for Columbia Property Trust to buy up to $200 million of our common stock over a two-year period, ending on September 4, 2017.

During the quarter ended March 31, 2016, we purchased and retired the following shares in accordance with the Stock Repurchase Program and shares remitted for income taxes associated with stock grants under the Long-Term Incentive Plan:

Period	Total Number of Shares Purchased	Average  Price Paid  per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan	Maximum Approximate Dollar Value Available for Future Purchase(3)
January 2016(1)	1,150,902	$	22.58	1,105,215	$	158,683,331
February 2016(2)	1,699	$	20.27	—	$	158,683,331
March 2016(2)	5,340	$	21.99	—	$	158,683,331

⁽¹⁾  Activity for January 2016 relates to the Stock Repurchase Program, as described above, or the remittance of shares for income taxes associated with stock grants under the Long-Term Incentive Plan (see Note 8, Stockholders' Equity).

⁽²⁾  All activity for February 2016 and March 2016 relates to the remittance of shares for income taxes associated with stock grants under the Long-Term Incentive Plan (see Note 8, Stockholders' Equity).

⁽³⁾  Amounts available for future purchase relate only to our Stock Repurchase Program, and represent the remainder of the $200 million authorized by our board of directors for share repurchases.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

(a) There have been no defaults with respect to any of our indebtedness.

(b) Not applicable.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

(a) During the first quarter of 2016, there was no information that was required to be disclosed in a report on Form 8-K that was not disclosed in a report on Form 8-K.

(b) There are no material changes to the procedures by which stockholders may recommend nominees to our board of directors since the filing of our most recent Schedule 14A.

ITEM 6. EXHIBITS

The exhibits required to be filed with this report are set forth on the Exhibit Index to this quarterly report attached hereto.

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SIGNATURES

Pursuant to the requirements 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.

		COLUMBIA PROPERTY TRUST, INC. (Registrant)
Dated:	April 28, 2016	By:	/s/ JAMES A. FLEMING
			James A. Fleming Executive Vice President and Chief Financial Officer

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EXHIBIT INDEX TO

FIRST QUARTER 2016 FORM 10-Q OF

COLUMBIA PROPERTY TRUST, INC.

The following documents are filed as exhibits to this report. Exhibits that are not required for this report are omitted.

Ex.	Description
3.1	Second Amended and Restated Articles of Incorporation as Amended by the First, Second, Third and Fourth Articles of Amendment and the Articles Supplementary (incorporated by reference to Exhibit 3.1 to the Company's Quarterly Report on Form 10-Q filed with the Commission on November 5, 2013).
3.2	Second Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company's current Report on Form 8-K filed with the Commission on August 15, 2013).
3.3	Third Articles of Amendment (incorporated by reference to Exhibit 3.2 to the Company's current Report on Form 8-K filed with the Commission on August 15, 2013).
3.4	Fourth Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company's current Report on Form 8-K filed with the Commission on July 1, 2014).
3.5	Articles Supplementary (incorporated by reference to Exhibit 3.1 to the Company's current Report on Form 8-K filed with the Commission on September 4, 2013).
3.6	Third Amended and Restated Bylaws (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed with the Commission on September 4, 2013).
4.1	Statement regarding restrictions on transferability of shares of common stock (to appear on stock certificate or to be sent upon request and without charge to stockholders issued shares without certificates) (incorporated by reference to Exhibit 4.1 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013).
4.2	Indenture, dated March 12, 2015 (incorporated by reference to Exhibit 4.1 to the Company's Current Report on Form 8-K filed with the Commission on March 12, 2015).
4.3	Supplement Indenture, dated March 12, 2015 (incorporated by reference to Exhibit 4.2 to the Company's Current Report on Form 8-K filed with the Commission on March 12, 2015).
4.4	Form of 4.150% Senior Notes due 2025 (included in Exhibit 4.3).
31.1*	Certification of the Principal Executive Officer of the Company, pursuant to Securities Exchange Act Rules 13a-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of the Principal Financial Officer of the Company, pursuant to Securities Exchange Act Rules 13a-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of the Principal Executive Officer and Principal Financial Officer of the Company, pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	XBRL Instance 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.
*	Filed herewith.

Page 43

EX-31.1

EXHIBIT 31.1

PRINCIPAL EXECUTIVE OFFICER

CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. 1350)

I, E. Nelson Mills, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Columbia Property Trust, Inc. for the quarter ended March 31, 2016;

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 officer(s) 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 officer(s) 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:	April 28, 2016	By:	/s/ E. Nelson Mills
			E. Nelson Mills
			Principal Executive Officer

EX-31.2

EXHIBIT 31.2

PRINCIPAL FINANCIAL OFFICER

CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. 1350)

I, James A. Fleming, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Columbia Property Trust, Inc. for the quarter ended March 31, 2016;

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 officer(s) 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 officer(s) 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:	April 28, 2016	By:	/s/ James A. Fleming
			James A. Fleming
			Principal Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

AND PRINCIPAL FINANCIAL OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. 1350)

In connection with the Quarterly Report of Columbia Property Trust, Inc. (the "Registrant") on Form 10-Q for the quarter ended March 31, 2016, as filed with the Securities and Exchange Commission (the "Report"), the undersigned, E. Nelson Mills, Principal Executive Officer of the Registrant, and James A. Fleming, Principal Financial Officer of the Registrant, hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350) that, to the best of our 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.

/s/ E. NELSON MILLS

E. Nelson Mills

Principal Executive Officer

April 28, 2016

/s/ JAMES A. FLEMING

James A. Fleming

Principal Financial Officer

April 28, 2016

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 25, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	COLUMBIA PROPERTY TRUST, INC.
Entity Central Index Key	0001252849
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		123,467,080

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Real estate assets, at cost:
Land	$ 864,690	$ 896,467
Buildings and improvements, less accumulated depreciation of $584,830 and $613,639, as of March 31, 2016 and December 31, 2015, respectively	2,790,003	2,897,431
Intangible lease assets, less accumulated amortization of $244,578 and $250,085, as of March 31, 2016 and December 31, 2015, respectively	245,783	259,136
Construction in progress	11,223	31,847
Total real estate assets	3,911,699	4,084,881
Investment in unconsolidated joint venture	121,784	118,695
Cash and cash equivalents	185,376	32,645
Tenant receivables, net of allowance for doubtful accounts of $530 and $8 as of March 31, 2016 and December 31, 2015, respectively	11,731	11,670
Straight-line rent receivable	103,367	109,062
Prepaid expenses and other assets	35,779	35,848
Intangible lease origination costs, less accumulated amortization of $174,180 and $181,482, as of March 31, 2016 and December 31, 2015, respectively	70,560	77,190
Deferred lease costs, less accumulated amortization of $38,808 and $40,817, as of March 31, 2016 and December 31, 2015, respectively	74,502	88,127
Investment in development authority bonds	120,000	120,000
Total assets	4,634,798	4,678,118
Liabilities:
Line of credit and notes payable, net of deferred financing costs of $4,044 and $4,492, as of March 31, 2016 and December 31, 2015, respectively	1,204,678	1,130,571
Bonds payable, net of discounts of $945 and $1,020 and deferred financing costs of $3,546 and $3,721, as of March 31, 2016 and December 31, 2015, respectively	595,509	595,259
Accounts payable, accrued expenses, and accrued capital expenditures	85,351	98,759
Dividends payable	0	37,354
Deferred income	21,886	24,814
Intangible lease liabilities, less accumulated amortization of $82,098 and $81,496, as of March 31, 2016 and December 31, 2015, respectively	53,154	57,167
Obligations under capital leases	120,000	120,000
Total liabilities	$ 2,080,578	2,063,924
Commitments and Contingencies
Equity:
Common stock, $0.01 par value, 225,000,000 shares authorized, 123,458,960 and 124,363,073 shares issued and outstanding as of March 31, 2016 and December 31, 2015, respectively	$ 1,234	1,243
Additional paid-in capital	4,563,537	4,588,303
Cumulative distributions in excess of earnings	(2,003,258)	(1,972,916)
Cumulative other comprehensive loss	(7,293)	(2,436)
Total equity	2,554,220	2,614,194
Total liabilities and equity	$ 4,634,798	$ 4,678,118

XML

Consolidated Balance Sheets Parentheticals (unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Building and improvements, accumulated depreciation	$ 584,830	$ 613,639
Intangible lease assets, accumulated amortization	244,578	250,085
Allowance for doubtful accounts	530	8
Intangible lease origination costs, accumulated amortization	174,180	181,482
Deferred lease costs, accumulated amortization	38,808	40,817
Deferred financing costs, net	4,044	4,492
Bonds payable, deferred financing costs	945	1,020
Intangible lease liabilities, accumulated amortization	$ 82,098	$ 81,496
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	225,000,000	225,000,000
Common stock, shares issued	123,458,960	124,363,073
Common stock, shares outstanding	123,458,960	124,363,073
Term Loans
Deferred financing costs, net	$ 4,044	$ 4,492
Bonds Payable
Deferred financing costs, net	$ 3,546	$ 3,721

XML

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Rental income	$ 99,586	$ 112,809
Tenant reimbursements	19,753	28,249
Hotel income	4,663	4,993
Other property income	2,577	1,492
Revenues	126,579	147,543
Expenses:
Property operating costs	41,336	49,754
Hotel operating costs	4,331	4,591
Asset and property management fees	330	397
Depreciation	29,289	34,007
Amortization	16,075	23,219
General and administrative	10,490	8,044
Acquisition expenses	0	1,995
Costs and expenses	101,851	122,007
Real estate operating income	24,728	25,536
Other income (expense):
Interest expense	(17,897)	(21,484)
Interest and other income	1,805	1,833
Loss on interest rate swaps	0	(6)
Loss on early extinguishment of debt	0	(477)
Nonoperating income (expense)	(16,092)	(20,134)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	8,636	5,402
Income tax benefit (expense)	(77)	196
Loss from unconsolidated joint venture	(1,552)	0
Income before loss on sale of real estate	7,007	5,598
Loss on sale of real estate	(310)	0
Net income	$ 6,697	$ 5,598
Per-share information – basic:
Net income (dollars per share)	$ 0.05	$ 0.04
Weighted-average common shares outstanding – basic	123,393	124,903
Per-share information – diluted:
Net income (dollars per share)	$ 0.05	$ 0.04
Weighted-average common shares outstanding – diluted	123,412	124,935
Dividends per share (dollars per share)	$ 0.30	$ 0.30

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 6,697	$ 5,598
Market value adjustment to interest rate swap	(4,857)	159
Comprehensive income	$ 1,840	$ 5,757

XML

Consolidated Statements of Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Cumulative Distributions in Excess of Earnings	Cumulative Other Comprehensive Income (Loss)
Balance, shares at beginning of period at Dec. 31, 2014		124,973,000
Balance, value at beginning of period at Dec. 31, 2014	$ 2,733,478	$ 1,249	$ 4,601,808	$ (1,867,611)	$ (1,968)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes), shares		104,000
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	394	$ 1	393
Distributions to common stockholders	(37,523)			(37,523)
Net income	5,598			5,598
Market value adjustment to interest rate swap	159				159
Balance, shares at end of period at Mar. 31, 2015		125,077,000
Balance, value at end of period at Mar. 31, 2015	$ 2,702,106	$ 1,250	4,602,201	(1,899,536)	(1,809)
Balance, shares at beginning of period at Dec. 31, 2015	124,363,073	124,363,000
Balance, value at beginning of period at Dec. 31, 2015	$ 2,614,194	$ 1,243	4,588,303	(1,972,916)	(2,436)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of common stock, shares		(1,105,000)
Redemption of common stock, value	(25,000)	$ (11)	(24,989)
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes), shares		201,000
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	225	$ 2	223
Distributions to common stockholders	(37,039)			(37,039)
Net income	6,697			6,697
Market value adjustment to interest rate swap	$ (4,857)				(4,857)
Balance, shares at end of period at Mar. 31, 2016	123,458,960	123,459,000
Balance, value at end of period at Mar. 31, 2016	$ 2,554,220	$ 1,234	$ 4,563,537	$ (2,003,258)	$ (7,293)

XML

Consolidated Statements of Equity Parentheticals (unaudited) - $ / shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Distributions to common stockholders per share (dollars per share)	$ 0.30	$ 0.30
Common Stock
Distributions to common stockholders per share (dollars per share)	$ 0.3	$ 0.3

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities:
Net income	$ 6,697	$ 5,598
Adjustments to reconcile net income to net cash provided by operating activities:
Straight-line rental income	(6,168)	(5,064)
Depreciation	29,289	34,007
Amortization	14,753	20,477
Noncash interest expense	1,012	1,069
Loss on early extinguishment of debt	0	477
Gain on interest rate swaps	0	(1,315)
Loss from unconsolidated joint venture	1,552	0
Loss on sale of real estate	310	0
Stock-based compensation expense	1,382	1,014
Changes in assets and liabilities, net of acquisitions:
Decrease (increase) in tenant receivables, net	798	(3,935)
Increase in prepaid expenses and other assets	(244)	(1,295)
Decrease in accounts payable and accrued expenses	(3,613)	(7,436)
Increase (decrease) in deferred income	(2,928)	935
Net cash provided by operating activities	42,840	44,532
Cash Flows from Investing Activities:
Net proceeds from the sale of real estate	159,406	0
Real estate acquisitions	0	(551,277)
Capital improvements	(14,295)	(17,256)
Deferred lease costs paid	(3,683)	(6,804)
Investments in unconsolidated joint venture	(4,641)	0
Net cash provided by (used in) investing activities	136,787	(575,337)
Cash Flows from Financing Activities:
Financing costs paid	0	(3,429)
Proceeds from lines of credit and notes payable	131,000	463,000
Repayments of lines of credit and notes payable	(57,341)	(358,684)
Proceeds from issuance of bonds payable	0	349,507
Distributions paid to stockholders	(74,393)	(37,523)
Redemptions of common stock	(26,162)	(620)
Net cash provided by (used in) financing activities	(26,896)	412,251
Net increase (decrease) in cash and cash equivalents	152,731	(118,554)
Cash and cash equivalents, beginning of period	32,645	149,790
Cash and cash equivalents, end of period	$ 185,376	$ 31,236

XML

Organization

3 Months Ended

Mar. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Columbia Property Trust, Inc. ("Columbia Property Trust") (NYSE: CXP) is a Maryland corporation that operates as a real estate investment trust ("REIT") for federal income tax purposes and owns and operates commercial real estate properties. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, develops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, or through joint ventures. References to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect, and any unconsolidated joint ventures.

Columbia Property Trust typically invests in high-quality, income-generating office properties. As of March 31, 2016, Columbia Property Trust owned 26 office properties and one hotel, containing approximately 13.3 million square feet of commercial space, located in 12 states and the District of Columbia. All of the properties are wholly owned, except for one property, which is owned through an unconsolidated joint venture, as described in Note 4, Unconsolidated Joint Venture. As of March 31, 2016, the office properties, including Columbia Property Trust's share of the unconsolidated joint venture, were approximately 92.4% leased.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles ("GAAP") for complete financial statements. In the opinion of management, the statements for these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation. For further information, refer to the financial statements and footnotes included in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2015 (the "2015 Form 10-K").

Fair Value Measurements

Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:

Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.

Level 2 – Assets or liabilities valued based on observable market data for similar instruments.

Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.

Real Estate Assets

Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building and site improvements	5-25 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of Real Estate Assets

Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets and liabilities may not be recoverable, Columbia Property Trust assesses the recoverability of these assets and liabilities by determining whether the respective carrying values will be recovered through the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets and liabilities to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of Columbia Property Trust's assets may be carried at more than an amount that could be realized in a current disposition transaction. Columbia Property Trust has determined that there is no impairment in the carrying values of our real estate assets and related intangible assets as of March 31, 2016.

Projections of expected future operating cash flows require that Columbia Property Trust 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 fair value and could result in the misstatement of the carrying value of Columbia Property Trust's real estate assets and related intangible assets and liabilities and net income.

Assets Held for Sale

Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is adjusted to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized. As of March 31, 2016, none of Columbia Property Trust's properties met the criteria to be classified as held for sale in the accompanying consolidated balance sheet.

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust Is the Lessor

Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail).

When calculating the intangible assets and liabilities for above-market and below-market tenant and ground leases where we are either the lessor or the lessee, the difference between the contractual rental rates and our estimate of market rental rates is measured over a period equal to the remaining non-cancelable term of the leases, including significantly below market renewal options for which exercise of the renewal option appears to be reasonably assured. The remaining term of leases with renewal options at terms significantly below market reflect the assumed exercise of such below market renewal options and assume the amortization period would coincide with the extended lease term.

As of March 31, 2016 and December 31, 2015, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):

		Intangible Lease Assets						Intangible Lease Origination Costs			Intangible Below-Market In-Place Lease Liabilities
		Above-Market In-Place Lease Assets			Absorption Period Costs
March 31, 2016	Gross	$	50,463		$	298,982		$	244,740		$	135,252
	Accumulated Amortization	(38,764		)	(187,508		)	(174,180		)	(82,098		)
	Net	$	11,699		$	111,474		$	70,560		$	53,154
December 31, 2015	Gross	$	50,463		$	317,841		$	258,672		$	138,663
	Accumulated Amortization	(37,971		)	(194,446		)	(181,482		)	(81,496		)
	Net	$	12,492		$	123,395		$	77,190		$	57,167

For the three months ended March 31, 2016 and 2015, Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the three months ended March 31, 2016	$	794	$	8,529	$	5,269	$	3,681
For the three months ended March 31, 2015	$	1,367	$	12,362	$	8,157	$	5,411

The remaining net intangible assets and liabilities, as of March 31, 2016, will be amortized as follows (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the remainder of 2016	$	1,769	$	21,133	$	12,751	$	10,084
For the years ending December 31:
2017	1,383		19,396		12,310		9,162
2018	1,041		15,329		9,487		7,218
2019	1,041		13,459		8,507		6,540
2020	1,039		11,487		7,439		5,346
2021	1,032		7,328		3,306		3,095
Thereafter	4,394		23,342		16,760		11,709
	$	11,699	$	111,474	$	70,560	$	53,154

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust Is the Lessee

In-place ground leases where Columbia Property Trust is the lessee may have positive or negative value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption. This calculation includes significantly below-market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible leases assets and liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases. Columbia Property Trust had gross below-market lease assets of approximately $140.9 million as of March 31, 2016 and December 31, 2015, and recognized amortization of these assets of approximately $0.6 million for the three months ended March 31, 2016 and 2015.

As of March 31, 2016, the remaining net below-market intangible lease assets will be amortized as follows (in thousands):

For the remainder of 2016	$	1,912
For the years ending December 31:
2017	2,549
2018	2,549
2019	2,549
2020	2,549
2021	2,549
Thereafter	107,953
	$	122,610

Interest Rate Swap Agreements

Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate swap transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a cash flow hedge, if any, are recognized currently in earnings. All changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment. The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):

		Estimated Fair Value as of
Instrument Type	Balance Sheet Classification	March 31, 2016			December 31, 2015
Derivatives designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(7,293	)	$	(2,436	)

Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable.

	Three Months Ended March 31,
	2016			2015
Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income	$	(4,857	)	$	159
Loss on interest rate swap recognized through earnings	$	—		$	(6	)

During the periods presented, there was no hedge ineffectiveness required to be recognized into earnings on the interest rate swaps that qualified for hedge accounting treatment.

Income Taxes

Columbia Property Trust has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the "Code"), and has operated as such beginning with its taxable year ended December 31, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.

Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), Columbia KCP TRS, LLC ("Columbia KCP TRS"), and Columbia Energy TRS, LLC ("Columbia Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, office properties that Columbia Property Trust does not intend to hold long term and a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.

Reclassification

Certain prior period amounts may be reclassified to conform with the current-period financial statement presentation. Within the financing section of the consolidated statement of cash flows, shares redeemed to fund income tax withholdings presented in prior year is now included in share redemptions.

Recent Accounting Pronouncement

In February 2016, the Financial Accounting Standards Board issued ASU 2016-02, Leases ("ASU 2016-02"), which amends the existing standards for lease accounting by requiring lessees to recognize most leases on their balance sheets, and making targeted changes to lessor accounting and reporting. The new standard will require lessees to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months, and classify such leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method (finance leases), on a straight-line basis over the term of the lease (operating leases). Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance as applies to sales-type leases, direct financing leases and operating leases. ASU 2016-02 supersedes previous leasing standards. ASU 2016-02 is effective for Columbia Property Trust for reporting periods beginning after December 15, 2018, with early adoption permitted. Columbia Property Trust is evaluating the impact ASU 2016-02 will have on its financial position and results of operations.

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Real Estate Transactions

3 Months Ended

Mar. 31, 2016

Real Estate [Abstract]

Real Estate Transactions

Real Estate Transactions

Acquisitions

During the three months ended March 31, 2016, Columbia Property Trust did not acquire any properties. During 2015, Columbia Property Trust acquired the following properties (in thousands):

	315 Park Avenue South Building			1881 Campus Commons Building			116 Huntington Avenue Building			229 West 43rd Street Building
Location	New York, NY			Reston, VA			Boston, MA			New York, NY
Date Acquired	January 7, 2015			January 7, 2015			January 8, 2015			August 4, 2015
Purchase price:
Land	$	119,633		$	7,179		$	—		$	207,233
Building and improvements	232,598			49,273			108,383			265,952
Intangible lease assets	16,912			4,643			7,907			27,039
Intangible below market ground lease assets	—			—			30,244			—
Intangible lease origination costs	4,148			1,603			2,669			10,059
Intangible below market lease liability	(7,487		)	(97		)	(1,878		)	—
Total purchase price	$	365,804		$	62,601		$	147,325		$	510,283

Note 2, Summary of Significant Accounting Policies, providesa discussion of the estimated useful life for each asset class.

315 Park Avenue South Building & 1881 Campus Commons Building

On January 7, 2015, Columbia Property Trust acquired two assets, 315 Park Avenue South, a 327,000-square-foot office building in New York, New York (the "315 Park Avenue South Building"), and 1881 Campus Commons, a 244,000-square-foot office building in Reston, Virginia (the "1881 Campus Commons Building"). This portfolio was acquired for $436.0 million, exclusive of transaction costs and purchase price adjustments, using proceeds from the issuance of $350.0 million bonds payable due in 2025, proceeds from the Revolving Credit Facility, and cash on hand.

As of the acquisition date, the 315 Park Avenue South Building was 94.9% leased to nine tenants, including Credit Suisse (74%). For the period from January 7, 2015 to March 31, 2015, Columbia Property Trust recognized revenues of $6.2 million and a net loss of $1.3 million from the 315 Park Avenue South Building. The net loss includes acquisition expenses of $1.2 million.

As of the acquisition date, the 1881 Campus Commons Building was 78.0% leased to 15 tenants, including SOS International (15%) and Siemens (12%). For the period from January 7, 2015 to March 31, 2015, Columbia Property Trust recognized revenues of $1.5 million and a net loss of $0.6 million from the 1881 Campus Commons Building. The net loss includes acquisition expenses of $0.5 million.

116 Huntington Avenue Building

On January 8, 2015, Columbia Property Trust acquired a 271,000-square-foot office building in Boston, Massachusetts (the "116 Huntington Avenue Building"), for $152.0 million, inclusive of capital credits, using proceeds from the issuance of $350.0 million bonds payable due in 2025, proceeds from the Revolving Credit Facility, and cash on hand. As of the acquisition date, the 116 Huntington Avenue Building was 78.0% leased to 17 tenants, including American Tower (21%), GE Healthcare (13%), and Brigham and Women's (12%). For the period from January 8, 2015 to March 31, 2015, Columbia Property Trust recognized revenues of $2.9 million and a net loss of $0.2 million from the 116 Huntington Avenue Building. The net loss includes acquisition expenses of $0.3 million.

229 West 43rd Street Building

On August 4, 2015, Columbia Property Trust acquired the 481,000-square-foot office portion of the 229 West 43rd Street building, a 16-story,732,000-square-foot building located in the Times Square sub-market of Manhattan in New York, New York (the "229 West 43rd Street Building"), for $516.0 million, exclusive of transaction costs and purchase price adjustments. This acquisition was funded with the $300 Million Bridge Loan and borrowings on the Revolving Credit Facility, as described in Note 5, Line of Credit and Notes Payable. As of the acquisition date, the 229 West 43rd Street Building was 98% leased to nine tenants, including Yahoo! (40%), Snapchat (13%), Collective, Inc. (12%), and MongoDB (10%).

Proforma Financial Information

The following unaudited pro forma statements of operations presented for the three months endedMarch 31, 2015, have been prepared for Columbia Property Trust to give effect to the acquisitions of the 315 Park Avenue South Building, the 1881 Campus Commons Building, the 116 Huntington Avenue Building, and the 229 West 43rd Street Building as if the acquisitions occurred on January 1, 2014. Columbia Property Trust owned these buildings for the entirety of the three months endedMarch 31, 2016. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had these acquisitions been consummated as of January 1, 2014 (in thousands).

	Three Months Ended March 31, 2015
Revenues	$	154,965
Net income	$	6,723
Net income per share - basic	$	0.05
Net income per share - diluted	$	0.05

Dispositions

During 2016 and 2015, Columbia Property Trust closed on the following transactions:

100 East Pratt Property

On March 31, 2016, Columbia Property Trust sold the 100 East Pratt Property in Baltimore, Maryland for $187.0 million, before purchase price adjustments, and recognized a $0.3 million loss on the sale. The net sale proceeds of $159.4 million were used to repay $119.0 million remaining on the $300 Million Bridge Loan on April 1, 2016, and to reduce the outstanding balance of the Revolving Credit Facility.

1881 Campus Commons Building

On December 10, 2015, Columbia Property Trust sold the 1881 Campus Commons Building in Reston, Virginia, for $65.0 million, exclusive of purchase price adjustments and closing costs, yielding a gain of $0.5 million. The proceeds from the sale of the 1881 Campus Commons Building were used to reduce the outstanding balance of the $300 Million Bridge Loan, as described in Note 5, Line of Credit and Notes Payable.

Market Square Buildings - Partial Sale

On October 28, 2015, Columbia Property Trust transferred the Market Square Buildings and the related $325.0 million mortgage note to a joint venture (the "Market Square Joint Venture") and sold a 49% interest in the Market Square Joint Venture to Blackstone Property Partners ("Blackstone") for approximately $120.0 million of net proceeds, which were used to repay a portion of the $300 Million Bridge Loan. As a result of this transaction, Columbia Property Trust recognized a gain on real estate of $3.1 million and retains a 51% interest in the Market Square Joint Venture. The Market Square Joint Venture owns and operates the Market Square Buildings through a REIT ("Market Square REIT East & West, LLC"). See Note 4, Unconsolidated Joint Venture, for additional information.

11 Property Sale

On July 1, 2015, Columbia Property Trust sold 11 properties to an unaffiliated third party for $433.3 million, exclusive of closing costs (the "11 Property Sale"), which resulted in a gain of $20.2 million. The proceeds for 10 of the properties were available on July 1, 2015, and the remaining proceeds were available on August 3, 2015. For the period from January 1, 2015 through July 1, 2015 the aggregate net income, excluding the gain on sale, for the properties included in the 11 Property Sale was $6.5 million. The following properties make up the 11 Property Sale:

170 Park Avenue	Bannockburn Lake III	Acxiom
180 Park Avenue	544 Lakeview	215 Diehl Road
Robbins Road	Highland Landmark III	1580 West Nursery
550 King Street	The Corridors III

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Unconsolidated Joint Venture

3 Months Ended

Mar. 31, 2016

Equity Method Investments and Joint Ventures [Abstract]

Unconsolidated Joint Venture

Unconsolidated Joint Venture

Columbia Property Trust owns a majority interest of 51% in the Market Square Joint Venture, and Blackstone owns the remaining 49% interest in the joint venture. The Market Square Joint Venture owns and operates the Market Square Buildings through Market Square REIT East & West, LLC, which operates as a REIT. The Market Square Buildings are two, 13-story office buildings containing 687,000 square feet of office space in Washington, D.C. Columbia Property Trust shares substantive participation rights with Blackstone, including management selection and termination, and the approval of material operating and capital decisions. As such, Columbia Property Trust uses the equity method of accounting to record its investment in the Market Square Joint Venture. Under the equity method, the investment in the joint venture is recorded at cost and adjusted for cash contributions and distributions, and allocations of income (loss). Cash distributions and earnings are allocated according to the provisions of the joint venture agreement, which are consistent with the ownership percentages for the Market Square Joint Venture.

Columbia Property Trust evaluates the recoverability of its investment in unconsolidated joint venture in accordance with accounting standards for equity investments by first reviewing the investment for any indicators of impairment. If indicators are present, Columbia Property Trust estimates the fair value of the investment. If the carrying value of the investment is greater than the estimated fair value, management makes an assessment of whether the impairment is "temporary" or "other-than-temporary." In making this assessment, management considers the following: (1) the length of time and the extent to which fair value has been less than cost, and (2) Columbia Property Trust's intent and ability to retain its interest long enough for a recovery in market value.

As of March 31, 2016, the outstanding balance on the interest-only Market Square mortgage note is $325.0 million, bearing interest at 5.07%. The Market Square mortgage note matures on July 1, 2023. On October 28, 2015, Columbia Property Trust entered into a guaranty of a $25.0 million portion of the Market Square mortgage note, the amount of which will be reduced as space is leased.

Condensed balance sheet information for the Market Square Joint Venture is as follows (in thousands):

	March 31, 2016		December 31, 2015
Total assets	$	573,428	$	573,073
Total debt	$	324,616	$	324,603
Total equity	$	233,973	$	230,060
Columbia Property Trust's investment	$	121,784	$	118,695

Condensed income statement information for the Market Square Joint Venture is as follows (in thousands):

	Three Months Ended March 31, 2016
Total revenues	$	11,663
Net loss	$	(3,043	)
Columbia Property Trust's share	$	(1,552	)

Columbia Property Trust provides property and asset management services to the Market Square Joint Venture. Under these agreements, Columbia Property Trust oversees the day-to-day operations of the Market Square Joint Venture and the Market Square Buildings, including property management, property accounting, and other property services. Columbia Property Trust receives property management fees equal to 3.0% of the gross revenue of the Market Square Buildings and reimbursements of property operating costs, payable monthly, and asset management fees of $1.0 million annually, in equal quarterly installments. During the three months endedMarch 31, 2016, Columbia Property Trust earned $0.7 million in fees related to these asset and property management services, which are included in other property income on the accompanying consolidated statement of operations. As of March 31, 2016, $0.2 million in property management fees were due from the Market Square Joint Venture, and included in prepaid expenses and other assets on the accompanying consolidated balance sheet.

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Line of Credit and Notes Payable

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Line of Credit and Notes Payable

Line of Credit and Notes Payable

As of March 31, 2016 and December 31, 2015, Columbia Property Trust had the following line of credit and notes payable indebtedness (excluding bonds payable; see Note 6, Bonds Payable) in thousands:

Facility	March 31, 2016			December 31, 2015
Revolving Credit Facility	$	322,000		$	247,000
$300 Million Term Loan	300,000			300,000
$150 Million Term Loan	150,000			150,000
650 California Street Building mortgage note	128,169			128,785
$300 Million Bridge Loan	119,000			119,000
221 Main Street Building mortgage note	73,000			73,000
263 Shuman Boulevard Building mortgage note	49,000			49,000
SanTan Corporate Center mortgage notes	39,000			39,000
One Glenlake Building mortgage note	28,553			29,278
Less: Deferred financing costs related to term loans and notes payable, net of accumulated amortization	(4,044		)	(4,492		)
Total indebtedness	$	1,204,678		$	1,130,571

Fair Value of Debt

The estimated fair value of Columbia Property Trust's line of credit and notes payable as of March 31, 2016 and December 31, 2015, was approximately $1,214.5 million and $1,140.1 million, respectively. The related carrying value of the line of credit and notes payable as of March 31, 2016 and December 31, 2015, was $1,208.7 million and $1,135.1 million, respectively. Columbia Property Trust estimated the fair value of the $300 Million Term Loan (the "$300 Million Term Loan) and the Revolving Credit Facility (the "Revolving Credit Facility") by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates. Therefore, the fair values determined are considered to be based on observable market data for similar instruments (Level 2). The fair values of all other debt instruments were estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing arrangements as of the respective reporting dates. The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

Interest Paid and Capitalized and Debt Covenants

During the three months ended March 31, 2016 and 2015, Columbia Property Trust made interest payments totaling approximately $7.6 million and $15.5 million, respectively, of which approximately $0.1 million was capitalized during the three months ended March 31, 2016 and March 31, 2015. As of March 31, 2016, Columbia Property Trust believes it was in compliance with the restrictive financial covenants on its term loans, the Revolving Credit Facility, and notes payable obligations.

Debt Repayments

On April 1, 2016, Columbia Property Trust repaid the $119.0 million remaining on its $300 million, six-month unsecured loan, which was used to finance a portion of the 229 West 43rd Street Building acquisition in August of 2015 (the "$300 Million Bridge Loan"). The $300 Million Bridge Loan was scheduled to mature on August 4, 2016.

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Bonds Payable

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Bonds Payable

Bonds Payable

In March 2015, Columbia Property Trust OP issued $350.0 million of ten-year, unsecured 4.150% senior notes at 99.859% of their face value (the "2025 Bonds Payable"), which are guaranteed by Columbia Property Trust. Columbia Property Trust OP received proceeds from the 2025 Bonds Payable, net of fees, of $347.2 million. The 2025 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 4.150%. In the accompanying consolidated balance sheets, the 2025 Bonds Payable are shown net of the initial issuance discount of approximately $0.5 million, which will be amortized to interest expense over the term of the 2025 Bonds Payable using the effective interest method. The principal amount of the 2025 Bonds Payable is due and payable on the maturity date, April 1, 2025.

In 2011, Columbia Property Trust OP issued $250.0 million of seven-year, unsecured 5.875% senior notes at 99.295% of their face value (the "2018 Bonds Payable"), which are guaranteed by Columbia Property Trust. Columbia Property Trust OP received proceeds from the 2018 Bonds Payable, net of fees, of $246.7 million. The 2018 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 5.875%, which is subject to adjustment in certain circumstances. In the accompanying consolidated balance sheets, the 2018 Bonds Payable are shown net of the initial issuance discount of approximately $1.8 million, which is amortized to interest expense over the term of the 2018 Bonds Payable using the effective interest method. The principal amount of the 2018 Bonds Payable is due and payable on the maturity date, April 1, 2018.

No interest payments were made on the 2018 Bonds Payable or the 2025 Bonds Payable during the three months ended March 31, 2016 and 2015. Columbia Property Trust is subject to substantially similar covenants under the 2025 Bonds Payable and the 2018 Bonds Payable. As of March 31, 2016, Columbia Property Trust believes it was in compliance with the restrictive covenants on the 2025 Bonds Payable and the 2018 Bonds Payable.

As of March 31, 2016 and December 31, 2015, the estimated fair value of the 2025 Bonds Payable and the 2018 Bonds Payable was approximately $602.2 million and $602.3 million, respectively. The related carrying value of the bonds payable, net of discounts, as of March 31, 2016 and December 31, 2015 was $599.0 million. The fair value of the bonds payable was estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowings as the 2025 Bonds Payable and the 2018 Bonds Payable arrangements as of the respective reporting dates (Level 2). The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments Under Existing Lease Agreements

Certain lease agreements include provisions that, at the option of the tenant, may obligate Columbia Property Trust to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant. As of March 31, 2016, no such options have been exercised that have not been materially satisfied.

Guaranty of Debt of Unconsolidated Joint Venture

Upon entering in to the Market Square Joint Venture in October 2015, Columbia Property Trust entered into a guaranty of a $25.0 million portion of the Market Square mortgage note, the amount of which will be reduced as space is leased. As of March 31, 2016, Columbia Property Trust believes that the likelihood of making a payment under this guaranty is remote; therefore, no liability has been recorded related to this guaranty.

Litigation

Columbia Property Trust is subject to various legal proceedings, claims, and administrative proceedings arising in the ordinary course of business, some of which are expected to be covered by liability insurance. Management makes assumptions and estimates concerning the likelihood and amount of any reasonably possible loss relating to these matters using the latest information available. Columbia Property Trust records a liability for litigation if an unfavorable outcome is probable and the amount of loss or range of loss can be reasonably estimated. If an unfavorable outcome is probable and a reasonable estimate of the loss is a range, Columbia Property Trust accrues the best estimate within the range. If no amount within the range is a better estimate than any other amount, Columbia Property Trust accrues the minimum amount within the range. If an unfavorable outcome is probable but the amount of the loss cannot be reasonably estimated, Columbia Property Trust discloses the nature of the litigation and indicates that an estimate of the loss or range of loss cannot be made. If an unfavorable outcome is reasonably possible and the estimated loss is material, Columbia Property Trust discloses the nature and estimate of the possible loss of the litigation. Columbia Property Trust does not disclose information with respect to litigation where the possibility of an unfavorable outcome is considered to be remote. Based on current expectations, such matters, both individually and in the aggregate, are not expected to have a material adverse effect on the liquidity, results of operations, business, or financial condition of Columbia Property Trust. Columbia Property Trust is not currently involved in any legal proceedings of which management would consider the outcome to be reasonably likely to have a material adverse effect on the results of operations, liquidity, or financial condition of Columbia Property Trust.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Stockholders' Equity

Stockholders' Equity

Common Stock Repurchase Program

Columbia Property Trust's board of directors has authorized the repurchase of up to an aggregate of $200 million of its common stock, par value $0.01 per share, through September 4, 2017 (the "Stock Repurchase Program"). Columbia Property Trust will continue to evaluate the purchase of shares, primarily through open market transactions which are subject to market conditions and other factors. Under the Stock Repurchase Program, since inception, Columbia Property Trust has acquired approximately 1.8 million shares at an average price of $22.60 per share, for aggregate purchases of $41.3 million. As of March 31, 2016, $158.7 million remains available for repurchases under the Stock Repurchase Program. Common stock repurchases are charged against equity as incurred, and the repurchased shares are retired.

Long-Term Incentive Plan

Columbia Property Trust maintains a long-term incentive plan that provides for grants of stock to be made to certain employees and independent directors of Columbia Property Trust (the "LTIP").Columbia Property Trust's shareholders approved the LTIP in July 2013, and a total of 2.0 million shares are authorized and reserved for issuance under the LTIP.

On January 21, 2016, Columbia Property Trust granted 231,015 shares of common stock to employees, net of 20,842 shares withheld to settle the related tax liability, under the LTIP (the "2015 LTIP Employee Grant"), of which 25% vested upon grant, and the remaining shares will vest ratably, with the passage of time, on January 31, 2017, 2018, and 2019. Employees will receive quarterly dividends related to their entire grant, including the unvested shares, on each dividend payment date. A summary of the activity for the employee stock grants under the LTIP for the three months ended March 31, 2016 follows:

	For the Three Months Ended March 31, 2016
	Shares (in thousands)		Weighted-Average Grant-Date Fair Value(1)
Unvested shares - beginning of period	151		$	24.59
Granted	247		$	21.79
Vested	(135	)	$	23.33
Forfeited	(1	)	$	21.90
Unvested shares - end of period(2)	262		$	22.61

⁽¹⁾  Columbia Property Trust determined the weighted-average grant-date fair value using the market closing price on the date of the respective grants.

⁽²⁾  As of March 31, 2016, we expect approximately 249,000 of the 262,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the LTIP.

During the three months ended March 31, 2016 and 2015, Columbia Property Trust paid quarterly installments of the independent directors' annual equity retainers by granting shares to the independent directors, which vested at the time of grant. A summary of these grants, made under the LTIP, follows:

Date of Grant	Shares	Grant-Date Fair Value
2016 Director Grants:
January 4, 2016	7,439	$	23.00
2015 Director Grants:
January 2, 2015	5,850	$	25.75

For the three months ended March 31, 2016 and 2015, Columbia Property Trust incurred the stock-based compensation expense related to the following events (in thousands):

	Three Months Ended March 31,
	2016		2015
Amortization of unvested LTIP awards	$	851	$	563
Future employee awards(1)	360		300
Issuance of shares to independent directors	171		151
Total stock-based compensation expense	$	1,382	$	1,014

⁽¹⁾  These future employee awards relate to service during the period, to be granted in January of the subsequent year, with 25% vesting on the date of grant, and the remaining 75% vesting ratably on January 31st of each of the following three years.

These expenses are included in general and administrative expenses in the accompanying consolidated statements of operations. As of March 31, 2016 and December 31, 2015, there was $5.0 million and $3.2 million, respectively, of unrecognized compensation costs related to unvested awards under the LTIP. This amount will be amortized over the respective vesting period, ranging from one to three years at the time of grant.

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Supplemental Disclosures of Noncash Investing and Financing Activities

3 Months Ended

Mar. 31, 2016

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures of Noncash Investing and Financing Activities

Supplemental Disclosures of Noncash Investing and Financing Activities

Outlined below are significant noncash investing and financing activities for the three months ended March 31, 2016 and 2015 (in thousands):

	Three Months Ended March 31,
	2016			2015
Investments in real estate funded with other assets	$	—		$	27,000
Other assets assumed at acquisition	$	—		$	6,119
Other liabilities assumed at acquisition	$	—		$	2,917
Discount on issuance of bonds payable	$	—		$	494
Amortization of net (premiums) discounts on debt	$	75		$	(119	)
Market value adjustments to interest rate swaps that qualify for hedge accounting treatment	$	(4,857	)	$	159
Accrued capital expenditures and deferred lease costs	$	2,631		$	10,153
Accrued deferred financing costs	$	—		$	461
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	$	225		$	393

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Earnings Per Share

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

For the three months endedMarch 31, 2016 and 2015, in computing the basic and diluted earnings-per-share, net income has been reduced for the dividends paid on unvested shares related to unvested awards under the LTIP and future employee awards, which relate to service in the current period and will be granted in January of the subsequent year. The following table reconciles the numerator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income for the three months endedMarch 31, 2016 and 2015, respectively (in thousands):

	Three Months Ended March 31,
	2016			2015
Net income	$	6,697		$	5,598
Distributions paid on unvested shares	(82		)	(49		)
Net income used to calculate basic and diluted earnings per share	$	6,615		$	5,549

The following table reconciles the denominator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income for the three months endedMarch 31, 2016 and 2015, respectively (in thousands):

	Three Months Ended March 31,
	2016	2015
Weighted-average common shares - basic	123,393	124,903
Plus incremental weighted-average shares from time-vested conversions, less assumed share repurchases:
Previously granted LTIP awards, unvested	5	17
Future LTIP awards for 2016	14	15
Weighted-average common shares - diluted	123,412	124,935

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries

3 Months Ended

Mar. 31, 2016

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Financial Information for Parent Guarantor, Issuer Subsidiary and Non-Guarantor Subsidiaries

Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries

The 2025 Bonds Payable and the 2018 Bonds Payable (see Note 6, Bonds Payable) were issued by Columbia Property Trust OP, and are guaranteed by Columbia Property Trust. In accordance with SEC Rule 3-10(c), Columbia Property Trust includes herein condensed consolidating financial information in lieu of separate financial statements of the subsidiary issuer (Columbia Property Trust OP), as defined in the bond indentures, because all of the following criteria are met:

(1) The subsidiary issuer (Columbia Property Trust OP) is 100% owned by the parent company guarantor (Columbia Property Trust);

(2) The guarantee is full and unconditional; and

(3) No other subsidiary of the parent company guarantor (Columbia Property Trust) guarantees the 2025 Bonds Payable or the 2018 Bonds Payable.

Columbia Property Trust uses the equity method with respect to its investment in subsidiaries included in its condensed consolidating financial statements. Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of March 31, 2016 and December 31, 2015 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of comprehensive income for the three months ended March 31, 2016 and 2015 (in thousands); and its condensed consolidating statements of cash flows for the three months ended March 31, 2016 and 2015 (in thousands).

Condensed Consolidating Balance Sheets (in thousands)

	As of March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	858,449	$	—		$	864,690
Buildings and improvements, net	—		29,300		2,760,703		—			2,790,003
Intangible lease assets, net	—		—		245,783		—			245,783
Construction in progress	—		25		11,198		—			11,223
Total real estate assets	—		35,566		3,876,133		—			3,911,699
Investment in unconsolidated joint venture	—		121,784		—		—			121,784
Cash and cash equivalents	149,341		22,301		13,734		—			185,376
Investment in subsidiaries	2,087,639		1,882,787		—		(3,970,426		)	—
Tenant receivables, net of allowance	—		141		11,590		—			11,731
Straight-line rent receivable	—		1,455		101,912		—			103,367
Prepaid expenses and other assets	317,246		264,587		26,438		(572,492		)	35,779
Intangible lease origination costs, net	—		—		70,560		—			70,560
Deferred lease costs, net	—		1,983		72,519		—			74,502
Investment in development authority bonds	—		—		120,000		—			120,000
Total assets	$	2,554,226	$	2,330,604	$	4,292,886	$	(4,542,918	)	$	4,634,798
Liabilities:
Line of credit and notes payable	$	—	$	888,145	$	886,563	$	(570,030	)	$	1,204,678
Bonds payable, net	—		595,509		—		—			595,509
Accounts payable, accrued expenses, and accrued capital expenditures	6		24,846		60,499		—			85,351
Due to affiliates	—		29		2,433		(2,462		)	—
Deferred income	—		38		21,848		—			21,886
Intangible lease liabilities, net	—		—		53,154		—			53,154
Obligations under capital leases	—		—		120,000		—			120,000
Total liabilities	6		1,508,567		1,144,497		(572,492		)	2,080,578
Equity:
Total equity	2,554,220		822,037		3,148,389		(3,970,426		)	2,554,220
Total liabilities and equity	$	2,554,226	$	2,330,604	$	4,292,886	$	(4,542,918	)	$	4,634,798

Condensed Consolidating Balance Sheets (in thousands)

	As of December 31, 2015
	Columbia Property Trust (Parent) (Guarantor)		Columbia Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	890,226	$	—		$	896,467
Building and improvements, net	—		28,913		2,868,518		—			2,897,431
Intangible lease assets, net	—		—		259,136		—			259,136
Construction in progress	—		917		30,930		—			31,847
Total real estate assets	—		36,071		4,048,810		—			4,084,881
Investment in unconsolidated joint venture	—		118,695		—		—			118,695
Cash and cash equivalents	989		14,969		16,687		—			32,645
Investment in subsidiaries	2,333,408		1,901,581		—		(4,234,989		)	—
Tenant receivables, net of allowance	—		52		11,618		—			11,670
Straight-line rent receivable	—		1,311		107,751		—			109,062
Prepaid expenses and other assets	317,151		265,615		26,153		(573,071		)	35,848
Intangible lease origination costs, net	—		—		77,190		—			77,190
Deferred lease costs, net	—		2,055		86,072		—			88,127
Investment in development authority bonds	—		—		120,000		—			120,000
Total assets	$	2,651,548	$	2,340,349	$	4,494,281	$	(4,808,060	)	$	4,678,118
Liabilities:
Lines of credit, term loans, and notes payable	$	—	$	812,836	$	888,340	$	(570,605	)	$	1,130,571
Bonds payable, net	—		595,259		—		—			595,259
Accounts payable, accrued expenses, and accrued capital expenditures	—		13,313		85,446		—			98,759
Distributions payable	37,354		—		—		—			37,354
Due to affiliates	—		21		2,445		(2,466		)	—
Deferred income	—		200		24,614		—			24,814
Intangible lease liabilities, net	—		—		57,167		—			57,167
Obligations under capital leases	—		—		120,000		—			120,000
Total liabilities	37,354		1,421,629		1,178,012		(573,071		)	2,063,924
Equity:
Total equity	2,614,194		918,720		3,316,269		(4,234,989		)	2,614,194
Total liabilities and equity	$	2,651,548	$	2,340,349	$	4,494,281	$	(4,808,060	)	$	4,678,118

Consolidating Statements of Operations (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—	$	849		$	98,833		$	(96	)	$	99,586
Tenant reimbursements	—		402			19,351			—			19,753
Hotel income	—		—			4,663			—			4,663
Other property income	245		—			2,420			(88		)	2,577
	245		1,251			125,267			(184		)	126,579
Expenses:
Property operating costs	—		771			40,661			(96		)	41,336
Hotel operating costs	—		—			4,331			—			4,331
Asset and property management fees:
Related-party	—		30			—			(30		)	—
Other	—		—			330			—			330
Depreciation	—		698			28,591			—			29,289
Amortization	—		76			15,999			—			16,075
General and administrative	38		2,194			8,316			(58		)	10,490
	38		3,769			98,228			(184		)	101,851
Real estate operating income (loss)	207		(2,518		)	27,039			—			24,728
Other income (expense):
Interest expense	—		(12,405		)	(12,881		)	7,389			(17,897		)
Interest and other income	3,555		3,835			1,804			(7,389		)	1,805
	3,555		(8,570		)	(11,077		)	—			(16,092		)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	3,762		(11,088		)	15,962			—			8,636
Income tax expense	—		(7		)	(70		)	—			(77		)
Income from equity investment	2,935		9,293			—			(13,780		)	(1,552		)
Income before on loss of real estate assets	6,697		(1,802		)	15,892			(13,780		)	7,007
Loss on sale of real estate assets	—		—			(310		)	—			(310		)
Net income	$	6,697	$	(1,802	)	$	15,582		$	(13,780	)	$	6,697

Consolidating Statements of Operations (in thousands)

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)			Columbia  Property Trust OP  (the Issuer)			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	544		$	112,359		$	(94	)	$	112,809
Tenant reimbursements	—			228			28,021			—			28,249
Hotel income	—			—			4,993			—			4,993
Other property income	—			—			1,563			(71		)	1,492
	—			772			146,936			(165		)	147,543
Expenses:
Property operating costs	—			739			49,109			(94		)	49,754
Hotel operating costs	—			—			4,591			—			4,591
Asset and property management fees:
Related-party	—			14			—			(14		)	—
Other	—			—			397			—			397
Depreciation	—			623			33,384			—			34,007
Amortization	—			56			23,163			—			23,219
General and administrative	38			1,956			6,107			(57		)	8,044
Acquisition expenses	—			—			1,995			—			1,995
	38			3,388			118,746			(165		)	122,007
Real estate operating income (loss)	(38		)	(2,616		)	28,190			—			25,536
Other income (expense):
Interest expense	—			(9,225		)	(16,899		)	4,640			(21,484		)
Interest and other income	1,991			2,657			1,825			(4,640		)	1,833
Loss on interest rate swaps	—			—			(6		)	—			(6		)
Loss on early extinguishment of debt	—			(477		)	—			—			(477		)
Income from equity investment	3,645			12,794			—			(16,439		)	—
	5,636			5,749			(15,080		)	(16,439		)	(20,134		)
Income before income tax benefit	5,598			3,133			13,110			(16,439		)	5,402
Income tax benefit (expense)	—			(5		)	201			—			196
Net income	$	5,598		$	3,128		$	13,311		$	(16,439	)	$	5,598

Consolidating Statements of Comprehensive Income (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP  (the Issuer)			Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income	$	6,697		$	(1,802	)	$	15,582	$	(13,780	)	$	6,697
Market value adjustments to interest rate swaps	(4,857		)	(4,857		)	—		4,857			(4,857		)
Comprehensive income	$	1,840		$	(6,659	)	$	15,582	$	(8,923	)	$	1,840

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income	$	5,598	$	3,128	$	13,311	$	(16,439	)	$	5,598
Market value adjustments to interest rate swaps	159		159		—		(159		)	159
Comprehensive income	$	5,757	$	3,287	$	13,311	$	(16,598	)	$	5,757

Consolidating Statements of Cash Flows (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP (the Issuer)			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities	$	206		$	(13,343	)	$	55,977		$	42,840
Cash flows from investing activities:
Net proceeds from sale of real estate	159,406			—			—			159,406
Investment in real estate and related assets	—			(336		)	(17,642		)	(17,978		)
Investment in unconsolidated joint venture	—			(4,641		)	—			(4,641		)
Net cash used in investing activities	159,406			(4,977		)	(17,642		)	136,787
Cash flows from financing activities:
Borrowings, net of fees	—			131,000			—			131,000
Repayments of notes payable	—			(56,000		)	(1,341		)	(57,341		)
Distributions	(74,393		)	—			—			(74,393		)
Redemptions of common stock	(26,162		)	—			—			(26,162		)
Intercompany contributions (distributions)	89,295			(49,348		)	(39,947		)	—
Net cash provided by (used in) financing activities	(11,260		)	25,652			(41,288		)	(26,896		)
Net decrease in cash and cash equivalents	148,352			7,332			(2,953		)	152,731
Cash and cash equivalents, beginning of period	989			14,969			16,687			32,645
Cash and cash equivalents, end of period	$	149,341		$	22,301		$	13,734		$	185,376

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP (the Issuer)			Non- Guarantors			Eliminations			Columbia Property Trust (Consolidated)
Cash flows from operating activities	$	(32	)	$	(10,292	)	$	54,856		$	—		$	44,532
Cash flows from investing activities:
Net proceeds from sale of real estate	—			—			—			—			—
Investment in real estate and related assets	(57,123		)	(494,850		)	(23,364		)	—			(575,337		)
Intercompany contributions (distributions)	(553,203		)	—			—			553,203			—
Net cash used in investing activities	(610,326		)	(494,850		)	(23,364		)	553,203			(575,337		)
Cash flows from financing activities:
Borrowings, net of fees	—			809,078			—			—			809,078
Repayments of line of credit and notes payable	—			(358,000		)	(684		)	—			(358,684		)
Distributions	(37,523		)	—			—			—			(37,523		)
Redemptions of common stock	(620		)	—			—			—			(620		)
Intercompany contributions (distributions)	532,534			51,140			(30,471		)	(553,203		)	—
Net cash provided by (used in) financing activities	494,391			502,218			(31,155		)	(553,203		)	412,251
Net decrease in cash and cash equivalents	(115,967		)	(2,924		)	337			—			(118,554		)
Cash and cash equivalents, beginning of period	119,488			10,504			19,798			—			149,790
Cash and cash equivalents, end of period	$	3,521		$	7,580		$	20,135		$	—		$	31,236

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Subsequent Events

3 Months Ended

Mar. 31, 2016

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

Columbia Property Trust has evaluated subsequent events in connection with the preparation of the consolidated financial statements and notes thereto included in this report on Form 10-Q and did not note any additional subsequent events, other than those disclosed elsewhere in this report.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Basis of Presentation

The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles ("GAAP") for complete financial statements. In the opinion of management, the statements for these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation.

Fair Value Measurements

Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:

Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.

Level 2 – Assets or liabilities valued based on observable market data for similar instruments.

Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.

Real Estate Assets

Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building and site improvements	5-25 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of Real Estate Assets

Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets and liabilities may not be recoverable, Columbia Property Trust assesses the recoverability of these assets and liabilities by determining whether the respective carrying values will be recovered through the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets and liabilities to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of Columbia Property Trust's assets may be carried at more than an amount that could be realized in a current disposition transaction. Columbia Property Trust has determined that there is no impairment in the carrying values of our real estate assets and related intangible assets as of March 31, 2016.

Projections of expected future operating cash flows require that Columbia Property Trust 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 fair value and could result in the misstatement of the carrying value of Columbia Property Trust's real estate assets and related intangible assets and liabilities and net income.

Assets Held for Sale

Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is adjusted to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized.

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust Is the Lessee

In-place ground leases where Columbia Property Trust is the lessee may have positive or negative value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption. This calculation includes significantly below-market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible leases assets and liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases.

Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail).

When calculating the intangible assets and liabilities for above-market and below-market tenant and ground leases where we are either the lessor or the lessee, the difference between the contractual rental rates and our estimate of market rental rates is measured over a period equal to the remaining non-cancelable term of the leases, including significantly below market renewal options for which exercise of the renewal option appears to be reasonably assured. The remaining term of leases with renewal options at terms significantly below market reflect the assumed exercise of such below market renewal options and assume the amortization period would coincide with the extended lease term.

Interest Rate Swap Agreements

Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate swap transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a cash flow hedge, if any, are recognized currently in earnings. All changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment.

Income Taxes

Columbia Property Trust has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the "Code"), and has operated as such beginning with its taxable year ended December 31, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.

Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), Columbia KCP TRS, LLC ("Columbia KCP TRS"), and Columbia Energy TRS, LLC ("Columbia Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, office properties that Columbia Property Trust does not intend to hold long term and a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.

Reclassification

Certain prior period amounts may be reclassified to conform with the current-period financial statement presentation. Within the financing section of the consolidated statement of cash flows, shares redeemed to fund income tax withholdings presented in prior year is now included in share redemptions.

Recent Accounting Pronouncements

In February 2016, the Financial Accounting Standards Board issued ASU 2016-02, Leases ("ASU 2016-02"), which amends the existing standards for lease accounting by requiring lessees to recognize most leases on their balance sheets, and making targeted changes to lessor accounting and reporting. The new standard will require lessees to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months, and classify such leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method (finance leases), on a straight-line basis over the term of the lease (operating leases). Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance as applies to sales-type leases, direct financing leases and operating leases. ASU 2016-02 supersedes previous leasing standards. ASU 2016-02 is effective for Columbia Property Trust for reporting periods beginning after December 15, 2018, with early adoption permitted. Columbia Property Trust is evaluating the impact ASU 2016-02 will have on its financial position and results of operations.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives for Real Estate Assets

The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building and site improvements	5-25 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Schedule of Intangible Assets and Liabilities

As of March 31, 2016 and December 31, 2015, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):

		Intangible Lease Assets						Intangible Lease Origination Costs			Intangible Below-Market In-Place Lease Liabilities
		Above-Market In-Place Lease Assets			Absorption Period Costs
March 31, 2016	Gross	$	50,463		$	298,982		$	244,740		$	135,252
	Accumulated Amortization	(38,764		)	(187,508		)	(174,180		)	(82,098		)
	Net	$	11,699		$	111,474		$	70,560		$	53,154
December 31, 2015	Gross	$	50,463		$	317,841		$	258,672		$	138,663
	Accumulated Amortization	(37,971		)	(194,446		)	(181,482		)	(81,496		)
	Net	$	12,492		$	123,395		$	77,190		$	57,167

For the three months ended March 31, 2016 and 2015, Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the three months ended March 31, 2016	$	794	$	8,529	$	5,269	$	3,681
For the three months ended March 31, 2015	$	1,367	$	12,362	$	8,157	$	5,411

The remaining net intangible assets and liabilities, as of March 31, 2016, will be amortized as follows (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the remainder of 2016	$	1,769	$	21,133	$	12,751	$	10,084
For the years ending December 31:
2017	1,383		19,396		12,310		9,162
2018	1,041		15,329		9,487		7,218
2019	1,041		13,459		8,507		6,540
2020	1,039		11,487		7,439		5,346
2021	1,032		7,328		3,306		3,095
Thereafter	4,394		23,342		16,760		11,709
	$	11,699	$	111,474	$	70,560	$	53,154

Schedule of Future Amortization Expense for Remaining Net Below-Market Lease Assets

As of March 31, 2016, the remaining net below-market intangible lease assets will be amortized as follows (in thousands):

For the remainder of 2016	$	1,912
For the years ending December 31:
2017	2,549
2018	2,549
2019	2,549
2020	2,549
2021	2,549
Thereafter	107,953
	$	122,610

Schedule of Interest Rate Swaps

The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):

		Estimated Fair Value as of
Instrument Type	Balance Sheet Classification	March 31, 2016			December 31, 2015
Derivatives designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(7,293	)	$	(2,436	)

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position

Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable.

	Three Months Ended March 31,
	2016			2015
Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income	$	(4,857	)	$	159
Loss on interest rate swap recognized through earnings	$	—		$	(6	)

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Real Estate Transactions (Tables)

3 Months Ended

Mar. 31, 2016

Real Estate [Abstract]

Schedule of Real Estate Property Acquired

During 2015, Columbia Property Trust acquired the following properties (in thousands):

	315 Park Avenue South Building			1881 Campus Commons Building			116 Huntington Avenue Building			229 West 43rd Street Building
Location	New York, NY			Reston, VA			Boston, MA			New York, NY
Date Acquired	January 7, 2015			January 7, 2015			January 8, 2015			August 4, 2015
Purchase price:
Land	$	119,633		$	7,179		$	—		$	207,233
Building and improvements	232,598			49,273			108,383			265,952
Intangible lease assets	16,912			4,643			7,907			27,039
Intangible below market ground lease assets	—			—			30,244			—
Intangible lease origination costs	4,148			1,603			2,669			10,059
Intangible below market lease liability	(7,487		)	(97		)	(1,878		)	—
Total purchase price	$	365,804		$	62,601		$	147,325		$	510,283

Business Acquisition, Pro Forma Information

The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had these acquisitions been consummated as of January 1, 2014 (in thousands).

	Three Months Ended March 31, 2015
Revenues	$	154,965
Net income	$	6,723
Net income per share - basic	$	0.05
Net income per share - diluted	$	0.05

Schedule of Properties Sold

The following properties make up the 11 Property Sale:

170 Park Avenue	Bannockburn Lake III	Acxiom
180 Park Avenue	544 Lakeview	215 Diehl Road
Robbins Road	Highland Landmark III	1580 West Nursery
550 King Street	The Corridors III

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Unconsolidated Joint Venture (Tables)

3 Months Ended

Mar. 31, 2016

Equity Method Investments and Joint Ventures [Abstract]

Summary of Financial Information for the Market Square Joint Venture

Condensed balance sheet information for the Market Square Joint Venture is as follows (in thousands):

	March 31, 2016		December 31, 2015
Total assets	$	573,428	$	573,073
Total debt	$	324,616	$	324,603
Total equity	$	233,973	$	230,060
Columbia Property Trust's investment	$	121,784	$	118,695

Condensed income statement information for the Market Square Joint Venture is as follows (in thousands):

	Three Months Ended March 31, 2016
Total revenues	$	11,663
Net loss	$	(3,043	)
Columbia Property Trust's share	$	(1,552	)

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Line of Credit and Notes Payable (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Schedule of Line of Credit, Term Loan and Notes Payable Indebtedness Outstanding

As of March 31, 2016 and December 31, 2015, Columbia Property Trust had the following line of credit and notes payable indebtedness (excluding bonds payable; see Note 6, Bonds Payable) in thousands:

Facility	March 31, 2016			December 31, 2015
Revolving Credit Facility	$	322,000		$	247,000
$300 Million Term Loan	300,000			300,000
$150 Million Term Loan	150,000			150,000
650 California Street Building mortgage note	128,169			128,785
$300 Million Bridge Loan	119,000			119,000
221 Main Street Building mortgage note	73,000			73,000
263 Shuman Boulevard Building mortgage note	49,000			49,000
SanTan Corporate Center mortgage notes	39,000			39,000
One Glenlake Building mortgage note	28,553			29,278
Less: Deferred financing costs related to term loans and notes payable, net of accumulated amortization	(4,044		)	(4,492		)
Total indebtedness	$	1,204,678		$	1,130,571

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Summary of the Activity of Employee Stock Grants

A summary of the activity for the employee stock grants under the LTIP for the three months ended March 31, 2016 follows:

	For the Three Months Ended March 31, 2016
	Shares (in thousands)		Weighted-Average Grant-Date Fair Value(1)
Unvested shares - beginning of period	151		$	24.59
Granted	247		$	21.79
Vested	(135	)	$	23.33
Forfeited	(1	)	$	21.90
Unvested shares - end of period(2)	262		$	22.61

⁽¹⁾  Columbia Property Trust determined the weighted-average grant-date fair value using the market closing price on the date of the respective grants.

⁽²⁾  As of March 31, 2016, we expect approximately 249,000 of the 262,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the LTIP.

Summary of Shares Granted to Independent Directors

A summary of these grants, made under the LTIP, follows:

Date of Grant	Shares	Grant-Date Fair Value
2016 Director Grants:
January 4, 2016	7,439	$	23.00
2015 Director Grants:
January 2, 2015	5,850	$	25.75

Schedule of Stock-based Compensation Expense Incurred

For the three months ended March 31, 2016 and 2015, Columbia Property Trust incurred the stock-based compensation expense related to the following events (in thousands):

	Three Months Ended March 31,
	2016		2015
Amortization of unvested LTIP awards	$	851	$	563
Future employee awards(1)	360		300
Issuance of shares to independent directors	171		151
Total stock-based compensation expense	$	1,382	$	1,014

⁽¹⁾  These future employee awards relate to service during the period, to be granted in January of the subsequent year, with 25% vesting on the date of grant, and the remaining 75% vesting ratably on January 31st of each of the following three years.

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Supplemental Disclosures of Noncash Investing and Financing Activities (Tables)

3 Months Ended

Mar. 31, 2016

Supplemental Cash Flow Elements [Abstract]

Significant Noncash Investing and Financing Activities

Outlined below are significant noncash investing and financing activities for the three months ended March 31, 2016 and 2015 (in thousands):

	Three Months Ended March 31,
	2016			2015
Investments in real estate funded with other assets	$	—		$	27,000
Other assets assumed at acquisition	$	—		$	6,119
Other liabilities assumed at acquisition	$	—		$	2,917
Discount on issuance of bonds payable	$	—		$	494
Amortization of net (premiums) discounts on debt	$	75		$	(119	)
Market value adjustments to interest rate swaps that qualify for hedge accounting treatment	$	(4,857	)	$	159
Accrued capital expenditures and deferred lease costs	$	2,631		$	10,153
Accrued deferred financing costs	$	—		$	461
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	$	225		$	393

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share Computations

The following table reconciles the numerator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income for the three months endedMarch 31, 2016 and 2015, respectively (in thousands):

	Three Months Ended March 31,
	2016			2015
Net income	$	6,697		$	5,598
Distributions paid on unvested shares	(82		)	(49		)
Net income used to calculate basic and diluted earnings per share	$	6,615		$	5,549

The following table reconciles the denominator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income for the three months endedMarch 31, 2016 and 2015, respectively (in thousands):

	Three Months Ended March 31,
	2016	2015
Weighted-average common shares - basic	123,393	124,903
Plus incremental weighted-average shares from time-vested conversions, less assumed share repurchases:
Previously granted LTIP awards, unvested	5	17
Future LTIP awards for 2016	14	15
Weighted-average common shares - diluted	123,412	124,935

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries (Tables)

3 Months Ended

Mar. 31, 2016

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Consolidating Balance Sheets

Condensed Consolidating Balance Sheets (in thousands)

	As of March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	858,449	$	—		$	864,690
Buildings and improvements, net	—		29,300		2,760,703		—			2,790,003
Intangible lease assets, net	—		—		245,783		—			245,783
Construction in progress	—		25		11,198		—			11,223
Total real estate assets	—		35,566		3,876,133		—			3,911,699
Investment in unconsolidated joint venture	—		121,784		—		—			121,784
Cash and cash equivalents	149,341		22,301		13,734		—			185,376
Investment in subsidiaries	2,087,639		1,882,787		—		(3,970,426		)	—
Tenant receivables, net of allowance	—		141		11,590		—			11,731
Straight-line rent receivable	—		1,455		101,912		—			103,367
Prepaid expenses and other assets	317,246		264,587		26,438		(572,492		)	35,779
Intangible lease origination costs, net	—		—		70,560		—			70,560
Deferred lease costs, net	—		1,983		72,519		—			74,502
Investment in development authority bonds	—		—		120,000		—			120,000
Total assets	$	2,554,226	$	2,330,604	$	4,292,886	$	(4,542,918	)	$	4,634,798
Liabilities:
Line of credit and notes payable	$	—	$	888,145	$	886,563	$	(570,030	)	$	1,204,678
Bonds payable, net	—		595,509		—		—			595,509
Accounts payable, accrued expenses, and accrued capital expenditures	6		24,846		60,499		—			85,351
Due to affiliates	—		29		2,433		(2,462		)	—
Deferred income	—		38		21,848		—			21,886
Intangible lease liabilities, net	—		—		53,154		—			53,154
Obligations under capital leases	—		—		120,000		—			120,000
Total liabilities	6		1,508,567		1,144,497		(572,492		)	2,080,578
Equity:
Total equity	2,554,220		822,037		3,148,389		(3,970,426		)	2,554,220
Total liabilities and equity	$	2,554,226	$	2,330,604	$	4,292,886	$	(4,542,918	)	$	4,634,798

Condensed Consolidating Balance Sheets (in thousands)

	As of December 31, 2015
	Columbia Property Trust (Parent) (Guarantor)		Columbia Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	890,226	$	—		$	896,467
Building and improvements, net	—		28,913		2,868,518		—			2,897,431
Intangible lease assets, net	—		—		259,136		—			259,136
Construction in progress	—		917		30,930		—			31,847
Total real estate assets	—		36,071		4,048,810		—			4,084,881
Investment in unconsolidated joint venture	—		118,695		—		—			118,695
Cash and cash equivalents	989		14,969		16,687		—			32,645
Investment in subsidiaries	2,333,408		1,901,581		—		(4,234,989		)	—
Tenant receivables, net of allowance	—		52		11,618		—			11,670
Straight-line rent receivable	—		1,311		107,751		—			109,062
Prepaid expenses and other assets	317,151		265,615		26,153		(573,071		)	35,848
Intangible lease origination costs, net	—		—		77,190		—			77,190
Deferred lease costs, net	—		2,055		86,072		—			88,127
Investment in development authority bonds	—		—		120,000		—			120,000
Total assets	$	2,651,548	$	2,340,349	$	4,494,281	$	(4,808,060	)	$	4,678,118
Liabilities:
Lines of credit, term loans, and notes payable	$	—	$	812,836	$	888,340	$	(570,605	)	$	1,130,571
Bonds payable, net	—		595,259		—		—			595,259
Accounts payable, accrued expenses, and accrued capital expenditures	—		13,313		85,446		—			98,759
Distributions payable	37,354		—		—		—			37,354
Due to affiliates	—		21		2,445		(2,466		)	—
Deferred income	—		200		24,614		—			24,814
Intangible lease liabilities, net	—		—		57,167		—			57,167
Obligations under capital leases	—		—		120,000		—			120,000
Total liabilities	37,354		1,421,629		1,178,012		(573,071		)	2,063,924
Equity:
Total equity	2,614,194		918,720		3,316,269		(4,234,989		)	2,614,194
Total liabilities and equity	$	2,651,548	$	2,340,349	$	4,494,281	$	(4,808,060	)	$	4,678,118

Consolidating Statements of Operations

Consolidating Statements of Operations (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—	$	849		$	98,833		$	(96	)	$	99,586
Tenant reimbursements	—		402			19,351			—			19,753
Hotel income	—		—			4,663			—			4,663
Other property income	245		—			2,420			(88		)	2,577
	245		1,251			125,267			(184		)	126,579
Expenses:
Property operating costs	—		771			40,661			(96		)	41,336
Hotel operating costs	—		—			4,331			—			4,331
Asset and property management fees:
Related-party	—		30			—			(30		)	—
Other	—		—			330			—			330
Depreciation	—		698			28,591			—			29,289
Amortization	—		76			15,999			—			16,075
General and administrative	38		2,194			8,316			(58		)	10,490
	38		3,769			98,228			(184		)	101,851
Real estate operating income (loss)	207		(2,518		)	27,039			—			24,728
Other income (expense):
Interest expense	—		(12,405		)	(12,881		)	7,389			(17,897		)
Interest and other income	3,555		3,835			1,804			(7,389		)	1,805
	3,555		(8,570		)	(11,077		)	—			(16,092		)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	3,762		(11,088		)	15,962			—			8,636
Income tax expense	—		(7		)	(70		)	—			(77		)
Income from equity investment	2,935		9,293			—			(13,780		)	(1,552		)
Income before on loss of real estate assets	6,697		(1,802		)	15,892			(13,780		)	7,007
Loss on sale of real estate assets	—		—			(310		)	—			(310		)
Net income	$	6,697	$	(1,802	)	$	15,582		$	(13,780	)	$	6,697

Consolidating Statements of Operations (in thousands)

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)			Columbia  Property Trust OP  (the Issuer)			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	544		$	112,359		$	(94	)	$	112,809
Tenant reimbursements	—			228			28,021			—			28,249
Hotel income	—			—			4,993			—			4,993
Other property income	—			—			1,563			(71		)	1,492
	—			772			146,936			(165		)	147,543
Expenses:
Property operating costs	—			739			49,109			(94		)	49,754
Hotel operating costs	—			—			4,591			—			4,591
Asset and property management fees:
Related-party	—			14			—			(14		)	—
Other	—			—			397			—			397
Depreciation	—			623			33,384			—			34,007
Amortization	—			56			23,163			—			23,219
General and administrative	38			1,956			6,107			(57		)	8,044
Acquisition expenses	—			—			1,995			—			1,995
	38			3,388			118,746			(165		)	122,007
Real estate operating income (loss)	(38		)	(2,616		)	28,190			—			25,536
Other income (expense):
Interest expense	—			(9,225		)	(16,899		)	4,640			(21,484		)
Interest and other income	1,991			2,657			1,825			(4,640		)	1,833
Loss on interest rate swaps	—			—			(6		)	—			(6		)
Loss on early extinguishment of debt	—			(477		)	—			—			(477		)
Income from equity investment	3,645			12,794			—			(16,439		)	—
	5,636			5,749			(15,080		)	(16,439		)	(20,134		)
Income before income tax benefit	5,598			3,133			13,110			(16,439		)	5,402
Income tax benefit (expense)	—			(5		)	201			—			196
Net income	$	5,598		$	3,128		$	13,311		$	(16,439	)	$	5,598

Consolidating Statements of Comprehensive Income

Consolidating Statements of Comprehensive Income (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP  (the Issuer)			Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income	$	6,697		$	(1,802	)	$	15,582	$	(13,780	)	$	6,697
Market value adjustments to interest rate swaps	(4,857		)	(4,857		)	—		4,857			(4,857		)
Comprehensive income	$	1,840		$	(6,659	)	$	15,582	$	(8,923	)	$	1,840

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)		Columbia  Property Trust OP  (the Issuer)		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income	$	5,598	$	3,128	$	13,311	$	(16,439	)	$	5,598
Market value adjustments to interest rate swaps	159		159		—		(159		)	159
Comprehensive income	$	5,757	$	3,287	$	13,311	$	(16,598	)	$	5,757

Consolidating Statements of Cash Flows

Consolidating Statements of Cash Flows (in thousands)

	For the Three Months Ended March 31, 2016
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP (the Issuer)			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities	$	206		$	(13,343	)	$	55,977		$	42,840
Cash flows from investing activities:
Net proceeds from sale of real estate	159,406			—			—			159,406
Investment in real estate and related assets	—			(336		)	(17,642		)	(17,978		)
Investment in unconsolidated joint venture	—			(4,641		)	—			(4,641		)
Net cash used in investing activities	159,406			(4,977		)	(17,642		)	136,787
Cash flows from financing activities:
Borrowings, net of fees	—			131,000			—			131,000
Repayments of notes payable	—			(56,000		)	(1,341		)	(57,341		)
Distributions	(74,393		)	—			—			(74,393		)
Redemptions of common stock	(26,162		)	—			—			(26,162		)
Intercompany contributions (distributions)	89,295			(49,348		)	(39,947		)	—
Net cash provided by (used in) financing activities	(11,260		)	25,652			(41,288		)	(26,896		)
Net decrease in cash and cash equivalents	148,352			7,332			(2,953		)	152,731
Cash and cash equivalents, beginning of period	989			14,969			16,687			32,645
Cash and cash equivalents, end of period	$	149,341		$	22,301		$	13,734		$	185,376

	For the Three Months Ended March 31, 2015
	Columbia Property Trust (Parent) (Guarantor)			Columbia Property Trust OP (the Issuer)			Non- Guarantors			Eliminations			Columbia Property Trust (Consolidated)
Cash flows from operating activities	$	(32	)	$	(10,292	)	$	54,856		$	—		$	44,532
Cash flows from investing activities:
Net proceeds from sale of real estate	—			—			—			—			—
Investment in real estate and related assets	(57,123		)	(494,850		)	(23,364		)	—			(575,337		)
Intercompany contributions (distributions)	(553,203		)	—			—			553,203			—
Net cash used in investing activities	(610,326		)	(494,850		)	(23,364		)	553,203			(575,337		)
Cash flows from financing activities:
Borrowings, net of fees	—			809,078			—			—			809,078
Repayments of line of credit and notes payable	—			(358,000		)	(684		)	—			(358,684		)
Distributions	(37,523		)	—			—			—			(37,523		)
Redemptions of common stock	(620		)	—			—			—			(620		)
Intercompany contributions (distributions)	532,534			51,140			(30,471		)	(553,203		)	—
Net cash provided by (used in) financing activities	494,391			502,218			(31,155		)	(553,203		)	412,251
Net decrease in cash and cash equivalents	(115,967		)	(2,924		)	337			—			(118,554		)
Cash and cash equivalents, beginning of period	119,488			10,504			19,798			—			149,790
Cash and cash equivalents, end of period	$	3,521		$	7,580		$	20,135		$	—		$	31,236

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Organization (Details) ft² in Millions	Mar. 31, 2016 ft² state property hotel
Real Estate
Square feet of real estate | ft²	13.3
Number of states with properties | state	12
Percent of leased office space of owned properties	92.40%
Office Building
Real Estate
Number of real estate properties | property	26
Hotel
Real Estate
Number of real estate properties | hotel	1

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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Impairment loss on real estate assets	$ 0
Amortization of intangible assets	$ 14,753	$ 20,477
Requirement to distribute taxable income (percent)	90.00%
Limit on investments in taxable real estate investment trusts (percent)	25.00%
Intangible Below Market Lease Assets
Property, Plant and Equipment [Line Items]
Gross intangible assets	$ 140,900		$ 140,900
Amortization of intangible assets	$ 600	$ 600
Buildings
Property, Plant and Equipment [Line Items]
Estimated useful life of real estate assets	40 years
Building Improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life of real estate assets	5 years
Building Improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life of real estate assets	25 years

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Summary of Significant Accounting Policies (Schedule of Intangible Assets & Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Assets, Accumulated Amortization	$ (244,578)	$ (250,085)
Intangible lease assets, net	245,783	259,136
Intangible Lease Origination Costs, Accumulated Amortization	(174,180)	(181,482)
Intangible Lease Origination Costs, Net	70,560	77,190
Below Market Lease, Gross	135,252	138,663
Below Market Lease, Accumulated Amortization	(82,098)	(81,496)
Below Market Lease, Net	53,154	57,167
Above-Market In-Place Lease Assets
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Assets, Gross	50,463	50,463
Intangible Lease Assets, Accumulated Amortization	(38,764)	(37,971)
Intangible lease assets, net	11,699	12,492
Absorption Period Costs
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Assets, Gross	298,982	317,841
Intangible Lease Assets, Accumulated Amortization	(187,508)	(194,446)
Intangible lease assets, net	111,474	123,395
Intangible Lease Origination Costs
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Origination Costs, Gross	244,740	258,672
Intangible Lease Origination Costs, Accumulated Amortization	(174,180)	(181,482)
Intangible Lease Origination Costs, Net	$ 70,560	$ 77,190

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Summary of Significant Accounting Policies (Schedule of Recognized Amortization) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Lease Assets	$ 16,075	$ 23,219
Amortization of Below Market In-Place Lease Liabilities	3,681	5,411
Above-Market In-Place Lease Assets
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Lease Assets	794	1,367
Absorption Period Costs
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Lease Assets	8,529	12,362
Intangible Lease Origination Costs
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Lease Assets	$ 5,269	$ 8,157

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Summary of Significant Accounting Policies (Schedule of Future Amortization by Intangible Asset Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
For the years ending December 31:
Intangible lease assets, net	$ 245,783	$ 259,136
Intangible Lease Origination Costs, Net	70,560	77,190
Below Market Lease [Abstract]
For the remainder of 2016	10,084
2017	9,162
2018	7,218
2019	6,540
2020	5,346
2021	3,095
Thereafter	11,709
Below Market Lease, Net	53,154	57,167
Above-Market In-Place Lease Assets
Finite-Lived Intangible Assets [Line Items]
For the remainder of 2016	1,769
For the years ending December 31:
2017	1,383
2018	1,041
2019	1,041
2020	1,039
2021	1,032
Thereafter	4,394
Intangible lease assets, net	11,699	12,492
Absorption Period Costs
Finite-Lived Intangible Assets [Line Items]
For the remainder of 2016	21,133
For the years ending December 31:
2017	19,396
2018	15,329
2019	13,459
2020	11,487
2021	7,328
Thereafter	23,342
Intangible lease assets, net	111,474	123,395
Intangible Lease Origination Costs
Finite-Lived Intangible Assets [Line Items]
For the remainder of 2016	12,751
For the years ending December 31:
2017	12,310
2018	9,487
2019	8,507
2020	7,439
2021	3,306
Thereafter	16,760
Intangible Lease Origination Costs, Net	$ 70,560	$ 77,190

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Summary of Significant Accounting Policies (Schedule of Future Amortization for Below-Market Lease Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
For the years ending December 31:
Intangible lease assets, net	$ 245,783	$ 259,136
Intangible below market ground lease assets
Finite-Lived Intangible Assets [Line Items]
For the remainder of 2016	1,912
For the years ending December 31:
2017	2,549
2018	2,549
2019	2,549
2020	2,549
2021	2,549
Thereafter	107,953
Intangible lease assets, net	$ 122,610

XML

Summary of Significant Accounting Policies (Interest Rate Swaps) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Summary of Derivative Instruments Impact on Results of Operations [Abstract]
Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income	$ (4,857)	$ 159
Loss on interest rate swap recognized through earnings	0	$ (6)
Interest rate contracts | Accounts payable
Derivatives designated as hedging instruments:
Interest rate contracts	$ (7,293)		$ (2,436)

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Real Estate Transactions (Schedule of Properties Acquired) (Details) - USD ($) $ in Thousands	Aug. 04, 2015	Jan. 08, 2015	Jan. 07, 2015
315 Park Avenue South Building
Purchase price:
Land			$ 119,633
Building and improvements			232,598
Intangible below market lease liability			(7,487)
Total purchase price			365,804
1881 Campus Commons Building
Purchase price:
Land			7,179
Building and improvements			49,273
Intangible below market lease liability			(97)
Total purchase price			62,601
116 Huntington Avenue Building
Purchase price:
Land		$ 0
Building and improvements		108,383
Intangible below market lease liability		(1,878)
Total purchase price		147,325
229 West 43rd Street Building
Purchase price:
Land	$ 207,233
Building and improvements	265,952
Intangible below market lease liability	0
Total purchase price	510,283
Intangible lease assets | 315 Park Avenue South Building
Purchase price:
Intangible lease assets			16,912
Intangible lease assets | 1881 Campus Commons Building
Purchase price:
Intangible lease assets			4,643
Intangible lease assets | 116 Huntington Avenue Building
Purchase price:
Intangible lease assets		7,907
Intangible lease assets | 229 West 43rd Street Building
Purchase price:
Intangible lease assets	27,039
Intangible below market ground lease assets | 315 Park Avenue South Building
Purchase price:
Intangible lease assets			0
Intangible below market ground lease assets | 1881 Campus Commons Building
Purchase price:
Intangible lease assets			0
Intangible below market ground lease assets | 116 Huntington Avenue Building
Purchase price:
Intangible lease assets		30,244
Intangible below market ground lease assets | 229 West 43rd Street Building
Purchase price:
Intangible lease assets	0
Intangible lease origination costs | 315 Park Avenue South Building
Purchase price:
Intangible lease assets			4,148
Intangible lease origination costs | 1881 Campus Commons Building
Purchase price:
Intangible lease assets			$ 1,603
Intangible lease origination costs | 116 Huntington Avenue Building
Purchase price:
Intangible lease assets		$ 2,669
Intangible lease origination costs | 229 West 43rd Street Building
Purchase price:
Intangible lease assets	$ 10,059

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Real Estate Transactions (Acquisitions) (Details) ft² in Thousands				3 Months Ended
	Aug. 04, 2015 USD ($) ft² Tenant	Jan. 08, 2015 USD ($) ft² Tenant	Jan. 07, 2015 USD ($) ft² Tenant property	Mar. 31, 2016 USD ($) ft² property	Mar. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)
Business Acquisition [Line Items]
Square feet of real estate | ft²				13,300
Real estate acquisitions				$ 0			$ 551,277,000
Percent of leased office space of owned properties				92.40%
Acquisition expenses				$ 0			1,995,000
315 Park Avenue South Building
Business Acquisition [Line Items]
Revenue recognized since acquisition date					$ 6,200,000
Net income (loss) recognized since acquisition date					(1,300,000)
Acquisition expenses					1,200,000
1881 Campus Commons Building
Business Acquisition [Line Items]
Revenue recognized since acquisition date					1,500,000
Net income (loss) recognized since acquisition date					(600,000)
Acquisition expenses					500,000
116 Huntington Avenue Building
Business Acquisition [Line Items]
Revenue recognized since acquisition date						$ 2,900,000
Net income (loss) recognized since acquisition date						200,000
Acquisition expenses						300,000
229 West 43rd Street Building
Business Acquisition [Line Items]
Square feet of real estate | ft²	732
Customer Concentration Risk | Credit Suisse | 315 Park Avenue South Building
Business Acquisition [Line Items]
Concentration risk percentage			74.00%
Customer Concentration Risk | SOS International | 1881 Campus Commons Building
Business Acquisition [Line Items]
Concentration risk percentage			15.00%
Customer Concentration Risk | Siemens | 1881 Campus Commons Building
Business Acquisition [Line Items]
Concentration risk percentage			12.00%
Customer Concentration Risk | American Tower | 116 Huntington Avenue Building
Business Acquisition [Line Items]
Concentration risk percentage		21.00%
Customer Concentration Risk | GE Healthcare | 116 Huntington Avenue Building
Business Acquisition [Line Items]
Concentration risk percentage		13.00%
Customer Concentration Risk | Brigham and Women's | 116 Huntington Avenue Building
Business Acquisition [Line Items]
Concentration risk percentage		12.00%
Customer Concentration Risk | Yahoo! | 229 West 43rd Street Building
Business Acquisition [Line Items]
Concentration risk percentage	40.00%
Customer Concentration Risk | Snapchat | 229 West 43rd Street Building
Business Acquisition [Line Items]
Concentration risk percentage	13.00%
Customer Concentration Risk | Collective, Inc. | 229 West 43rd Street Building
Business Acquisition [Line Items]
Concentration risk percentage	12.00%
Customer Concentration Risk | MongoDB | 229 West 43rd Street Building
Business Acquisition [Line Items]
Concentration risk percentage	10.00%
Office Building
Business Acquisition [Line Items]
Number of real estate properties | property				26
Office Building | 315 Park Avenue South Building
Business Acquisition [Line Items]
Square feet of real estate | ft²			327
Percent of leased office space of owned properties			94.90%
Number of customers | Tenant			9
Office Building | 1881 Campus Commons Building
Business Acquisition [Line Items]
Square feet of real estate | ft²			244
Percent of leased office space of owned properties			78.00%
Number of customers | Tenant			15
Office Building | 116 Huntington Avenue Building
Business Acquisition [Line Items]
Square feet of real estate | ft²		271
Real estate acquisitions		$ 152,000,000
Percent of leased office space of owned properties		78.00%
Number of customers | Tenant		17
Office Building | 229 West 43rd Street Building
Business Acquisition [Line Items]
Square feet of real estate | ft²	481
Real estate acquisitions	$ 516,000,000
Percent of leased office space of owned properties	98.00%
Number of customers | Tenant	9
Office Building | 315 Park Avenue South and 1881 Campus Commons Building
Business Acquisition [Line Items]
Number of real estate properties | property			2
Real estate acquisitions			$ 436,000,000
Unsecured Debt | 2025 Bonds Payable
Business Acquisition [Line Items]
Face amount of issued debt instrument					$ 350,000,000.0	$ 350,000,000.0	$ 350,000,000.0
Unsecured Debt | $300 Million Bridge Loan
Business Acquisition [Line Items]
Bridge loan	$ 300,000,000.0

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Real Estate Transactions (Pro Forma) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2015 USD ($) $ / shares
Real Estate [Abstract]
Revenues | $	$ 154,965
Net income | $	$ 6,723
Net income (loss) per share - basic (in dollars per share) | $ / shares	$ 0.05
Net income (loss) per share - diluted (in dollars per share) | $ / shares	$ 0.05

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Real Estate Transactions (Dispositions) (Details)						3 Months Ended		6 Months Ended
	Apr. 01, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 10, 2015 USD ($)	Oct. 28, 2015 USD ($)	Jul. 01, 2015 USD ($) property	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Aug. 04, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from the sale of real estate						$ 159,406,000	$ 0
100 East Pratt Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds from sale of real estate		$ 187,000,000
Gain (loss) on sale of real estates		(300,000)
1881 Campus Commons Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds from sale of real estate			$ 65,000,000
Gain (loss) on sale of real estates			$ 500,000
Disposed of by Sale | Eleven Property Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds from sale of real estate					$ 433,300,000
Gain (loss) on sale of real estates					$ 20,200,000
Number of real estate properties | property					11
Aggregate net income excluding the gain on sale								$ 6,500,000
$300 Million Bridge Loan | Unsecured Debt
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Bridge loan									$ 300,000,000.0
Corporate Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of real estates				$ 3,100,000
Net proceeds from the sale of real estate				$ 120,000,000
Ownership percentage				51.00%
Blackstone Property Partners | Corporate Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Mortgage note transferred to joint venture		$ 325,000,000		$ 325,000,000		$ 325,000,000
Ownership percentage				49.00%
Subsequent Event | $300 Million Loan | Unsecured Debt
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayment of debt	$ 119,000,000

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Unconsolidated Joint Venture (Narrative) (Details) ft² in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) ft²	Oct. 28, 2015 USD ($) ft² building
Related Party Transaction [Line Items]
Square feet of real estate | ft²	13,300
Corporate Joint Venture
Related Party Transaction [Line Items]
Ownership percentage		51.00%
Property management fee, percent, payable monthly	3.00%
Asset managementf fee	$ 1,000,000
Blackstone Property Partners | Corporate Joint Venture
Related Party Transaction [Line Items]
Ownership percentage		49.00%
Mortgage note transferred to joint venture	$ 325,000,000	$ 325,000,000
Interest rate for debt instrument (percent)	5.07%
Guaranty liability		$ 25,000,000.0
Washington, D.C. | Market Square East & West LLC | Corporate Joint Venture
Related Party Transaction [Line Items]
Number of real estate properties | building		2
Square feet of real estate | ft²		687
Other Income | Corporate Joint Venture
Related Party Transaction [Line Items]
Asset and property management fees	$ 700,000
Prepaid Expenses and Other Assets | Corporate Joint Venture
Related Party Transaction [Line Items]
Property management fees due to Columbia Property Trust	$ 200,000

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Unconsolidated Joint Venture (Condensed Balance Sheet Information for Market Square Joint Venture) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Total assets	$ 573,428	$ 573,073
Total debt	324,616	324,603
Total equity	233,973	230,060
Columbia Property Trust's investment	$ 121,784	$ 118,695

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Unconsolidated Joint Venture (Condensed Income Statement Information for the Market Square Joint Venture) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Total revenues	$ 11,663
Net loss	(3,043)
Columbia Property Trust's share	$ (1,552)	$ 0

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Line of Credit and Notes Payable (Schedule of Long-Term Debt (excluding Bonds Payable)) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	$ 1,204,678	$ 1,130,571
Less: Deferred financing costs related to term loans and notes payable, net of accumulated amortization	(4,044)	(4,492)
Credit Facilities | Revolving Credit Facility
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	322,000	247,000
Term Loans
Debt Instrument [Line Items]
Less: Deferred financing costs related to term loans and notes payable, net of accumulated amortization	(4,044)	(4,492)
Term Loans | $300 Million Term Loan
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	300,000	300,000
Term Loans | $150 Million Term Loan
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	150,000	150,000
Mortgage Notes | 650 California Street Building mortgage note
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	128,169	128,785
Mortgage Notes | 221 Main Street Building mortgage note
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	73,000	73,000
Mortgage Notes | 263 Shuman Boulevard Building mortgage note
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	49,000	49,000
Mortgage Notes | SanTan Corporate Center mortgage notes
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	39,000	39,000
Mortgage Notes | One Glenlake Building mortgage note
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	28,553	29,278
Unsecured Debt
Debt Instrument [Line Items]
Less: Deferred financing costs related to term loans and notes payable, net of accumulated amortization	(3,546)	(3,721)
Unsecured Debt | $300 Million Bridge Loan
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable	$ 119,000	$ 119,000

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Line of Credit and Notes Payable (Details) - USD ($)			3 Months Ended
	Apr. 01, 2016	Aug. 04, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable			$ 1,204,678,000		$ 1,130,571,000
Loans Payable
Debt Instrument [Line Items]
Estimated fair value of line of credit and notes payable			1,214,500,000		1,140,100,000
Carrying value of the line of credit and notes payable			1,208,700,000		1,135,100,000
Interest payments			7,600,000	$ 15,500,000
Interest capitalized			100,000	$ 100,000
Term Loans | $300 Million Term Loan
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable			$ 300,000,000		$ 300,000,000
Unsecured Debt | $300 Million Loan
Debt Instrument [Line Items]
Lines of credit, term loans, and notes payable		$ 300,000,000
Maturity of debt instrument		6 months
Subsequent Event | Unsecured Debt | $300 Million Loan
Debt Instrument [Line Items]
Repayment of debt	$ 119,000,000

XML

Bonds Payable (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2011	Dec. 31, 2015
Debt Instrument [Line Items]
Proceeds from issuance of bonds payable		$ 0	$ 349,507,000
Initial issuance discount of bonds payable		945,000			$ 1,020,000
Bonds payable, net		595,509,000			595,259,000
Unsecured Debt | 2025 Bonds Payable
Debt Instrument [Line Items]
Face amount of issued debt instrument	$ 350,000,000.0		$ 350,000,000.0
Maturity of debt instrument	10 years
Interest rate for debt instrument (percent)	4.15%		4.15%
Discount rate of face value of issued debt instrument (percent)	99.859%		99.859%
Proceeds from issuance of bonds payable	$ 347,200,000
Frequency of payments	semi-annual
Initial issuance discount of bonds payable	$ 500,000		$ 500,000
Maturity date	Apr. 01, 2025
Unsecured Debt | 2018 Bonds Payable
Debt Instrument [Line Items]
Face amount of issued debt instrument				$ 250,000,000.0
Maturity of debt instrument				7 years
Interest rate for debt instrument (percent)				5.875%
Discount rate of face value of issued debt instrument (percent)				99.295%
Proceeds from issuance of bonds payable				$ 246,700,000
Frequency of payments				semi-annual
Initial issuance discount of bonds payable				$ 1,800,000
Maturity date				Apr. 01, 2018
Interest payments		0	$ 0
Level 2 | Unsecured Debt | 2025 and 2018 Bonds Payable
Debt Instrument [Line Items]
Estimated fair value of debt instrument		602,200,000			602,300,000
Bonds payable, net		$ 599,000,000			$ 599,000,000

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Commitments and Contingencies (Details)	Oct. 28, 2015 USD ($)
Blackstone Property Partners | Corporate Joint Venture
Loss Contingencies [Line Items]
Guaranty liability	$ 25,000,000.0

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Stockholders' Equity (Narrative) (Details) - USD ($)		3 Months Ended
	Jan. 21, 2016	Mar. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Shares		247,000
Unrecognized compensation costs related to unvested awards		$ 5,000,000	$ 3,200,000
2013 Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized		2,000,000
Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares	231,015
Shares withheld to settle tax liability	20,842
Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (in percent)		25.00%
Grant Date | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (in percent)	25.00%
January 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (in percent)	25.00%
January 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (in percent)	25.00%
January 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (in percent)	25.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs recognition period (years)		1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs recognition period (years)		3 years
Stock Repurchase Program | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount		$ 200,000,000.0
Common stock, par value (in dollars per share)		$ 0.01
Number of shares repurchased (in shares)		1,800,000
Shares repurchased, average cost per share		$ 22.60
Value of stock repurchased		$ 41,300,000
Stock repurchase program, amount available for repurchase		$ 158,700,000

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Stockholders' Equity (Unvested Activity Rollforward) (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Shares Rollforward
Unvested shares, beginning of period	151
Granted	247
Vested	(135)
Forfeited	(1)
Unvested shares, end of period	262	[1]
Weighted-Average, Grant-Date Fair Value Rollforward
Unvested shares, beginning of period | $ / shares	$ 24.59	[2]
Granted | $ / shares	21.79	[2]
Vested | $ / shares	23.33	[2]
Forfeited | $ / shares	21.90	[2]
Unvested shares, end of period | $ / shares	$ 22.61	[1],[2]
Shares expected to ultimately vest	249
Expected forfeiture rate	5.00%

[1] As of March 31, 2016, we expect approximately 249,000 of the 262,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the LTIP.

[2] Columbia Property Trust determined the weighted-average grant-date fair value using the market closing price on the date of the respective grants.

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Stockholders' Equity (Summary of Shares Granted to Independent Directors) (Details) - $ / shares				3 Months Ended
		Jan. 04, 2016	Jan. 02, 2015	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares				247,000
Grant-Date Fair Value	[1]			$ 21.79
Director | January 4, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares		7,439
Grant-Date Fair Value		$ 23.00
Director | January 2, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares			5,850
Grant-Date Fair Value			$ 25.75

[1] Columbia Property Trust determined the weighted-average grant-date fair value using the market closing price on the date of the respective grants.

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Stockholders' Equity (Stock-based Compensation Expenses) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense		$ 1,382	$ 1,014
Future employee awards	[1]	360	300
Employees
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense		851	563
Director
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense		$ 171	$ 151
Grant Date
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Award vesting rights (in percent)		25.00%
Annually over Three Years
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Award vesting rights (in percent)		75.00%

[1] These future employee awards relate to service during the period, to be granted in January of the subsequent year, with 25% vesting on the date of grant, and the remaining 75% vesting ratably on January 31st of each of the following three years.

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Supplemental Disclosures of Noncash Investing and Financing Activities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Investments in real estate funded with other assets	$ 0	$ 27,000
Other assets assumed at acquisition	0	6,119
Other liabilities assumed at acquisition	0	2,917
Discount on issuance of bonds payable	0	494
Amortization of net (premiums) discounts on debt	75	(119)
Market value adjustments to interest rate swaps that qualify for hedge accounting treatment	(4,857)	159
Accrued capital expenditures and deferred lease costs	2,631	10,153
Accrued deferred financing costs	0	461
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	$ 225	$ 393

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Earnings Per Share (Basic and Diluted EPS Computations) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 6,697	$ 5,598
Distributions paid on unvested shares	(82)	(49)
Net income used to calculate basic and diluted earnings per share	$ 6,615	$ 5,549
Weighted-average common shares - basic	123,393	124,903
Weighted-average common shares - diluted	123,412	124,935
Previously granted LTIP awards, unvested
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Plus incremental weighted-average shares from time-vested conversions, less assumed share repurchases	5	17
Future LTIP awards for 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Plus incremental weighted-average shares from time-vested conversions, less assumed share repurchases	14	15

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries (Narrative) (Details)	Mar. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Ownership percentage of wholly owned subsidiary	100.00%

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries (Condensed Consolidating Balance Sheets) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Assets:
Land	$ 864,690	$ 896,467
Buildings and improvements, net	2,790,003	2,897,431
Intangible lease assets, net	245,783	259,136
Construction in progress	11,223	31,847
Total real estate assets	3,911,699	4,084,881
Investment in unconsolidated joint venture	121,784	118,695
Cash and cash equivalents	185,376	32,645	$ 31,236	$ 149,790
Investment in subsidiaries	0	0
Tenant receivables, net of allowance	11,731	11,670
Straight-line rent receivable	103,367	109,062
Prepaid expenses and other assets	35,779	35,848
Intangible lease origination costs, net	70,560	77,190
Deferred lease costs, net	74,502	88,127
Investment in development authority bonds	120,000	120,000
Total assets	4,634,798	4,678,118
Liabilities:
Lines of credit, term loans, and notes payable	1,204,678	1,130,571
Bonds payable, net	595,509	595,259
Accounts payable, accrued expenses, and accrued capital expenditures	85,351	98,759
Dividends payable	0	37,354
Due to affiliates	0	0
Deferred income	21,886	24,814
Intangible lease liabilities, net	53,154	57,167
Obligations under capital leases	120,000	120,000
Total liabilities	2,080,578	2,063,924
Equity:
Total equity	2,554,220	2,614,194	2,702,106	2,733,478
Total liabilities and equity	4,634,798	4,678,118
Reportable Legal Entities | Columbia Property Trust (Parent) (Guarantor)
Assets:
Land	0	0
Buildings and improvements, net	0	0
Intangible lease assets, net	0	0
Construction in progress	0	0
Total real estate assets	0	0
Investment in unconsolidated joint venture	0	0
Cash and cash equivalents	149,341	989	3,521	119,488
Investment in subsidiaries	2,087,639	2,333,408
Tenant receivables, net of allowance	0	0
Straight-line rent receivable	0	0
Prepaid expenses and other assets	317,246	317,151
Intangible lease origination costs, net	0	0
Deferred lease costs, net	0	0
Investment in development authority bonds	0	0
Total assets	2,554,226	2,651,548
Liabilities:
Lines of credit, term loans, and notes payable	0	0
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	6	0
Dividends payable		37,354
Due to affiliates	0	0
Deferred income	0	0
Intangible lease liabilities, net	0	0
Obligations under capital leases	0	0
Total liabilities	6	37,354
Equity:
Total equity	2,554,220	2,614,194
Total liabilities and equity	2,554,226	2,651,548
Reportable Legal Entities | Columbia Property Trust OP (the Issuer)
Assets:
Land	6,241	6,241
Buildings and improvements, net	29,300	28,913
Intangible lease assets, net	0	0
Construction in progress	25	917
Total real estate assets	35,566	36,071
Investment in unconsolidated joint venture	121,784	118,695
Cash and cash equivalents	22,301	14,969	7,580	10,504
Investment in subsidiaries	1,882,787	1,901,581
Tenant receivables, net of allowance	141	52
Straight-line rent receivable	1,455	1,311
Prepaid expenses and other assets	264,587	265,615
Intangible lease origination costs, net	0	0
Deferred lease costs, net	1,983	2,055
Investment in development authority bonds	0	0
Total assets	2,330,604	2,340,349
Liabilities:
Lines of credit, term loans, and notes payable	888,145	812,836
Bonds payable, net	595,509	595,259
Accounts payable, accrued expenses, and accrued capital expenditures	24,846	13,313
Dividends payable		0
Due to affiliates	29	21
Deferred income	38	200
Intangible lease liabilities, net	0	0
Obligations under capital leases	0	0
Total liabilities	1,508,567	1,421,629
Equity:
Total equity	822,037	918,720
Total liabilities and equity	2,330,604	2,340,349
Reportable Legal Entities | Non- Guarantors
Assets:
Land	858,449	890,226
Buildings and improvements, net	2,760,703	2,868,518
Intangible lease assets, net	245,783	259,136
Construction in progress	11,198	30,930
Total real estate assets	3,876,133	4,048,810
Investment in unconsolidated joint venture	0	0
Cash and cash equivalents	13,734	16,687	20,135	19,798
Investment in subsidiaries	0	0
Tenant receivables, net of allowance	11,590	11,618
Straight-line rent receivable	101,912	107,751
Prepaid expenses and other assets	26,438	26,153
Intangible lease origination costs, net	70,560	77,190
Deferred lease costs, net	72,519	86,072
Investment in development authority bonds	120,000	120,000
Total assets	4,292,886	4,494,281
Liabilities:
Lines of credit, term loans, and notes payable	886,563	888,340
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	60,499	85,446
Dividends payable		0
Due to affiliates	2,433	2,445
Deferred income	21,848	24,614
Intangible lease liabilities, net	53,154	57,167
Obligations under capital leases	120,000	120,000
Total liabilities	1,144,497	1,178,012
Equity:
Total equity	3,148,389	3,316,269
Total liabilities and equity	4,292,886	4,494,281
Consolidating adjustments
Assets:
Land	0	0
Buildings and improvements, net	0	0
Intangible lease assets, net	0	0
Construction in progress	0	0
Total real estate assets	0	0
Investment in unconsolidated joint venture	0	0
Cash and cash equivalents	0	0	$ 0	$ 0
Investment in subsidiaries	(3,970,426)	(4,234,989)
Tenant receivables, net of allowance	0	0
Straight-line rent receivable	0	0
Prepaid expenses and other assets	(572,492)	(573,071)
Intangible lease origination costs, net	0	0
Deferred lease costs, net	0	0
Investment in development authority bonds	0	0
Total assets	(4,542,918)	(4,808,060)
Liabilities:
Lines of credit, term loans, and notes payable	(570,030)	(570,605)
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	0	0
Dividends payable		0
Due to affiliates	(2,462)	(2,466)
Deferred income	0	0
Intangible lease liabilities, net	0	0
Obligations under capital leases	0	0
Total liabilities	(572,492)	(573,071)
Equity:
Total equity	(3,970,426)	(4,234,989)
Total liabilities and equity	$ (4,542,918)	$ (4,808,060)

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries (Consolidating Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Rental income	$ 99,586	$ 112,809
Tenant reimbursements	19,753	28,249
Hotel income	4,663	4,993
Other property income	2,577	1,492
Revenues	126,579	147,543
Expenses:
Property operating costs	41,336	49,754
Hotel operating costs	4,331	4,591
Asset and property management fees:
Related-party	0	0
Other	330	397
Depreciation	29,289	34,007
Amortization	16,075	23,219
General and administrative	10,490	8,044
Acquisition expenses	0	1,995
Costs and expenses	101,851	122,007
Real estate operating income	24,728	25,536
Other income (expense):
Interest expense	(17,897)	(21,484)
Interest and other income	1,805	1,833
Loss on interest rate swaps	0	(6)
Loss on early extinguishment of debt	0	(477)
Nonoperating income (expense)	(16,092)	(20,134)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	8,636	5,402
Income tax benefit (expense)	(77)	196
Income from equity investment	(1,552)	0
Income before loss on sale of real estate	7,007	5,598
Loss on sale of real estate assets	(310)	0
Net income	6,697	5,598
Reportable Legal Entities | Columbia Property Trust (Parent) (Guarantor)
Revenues:
Rental income	0	0
Tenant reimbursements	0	0
Hotel income	0	0
Other property income	245	0
Revenues	245	0
Expenses:
Property operating costs	0	0
Hotel operating costs	0	0
Asset and property management fees:
Related-party	0	0
Other	0	0
Depreciation	0	0
Amortization	0	0
General and administrative	38	38
Acquisition expenses		0
Costs and expenses	38	38
Real estate operating income	207	(38)
Other income (expense):
Interest expense	0	0
Interest and other income	3,555	1,991
Loss on interest rate swaps		0
Loss on early extinguishment of debt		0
Nonoperating income (expense)	3,555	5,636
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	3,762	5,598
Income tax benefit (expense)	0	0
Income from equity investment	2,935	3,645
Income before loss on sale of real estate	6,697	5,598
Loss on sale of real estate assets	0
Net income	6,697	5,598
Reportable Legal Entities | Columbia Property Trust OP (the Issuer)
Revenues:
Rental income	849	544
Tenant reimbursements	402	228
Hotel income	0	0
Other property income	0	0
Revenues	1,251	772
Expenses:
Property operating costs	771	739
Hotel operating costs	0	0
Asset and property management fees:
Related-party	30	14
Other	0	0
Depreciation	698	623
Amortization	76	56
General and administrative	2,194	1,956
Acquisition expenses		0
Costs and expenses	3,769	3,388
Real estate operating income	(2,518)	(2,616)
Other income (expense):
Interest expense	(12,405)	(9,225)
Interest and other income	3,835	2,657
Loss on interest rate swaps		0
Loss on early extinguishment of debt		(477)
Nonoperating income (expense)	(8,570)	5,749
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	(11,088)	3,133
Income tax benefit (expense)	(7)	(5)
Income from equity investment	9,293	12,794
Income before loss on sale of real estate	(1,802)	3,128
Loss on sale of real estate assets	0
Net income	(1,802)	3,128
Reportable Legal Entities | Non- Guarantors
Revenues:
Rental income	98,833	112,359
Tenant reimbursements	19,351	28,021
Hotel income	4,663	4,993
Other property income	2,420	1,563
Revenues	125,267	146,936
Expenses:
Property operating costs	40,661	49,109
Hotel operating costs	4,331	4,591
Asset and property management fees:
Related-party	0	0
Other	330	397
Depreciation	28,591	33,384
Amortization	15,999	23,163
General and administrative	8,316	6,107
Acquisition expenses		1,995
Costs and expenses	98,228	118,746
Real estate operating income	27,039	28,190
Other income (expense):
Interest expense	(12,881)	(16,899)
Interest and other income	1,804	1,825
Loss on interest rate swaps		(6)
Loss on early extinguishment of debt		0
Nonoperating income (expense)	(11,077)	(15,080)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	15,962	13,110
Income tax benefit (expense)	(70)	201
Income from equity investment	0	0
Income before loss on sale of real estate	15,892	13,311
Loss on sale of real estate assets	(310)
Net income	15,582	13,311
Consolidating adjustments
Revenues:
Rental income	(96)	(94)
Tenant reimbursements	0	0
Hotel income	0	0
Other property income	(88)	(71)
Revenues	(184)	(165)
Expenses:
Property operating costs	(96)	(94)
Hotel operating costs	0	0
Asset and property management fees:
Related-party	(30)	(14)
Other	0	0
Depreciation	0	0
Amortization	0	0
General and administrative	(58)	(57)
Acquisition expenses		0
Costs and expenses	(184)	(165)
Real estate operating income	0	0
Other income (expense):
Interest expense	7,389	4,640
Interest and other income	(7,389)	(4,640)
Loss on interest rate swaps		0
Loss on early extinguishment of debt		0
Nonoperating income (expense)	0	(16,439)
Income before income taxes, unconsolidated joint venture, and loss on sale of real estate	0	(16,439)
Income tax benefit (expense)	0	0
Income from equity investment	(13,780)	(16,439)
Income before loss on sale of real estate	(13,780)	(16,439)
Loss on sale of real estate assets	0
Net income	$ (13,780)	$ (16,439)

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries (Consolidating Statements of Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net income	$ 6,697	$ 5,598
Market value adjustment to interest rate swap	(4,857)	159
Comprehensive income (loss)	1,840	5,757
Reportable Legal Entities | Columbia Property Trust (Parent) (Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net income	6,697	5,598
Market value adjustment to interest rate swap	(4,857)	159
Comprehensive income (loss)	1,840	5,757
Reportable Legal Entities | Columbia Property Trust OP (the Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income	(1,802)	3,128
Market value adjustment to interest rate swap	(4,857)	159
Comprehensive income (loss)	(6,659)	3,287
Reportable Legal Entities | Non- Guarantors
Condensed Financial Statements, Captions [Line Items]
Net income	15,582	13,311
Market value adjustment to interest rate swap	0	0
Comprehensive income (loss)	15,582	13,311
Consolidating adjustments
Condensed Financial Statements, Captions [Line Items]
Net income	(13,780)	(16,439)
Market value adjustment to interest rate swap	4,857	(159)
Comprehensive income (loss)	$ (8,923)	$ (16,598)

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Financial Information for Parent Guarantor, Issuer Subsidiary, and Non-Guarantor Subsidiaries (Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	$ 42,840	$ 44,532
Cash flows from investing activities:
Net proceeds from sale of real estate	159,406	0
Investment in real estate and related assets	(17,978)	(575,337)
Investments in unconsolidated joint venture	(4,641)	0
Intercompany contributions (distributions)		0
Net cash provided by (used in) investing activities	136,787	(575,337)
Cash flows from financing activities:
Borrowings, net of fees	131,000	809,078
Repayments of line of credit and notes payable	(57,341)	(358,684)
Distributions	(74,393)	(37,523)
Redemptions of common stock	(26,162)	(620)
Intercompany contributions (distributions)	0
Intercompany contributions (distributions)		0
Net cash provided by (used in) financing activities	(26,896)	412,251
Net decrease in cash and cash equivalents	152,731	(118,554)
Cash and cash equivalents, beginning of period	32,645	149,790
Cash and cash equivalents, end of period	185,376	31,236
Reportable Legal Entities | Columbia Property Trust (Parent) (Guarantor)
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	206	(32)
Cash flows from investing activities:
Net proceeds from sale of real estate	159,406	0
Investment in real estate and related assets	0	(57,123)
Investments in unconsolidated joint venture	0
Intercompany contributions (distributions)		(553,203)
Net cash provided by (used in) investing activities	159,406	(610,326)
Cash flows from financing activities:
Borrowings, net of fees	0	0
Repayments of line of credit and notes payable	0	0
Distributions	(74,393)	(37,523)
Redemptions of common stock	(26,162)	(620)
Intercompany contributions (distributions)	89,295
Intercompany contributions (distributions)		532,534
Net cash provided by (used in) financing activities	(11,260)	494,391
Net decrease in cash and cash equivalents	148,352	(115,967)
Cash and cash equivalents, beginning of period	989	119,488
Cash and cash equivalents, end of period	149,341	3,521
Reportable Legal Entities | Columbia Property Trust OP (the Issuer)
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(13,343)	(10,292)
Cash flows from investing activities:
Net proceeds from sale of real estate	0	0
Investment in real estate and related assets	(336)	(494,850)
Investments in unconsolidated joint venture	(4,641)
Intercompany contributions (distributions)		0
Net cash provided by (used in) investing activities	(4,977)	(494,850)
Cash flows from financing activities:
Borrowings, net of fees	131,000	809,078
Repayments of line of credit and notes payable	(56,000)	(358,000)
Distributions	0	0
Redemptions of common stock	0	0
Intercompany contributions (distributions)	(49,348)
Intercompany contributions (distributions)		51,140
Net cash provided by (used in) financing activities	25,652	502,218
Net decrease in cash and cash equivalents	7,332	(2,924)
Cash and cash equivalents, beginning of period	14,969	10,504
Cash and cash equivalents, end of period	22,301	7,580
Reportable Legal Entities | Non- Guarantors
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	55,977	54,856
Cash flows from investing activities:
Net proceeds from sale of real estate	0	0
Investment in real estate and related assets	(17,642)	(23,364)
Investments in unconsolidated joint venture	0
Intercompany contributions (distributions)		0
Net cash provided by (used in) investing activities	(17,642)	(23,364)
Cash flows from financing activities:
Borrowings, net of fees	0	0
Repayments of line of credit and notes payable	(1,341)	(684)
Distributions	0	0
Redemptions of common stock	0	0
Intercompany contributions (distributions)	(39,947)
Intercompany contributions (distributions)		(30,471)
Net cash provided by (used in) financing activities	(41,288)	(31,155)
Net decrease in cash and cash equivalents	(2,953)	337
Cash and cash equivalents, beginning of period	16,687	19,798
Cash and cash equivalents, end of period	13,734	20,135
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities		0
Cash flows from investing activities:
Net proceeds from sale of real estate		0
Investment in real estate and related assets		0
Intercompany contributions (distributions)		553,203
Net cash provided by (used in) investing activities		553,203
Cash flows from financing activities:
Borrowings, net of fees		0
Repayments of line of credit and notes payable		0
Distributions		0
Redemptions of common stock		0
Intercompany contributions (distributions)		(553,203)
Net cash provided by (used in) financing activities		(553,203)
Net decrease in cash and cash equivalents		0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$ 0	$ 0