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 September 30, 2018
OR
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period fromto
Commission File Number 1-13232 (Apartment Investment and Management Company)
Commission File Number 0-24497 (AIMCO Properties, L.P.)
Apartment Investment and Management Company
AIMCO Properties, L.P.
(Exact name of registrant as specified in its charter)

Maryland (Apartment Investment and Management Company)	84-1259577
Delaware (AIMCO Properties, L.P.)	84-1275621
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
4582 South Ulster Street, Suite 1100
Denver, Colorado	80237
(Address of principal executive offices)	(Zip Code)
(303) 757-8101
(Registrant’s telephone number, including area code)
Not Applicable
(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.
Apartment Investment and Management Company: Yes x    No o	AIMCO Properties, L.P.: 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).
Apartment Investment and Management Company: Yes x    No o	AIMCO Properties, L.P.: Yes x    No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):
Apartment Investment and Management Company:
Large accelerated filer	x		Accelerated filer	o
Non-accelerated filer	o	(Do not check if a smaller reporting company)	Smaller reporting company	o
			Emerging growth company	o
AIMCO Properties, L.P.:
Large accelerated filer	o		Accelerated filer	x
Non-accelerated filer	o	(Do not check if a smaller reporting company)	Smaller reporting company	o
			Emerging growth company	o
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the exchange act.

Apartment Investment and Management Company: o AIMCO Properties, L.P.: o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Apartment Investment and Management Company: Yes	o	No	x	AIMCO Properties, L.P.: Yes	o	No	x

_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

The number of shares of Apartment Investment and Management Company Class A Common Stock outstanding as of November 1, 2018: 155,644,246

The number of AIMCO Properties, L.P. Partnership Common Units outstanding as of November 1, 2018: 164,665,715

EXPLANATORY NOTE

This filing combines the reports on Form 10-Q for the quarterly period ended September 30, 2018, of Apartment Investment and Management Company, or Aimco, and AIMCO Properties, L.P., or the Aimco Operating Partnership. Where it is important to distinguish between the two entities, we refer to them specifically. Otherwise, references to “we,” “us” or “our” mean, collectively, Aimco, the Aimco Operating Partnership and their consolidated entities.

Aimco, a Maryland corporation, is a self-administered and self-managed real estate investment trust, or REIT. Aimco, through wholly-owned subsidiaries, is the general and special limited partner of, and as of September 30, 2018, owned a 94.6% ownership interest in the common partnership units of, the Aimco Operating Partnership. The remaining 5.4% interest is owned by limited partners. As the sole general partner of the Aimco Operating Partnership, Aimco has exclusive control of the Aimco Operating Partnership’s day-to-day management.

The Aimco Operating Partnership holds all of Aimco’s assets and manages the daily operations of Aimco’s business. Pursuant to the Aimco Operating Partnership agreement, Aimco is required to contribute to the Aimco Operating Partnership any assets, which it may acquire including all proceeds from the offerings of its securities. In exchange for the contribution of these assets, Aimco receives additional interests in the Aimco Operating Partnership with similar terms (e.g., if Aimco contributes proceeds of a stock offering, Aimco receives partnership units with terms substantially similar to the stock issued by Aimco).

We believe combining the periodic reports of Aimco and the Aimco Operating Partnership into this single report provides the following benefits:

• We present our business as a whole, in the same manner our management views and operates the business;

• We eliminate duplicative disclosure and provide a more streamlined and readable presentation because a substantial portion of the disclosures apply to both Aimco and the Aimco Operating Partnership; and

• We save time and cost through the preparation of a single combined report rather than two separate reports.

We operate Aimco and the Aimco Operating Partnership as one enterprise, the management of Aimco directs the management and operations of the Aimco Operating Partnership, and the members of the Board of Directors of Aimco are identical to those of the Aimco Operating Partnership.

We believe it is important to understand the few differences between Aimco and the Aimco Operating Partnership in the context of how Aimco and the Aimco Operating Partnership operate as a consolidated company. Aimco has no assets or liabilities other than its investment in the Aimco Operating Partnership. Also, Aimco is a corporation that issues publicly traded equity from time to time, whereas the Aimco Operating Partnership is a partnership that has no publicly traded equity. Except for the net proceeds from stock offerings by Aimco, which are contributed to the Aimco Operating Partnership in exchange for additional limited partnership interests (of a similar type and in an amount equal to the shares of stock sold in the offering), the Aimco Operating Partnership generates all remaining capital required by its business. These sources include the Aimco Operating Partnership’s working capital, net cash provided by operating activities, borrowings under its revolving credit facility, the issuance of debt and equity securities, including additional partnership units, and proceeds received from the sale of apartment communities.

Equity, partners’ capital and noncontrolling interests are the main areas of difference between the condensed consolidated financial statements of Aimco and those of the Aimco Operating Partnership. Interests in the Aimco Operating Partnership held by entities other than Aimco, which we refer to as OP Units, are classified within partners’ capital in the Aimco Operating Partnership’s financial statements and as noncontrolling interests in Aimco’s financial statements.

To help investors understand the differences between Aimco and the Aimco Operating Partnership, this report provides: separate condensed consolidated financial statements for Aimco and the Aimco Operating Partnership; a single set of condensed consolidated notes to such financial statements that includes separate discussions of each entity’s stockholders’ equity or partners’ capital, as applicable; and a combined Management’s Discussion and Analysis of Financial Condition and Results of Operations section that includes discrete information related to each entity, where appropriate.

This report also includes separate Part I, Item 4. Controls and Procedures sections and separate Exhibits 31 and 32 certifications for Aimco and the Aimco Operating Partnership in order to establish that the requisite certifications have been made and that Aimco and the Aimco Operating Partnership are both compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 18 U.S.C. §1350.

1

APARTMENT INVESTMENT AND MANAGEMENT COMPANY

AIMCO PROPERTIES, L.P.

TABLE OF CONTENTS

FORM 10-Q

		Page
	PART I. FINANCIAL INFORMATION
ITEM 1.	Financial Statements
	Apartment Investment and Management Company:
	Condensed Consolidated Balance Sheets (Unaudited)	3
	Condensed Consolidated Statements of Operations (Unaudited)	4
	Condensed Consolidated Statements of Comprehensive Income (Unaudited)	5
	Condensed Consolidated Statements of Cash Flows (Unaudited)	6
	AIMCO Properties, L.P.:
	Condensed Consolidated Balance Sheets (Unaudited)	7
	Condensed Consolidated Statements of Operations (Unaudited)	8
	Condensed Consolidated Statements of Comprehensive Income (Unaudited)	9
	Condensed Consolidated Statements of Cash Flows (Unaudited)	10
	Notes to the Condensed Consolidated Financial Statements of Apartment Investment and Management Company and AIMCO Properties, L.P. (Unaudited)	11
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	22
ITEM 3.	Quantitative and Qualitative Disclosures About Market Risk	43
ITEM 4.	Controls and Procedures	43
	PART II. OTHER INFORMATION
ITEM 1A.	Risk Factors	44
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
ITEM 6.	Exhibits	45
Signatures	.	47

2

PART I. FINANCIAL INFORMATION

ITEM 1. Financial Statements

APARTMENT INVESTMENT AND MANAGEMENT COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

(Unaudited)

	September 30, 2018			December 31, 2017
ASSETS
Buildings and improvements	$	6,503,956		$	6,174,149
Land	1,765,678			1,753,604
Total real estate	8,269,634			7,927,753
Accumulated depreciation	(2,538,979		)	(2,522,358		)
Net real estate	5,730,655			5,405,395
Cash and cash equivalents	58,032			60,498
Restricted cash	46,267			34,827
Other assets	350,067			272,739
Assets held for sale	—			17,959
Assets of partnerships served by Asset Management business:
Real estate, net	—			224,873
Cash and cash equivalents	—			16,288
Restricted cash	—			30,928
Other assets	—			15,533
Total assets	$	6,185,021		$	6,079,040
LIABILITIES AND EQUITY
Non-recourse property debt secured by Real Estate communities, net	$	3,646,789		$	3,545,109
Term loan, net	—			249,501
Revolving credit facility borrowings	—			67,160
Total indebtedness associated with Real Estate portfolio	3,646,789			3,861,770
Accrued liabilities and other	242,782			213,027
Liabilities of partnerships served by Asset Management business:
Non-recourse property debt, net	—			227,141
Accrued liabilities and other	—			19,812
Total liabilities	3,889,571			4,321,750
Preferred noncontrolling interests in Aimco Operating Partnership	101,320			101,537
Commitments and contingencies (Note 4)
Equity:
Perpetual Preferred Stock	125,000			125,000
Common Stock, $0.01 par value, 500,787,260 shares authorized, 157,352,109 and 157,189,447 shares issued/outstanding at September 30, 2018 and December 31, 2017, respectively	1,574			1,572
Additional paid-in capital	3,888,312			3,900,042
Accumulated other comprehensive income	4,850			3,603
Distributions in excess of earnings	(1,894,054		)	(2,367,073		)
Total Aimco equity	2,125,682			1,663,144
Noncontrolling interests in consolidated real estate partnerships	(1,605		)	(1,716		)
Common noncontrolling interests in Aimco Operating Partnership	70,053			(5,675		)
Total equity	2,194,130			1,655,753
Total liabilities and equity	$	6,185,021		$	6,079,040

See notes to condensed consolidated financial statements.

3

APARTMENT INVESTMENT AND MANAGEMENT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

(Unaudited)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2018			2017			2018			2017
REVENUES
Rental and other property revenues attributable to Real Estate	$	234,048		$	233,708		$	690,571		$	686,639
Rental and other property revenues of partnerships served by Asset Management business	5,022			18,232			42,830			55,327
Tax credit and transaction revenues	3,411			2,695			6,987			8,242
Total revenues	242,481			254,635			740,388			750,208
OPERATING EXPENSES
Property operating expenses attributable to Real Estate	78,254			81,244			232,572			239,954
Property operating expenses of partnerships served by Asset Management business	2,608			8,872			20,865			26,458
Depreciation and amortization	96,406			92,513			286,439			268,836
General and administrative expenses	12,479			10,529			37,196			31,599
Other expenses, net	5,780			2,272			13,624			6,661
Total operating expenses	195,527			195,430			590,696			573,508
Operating income	46,954			59,205			149,692			176,700
Interest income	2,712			2,047			7,768			6,251
Interest expense	(45,492		)	(50,682		)	(143,193		)	(145,422		)
Other, net	(283		)	6,937			141			7,602
Income before income taxes and gain (loss) on dispositions	3,891			17,507			14,408			45,131
Income tax benefit	27,941			4,870			69,724			14,878
Income before gain (loss) on dispositions	31,832			22,377			84,132			60,009
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	572,085			(233		)	622,631			881
Net income	603,917			22,144			706,763			60,890
Noncontrolling interests:
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(1,794		)	249			(8,045		)	(1,515		)
Net income attributable to preferred noncontrolling interests in Aimco Operating Partnership	(1,934		)	(1,938		)	(5,805		)	(5,826		)
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	(30,198		)	(820		)	(34,093		)	(2,164		)
Net income attributable to noncontrolling interests	(33,926		)	(2,509		)	(47,943		)	(9,505		)
Net income attributable to Aimco	569,991			19,635			658,820			51,385
Net income attributable to Aimco preferred stockholders	(2,148		)	(2,148		)	(6,445		)	(6,445		)
Net income attributable to participating securities	(814		)	(57		)	(1,004		)	(176		)
Net income attributable to Aimco common stockholders	$	567,029		$	17,430		$	651,371		$	44,764
Net income attributable to Aimco per common share – basic	$	3.62		$	0.11		$	4.16		$	0.29
Net income attributable to Aimco per common share – diluted	$	3.61		$	0.11		$	4.15		$	0.29
Dividends declared per common share	$	0.38		$	0.36		$	1.14		$	1.08
Weighted average common shares outstanding – basic	156,711			156,306			156,674			156,290
Weighted average common shares outstanding – diluted	156,938			156,835			156,836			156,768

See notes to condensed consolidated financial statements.

4

APARTMENT INVESTMENT AND MANAGEMENT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands)

(Unaudited)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2018			2017			2018			2017
Net income	$	603,917		$	22,144		$	706,763		$	60,890
Other comprehensive gain:
Realized and unrealized gains (losses) on interest rate swaps	—			75			—			(280		)
Losses on interest rate swaps reclassified into earnings from accumulated other comprehensive loss	757			594			1,391			1,349
Unrealized gains (losses) on available for sale debt securities	979			381			(72		)	(40		)
Other comprehensive gain	1,736			1,050			1,319			1,029
Comprehensive income	605,653			23,194			708,082			61,919
Comprehensive income attributable to noncontrolling interests	(34,020		)	(2,557		)	(48,015		)	(9,647		)
Comprehensive income attributable to Aimco	$	571,633		$	20,637		$	660,067		$	52,272

See notes to condensed consolidated financial statements.

5

APARTMENT INVESTMENT AND MANAGEMENT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Nine Months Ended
	September 30,
	2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	706,763		$	60,890
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	286,439			268,836
Gain on dispositions of real estate and the Asset Management business, inclusive of related income tax	(622,631		)	(881		)
Income tax benefit	(69,724		)	(14,878		)
Other adjustments	11,762			398
Net changes in operating assets and operating liabilities	(9,683		)	(19,216		)
Net cash provided by operating activities	302,926			295,149
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(212,358		)	(11,706		)
Capital expenditures	(253,149		)	(266,623		)
Proceeds from dispositions of real estate	708,464			10,888
Purchases of corporate assets	(5,530		)	(7,358		)
Other investing activities	1,695			(1,086		)
Net cash provided by (used in) investing activities	239,122			(275,885		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	360,613			165,785
Principal repayments of non-recourse property debt	(403,141		)	(250,674		)
(Repayment of) proceeds from term loan	(250,000		)	250,000
Net (repayments of) borrowings on revolving credit facility	(67,160		)	338,290
Payment of dividends to holders of Preferred Stock	(6,445		)	(6,445		)
Payment of dividends to holders of Common Stock	(178,937		)	(168,987		)
Payment of distributions to noncontrolling interests	(22,549		)	(15,829		)
Purchases and redemptions of noncontrolling interests	(12,256		)	(324,265		)
Other financing activities	(415		)	(4,693		)
Net cash used in financing activities	(580,290		)	(16,818		)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(38,242		)	2,446
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	142,541			131,150
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$	104,299		$	133,596

See notes to condensed consolidated financial statements.

6

AIMCO PROPERTIES, L.P.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands)

(Unaudited)

	September 30, 2018			December 31, 2017
ASSETS
Buildings and improvements	$	6,503,956		$	6,174,149
Land	1,765,678			1,753,604
Total real estate	8,269,634			7,927,753
Accumulated depreciation	(2,538,979		)	(2,522,358		)
Net real estate	5,730,655			5,405,395
Cash and cash equivalents	58,032			60,498
Restricted cash	46,267			34,827
Other assets	350,067			272,739
Assets held for sale	—			17,959
Assets of partnerships served by Asset Management business:
Real estate, net	—			224,873
Cash and cash equivalents	—			16,288
Restricted cash	—			30,928
Other assets	—			15,533
Total assets	$	6,185,021		$	6,079,040
LIABILITIES AND EQUITY
Non-recourse property debt secured by Real Estate communities, net	$	3,646,789		$	3,545,109
Term loan, net	—			249,501
Revolving credit facility borrowings	—			67,160
Total indebtedness associated with Real Estate portfolio	3,646,789			3,861,770
Accrued liabilities and other	242,782			213,027
Liabilities of partnerships served by Asset Management business:
Non-recourse property debt, net	—			227,141
Accrued liabilities and other	—			19,812
Total liabilities	3,889,571			4,321,750
Redeemable preferred units	101,320			101,537
Commitments and contingencies (Note 4)
Partners’ capital:
Preferred units	125,000			125,000
General Partner and Special Limited Partner	2,000,682			1,538,144
Limited Partners	70,053			(5,675		)
Partners’ capital attributable to the Aimco Operating Partnership	2,195,735			1,657,469
Noncontrolling interests in consolidated real estate partnerships	(1,605		)	(1,716		)
Total partners’ capital	2,194,130			1,655,753
Total liabilities and partners’ capital	$	6,185,021		$	6,079,040

See notes to condensed consolidated financial statements.

7

AIMCO PROPERTIES, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per unit data)

(Unaudited)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2018			2017			2018			2017
REVENUES
Rental and other property revenues attributable to Real Estate	$	234,048		$	233,708		$	690,571		$	686,639
Rental and other property revenues of partnerships served by Asset Management business	5,022			18,232			42,830			55,327
Tax credit and transaction revenues	3,411			2,695			6,987			8,242
Total revenues	242,481			254,635			740,388			750,208
OPERATING EXPENSES
Property operating expenses attributable to Real Estate	78,254			81,244			232,572			239,954
Property operating expenses of partnerships served by Asset Management business	2,608			8,872			20,865			26,458
Depreciation and amortization	96,406			92,513			286,439			268,836
General and administrative expenses	12,479			10,529			37,196			31,599
Other expenses, net	5,780			2,272			13,624			6,661
Total operating expenses	195,527			195,430			590,696			573,508
Operating income	46,954			59,205			149,692			176,700
Interest income	2,712			2,047			7,768			6,251
Interest expense	(45,492		)	(50,682		)	(143,193		)	(145,422		)
Other, net	(283		)	6,937			141			7,602
Income before income taxes and gain (loss) on dispositions	3,891			17,507			14,408			45,131
Income tax benefit	27,941			4,870			69,724			14,878
Income before gain (loss) on dispositions	31,832			22,377			84,132			60,009
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	572,085			(233		)	622,631			881
Net income	603,917			22,144			706,763			60,890
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(1,794		)	249			(8,045		)	(1,515		)
Net income attributable to the Aimco Operating Partnership	602,123			22,393			698,718			59,375
Net income attributable to the Aimco Operating Partnership’s preferred unitholders	(4,082		)	(4,086		)	(12,250		)	(12,271		)
Net income attributable to participating securities	(941		)	(61		)	(1,145		)	(184		)
Net income attributable to the Aimco Operating Partnership’s common unitholders	$	597,100		$	18,246		$	685,323		$	46,920
Net income attributable to the Aimco Operating Partnership per common unit – basic	$	3.62		$	0.11		$	4.17		$	0.29
Net income attributable to the Aimco Operating Partnership per common unit – diluted	$	3.61		$	0.11		$	4.16		$	0.29
Distributions declared per common unit	$	0.38		$	0.36		$	1.14		$	1.08
Weighted average common units outstanding – basic	165,081			163,664			164,493			163,739
Weighted average common units outstanding – diluted	165,326			164,194			164,654			164,218

See notes to condensed consolidated financial statements.

8

AIMCO PROPERTIES, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands)

(Unaudited)

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2018			2017		2018			2017
Net income	$	603,917		$	22,144	$	706,763		$	60,890
Other comprehensive gain:
Realized and unrealized gains (losses) on interest rate swaps	—			75		—			(280		)
Losses on interest rate swaps reclassified into earnings from accumulated other comprehensive loss	757			594		1,391			1,349
Unrealized gains (losses) on available for sale debt securities	979			381		(72		)	(40		)
Other comprehensive gain	1,736			1,050		1,319			1,029
Comprehensive income	605,653			23,194		708,082			61,919
Comprehensive (income) loss attributable to noncontrolling interests	(1,794		)	249		(8,045		)	(1,616		)
Comprehensive income attributable to the Aimco Operating Partnership	$	603,859		$	23,443	$	700,037		$	60,303

See notes to condensed consolidated financial statements.

9

AIMCO PROPERTIES, L.P.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Nine Months Ended
	September 30,
	2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	706,763		$	60,890
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	286,439			268,836
Gain on dispositions of real estate and the Asset Management business, inclusive of related income tax	(622,631		)	(881		)
Income tax benefit	(69,724		)	(14,878		)
Other adjustments	11,762			398
Net changes in operating assets and operating liabilities	(9,683		)	(19,216		)
Net cash provided by operating activities	302,926			295,149
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(212,358		)	(11,706		)
Capital expenditures	(253,149		)	(266,623		)
Proceeds from dispositions of real estate	708,464			10,888
Purchases of corporate assets	(5,530		)	(7,358		)
Other investing activities	1,695			(1,086		)
Net cash provided by (used in) investing activities	239,122			(275,885		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	360,613			165,785
Principal repayments of non-recourse property debt	(403,141		)	(250,674		)
(Repayment of) proceeds from term loan	(250,000		)	250,000
Net (repayments of) borrowings on revolving credit facility	(67,160		)	338,290
Payment of distributions to holders of Preferred Units	(12,250		)	(12,271		)
Payment of distributions to General Partner and Special Limited Partner	(178,937		)	(168,987		)
Payment of distributions to Limited Partners	(8,810		)	(8,026		)
Payment of distributions to noncontrolling interests	(7,934		)	(1,977		)
Purchases of noncontrolling interests in consolidated real estate partnerships	(3,581		)	(311,079		)
Purchases and redemptions of noncontrolling interests in the Aimco Operating Partnership	(8,675		)	(13,187		)
Other financing activities	(415		)	(4,692		)
Net cash used in financing activities	(580,290		)	(16,818		)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(38,242		)	2,446
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	142,541			131,150
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$	104,299		$	133,596

See notes to condensed consolidated financial statements.

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APARTMENT INVESTMENT AND MANAGEMENT COMPANY

AIMCO PROPERTIES, L.P.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

September 30, 2018

(Unaudited)

Note 1 — Organization

Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which is focused on the ownership, management, redevelopment and limited development of quality apartment communities located in several of the largest markets in the United States.

Aimco, through its wholly-owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in the Aimco Operating Partnership. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership. Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as OP Units. OP Units include common partnership units, which we refer to as common OP Units, as well as partnership preferred units, which we refer to as preferred OP Units. As of September 30, 2018, after eliminations for units held by consolidated subsidiaries, the Aimco Operating Partnership had 166,384,727 common partnership units outstanding. As of September 30, 2018, Aimco owned 157,352,109 of the common partnership units (94.6% of the common partnership units) of the Aimco Operating Partnership and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock.

Except as the context otherwise requires, “we,” “our” and “us” refer to Aimco, the Aimco Operating Partnership and their consolidated subsidiaries, collectively.

As of September 30, 2018, we owned an equity interest in 133 apartment communities with 36,481 apartment homes in our Real Estate portfolio. Our Real Estate portfolio is diversified by both price point and geography and consists primarily of market rate apartment communities in which we own a substantial interest. We consolidated 129 of these apartment communities with 36,339 apartment homes and these communities comprise our reportable segment.

Note 2 — Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted in accordance with such rules and regulations, although management believes the disclosures are adequate to prevent the information presented from being misleading. In the opinion of management, all adjustments (consisting of normal recurring items) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2018, are not necessarily indicative of the results that may be expected for the year ending December 31, 2018.

The balance sheets of Aimco and the Aimco Operating Partnership at December 31, 2017, have been derived from their respective audited financial statements at that date, but do not include all of the information and disclosures required by GAAP for complete financial statements. For further information, refer to the financial statements and notes thereto included in Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K for the year ended December 31, 2017. Except where indicated, the footnotes refer to both Aimco and the Aimco Operating Partnership.

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Principles of Consolidation

Aimco’s accompanying condensed consolidated financial statements include the accounts of Aimco, the Aimco Operating Partnership, and their consolidated subsidiaries. The Aimco Operating Partnership’s condensed consolidated financial statements include the accounts of the Aimco Operating Partnership and its consolidated subsidiaries (see Note 8). All significant intercompany balances and transactions have been eliminated in consolidation.

Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are reflected in Aimco’s accompanying condensed consolidated balance sheets as noncontrolling interests in the Aimco Operating Partnership. Interests in partnerships consolidated by the Aimco Operating Partnership that are held by third parties are reflected in our accompanying condensed consolidated balance sheets as noncontrolling interests in consolidated real estate partnerships.

Temporary Equity and Partners’ Capital

The following table presents a reconciliation of the Aimco Operating Partnership’s preferred OP Units from December 31, 2017 to September 30, 2018. The preferred OP Units may be redeemed at the holders’ option (as further discussed in Note 5), and are therefore presented within temporary equity in Aimco’s condensed consolidated balance sheets and within temporary capital in the Aimco Operating Partnership’s condensed consolidated balance sheets (in thousands).

Balance, December 31, 2017	$	101,537
Distributions to holders of preferred OP Units	(5,805		)
Redemption of preferred OP Units and other	(217		)
Net income attributable to preferred OP Units	5,805
Balance, September 30, 2018	$	101,320

Aimco Equity (including Noncontrolling Interests)

The following table presents a reconciliation of Aimco’s consolidated permanent equity accounts from December 31, 2017 to September 30, 2018 (in thousands):

	Aimco Equity			Noncontrolling interests in consolidated real estate partnerships			Common noncontrolling interests in Aimco Operating Partnership			Total Equity
Balance, December 31, 2017	$	1,663,144		$	(1,716	)	$	(5,675	)	$	1,655,753
Issuance of common OP Units	—			—			50,151			50,151
Dividends on Preferred Stock	(6,445		)	—			—			(6,445		)
Dividends and distributions on Common Stock and common OP Units	(179,351		)	(7,934		)	(9,402		)	(196,687		)
Redemptions of common OP Units	—			—			(8,458		)	(8,458		)
Amortization of stock-based compensation cost	6,285			—			1,236			7,521
Effect of changes in ownership for consolidated entities	(18,137		)	—			8,036			(10,101		)
Change in accumulated other comprehensive loss	1,247			—			72			1,319
Other	119			—			—			119
Net income	658,820			8,045			34,093			700,958
Balance, September 30, 2018	$	2,125,682		$	(1,605	)	$	70,053		$	2,194,130

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Partners’ Capital attributable to the Aimco Operating Partnership

The following table presents a reconciliation of the consolidated partners’ capital balances in permanent capital that are attributable to the Aimco Operating Partnership from December 31, 2017 to September 30, 2018 (in thousands):

	Partners’ capital  attributable to the Aimco Operating Partnership
Balance, December 31, 2017	$	1,657,469
Issuance of common OP Units	50,151
Distributions to preferred units held by Aimco	(6,445		)
Distributions to common units held by Aimco	(179,351		)
Distributions to common units held by Limited Partners	(9,402		)
Redemption of common OP Units	(8,458		)
Amortization of Aimco stock-based compensation cost	7,521
Effect of changes in ownership for consolidated entities	(10,101		)
Change in accumulated other comprehensive loss	1,319
Other	119
Net income	692,913
Balance, September 30, 2018	$	2,195,735

A separate reconciliation of noncontrolling interests in consolidated real estate partnerships and total partners’ capital for the Aimco Operating Partnership is not presented as these amounts are identical to the corresponding noncontrolling interests in consolidated real estate partnerships and total equity for Aimco, which are presented above.

Use of Estimates

The preparation of our condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts included in the financial statements and accompanying notes thereto. Actual results could differ from those estimates.

Reclassifications

Certain items included in the year-to-date 2018 and 2017 financial statements have been reclassified to conform to the current presentation.

Income Taxes

As discussed in Note 9 to the consolidated financial statements in Item 8 of our Form 10-K for the year ended December 31, 2017, we have not completed our accounting for the tax effects of the enactment of the Tax Cuts and Jobs Act in late December 2017. Due to the sale of our Asset Management business, discussed further in Note 3, during the nine months ended September 30, 2018, we reversed the remaining valuation allowance recognized as of December 31, 2017, against our deferred tax benefits that we now expect to utilize.

Accounting Pronouncements Adopted in the Current Year

Effective January 1, 2018, we adopted a new standard issued by the Financial Accounting Standards Board, or FASB, that affects accounting for revenue. Under this new standard, revenue is generally recognized when an entity has transferred control of goods or services to a customer for an amount reflecting the consideration to which the entity expects to be entitled for such exchange. In evaluating the contracts we enter into in the ordinary course of business, substantially all of our revenue is generated by lease agreements, which will continue to be subject to existing GAAP until 2019, when we will adopt the new lease accounting standard.

The new revenue standard also introduced new guidance for accounting for other income, including how we measure gains or losses on the sale of real estate. We adopted the new standard using the modified retrospective transition method effective January 1, 2018, with no effect on our results of operations or financial position.

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Effective January 1, 2018, we also adopted new standards issued by the FASB that affect the presentation and disclosure of the statements of cash flows. We are now required to present combined inflows and outflows of cash, cash equivalents, and restricted cash in the consolidated statement of cash flows. Previously our consolidated statements of cash flows presented transfers between restricted and unrestricted cash accounts as operating, financing, and investing cash activities depending upon the required or intended purpose for the restricted funds. The new guidance also requires debt prepayment and other extinguishment related payments to be classified as financing activities. We previously classified such payments as operating activities. We have revised our condensed consolidated statements of cash flows for the nine months ended September 30, 2017 to conform to this presentation, and the effect of the revisions to net cash flows from operating, investing, and financing activities as previously reported for the nine months ended September 30, 2017 are summarized in the following table (in thousands):

	As Previously Reported			Adjustments			As Revised
Net cash provided by operating activities	$	285,025		$	10,124		$	295,149
Net cash used in investing activities	(274,139		)	(1,746		)	(275,885		)
Net cash used in financing activities	(16,449		)	(369		)	(16,818		)

Recent Accounting Pronouncements

In 2018, the Securities Exchange Commission, or SEC, amended its rules to eliminate, modify, or integrate into other SEC requirements certain disclosure rules. The amendments are intended to simplify compliance without significantly changing the total mix of information provided to investors and are generally effective on November 5, 2018. The amendments remove the SEC rule that requires REITs to present gain or loss on the sale of real estate, net of income tax, in the statement of operations. Consistent with the SEC’s historical requirements, we present gain or loss on dispositions of real estate below continuing operations and net of tax. Accordingly we will recast our consolidated statements of operations to present gain or loss on dispositions of real estate as a component of income before income taxes beginning in our financial statements for the year ending December 31, 2018. Additionally, SEC rules currently require changes in equity subsequent to the prior year-end as either a separate financial statement or in the notes to interim financial statements. We present changes in equity within a footnote to our interim condensed consolidated financial statements in accordance with the SEC rule. The amendments create a requirement to report changes in equity and dividends per share in interim periods as a separate financial statement or within a footnote on a comparative basis for both quarter-to-date and year-to-date periods presented. This disclosure is required for interim financial statements of quarters beginning after the effective date; therefore, we will present comparative interim statements of stockholders equity beginning in our condensed consolidated financial statements for the three months ending March 31, 2019.

In 2018, the FASB amended the new standard on lease accounting, which is effective for us on January 1, 2019. The amendment introduced an optional transition method, which allows the recognition of a cumulative-effect adjustment in the period of adoption and for prior reporting periods to remain as originally presented. Additionally, the amendment introduced a practical expedient for lessors to account for lease and nonlease components as a single component if the timing and pattern of transfer of components are the same, and the lease component would be classified as an operating lease if accounted for separately. We have substantially completed our evaluation of the amendment and expect to elect both the transition option and lessor practical expedient concurrent with our adoption of the standard. We do not anticipate significant changes in the timing of income from our leases with residents. However, in circumstances where we are a lessee, primarily a few ground leases and leases for corporate office space, we will be required to recognize right of use assets and related lease liabilities on our consolidated balance sheets. We are in the process of determining the amount of the right of use assets and related lease liabilities that will be recognized upon adoption.

Note 3 — Significant Transactions, Acquisitions and Dispositions of Apartment Communities

Acquisition of Apartment Communities

During the nine months ended September 30, 2018, we acquired for $160.0 million Bent Tree Apartments, a 748-apartment home community in Fairfax County, Virginia. The purchase price, plus $1.0 million of capitalized transaction costs, was allocated as follows: $47.0 million to land; $113.0 million to buildings and improvements; and $1.0 million to other items.

During the nine months ended September 30, 2018, we acquired four apartment communities in the Philadelphia area, including 665 apartment homes and 153,000 square feet of office and retail space. The gross purchase price consisted of $208.9 million of assumed property-level debt and the issuance of 1.2 million OP Units. In accordance with GAAP, the OP Units were valued at $41.08 per unit, the closing price of Aimco’s common share on May 1, 2018. Total consideration, plus $6.4 million of capitalized transaction costs, was allocated as follows: $14.1 million to land; $289.7 million to buildings and improvements; $8.3 million to intangible assets; and $12.3 millionto intangible liabilities. In connection with the foregoing, we have also contracted to acquire

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an additional apartment community in the Philadelphia area, which is expected to be purchased upon completion of the construction in the first half of 2019.

Dispositions of Apartment Communities and Assets Held for Sale

During the nine months ended September 30, 2018, we sold four apartment communities with 1,334 apartment homes for a gain on disposition of $173.2 million, net of income tax, and gross proceeds of $242.3 million resulting in $230.1 million in net proceeds to us. Two of these communities are located in southern Virginia, one in suburban Maryland, and one in north Philadelphia.

During the nine months ended September 30, 2018, we sold our interests in the entities owning the La Jolla Cove property in settlement of legal actions filed in 2014 by a group of disappointed buyers who had hoped to acquire the property. We provided seller financing with a stated value of $48.6 million and received net cash proceeds of approximately $5.0 million in the sale.

During the nine months ended September 30, 2018, we sold for $590.0 million our Asset Management business and our four affordable apartment communities located in the Hunters Point area of San Francisco. The sale resulted in a gain of $448.2 million, net of $54.1 million of taxes, and net cash proceeds of $512.2 million after payment of transaction costs and repayment of property-level debt encumbering the Hunters Point apartment communities.

In addition to the apartment communities we sold during the periods presented, from time to time we may be marketing for sale certain apartment communities that are inconsistent with our long-term investment strategy. At the end of each reporting period, we evaluate whether such communities meet the criteria to be classified as held for sale. As of September 30, 2018, no apartment communities were classified as held for sale.

Note 4 — Commitments and Contingencies

Commitments

In connection with our redevelopment, development and capital improvement activities, we have entered into various construction-related contracts and we have made commitments to complete redevelopment and development of certain apartment communities, pursuant to financing or other arrangements. As of September 30, 2018, our commitments related to these capital activities totaled approximately $130.6 million, most of which we expect to incur during the next 12 months.

We enter into certain commitments for future purchases of goods and services in connection with the operations of our apartment communities. Those commitments generally have terms of one year or less and reflect expenditure levels comparable to our historical expenditures.

Tax Credit Arrangements

For various partnerships served by our Asset Management business prior to its sale, we were required to manage the partnerships and related apartment communities in compliance with various laws, regulations and contractual provisions that apply to historic and low-income housing tax credit syndication arrangements. In some instances, noncompliance with applicable requirements could result in projected tax benefits not being realized by the limited partners in these partnerships and would require a refund or reduction of investor capital contributions for actions taken during our ownership. In connection with the July 25, 2018, sale of our Asset Management business, the performance obligation related to continuing compliance was assumed by the purchaser.

Income Taxes

In 2014, the Internal Revenue Service initiated an audit of the Aimco Operating Partnership’s 2011 and 2012 tax years. We do not believe the audit will have any material effect on our unrecognized tax benefits, financial condition or results of operations.

Legal Matters

In addition to the matters described below, we are a party to various legal actions and administrative proceedings arising in the ordinary course of business, some of which are covered by our general liability insurance program, and none of which we expect to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

Environmental

Various federal, state and local laws subject apartment community owners or operators to liability for management, and the costs of removal or remediation, of certain potentially hazardous materials that may be present in the land or buildings of an apartment community. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the presence of such materials. The presence of, or the failure to manage or remediate properly, these materials may adversely affect occupancy at such apartment communities as well as the ability to sell or finance such apartment communities.

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In addition, governmental agencies may bring claims for costs associated with investigation and remediation actions. Moreover, private plaintiffs may potentially make claims for investigation and remediation costs they incur or for personal injury, disease, disability or other infirmities related to the alleged presence of hazardous materials. In addition to potential environmental liabilities or costs associated with our current apartment communities, we may also be responsible for such liabilities or costs associated with communities we acquire or manage in the future, or apartment communities we no longer own or operate.

We are engaged in discussions with the Environmental Protection Agency, or EPA, and the Indiana Department of Environmental Management, or IDEM, regarding contaminated groundwater in a residential area in the vicinity of an Indiana apartment community that has not been owned by us since 2008. The contamination allegedly derives from a dry cleaner that operated on our former property, prior to our ownership. We have undertaken a voluntary remediation of the dry cleaner contamination under IDEM’s oversight, and in previous years accrued our share of the then-estimated cleanup and abatement costs. In 2016, EPA listed our former community and a number of residential communities in the vicinity on the National Priorities List, or NPL (i.e. as a Superfund site). In May 2018, we prevailed on our federal judicial appeal vacating the Superfund listing. We continue to work with EPA and IDEM to identify options for clean-up of the site. Although the outcome of these processes are uncertain, we do not expect their resolution to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

We also have been contacted by regulators and the current owner of a property in Lake Tahoe, California, regarding environmental issues allegedly stemming from the historic operation of a dry cleaner. An entity owned by us was the former general partner of a now-dissolved partnership that previously owned a site that was used for dry cleaning. That entity and the current property owner have been remediating the dry cleaner site since 2009, under the oversight of the Lahontan Regional Water Quality Control Board, or Lahontan. In May 2017, Lahontan issued a final cleanup and abatement order that names four potentially-responsible parties, acknowledges that there may be additional responsible parties, and requires the named parties to perform additional groundwater investigation and corrective actions with respect to onsite and offsite contamination. We are appealing the final order while simultaneously complying with it. Although the outcome of this process is uncertain, we do not expect its resolution to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

We have determined that our legal obligations to remove or remediate certain potentially hazardous materials may be conditional asset retirement obligations, as defined in GAAP. Except in limited circumstances where the asset retirement activities are expected to be performed in connection with a planned construction project or apartment community casualty, we believe that the fair value of our asset retirement obligations cannot be reasonably estimated due to significant uncertainties in the timing and manner of settlement of those obligations. Asset retirement obligations that are reasonably estimable as of September 30, 2018, are immaterial to our consolidated financial condition, results of operations and cash flows.

Note 5 — Earnings per Share and Unit

Aimco and the Aimco Operating Partnership calculate basic earnings per common share and basic earnings per common unit based on the weighted average number of shares of Common Stock and common partnership units and participating securities outstanding, and calculate diluted earnings per share and diluted earnings per unit taking into consideration dilutive common stock and common partnership unit equivalents and dilutive convertible securities outstanding during the period.

Our common stock and common partnership unit equivalents include options to purchase shares of Common Stock, which, if exercised, would result in Aimco’s issuance of additional shares and the Aimco Operating Partnership’s issuance to Aimco of additional common partnership units equal to the number of shares purchased under the options. These equivalents also include unvested total stockholder return, or TSR, restricted stock awards that do not meet the definition of participating securities, which would result in an increase in the number of common shares and common partnership units outstanding equal to the number of shares that vest. The dilutive effect of these securities was 0.2 million shares or units for the three and nine months ended September 30, 2018. The dilutive effect of these securities was 0.5 million shares or units for the three and nine months ended September 30, 2017. Securities with dilutive effect are included in the denominator for calculating diluted earnings per share and unit during these periods. There were 0.2 million potential shares and 0.2 million potential units not dilutive and excluded from the denominator for calculating diluted earnings per share and per unit, respectively, for both the three and nine months ended September 30, 2018 and 2017.

Our time-based restricted stock awards receive dividends similar to shares of Common Stock and common partnership units prior to vesting and our TSR long-term incentive partnership units receive a percentage of the distributions paid to common partnership units prior to vesting. These dividends and distributions are not forfeited if the awards fail to vest. Therefore, the unvested shares and units related to these awards are participating securities. The effect of participating securities is included in basic and diluted earnings per share and unit computations using the two-class method of allocating distributed and undistributed earnings when the two-class method is more dilutive than the treasury method. There were 0.3 million and 0.2 million unvested participating securities as of September 30, 2018 and 2017, respectively.

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The Aimco Operating Partnership has various classes of preferred OP Units, which may be redeemed at the holders’ option. The Aimco Operating Partnership may redeem these units for cash, or at its option, shares of Common Stock. As of September 30, 2018, these preferred OP Units were potentially redeemable for approximately 2.3 million shares of Common Stock (based on the period end market price), or cash. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the preferred OP Units, subject to limited exceptions. Accordingly, we have excluded these securities from earnings per share and unit computations and we expect to exclude them in future periods.

Note 6 — Fair Value Measurements

Recurring Fair Value Measurements

We measure at fair value on a recurring basis our investments in the securitization trust that holds certain of our property debt, which we classify as available for sale, or AFS, debt securities, which are classified within Level 2 of the GAAP fair value hierarchy.

Our investments in debt securities classified as AFS are presented within other assets in the accompanying condensed consolidated balance sheets. We hold several positions in the securitization trust that pay interest currently and we also hold the first loss position in the securitization trust, which accrues interest over the term of the investment. We are accreting the discount to the $100.9 million face value of the investments into interest income using the effective interest method over the remaining term of the investments, which, as of September 30, 2018, was approximately 2.7 years. Our amortized cost basis for these investments, which represents the original cost adjusted for interest accretion less interest payments received, was $82.1 million and $77.7 million at September 30, 2018 and December 31, 2017, respectively. We estimated the fair value of these investments to be $87.0 million and $82.8 million at September 30, 2018 and December 31, 2017, respectively.

We estimate the fair value of these investments using an income and market approach with primarily observable inputs, including yields and other information regarding similar types of investments, and adjusted for certain unobservable inputs specific to these investments. The fair value of the positions that pay interest currently typically moves in an inverse relationship with movements in interest rates. The fair value of the first loss position is primarily correlated to collateral quality and demand for similar subordinate commercial mortgage-backed securities.

Prior to the July 2018 sale of our Asset Management business, we consolidated certain partnerships served by our Asset Management business. These partnerships entered into interest rate swap agreements to limit exposure to interest rate risk on the partnerships’ debt by effectively converting the interest from a variable rate to a fixed rate. We estimated the fair value of interest rate swaps as of September 30, 2017, using an income approach with primarily observable inputs, including information regarding the hedged variable cash flows and forward yield curves relating to the variable interest rates on which the hedged cash flows are based. The fair value of these interest rate swaps was classified within Level 2 of the GAAP fair value hierarchy.

The following table sets forth a summary of the changes in fair value of these interest rate swaps (in thousands):

	Nine Months Ended September 30,
	2018			2017
Beginning balance	$	(1,795	)	$	(3,175	)
Realized losses included in interest expense	404			73
Realized losses on derecognition of interest rate swaps	1,115			273
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	276			1,076
Unrealized losses included in equity and partners’ capital	—			(280		)
Ending balance	$	—		$	(2,033	)

For the nine months ended September 30, 2018, realized losses on derecognition of interest rate swaps included in earnings represents previously unrealized losses related to interest rate swaps to which certain partnerships served by our Asset Management business were parties. Upon sale of our Asset Management business, the accumulated other comprehensive income related to the swaps was realized as a component of the gain on disposition. Please refer to Note 3 for further discussion of this transaction.

For the nine months ended September 30, 2017, realized losses on derecognition of interest rate swaps included in earnings represents previously unrealized losses related to an interest rate swap to which the partnership owning the final Napico property was a party, as described in Note 11 to our consolidated financial statements included in Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K.

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Fair Value Disclosures

We believe that the carrying values of the consolidated amounts of cash and cash equivalents, receivables and payables approximate their fair values at September 30, 2018, and December 31, 2017, due to their relatively short-term nature and high probability of realization. The carrying value of the total indebtedness associated with our Real Estate portfolio approximated its estimated fair value at September 30, 2018 and December 31, 2017. We estimate the fair value of our consolidated debt using an income and market approach, including comparison of the contractual terms to observable and unobservable inputs such as market interest rate risk spreads, contractual interest rates, remaining periods to maturity, collateral quality and loan to value ratios on similarly encumbered apartment communities within our portfolio. We classify the fair value of debt within Level 3 of the GAAP valuation hierarchy based on the significance of certain of the unobservable inputs used to estimate its fair value.

Note 7 — Business Segments

Our chief executive officer, who is our chief operating decision maker, uses proportionate property net operating income to assess the operating performance of our apartment communities. Proportionate property net operating income is defined as our share of rental and other property revenue less our share of property operating expenses, including real estate taxes, for consolidated apartment communities we own and manage. Beginning in 2018, we exclude from rental and other property revenues the amount of utilities cost reimbursed by residents and reflect such amount as a reduction of the related utility expense within property operating expenses in our evaluation of segment results. In our condensed consolidated statements of operations, utility reimbursements are included in rental and other property revenues, in accordance with GAAP. The tables below have been revised to conform to this presentation.

Apartment communities are classified as either part of our Real Estate portfolio or, prior to the sale in July 2018, those owned through partnerships served by our Asset Management business. As of September 30, 2018, for segment performance evaluation, our Real Estate segment included 129 consolidated apartment communities with 36,339 apartment homes and excluded four apartment communities with 142 apartment homes that we neither manage nor consolidate.

Prior to the July 2018 sale of our Asset Management business, we consolidated certain partnerships in which we held nominal ownership positions. These partnerships own low-income housing tax credit apartment communities. Neither the results of operations nor the assets of these partnerships and apartment communities were quantitatively material; therefore, we have one reportable segment, Real Estate.

The following tables present the revenues, net operating income and income before gain on dispositions of our Real Estate segment on a proportionate basis and excluding amounts related to apartment communities sold as of September 30, 2018 for the three and nine months ended September 30, 2018 and 2017 (in thousands):

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Three months ended September 30, 2018:
Rental and other property revenues attributable to Real Estate	$	222,856	$	8,926	$	2,266		$	234,048
Rental and other property revenues of partnerships served by Asset Management business	—		—		5,022			5,022
Tax credit and transaction revenues	—		—		3,411			3,411
Total revenues	222,856		8,926		10,699			242,481
Property operating expenses attributable to Real Estate	62,863		8,405		6,986			78,254
Property operating expenses of partnerships served by Asset Management business	—		—		2,608			2,608
Other operating expenses not allocated to reportable segment (3)	—		—		114,665			114,665
Total operating expenses	62,863		8,405		124,259			195,527
Operating income	159,993		521		(113,560		)	46,954
Other items included in income before gain on dispositions (4)	—		—		(15,122		)	(15,122		)
Income before gain on dispositions	$	159,993	$	521	$	(128,682	)	$	31,832

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	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Three months ended September 30, 2017:
Rental and other property revenues attributable to Real Estate	$	203,935	$	8,155	$	21,618		$	233,708
Rental and other property revenues of partnerships served by Asset Management business	—		—		18,232			18,232
Tax credit and transaction revenues	—		—		2,695			2,695
Total revenues	203,935		8,155		42,545			254,635
Property operating expenses attributable to Real Estate	57,592		7,609		16,043			81,244
Property operating expenses of partnerships served by Asset Management business	—		—		8,872			8,872
Other operating expenses not allocated to reportable segment (3)	—		—		105,314			105,314
Total operating expenses	57,592		7,609		130,229			195,430
Operating income	146,343		546		(87,684		)	59,205
Other items included in income before gain on dispositions (4)	—		—		(36,828		)	(36,828		)
Income before gain on dispositions	$	146,343	$	546	$	(124,512	)	$	22,377

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Nine months ended September 30, 2018:
Rental and other property revenues attributable to Real Estate	$	643,656	$	25,903	$	21,012		$	690,571
Rental and other property revenues of partnerships served by Asset Management business	—		—		42,830			42,830
Tax credit and transaction revenues	—		—		6,987			6,987
Total revenues	643,656		25,903		70,829			740,388
Property operating expenses attributable to Real Estate	183,119		24,337		25,116			232,572
Property operating expenses of partnerships served by Asset Management business	—		—		20,865			20,865
Other operating expenses not allocated to reportable segment (3)	—		—		337,259			337,259
Total operating expenses	183,119		24,337		383,240			590,696
Operating income	460,537		1,566		(312,411		)	149,692
Other items included in income before gain on dispositions (4)	—		—		(65,560		)	(65,560		)
Income before gain on dispositions	$	460,537	$	1,566	$	(377,971	)	$	84,132

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	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Nine months ended September 30, 2017:
Rental and other property revenues attributable to Real Estate	$	589,349	$	35,542	$	61,748		$	686,639
Rental and other property revenues of partnerships served by Asset Management business	—		—		55,327			55,327
Tax credit and transaction revenues	—		—		8,242			8,242
Total revenues	589,349		35,542		125,317			750,208
Property operating expenses attributable to Real Estate	169,311		25,505		45,138			239,954
Property operating expenses of partnerships served by Asset Management business	—		—		26,458			26,458
Other operating expenses not allocated to reportable segment (3)	—		—		307,096			307,096
Total operating expenses	169,311		25,505		378,692			573,508
Operating income	420,038		10,037		(253,375		)	176,700
Other items included in income before gain on dispositions (4)	—		—		(116,691		)	(116,691		)
Income before gain on dispositions	$	420,038	$	10,037	$	(370,066	)	$	60,009

(1) Represents adjustments for the noncontrolling interests in consolidated real estate partnerships’ share of the results of consolidated apartment communities in our Real Estate segment, which are included in the related consolidated amounts, but excluded from proportionate property net operating income for our segment evaluation. Also includes the reclassification of utility reimbursements from revenues to property operating expenses for the purpose of evaluating segment results. Utility reimbursements are included in rental and other property revenues in our condensed consolidated statements of operations prepared in accordance with GAAP.

(2) Includes the operating results of apartment communities sold during the periods shown or held for sale at the end of the period, if any, and the operating results of apartment communities owned by consolidated partnerships served by our Asset Management business prior to its sale in July 2018. Corporate and Amounts Not Allocated to Reportable Segment also includes property management expenses and casualty gains and losses, which are included in consolidated property operating expenses and are not part of our segment performance measure.

(3) Other operating expenses not allocated to reportable segment consists of depreciation and amortization, general and administrative expenses and other operating expenses, which are not included in our measure of segment performance.

(4) Other items included in income before gain on dispositions primarily consists of interest and income tax benefit.

The assets of our reportable segment and the consolidated assets not allocated to our segment are as follows (in thousands):

	September 30, 2018		December 31, 2017
Real Estate	$	5,861,647	$	5,391,816
Corporate and other assets (1)	323,374		687,224
Total consolidated assets	$	6,185,021	$	6,079,040

(1) Includes the assets not allocated to our reportable segment, primarily corporate assets, and as of December 31, 2017, assets of apartment communities and the Asset Management business, which were sold as of September 30, 2018.

For the nine months ended September 30, 2018 and 2017, capital additions related to our Real Estate segment totaled $241.6 million and $243.3 million, respectively.

Note 8 — Variable Interest Entities

Generally, a variable interest entity, or VIE, is a legal entity in which the equity investors do not have the characteristics of a controlling financial interest or the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. A limited partnership is considered a VIE when the majority of the limited partners unrelated to the general partner possess neither the right to remove the general partner without cause, nor certain rights to participate in the decisions that most significantly affect the financial results of the partnership. In determining whether we are the primary

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beneficiary of a VIE, we consider qualitative and quantitative factors, including, but not limited to: which activities most significantly impact the VIE’s economic performance and which party controls such activities; the amount and characteristics of our investment; the obligation or likelihood for us or other investors to provide financial support; and the similarity with and significance to our business activities and the business activities of the other investors. Significant judgments related to these determinations include estimates about the current and future fair values and performance of real estate held by these VIEs and general market conditions.

Aimco consolidates the Aimco Operating Partnership, which is a VIE for which Aimco is the primary beneficiary. Aimco, through the Aimco Operating Partnership, consolidates all VIEs for which the Aimco Operating Partnership is the primary beneficiary.

All of the VIEs we consolidate own interests in one or more apartment communities. VIEs that own apartment communities we classify as part of our Real Estate segment are typically structured to generate a return for their partners through the operation and ultimate sale of the communities. We are the primary beneficiary in the limited partnerships in which we are the sole decision maker and have a substantial economic interest. The table below summarizes information regarding VIEs consolidated by the Aimco Operating Partnership:

As described in Note 3, we sold our Asset Management business in July 2018, including the nominal ownership interest we held in partnerships served by this business.

	September 30, 2018	December 31, 2017
Real Estate portfolio:
VIEs with interests in apartment communities	9	14
Apartment communities owned by VIEs	9	14
Apartment homes in communities owned by VIEs	3,592	4,321
Consolidated partnerships served by Asset Management business:
VIEs with interests in apartment communities	—	49
Apartment communities owned by VIEs	—	37
Apartment homes in communities owned by VIEs	—	5,893

Assets of the Aimco Operating Partnership’s consolidated VIEs must first be used to settle the liabilities of such consolidated VIEs. These consolidated VIEs’ creditors do not have recourse to the general credit of the Aimco Operating Partnership. Assets and liabilities of consolidated VIEs are summarized in the table below (in thousands):

	September 30, 2018		December 31, 2017
Real Estate portfolio:
Assets
Net real estate	$	481,390	$	529,898
Cash and cash equivalents	13,193		16,111
Restricted cash	7,295		4,798
Liabilities
Non-recourse property debt secured by Real Estate communities, net	339,278		412,205
Accrued liabilities and other	17,096		10,623
Consolidated partnerships served by Asset Management business:
Assets
Real estate, net	—		215,580
Cash and cash equivalents	—		15,931
Restricted cash	—		30,107
Liabilities
Non-recourse property debt	—		220,356
Accrued liabilities and other	—		20,241

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ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements in certain circumstances. Certain information included in this Quarterly Report contains or may contain information that is forward-looking, within the meaning of the federal securities laws, including, without limitation, statements regarding: our ability to maintain current or meet projected occupancy, rental rate and property operating results; the effect of acquisitions, dispositions, redevelopments and developments; our ability to meet budgeted costs and timelines, and achieve budgeted rental rates related to our redevelopment and development investments; expectations regarding sales of our apartment communities and the use of proceeds thereof; and our ability to comply with debt covenants, including financial coverage ratios.

Actual results may differ materially from those described in these forward-looking statements and, in addition, will be affected by a variety of risks and factors, some of which are beyond our control, including, without limitation:

• Real estate and operating risks, including fluctuations in real estate values and the general economic climate in the markets in which we operate and competition for residents in such markets; national and local economic conditions, including the pace of job growth and the level of unemployment; the amount, location and quality of competitive new housing supply; the timing of acquisitions, dispositions, redevelopments and developments; and changes in operating costs, including energy costs;

• Financing risks, including the availability and cost of capital markets’ financing; the risk that our cash flows from operations may be insufficient to meet required payments of principal and interest; and the risk that our earnings may not be sufficient to maintain compliance with debt covenants;

• Insurance risks, including the cost of insurance, natural disasters and severe weather such as hurricanes; and

• Legal and regulatory risks, including costs associated with prosecuting or defending claims and any adverse outcomes; the terms of governmental regulations that affect us and interpretations of those regulations; and possible environmental liabilities, including costs, fines or penalties that may be incurred due to necessary remediation of contamination of apartment communities presently or previously owned by us.

In addition, our current and continuing qualification as a real estate investment trust involves the application of highly technical and complex provisions of the Internal Revenue Code and depends on our ability to meet the various requirements imposed by the Internal Revenue Code, through actual operating results, distribution levels and diversity of stock ownership.

Readers should carefully review our financial statements and the notes thereto, as well as the section entitled “Risk Factors” described in Item 1A of Apartment Investment and Management Company’s and AIMCO Properties, L.P.’s combined Annual Report on Form 10-K for the year ended December 31, 2017, and the other documents we file from time to time with the Securities and Exchange Commission.

As used herein and except as the context otherwise requires, “we,” “our” and “us” refer to Apartment Investment and Management Company (which we refer to as Aimco), AIMCO Properties, L.P. (which we refer to as the Aimco Operating Partnership) and their consolidated entities, collectively.

Certain financial and operating measures found herein and used by management are not defined under accounting principles generally accepted in the United States, or GAAP. These measures are defined and reconciled to the most comparable GAAP measures under the Non-GAAP Measures heading and include: Funds From Operations, Pro forma Funds From Operations, Adjusted Funds From Operations, Free Cash Flow, Economic Income, and the measures used to compute our leverage ratios.

Executive Overview

We are focused on the ownership, management, redevelopment and limited development of quality apartment communities located in several of the largest markets in the United States.

Our principal financial objective is to provide predictable and attractive returns to our equity holders. We measure our long-term total return using Economic Income, defined as Net Asset Value, or NAV, growth plus dividends. NAV is used by many investors because the value of company assets can be readily estimated, even for non-earning assets such as land or properties under development. NAV has the advantage of incorporating the investment decisions of thousands of real estate investors, enhancing comparability among companies that have differences in their accounting, and avoiding disparity that can result from application of GAAP to investment properties and various ownership structures. Some investors focus on multiples of Adjusted Funds From Operations, or AFFO, and Funds From Operations, or FFO. Our disclosure of AFFO, our measure of current return,

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complements our focus on Economic Income. We also use Pro forma Funds From Operations, or Pro forma FFO, as a secondary measure of operational performance. Our business plan to achieve this principal financial objective is to:

• operate our portfolio of desirable apartment homes with a high level of focus on customer selection and customer satisfaction and in an efficient manner that produces predictable and growing Free Cash Flow;

• improve our portfolio of apartment communities, which is diversified both by geography and price point by selling apartment communities with lower projected Free Cash Flow internal rates of return and investing the proceeds from such sales through capital enhancements, redevelopment, limited development, and acquisitions with greater land value, higher expected rent growth, and projected Free Cash Flow internal rates of return in excess of those expected from communities sold;

• use low levels of financial leverage, primarily in the form of non-recourse, long-dated, fixed-rate property debt and perpetual preferred equity, a combination which reduces our refunding and re-pricing risk and which provides a hedge against increases in interest rates; and

• focus intentionally on a collaborative and productive culture based on respect for others and personal responsibility.

Our business is organized aroundfive areas of strategic focus: operational excellence; redevelopment; portfolio management; balance sheet; and team and culture.

The results from the execution of our business plan during the three months ended September 30, 2018, are further described below.

Net income attributable to common stockholders per common share increased by $3.50 during the three months ended September 30, 2018 compared to 2017, primarily due to gains on the sale of apartment communities and the Asset Management business.

AFFO per share increased $0.02 for the three months ended September 30, 2018, as compared to the same period in 2017. Real Estate operations contributed to the increase in AFFO, as follows:

• $0.02 from Same Store property net operating income growth of 2.6%, driven by a 3.1% increase in revenue offset by a 4.5% increase in expenses; and

• $0.06 from leasing activity related to redevelopment and recently acquired communities; offset by

• ($0.06) in AFFO from apartment communities sold in the last twelve months.

For the three months ended September 30, 2018, the sale of the Asset Management business is estimated to have reduced AFFO per share by $0.03.

Operational Excellence

We own and operate a portfolio of market rate apartment communities, diversified by both geography and price point, which we refer to as our Real Estate portfolio. At September 30, 2018, our Real Estate portfolio included 133 apartment communities with 36,481 apartment homes in which we held an average ownership of approximately 99%. This portfolio was divided about two thirds by value to our “Same Store” portfolio of stabilized apartment communities and about one third by value to “Other Real Estate,” which includes recently acquired communities and communities under redevelopment or development whose long-term financial contribution is not yet stabilized.

Our property operations team produced solid results for our Real Estate portfolio for the three months ended September 30, 2018. Highlights include:

• Same Store net operating income growth driven by the factors discussed below;

• Same Store rent increases on renewals and new leases averaged 4.2% and 2.2%, respectively, for a weighted average increase of 3.2%; and

• Average daily occupancy of 96.3%, 30 basis points higher than the same period in 2017.

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Redevelopment

Our second line of business is the redevelopment and limited development of apartment communities, where we expect to create value by repositioning communities within our portfolio. We measure the rate and quality of financial returns by net asset value creation, an important component of Economic Income, our primary measure of long-term financial performance. We also undertake limited ground-up development when warranted by risk-adjusted investment returns, either directly or in connection with the redevelopment of an existing apartment community. When warranted, we rely on the expertise and credit of a third-party developer familiar with the local market to limit our exposure to construction risk.

We invest to earn risk-adjusted returns in excess of those expected from the apartment communities sold in paired trades to fund the redevelopment or development. Of these two activities, we favor redevelopment because it permits adjustment to the scope and timing of spending to align with changing market conditions and customer preferences.

During the three months ended September 30, 2018, we invested $36.7 million in redevelopment and development. In Center City, Philadelphia, we have substantially completed redevelopment of the vacated fourth and final tower of Park Towne Place. During the three months ended September 30, 2018, average daily occupancy at the three completed towers was 89.1%. As of September 30, 2018, the three completed towers were 95% leased and the fourth tower was 71% leased.

We also commenced the next phase of redevelopment at our Flamingo community, located in Miami Beach. This $30 million phase includes extensive redevelopment of retail, leasing, and common areas, including major enhancements to the entryway.

During the three months ended September 30, 2018, we exercised our option to acquire approximately two acres of land adjacent to our 21 Fitzsimons community, located on the University of Colorado Anschutz Medical Campus, and broke ground on the development of a 253-apartment home community. We expect to invest approximately $87.0 million to construct the community, which is expected to be complete in the third quarter of 2020. We anticipate a stabilized net operating income yield in the low 6% range, driven by an 80% net operating income margin due to operational efficiencies derived from owning the adjacent 600 apartment homes, and a Free Cash Flow internal rate of return greater than 10%, resulting in value creation (defined as the amount by which the completed property value exceeds the pre-redevelopment value plus redevelopment spend) of more than 35%.

During the three months ended September 30, 2018, we leased 145 apartment homes at our redevelopment communities. As of September 30, 2018, our exposure to lease-up at active redevelopment and development communities was approximately 341 apartment homes, of which 62 were in the fourth tower of Park Towne Place, 213 were being constructed at Parc Mosaic, and 66 were located in three other communities.

In October 2018, we commenced construction on the development of 58 rental townhomes on approximately four acres of land contiguous to our Elm Creek apartment community in Elmhurst, Illinois. Given the success five years ago of a similar project at the community, we opportunistically purchased an adjacent land parcel in 2017. We expect to achieve a projected stabilized net operating income yield of 7% and a Free Cash Flow internal rate of return of greater than 11% on this $35 million investment. We expect initial occupancy in the first quarter of 2020 and completion of construction in the second quarter of 2020.

Please see below under the Liquidity and Capital Resources – Redevelopment and Development heading for additional information regarding our redevelopment and development investment during the nine months ended September 30, 2018.

Portfolio Management

Our portfolio of apartment communities is diversified across “A,” “B,” and “C+” price points, averaging “B/B+” in quality, and is also diversified across several of the largest markets in the United States. We measure the quality of our apartment communities in our Real Estate portfolio based on average rents of our apartment homes compared to local market average rents as reported by a third-party provider of commercial real estate performance and analysis. Under this rating system, we classify as “A” quality apartment communities those earning rents greater than 125% of the local market average; as “B” quality apartment communities those earning rents between 90% and 125% of the local market average; as “C+” quality apartment communities those earning rents greater than $1,100 per month, but lower than 90% of the local market average; and as “C” quality apartment communities those earning rents less than $1,100 per month and lower than 90% of the local market average. We classify as “B/B+” quality a portfolio that on average earns rents between 100% and 125% of the local market average rents where the portfolio is located. Although some companies and analysts within the multifamily real estate industry use apartment community quality ratings of “A,” “B” and “C,” some of which are tied to the local market rent averages, the metrics used to classify apartment community quality as well as the period for which the local market rents are calculated may vary from company to company. Accordingly, our rating system for measuring apartment community quality is neither broadly nor consistently used in the multifamily real estate industry.

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As part of our portfolio strategy, we seek to sell up to 10% of our portfolio annually and to reinvest the proceeds from such sales in accretive uses such as capital enhancements, redevelopments, occasional development, and selective acquisitions with projected Free Cash Flow internal rates of return higher than expected from the communities being sold. Through this disciplined approach to capital recycling, since 2011, we have sold $4.2 billion in lower-rated apartment communities and we have significantly increased the quality and expected growth rate of our portfolio.

	Three Months Ended
	September 30,
	2018			2017
Average revenue per Aimco apartment home (1)	$	2,131		$	2,005
Portfolio average rents as a percentage of local market average rents	113		%	112		%
Percentage A (3Q 2018 average revenue per Aimco apartment home $2,809)	51		%	53		%
Percentage B (3Q 2018 average revenue per Aimco apartment home $1,854)	33		%	34		%
Percentage C+ (3Q 2018 average revenue per Aimco apartment home $1,702)	16		%	13		%
(1) Represents average monthly rental and other property revenues (excluding resident reimbursement of utility cost) divided by the number of occupied apartment homes as of the end of the current period.

Our average revenue per apartment home was $2,131 for the three months ended September 30, 2018, a 6% increase compared to 2017. This increase is due to year-over-year growth in Same Store revenue as well as our acquisition activities, lease-up of redevelopment and acquisition communities, and the sale of communities with average monthly revenues per apartment home lower than those of the retained portfolio.

As we execute our portfolio strategy, we expect to increase average revenue per Aimco apartment home at a rate greater than market rent growth; increase Free Cash Flow margins; and maintain sufficient geographic and price point diversification to limit volatility and concentration risk.

Apartment Community Acquisitions

We evaluate potential acquisitions with an eye for unique and opportunistic investments and fund acquisitions pursuant to our strict paired trade discipline.

During the nine months ended September 30, 2018, we acquired five apartment communities. We acquired for $307.9 million four apartment communities in the Philadelphia area including 665 apartment homes and 153,000 square feet of office and retail space. We also acquired for $160 million Bent Tree Apartments, a 748-apartment home community in Fairfax County, Virginia.

In April 2018, we agreed to acquire six communities in the Philadelphia area, including the four that have been acquired year-to-date. During the three months ended September 30, 2018, we terminated our agreement to acquire the fifth community, The Victor, in Camden, New Jersey, due to the lack of required approvals from the City of Camden. The purchase of the sixth community is expected upon completion of construction in the first half of 2019. The rate of return expected on our investment in the Philadelphia communities are not materially impacted by the removal of The Victor.

Dispositions

During the three months ended September 30, 2018, we sold for $590 million our Asset Management business and four affordable apartment communities located in the Hunters Point area of San Francisco. After payment of transaction costs and repayment of property-level debt encumbering the Hunters Point apartment communities, net proceeds to us were $512.2 million.

During the three months ended September 30, 2018, we also sold for $170.4 million Chestnut Hill Village, an 821-apartment home community located in north Philadelphia. Net proceeds to us were $165.5 million.

We used the proceeds from the two sales to fund 2018 acquisitions, effectively completing the paired trades. The sale of Chestnut Hill Village rebalanced our capital allocation to Philadelphia from a lower-rated apartment community in north Philadelphia to communities in the more desirable Center City and University City submarkets. The acquisition communities have expected Free Cash Flow internal rates of return approximately 400 basis points higher than those of the disposition communities.

We used excess proceeds from the sales to repay in full our revolving credit facility and term loan, reduce property-level borrowings, and for general corporate purposes.

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Balance Sheet

Our leverage strategy seeks to increase financial returns while using leverage with appropriate caution. We limit risk through balance sheet structure, employing low leverage, primarily non-recourse and long-dated property debt; build financial flexibility by maintaining ample unused and available credit as well as holding properties with substantial value unencumbered by property debt; and use partners’ capital when it enhances financial returns or reduces investment risk.

Our leverage includes our share of long-term, non-recourse, property debt encumbering apartment communities, outstanding borrowings under our revolving credit facility, and outstanding preferred equity.

We target the ratio of Proportionate Debt and Preferred Equity to Adjusted EBITDA to be below 7.0x and we target the ratio of Adjusted EBITDA to Adjusted Interest Expense and Preferred Dividends to be greater than 2.5x. Our leverage ratios for the three months ended September 30, 2018, are presented below:

Proportionate Debt to Adjusted EBITDA (1)	6.5x
Proportionate Debt and Preferred Equity to Adjusted EBITDA (1)	6.9x
Adjusted EBITDA to Adjusted Interest Expense	3.4x
Adjusted EBITDA to Adjusted Interest Expense and Preferred Dividends	3.1x

(1) Adjusted EBITDA has been adjusted on a pro forma basis to reflect our disposition of Chestnut Hill Village, the Asset Management business, and the four Hunters Point communities during the period as if the transactions had been closed on July 1, 2018.

We calculate Adjusted EBITDA and Adjusted Interest Expense used in our leverage ratios based on the most recent three month amounts, annualized. As used in the ratios above, Preferred Equity represents Aimco’s preferred stock and the Aimco Operating Partnership’s preferred OP Units.

We expect our Proportionate Debt to Adjusted EBITDA and Proportionate Debt and Preferred Equity to Adjusted EBITDA ratios to decrease to 6.3x and 6.7x, respectively, before year-end.

As of June 30, 2018, we had $1.6 billion of property-level debt scheduled to mature between 2019 and 2021 and $125 million of 6.875% preferred stock callable in 2019. During the three months ended September 30, 2018, we repaid $120 million of the property-level debt. We intend to redeem the preferred stock in May 2019. We are addressing the majority of these remaining maturities and have rate-locked $620 million of non-recourse, property loans: $500 million of these loans are fixed-rate with a weighted average maturity of nine years and a weighted average interest rate of 4.17%, and $120 million of these loans have five-year terms and interest rates floating at a weighted average of 115 basis points over 30-day LIBOR. In connection with the expected refinancing activity, we expect to incur approximately $14 million of debt extinguishment costs.

In October 2018, we repurchased 1.7 million shares of our common stock for a total of $75 million, at a weighted average price of $43.89 per share, approximately a 20% discount to our March 31, 2018 estimated net asset value per share.

Our liquidity consists of cash balances and available capacity on our revolving line of credit. As of September 30, 2018, we had cash and restricted cash of $104.3 million and had the capacity to borrow $592.9 million under our revolving credit facility, after consideration of $7.1 million of letters of credit backed by the facility. We use our credit facility primarily for working capital and other short-term purposes and to secure letters of credit.

We manage our financial flexibility by maintaining an investment grade rating and holding apartment communities that are unencumbered by property debt. At September 30, 2018, we held unencumbered apartment communities with an estimated fair value of approximately $2.3 billion.

Two credit rating agencies rate our creditworthiness using different methodologies and ratios for assessing our credit, and both have rated our credit and outlook as BBB- (stable), an investment grade rating. Although some of the ratios they use are similar to those we use to measure our leverage, there are differences in our methods of calculation and therefore our leverage ratios disclosed above may not be indicative of the ratios that may be calculated by these agencies.

For additional information regarding our leverage, please see the discussion under the Liquidity and Capital Resources heading.

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Team and Culture

Our team and culture are keys to our success. Our intentional focus on a collaborative and productive culture based on respect for others and personal responsibility is reinforced by a preference for promotion from within. We focus on succession planning and talent development to produce a strong, stable team that is the enduring foundation of our success. In 2018, we were recognized by the Denver Post as a Top Work Place for the sixth consecutive year, an accomplishment shared with only seven other companies in Colorado.

Key Financial Indicators

The key financial indicators we use in managing our business and in evaluating our operating performance are Economic Income, our measure of long-term total return, and Adjusted Funds From Operations, our measure of current return. In addition to these indicators, we evaluate our operating performance and financial condition using: Pro forma FFO; Free Cash Flow; same store property net operating income; proportionate property net operating income; average revenue per effective apartment home; leverage ratios; and net leverage.

Results of Operations

Because our operating results depend primarily on income from our apartment communities, the supply of and demand for apartments influences our operating results. Additionally, the level of expenses required to operate and maintain our apartment communities and the pace and price at which we redevelop, acquire and dispose of our apartment communities affect our operating results.

The following discussion and analysis of the results of our operations and financial condition should be read in conjunction with the accompanying condensed consolidated financial statements included in Item 1.

Three and Nine Months Ended September 30, 2018 compared to September 30, 2017

Net income attributable to Aimco increased by $550.4 million and increased by $607.4 million, respectively, during the three and nine months ended September 30, 2018 as compared to 2017. Net income attributable to the Aimco Operating Partnership increased by $579.7 million and $639.3 million, respectively, during the three and nine months ended September 30, 2018 as compared to 2017. The following discussion describes the primary drivers of the changes in the net income attributable to Aimco and the Aimco Operating Partnership for the three and nine months ended September 30, 2018 compared to 2017.

Property Operations

As described under the preceding Executive Overview heading, our Real Estate portfolio consists of market rate apartment communities in which we hold a substantial equity ownership interest.

We use proportionate property net operating income to assess the operating performance of our Real Estate Portfolio. Proportionate property net operating income reflects our share of rental and other property revenues less direct property operating expenses, including real estate taxes, for consolidated apartment communities we manage. Accordingly, the results of operations of our Real Estate segment discussed below are presented on a proportionate basis and exclude the results of four apartment communities with 142 apartment homes that we neither manage nor consolidate.

Additionally, we evaluate the revenue and expense performance of our segment as adjusted for utility reimbursements. Nearly two-thirds of our utility costs are reimbursed by residents. These reimbursements are included in rental and other property revenues in our condensed consolidated statements of operations prepared in accordance with GAAP, but beginning in 2018, our segment results below reflect utility reimbursements as a reduction of the corresponding expense. We have revised the 2017 amounts to conform to this presentation.

We do not include offsite costs associated with property management or casualty-related amounts in our assessment of segment performance. Accordingly, these items are not allocated to our segment results discussed below.

Refer to Note 7 in the condensed consolidated financial statements in Item 1 for further discussion regarding our reportable segment including a reconciliation of these proportionate amounts to the corresponding amounts in our condensed consolidated statements of operations.

Real Estate Proportionate Property Net Operating Income

We classify apartment communities within our Real Estate segment as Same Store and Other Real Estate. Same Store communities are those that have reached a stabilized level of operations as of the beginning of a two-year comparable period and maintained it throughout the current and comparable prior periods, and are not expected to be sold within 12 months. Other Real

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Estate includes apartment communities that do not meet the Same Store definition, including, but not limited to: redevelopment and development apartment communities, which are those currently under construction that have not achieved a stabilized level of operations and those that have been completed in recent years that have not achieved and maintained stabilized operations for both the current and comparable prior year; acquisition apartment communities, which are those we have acquired since the beginning of a two-year comparable period; and communities that we expect to sell within 12 months but do not yet meet the criteria to be classified as held for sale.

As of September 30, 2018, our Real Estate segment consisted of 95 Same Store apartment communities with 26,367 apartment homes and 34 Other Real Estate communities with 9,972 apartment homes.

From December 31, 2017 to September 30, 2018, on a net basis, our Same Store portfolio increased by three apartment communities and decreased by 19 apartment homes. These changes consisted of:

• the addition of one developed apartment community with 91 apartment homes and one redeveloped apartment community with 104 apartment homes that were classified as Same Store upon maintaining stabilized operations for the entirety of the periods presented;

• the addition of one acquired apartment community with 115 apartment homes that was classified as Same Store because we have now owned it for the entirety of both periods presented;

• the addition of one apartment community with 492 apartments homes that we no longer expect to sell within 12 months; and

• the reduction of one apartment community with 821 apartment homes, which was sold as of September 30, 2018.

As of September 30, 2018, our Other Real Estate communities included:

• 13 apartment communities with 6,293 apartment homes in redevelopment or development;

• 6 apartment communities with 1,876 apartment homes recently acquired; and

• 15 apartment communities with 1,803 apartment homes that do not meet the definition of Same Store because they are either subject to agreements that limit the amount by which we may increase rents or have not reached or maintained a stabilized level of occupancy as of the beginning of a two-year comparable period, often due to a casualty event.

Our Real Estate segment results for the three months ended September 30, 2018 and 2017, as presented below, are based on the apartment community populations as of September 30, 2018.

	Three Months Ended September 30,
(in thousands)	2018		2017		$ Change		% Change
Rental and other property revenues before utility reimbursements:
Same Store communities	$	148,877	$	144,441	$	4,436	3.1	%
Other Real Estate communities	73,979		59,494		14,485		24.3	%
Total	222,856		203,935		18,921		9.3	%
Property operating expenses, net of utility reimbursements:
Same Store communities	39,034		37,352		1,682		4.5	%
Other Real Estate communities	23,829		20,240		3,589		17.7	%
Total	62,863		57,592		5,271		9.2	%
Proportionate property net operating income:
Same Store communities	109,843		107,089		2,754		2.6	%
Other Real Estate communities	50,150		39,254		10,896		27.8	%
Total	$	159,993	$	146,343	$	13,650	9.3	%

For the three months ended September 30, 2018 compared to 2017, our Real Estate segment’s proportionate property net operating income increased$13.7 million, or 9.3%.

Same Store proportionate property net operating income increased by $2.8 million, or 2.6%. This increase was primarily attributable to a $4.4 million, or 3.1%, increase in rental and other property revenues due to higher average revenues of $53 per Aimco apartment home comprised of increases in rental rates and a 30 basis point increase in average daily occupancy. Renewal

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rents, which is the rent paid by an existing resident who renewed a lease compared to the rent paid prior to renewal, were up 4.2% for the three months endedSeptember 30, 2018, and new lease rents, which is the rent paid by a new resident compared to the rent paid by the previous resident of the same apartment home, were up 2.2%, resulting in a weighted average increase of 3.2%. The increase in Same Store rental and other property revenues was partially offset by a $1.7 million, or 4.5%, increase in property operating expenses primarily due to repairs and maintenance costs and increases in real estate taxes. During the three months endedSeptember 30, 2018 compared to 2017, controllable operating expenses, which exclude utility costs, real estate taxes and insurance, increased by $1.1 million, or 5.6%.

The proportionate property net operating income of Other Real Estate communities increased by $10.9 million, or 27.8%, for the three months ended September 30, 2018 compared to 2017 primarily due to:

• an $8.4 million increase in property net operating income due to the 2018 acquisitions of Bent Tree Apartments and the four Philadelphia communities as well as the stabilization of Indigo located in Redwood City, California; and

• a $2.1 million increase in property net operating income due to leasing activities at redevelopment and development communities, partially offset by decreases due to apartment homes taken out of service for redevelopment and development.

	Nine Months Ended September 30,
(in thousands)	2018		2017		$ Change		% Change
Rental and other property revenues before utility reimbursements:
Same Store communities	$	440,681	$	428,028	$	12,653	3.0	%
Other Real Estate communities	202,975		161,321		41,654		25.8	%
Total	643,656		589,349		54,307		9.2	%
Property operating expenses, net of utility reimbursements:
Same Store communities	116,453		112,725		3,728		3.3	%
Other Real Estate communities	66,666		56,586		10,080		17.8	%
Total	183,119		169,311		13,808		8.2	%
Proportionate property net operating income:
Same Store communities	324,228		315,303		8,925		2.8	%
Other Real Estate communities	136,309		104,735		31,574		30.1	%
Total	$	460,537	$	420,038	$	40,499	9.6	%

For the nine months ended September 30, 2018 compared to 2017, our Real Estate segment’s proportionate property net operating income increased$40.5 million, or 9.6%.

Same Store proportionate property net operating income increased by $8.9 million, or 2.8%. This increase was primarily attributable to a $12.7 million, or 3.0%, increase in rental and other property revenues due to higher average revenues of approximately $50 per effective home, comprised primarily of increases in rental rates and a 30 basis point increase in average daily occupancy. Renewal rents, which is the rent paid by an existing resident who renewed a lease compared to the rent paid prior to renewal, were up 4.6% for the nine months ended September 30, 2018, and new lease rents, which is the rent paid by a new resident compared to the rent paid by the previous resident of the same apartment home, were up 1.7%, resulting in a weighted average increase of 3.2%. The increase in Same Store rental and other property revenues was partially offset by a $3.7 million, or 3.3%, increase in property operating expenses, primarily due to increase in real estate taxes and repairs and maintenance costs. During the nine months ended September 30, 2018 compared to 2017, controllable operating expenses, which exclude utility costs, real estate taxes and insurance, increased by $1.9 million, or 3.2%.

The proportionate property net operating income of our Other Real Estate communities increased by $31.6 million, or 30.1% for the nine months ended September 30, 2018 compared to 2017, due to:

• a $16.3 million increase in property net operating income due to the 2018 acquisition of Bent Tree Apartments and the four Philadelphia properties as well as the stabilization of Indigo;

• a $6.0 million increase in property net operating income due to leasing activities at redevelopment and development communities, partially offset by decreases due to apartment homes taken out of service for redevelopment; and

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• higher property net operating income of $8.5 million from other communities, primarily the effect of our increased ownership interest in the Palazzo communities from our June 2017 reacquisition of a 47% limited partner interest in the related joint venture.

Non-Segment Real Estate Operations

Operating income amounts not attributed to our Real Estate segment include offsite costs associated with property management, casualty losses, and the results of apartment communities sold, reported in consolidated amounts, which we do not allocate to our Real Estate segment for purposes of evaluating segment performance (see Note 7 to the condensed consolidated financial statements in Item 1).

For the three months endedSeptember 30, 2018, casualty losses totaled $0.8 million and included several minor claims. For the three months endedSeptember 30, 2017, casualty losses totaled $2.8 million and included several large claims primarily related to hurricane damage.

For the nine months ended September 30, 2018, casualty losses totaled $2.4 million and included several claims primarily related to winter storm damage, partially offset by recovery from insurance carriers for insured losses in excess of policy limits. For the nine months ended September 30, 2017, casualty losses totaled $7.1 million and included several large claims primarily related to damage from Hurricane Irma.

Net operating income decreased for the three and nine months ended September 30, 2018 compared to 2017, by $12.4 million and $25.9 million, respectively, due to apartment communities previously in our Real Estate portfolio that were sold as of September 30, 2018.

Asset Management Results

Prior to the July 2018 sale of our Asset Management business, we provided asset management and other services to certain consolidated partnerships owning apartment communities that qualify for low-income housing tax credits and are structured to provide for the pass-through of tax credits and tax deductions to their partners.

Contribution from Asset Management in our condensed consolidated financial statements included: fees and other amounts paid to us from the net operating income of partnerships served by our Asset Management business, less interest expense incurred on non-recourse property debt obligations of the partnerships; income associated with delivery of tax credits to the third-party investors in the partnerships; and transactional revenue and other income less asset management expenses, which included certain allocated offsite costs related to the operation of this business.

For the three and nine months ended September 30, 2018 compared to 2017, contribution from Asset Management decreased due to the July 2018 sale of our Asset Management business.

Depreciation and Amortization

For the three and nine months ended September 30, 2018 compared to 2017, depreciation and amortization increased$3.9 million, or 4.2%, and $17.6 million, or 6.5%, respectively, primarily due to apartment homes acquired in 2018 and renovated apartment homes placed in service after their completion, partially offset by decreases associated with apartment communities sold.

General and Administrative Expenses

For the three and nine months ended September 30, 2018, compared to 2017, general and administrative expenses increased$2.0 million, or 18.5%, and $5.6 million, or 17.7%, respectively, primarily due to the timing of incentive compensation costs, legal and consulting fees, and travel expenses.

Other Expenses, net

Other expenses, net includes costs associated with our risk management activities, partnership administration expenses and certain non-recurring items.

For the three and nine months ended September 30, 2018 compared to 2017, other expenses increased by $3.5 million and $7.0 million, respectively, primarily due to higher legal costs associated with our ongoing litigation against Airbnb to protect our property right to select our residents and their neighbors and severance costs incurred during the three months ended September 30, 2018, offset by a reduction in other legal costs.

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Interest Income

For the three and nine months ended September 30, 2018 compared to 2017, interest income increased$0.7 million and $1.5 million, respectively, primarily due to interest earned on the seller financing notes received as consideration in the sale of La Jolla Cove.

Interest Expense

For the three and nine months ended September 30, 2018 compared to 2017, interest expense, which includes the amortization of debt issuance costs, decreased by $5.2 million, or 10.2%, and $2.2 million, or 1.5%,respectively. The decreases were primarily due to the repayment of our term loan and borrowings against our credit facility and certain property level debt with proceeds from the sale of our Asset Management business, partially offset by interest on debt assumed with the Philadelphia portfolio acquisition.

Income Tax Benefit

Certain of our operations, including property management and risk management, are conducted through taxable REIT subsidiaries, or TRS entities. Additionally, some of our apartment communities are owned through TRS entities.

Our income tax benefit calculated in accordance with GAAP includes: (a) income taxes associated with the income or loss of our TRS entities, for which the tax consequences have been realized or will be realized in future periods; (b) low income housing tax credits generated prior to the sale of our Asset Management business and four Hunters Point apartment communities that offset REIT taxable income, primarily from retained capital gains; and (c) historic tax credits that offset income tax obligations of our TRS entities. Income taxes related to these items (before gains on dispositions), as well as changes in valuation allowance and the establishment of incremental deferred tax items in conjunction with intercompany asset transfers (if applicable), are included in income tax benefit in our condensed consolidated statements of operations.

For the three and nine months ended September 30, 2018 compared to 2017, income tax benefit increased by $23.1 million and $54.8 million, respectively. Income tax benefit increased during the three months ended primarily due to the release of a previously established valuation allowance as a result of the sale of the Asset Management business. Income tax benefit increased during the nine months ended September 30, 2018, primarily due to a tax benefit recognized in connection with an intercompany transfer of assets related to our Asset Management business and the release of the valuation allowance.

Gain on Dispositions of Real Estate and the Asset Management Business, Inclusive of Related Income Tax

Real Estate

During the three months ended September 30, 2018, we sold for $170 million Chestnut Hill Village, an 821-apartment community located in north Philadelphia for a gain of $122.6 million, net of income tax, and gross proceeds of $170.4 million, resulting in $165.5 million in net proceeds to us. During the nine months ended September 30, 2018, we sold four apartment communities with 1,334 apartment homes for a gain of $173.2 million, net of income tax, and gross proceeds of $242.3 million, resulting in $230.1 million in net proceeds to us.

We did not sell any apartment communities from our Real Estate portfolio during the nine months ended September 30, 2017.

During the three months ended September 30, 2018, we also sold four affordable communities located in the Hunters Point area of San Francisco in connection with our sale of our Asset Management business described below.

Asset Management

During the three months ended September 30, 2018, we sold for $590.0 million our Asset Management business and our four Hunters Point communities for a gain of $448.2 million, net of income tax. After payment of transaction costs and repayment of property-level debt encumbering the Hunters Point apartment communities, net proceeds to us were $512.2 million.

Consolidated partnerships served by our Asset Management business did not sell any apartment communities during the three months ended September 30, 2017. During the nine months ended September 30, 2017, consolidated partnerships sold two apartment communities for gross proceeds of $10.9 million, resulting in a gain on disposition of real estate of $2.6 million and related tax expense of $0.9 million.

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Noncontrolling Interests in Consolidated Real Estate Partnerships

Noncontrolling interests in consolidated real estate partnerships reflects the results of our consolidated real estate partnerships allocated to the owners who are not affiliated with Aimco. The amounts of income or loss of our consolidated real estate partnerships that we allocate to owners not affiliated with Aimco include their share of property management fees, interest on notes and other amounts that we charge to these partnerships.

The amount of net income allocated to noncontrolling interests was driven by two primary factors: the operations of the consolidated apartment communities and gains on the sale of apartment communities with noncontrolling interest holders, as further discussed below.

For the three months ended September 30, 2018 and 2017, we allocated net income of $1.8 million and net loss of $0.2 million, respectively, to noncontrolling interests in consolidated real estate partnerships.

• The allocation to noncontrolling interests resulting from operations of the consolidated apartment communities was $0.1 million of income for the three months ended September 30, 2018, and $0.2 million of loss for the three months ended September 30, 2017.

• Gains on the sale of apartment communities allocated to noncontrolling interests totaled $1.7 million for the three months ended September 30, 2018 and there were no gains to allocate in the three months ended September 30, 2017.

For the nine months ended September 30, 2018 and 2017, we allocated net income of $8.0 million and $1.5 million, respectively, to noncontrolling interests in consolidated real estate partnerships.

• The amount of net income allocated to noncontrolling interests resulting from operations of the consolidated apartment communities was $0.2 million and $1.5 million for the nine months ended September 30, 2018 and 2017, respectively. The decrease was primarily due to the June 2017 reacquisition of our limited partner’s interests in the Palazzo joint venture.

• Gains on the sale of apartment communities allocated to noncontrolling interests totaled $7.8 million for the nine months ended September 30, 2018, and there were no gains to allocate in the nine months ended September 30, 2017.

Noncontrolling Interests in Aimco Operating Partnership

In Aimco’s consolidated financial statements, noncontrolling interests in the Aimco Operating Partnership reflects the results of the Aimco Operating Partnership that are allocated to the OP Unit holders. For the three and nine months ended September 30, 2018 compared to 2017, net income allocated to noncontrolling interests in the Aimco Operating Partnership increased $29.4 million and $31.9 million, respectively. Allocations to noncontrolling interests in the Aimco Operating Partnership fluctuate in proportion to variations in net income, as described above. The allocation of net income to noncontrolling interests in the Aimco Operating Partnership increased due to the issuance of OP Units as partial consideration for the acquisition of the four Philadelphia properties, discussed further in Note 3 to the condensed consolidated financial statements in Item 1.

Critical Accounting Policies and Estimates

We prepare our condensed consolidated financial statements in accordance with GAAP, which requires us to make estimates and assumptions. We believe that the critical accounting policies that involve our more significant judgments and estimates used in the preparation of our condensed consolidated financial statements relate to the impairment of long-lived assets and capitalized costs.

Our critical accounting policies are described in more detail in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, of Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K for the year ended December 31, 2017. There have been no significant changes in our critical accounting policies from those reported in our Form 10-K and we believe that the related judgments and assessments have been consistently applied and produce financial information that fairly depicts the financial condition, results of operations, and cash flows for all periods presented.

Non-GAAP Measures

Various of the key financial indicators we use in managing our business and in evaluating our financial condition and operating performance are non-GAAP measures. Key non-GAAP measures we use are defined and described below, and for those non-GAAP measures used or disclosed within this quarterly report, reconciliations of the non-GAAP measures to the most comparable financial measure computed in accordance with GAAP are provided.

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Economic Income represents stockholder value creation as measured by the per share change in estimated net asset value plus cash dividends. We believe Economic Income is important to investors as it represents a measure of the total return we have earned for our stockholders. We report and reconcile Economic Income annually. Please refer to the section entitled Management’s Discussion and Analysis of Financial Condition and Results of Operations described in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2017, for more information about Economic Income.

Funds From Operations, or FFO, Pro forma FFO and AFFO are non-GAAP financial measures, which are defined and further described below under the Funds From Operations, Pro forma Funds From Operations and Adjusted Funds From Operations heading.

Free Cash Flow, as calculated for our retained portfolio, represents an apartment community’s property net operating income, or NOI, less spending for capital replacements, which represents our estimation of the capital additions made to replace capital assets consumed during our ownership period (further discussed herein under the Funds From Operations, Pro forma Funds From Operations and Adjusted Funds From Operations heading and the Liquidity and Capital Resources heading). Free Cash Flow margin, represents an apartment community’s NOI less $1,200 per apartment home of assumed annual capital replacement spending, as a percentage of the apartment community’s rental and other property revenues. Capital replacement spending represents a measure of the cost of capital asset usage during the period; therefore, we believe that Free Cash Flow is useful to investors as a supplemental measure of apartment community performance because it takes into consideration costs incurred during the period to replace capital assets that have been consumed during our ownership.

Funds From Operations, Pro Forma Funds From Operations and Adjusted Funds From Operations

FFO is a non-GAAP financial measure that we believe, when considered with the financial statements determined in accordance with GAAP, is helpful to investors in understanding our performance because it captures features particular to real estate performance by recognizing that real estate generally appreciates over time or maintains residual value to a much greater extent than do other depreciable assets such as machinery, computers or other personal property. The National Association of Real Estate Investment Trusts, or NAREIT, defines FFO as net income or loss computed in accordance with GAAP, excluding gains from sales of, and impairment losses recognized with respect to, depreciable property, plus depreciation and amortization, and after adjustments for unconsolidated partnerships and joint ventures. Adjustments for unconsolidated partnerships and joint ventures are calculated on the same basis to determine FFO. We calculate FFO attributable to Aimco common stockholders (diluted) by subtracting dividends on preferred stock and amounts allocated from FFO to participating securities.

In addition to FFO, we compute Pro forma FFO and AFFO, which are also non-GAAP financial measures that we believe are helpful to investors in understanding our performance. Pro forma FFO represents FFO attributable to Aimco common stockholders (diluted), excluding preferred equity redemption-related amounts and certain litigation costs. Preferred equity redemption-related amounts (gains or losses) are items that periodically affect our operating results and we exclude these items from our calculation of Pro forma FFO because such amounts are not representative of our operating performance. We are engaged in litigation with Airbnb to protect our property right to select our residents and their neighbors. Due to the unpredictable nature of these cases and associated legal costs, we exclude such costs from Pro forma FFO. In connection with the sale of our Asset Management business, we incurred severance costs during the nine months ended September 30, 2018. We believe these costs incurred are closely related to the sale of the business and exclude such costs from Pro forma FFO. We also excluded from Pro forma FFO the tax benefit due to the valuation allowance release, net of common noncontrolling interests in Aimco Operating Partnership and participating securities. Due to the sale of the Asset Management business, we expect to realize our deferred tax benefits. As a result, we have determined that a valuation allowance is no longer necessary. We excluded the effect of the establishment of the valuation allowance from Pro forma FFO and, as such, have excluded the benefit from its release.

AFFO represents Pro forma FFO reduced by Capital Replacements, which represents our estimation of the actual capital additions made to replace capital assets consumed during our ownership period. When we make capital additions at an apartment community, we evaluate whether the additions extend the useful life of an asset as compared to its condition at the time we purchased the apartment community. We classify as Capital Improvements those capital additions that meet these criteria and we classify as Capital Replacements those that do not. AFFO is a key financial indicator that we use to evaluate our operational performance and measure our current return. AFFO is one of the factors that we use to determine the amounts of our dividend payments.

FFO, Pro forma FFO and AFFO should not be considered alternatives to net income, as determined in accordance with GAAP, as indications of our performance. Although we use these non-GAAP measures for comparability in assessing our performance compared to other REITs, not all REITs compute these same measures, and those who do may not compute them in the same manner. Additionally, our computation of AFFO is subject to our definition of Capital Replacement spending. Accordingly, there can be no assurance that our basis for computing these non-GAAP measures is comparable with that of other REITs.

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For the three and nine months ended September 30, 2018 and 2017, Aimco’s FFO, Pro forma FFO and AFFO are calculated as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Net income attributable to Aimco common stockholders (1)	$	567,029		$	17,430		$	651,371		$	44,764
Adjustments:
Real estate depreciation and amortization, net of noncontrolling partners’ interest	94,166			89,879			279,798			257,409
Gain on dispositions and other, net noncontrolling partners’ interest	(624,521		)	(5,772		)	(671,761		)	(7,952		)
Income tax adjustments related to gain on dispositions and other items (2)	54,448			733			23,813			2,175
Common noncontrolling interests in Aimco Operating Partnership’s share of above adjustments	24,130			(3,814		)	18,963			(11,447		)
Amounts allocable to participating securities	626			(43		)	529			(122		)
FFO attributable to Aimco common stockholders – diluted	$	115,878		$	98,413		$	302,713		$	284,827
Tax benefit due to valuation allowance release, net of common noncontrolling interests in Aimco Operating Partnership and participating securities (3)	(19,349		)	—			(19,349		)	—
Litigation costs, net of common noncontrolling interests in Aimco Operating Partnership and participating securities (4)	2,727			—			4,633			—
Severance costs, net of common noncontrolling interests in Aimco Operating Partnership and participating securities (5)	67			—			1,282			—
Pro forma FFO attributable to Aimco common stockholders – diluted	$	99,323		$	98,413		$	289,279		$	284,827
Capital Replacements, net of common noncontrolling interests in Aimco Operating Partnership and participating securities	(10,768		)	(14,446		)	(32,245		)	(40,752		)
AFFO attributable to Aimco common stockholders – diluted	$	88,555		$	83,967		$	257,034		$	244,075
Weighted average common shares outstanding – diluted (FFO, Pro forma FFO and AFFO) (6)	156,938			156,835			156,836			156,768
Net income attributable to Aimco per common share – diluted	$	3.61		$	0.11		$	4.15		$	0.29
FFO per share – diluted	$	0.74		$	0.63		$	1.93		$	1.82
Pro forma FFO per share – diluted	$	0.63		$	0.63		$	1.84		$	1.82
AFFO per share – diluted	$	0.56		$	0.54		$	1.64		$	1.56

(1) Represents the numerator for calculating Aimco’s earnings per common share in accordance with GAAP.

(2) Income taxes related to gain on dispositions and other items for the three months ended September 30, 2018, includes the reversal of a $33.3 million deferred tax asset related to intercompany transfer of assets, which was realized upon the sale of the Asset Management business. The remaining income tax provision of $21.1 million relates to the tax on the gain on the sale. For the nine months ended September 30, 2018, income taxes related to gain on dispositions and other items includes tax on the gain on the sale of the Asset Management business, as well as tax on the gain on the sale of apartment communities during the nine months ended September 30, 2018.

(3) Due to the sale of the Asset Management business, we expect to realize our deferred tax benefits. As a result, we have determined that a valuation allowance is no longer necessary. We excluded the effect of the establishment of the valuation allowance from Pro forma FFO and as such have excluded the benefit from its release.

(4) We are engaged in litigation with Airbnb to protect our property right to select our residents and their neighbors. Due to the unpredictable nature of these cases and associated legal costs, we exclude such costs from Pro forma FFO and AFFO.

(5) In connection with the sale of our Asset Management business, we incurred severance costs of $0.1 million and $1.3 million during the three and nine months ended September 30, 2018, respectively. We believe these costs are closely related to the sale of the business and have excluded such costs from Pro forma FFO and AFFO.

(6) Represents the denominator for Aimco’s earnings per common share – diluted, calculated in accordance with GAAP.

Refer to the Executive Overview for discussion of our Pro forma FFO and AFFO results for 2018 compared to 2017.

Refer to the Liquidity and Capital Resources section for further information regarding our capital investing activities, including Capital Replacements.

The Aimco Operating Partnership does not separately compute or report FFO, Pro forma FFO or AFFO. However, based on Aimco’s method for allocation of such amounts to noncontrolling interests in the Aimco Operating Partnership, as well as limited differences between the amounts of net income attributable to Aimco’s common stockholders and the Aimco Operating Partnership’s

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unit holders during the periods presented, FFO, Pro forma FFO and AFFO amounts on a per unit basis for the Aimco Operating Partnership would be expected to be substantially the same as the corresponding per share amounts for Aimco.

Leverage Ratios

We target the ratio of Proportionate Debt and Preferred Equity to Adjusted EBITDA to be below 7.0x and we target the ratio of Adjusted EBITDA to Adjusted Interest Expense and Preferred Dividends to be greater than 2.5x. We believe these ratios are important measures as they are commonly used by investors and analysts to assess the relative financial risk associated with balance sheets of companies within the same industry, and they are believed to be similar to measures used by rating agencies to assess entity credit quality.

We calculate Adjusted EBITDA and Adjusted Interest used in our leverage ratios based on the most recent three month amounts, annualized.

Proportionate Debt, as used in our leverage ratios, is a non-GAAP measure and includes our share of the long-term, non-recourse property debt secured by apartment communities in the Real Estate portfolio and outstanding borrowings under our revolving credit facility and term loan, reduced by our share of the cash and restricted cash of our consolidated and unconsolidated partnerships owning communities in our Real Estate portfolio, and also by our investment in the subordinate tranches of a securitization trust that holds certain of our property debt, which is essentially an investment in our own non-recourse property loans.

In our Proportionate Debt computation, we increase our recorded debt by unamortized debt issue costs because these amounts represent cash expended in earlier periods and do not reduce our contractual obligations, and we reduce our recorded debt by the amounts of cash and restricted cash on-hand which are primarily restricted under the terms of our property debt agreements, assuming these amounts would be used to reduce our outstanding leverage. We further reduce our recorded debt by the value of our investment in a securitization trust that holds certain of our property debt, as our payments of principal and interest associated with such property debt will ultimately repay our investments in the trust.

We believe Proportionate Debt is useful to investors as it is a measure of our net exposure to debt obligations. Proportionate Debt, as used in our leverage ratios, is calculated as set forth in the table below.

Preferred Equity, as used in our leverage ratios, represents the redemption amounts for Aimco’s preferred stock and the Aimco Operating Partnership’s preferred OP Units. Preferred Equity, although perpetual in nature, is another component of our overall leverage.

Adjusted EBITDA is a non-GAAP measure. We believe Adjusted EBITDA provides investors relevant and useful information because it allows investors to view income from our operations on an unleveraged basis, before the effects of taxes, depreciation and amortization, gains or losses on sales of and impairment losses related to real estate, and various other items described below. Adjusted EBITDA represents Aimco’s share of the consolidated amount of our net income, adjusted to exclude the effect of the following items for the reasons set forth below:

• Adjusted Interest Expense, defined below, to allow investors to compare a measure of our earnings before the effects of our indebtedness with that of other companies in the real estate industry;

• preferred dividends, to allow investors to compare a measure of our performance before the effects of our capital structure (including indebtedness) with that of other companies in the real estate industry;

• income taxes, to allow investors to measure our performance independent of income taxes, which may vary significantly from other companies within our industry due to leverage and tax planning strategies, among other factors;

• depreciation and amortization, gains or losses on dispositions and impairment losses related to real estate, for similar reasons to those set forth in our discussion of FFO, Pro forma FFO and AFFO in the preceding section; and

• other items, including gains on dispositions of non-depreciable assets, as these are items that periodically affect our operations but that are not necessarily representative of our ability to service our debt obligations.

While Adjusted EBITDA is a relevant measure of performance and is commonly used in leverage ratios, it does not represent net income as defined by GAAP, and should not be considered an alternative to net income in evaluating our performance.  Further, our definition and computation of Adjusted EBITDA may not be comparable to similar measures reported by other companies.

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Adjusted Interest Expense, as calculated in our leverage ratios, is a non-GAAP measure that we believe is meaningful for investors and analysts as it presents our share of current recurring interest requirements associated with leverage. Adjusted Interest Expense represents our proportionate share of interest expense on non-recourse property debt encumbering apartment communities in the Real Estate portfolio and interest expense on our term loan and revolving credit facility borrowings. We exclude from our calculation of Adjusted Interest Expense:

• debt prepayment penalties, which are items that, from time to time, affect our operating results but are not representative of our scheduled interest obligations;

• the amortization of debt issue costs, as these amounts have been expended in previous periods and are not representative of our current or prospective debt service requirements; and

• the income we receive on our investment in the securitization trust that holds certain of our property debt, as this income is being generated indirectly from interest we pay with respect to property debt held by the trust.

Preferred Dividends represents the preferred dividends paid on Aimco’s preferred stock and the preferred distributions paid on the Aimco Operating Partnership’s preferred OP Units, exclusive of preferred equity redemption related amounts. We add Preferred Dividends to Adjusted Interest Expense for a more complete picture of the interest and dividend requirements of our leverage, inclusive of perpetual preferred equity.

Reconciliations of the most closely related GAAP measures to our calculations of Proportionate Debt, Preferred Equity, Adjusted EBITDA, Adjusted Interest Expense and Preferred Dividends, as used in our leverage ratios, are as follows (in thousands):

	September 30, 2018
Total indebtedness associated with Real Estate portfolio	$	3,646,789
Adjustments:
Debt issue costs related to non-recourse property debt	18,488
Proportionate share adjustments related to debt obligations of consolidated and unconsolidated partnerships	(9,550		)
Cash and restricted cash	(104,299		)
Proportionate share adjustments related to cash and restricted cash held by consolidated and unconsolidated partnerships	2,380
Securitization trust investment and other	(87,011		)
Proportionate Debt	$	3,466,797
Preferred stock	$	125,000
Preferred OP Units	101,320
Preferred Equity	226,320
Proportionate Debt and Preferred Equity	$	3,693,117

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	Three Months Ended September 30, 2018
Net income attributable to Aimco Common Stockholders	$	567,029
Adjustments:
Adjusted Interest Expense	39,545
Income tax benefit	(27,941		)
Depreciation and amortization, net of noncontrolling interest	96,349
Gain on disposition and other, inclusive of related income taxes and net of noncontrolling partners’ interests	(570,384		)
Preferred stock dividends	2,148
Net income attributable to noncontrolling interests in Aimco Operating Partnership	32,946
Pro forma adjustment (1)	(6,212		)
Adjusted EBITDA	$	133,480
Annualized Adjusted EBITDA	$	533,920
(1) Adjusted EBITDA has been adjusted on a pro forma basis to reflect the dispositions of Chestnut Hill Village, the Asset Management business, and the four Hunters Point communities during the period as if the transactions had been closed on July 1, 2018.

	Three Months Ended September 30, 2018
Interest expense	$	45,492
Interest expense related to non-recourse property debt obligations of consolidated partnerships served by our Asset Management business	(854		)
Interest expense attributable to Real Estate portfolio	44,638
Adjustments:
Proportionate share adjustments related to interest of consolidated and unconsolidated partnerships	(102		)
Debt prepayment penalties and other non-interest items	(1,410		)
Amortization of debt issue costs	(1,658		)
Interest income earned on securitization trust investment	(1,923		)
Adjusted Interest Expense	$	39,545
Preferred stock dividends	2,148
Preferred OP Unit distributions	1,934
Preferred Dividends	4,082
Adjusted Interest Expense and Preferred Dividends	$	43,627
Annualized Adjusted Interest Expense	$	158,180
Annualized Adjusted Interest Expense and Preferred Dividends	$	174,508

Liquidity and Capital Resources

Liquidity

Liquidity is the ability to meet present and future financial obligations. Our primary source of liquidity is cash flow from operations. Additional sources are proceeds from sales of apartment communities, proceeds from refinancings of existing property debt, borrowings under new property debt, borrowings under our revolving credit facility and proceeds from equity offerings.

Our principal uses for liquidity include normal operating activities, payments of principal and interest on outstanding property debt, capital expenditures, dividends paid to stockholders, distributions paid to noncontrolling interest partners and acquisitions of apartment communities. We use our cash and cash equivalents and our cash provided by operating activities to meet short-term liquidity needs. In the event that our cash and cash equivalents and cash provided by operating activities are not sufficient to cover our short-term liquidity needs, we have additional means, such as short-term borrowing availability and proceeds from apartment community sales and refinancings. We may use our revolving credit facility for working capital and other short-term purposes, such as funding investments on an interim basis. We expect to meet our long-term liquidity requirements, such as debt maturities,

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redevelopment spending and apartment community acquisitions, through primarily non-recourse, long-term borrowings, the issuance of equity securities (including OP Units), the sale of apartment communities and cash generated from operations.

As of September 30, 2018, our primary sources of liquidity were as follows:

• $58.0 million in cash and cash equivalents;

• $46.3 million of restricted cash, which consists primarily of escrows related to resident security deposits and reserves and escrows held by lenders for capital additions, property taxes and insurance; and

• $592.9 million of capacity to borrow under our revolving credit facility after consideration of $7.1 million of letters of credit backed by the facility.

At September 30, 2018, we also held unencumbered apartment communities with an estimated fair market value of approximately $2.3 billion.

Leverage and Capital Resources

The availability of credit and its related effect on the overall economy may affect our liquidity and future financing activities, both through changes in interest rates and access to financing. Currently, interest rates are low compared to historical levels and many lenders are active in the market. However, any adverse changes in the lending environment could negatively affect our liquidity. We believe we have mitigated much of this exposure by reducing our short and intermediate term maturity risk through refinancing such loans with long-dated, fixed-rate property debt. However, if property financing options become unavailable for our further debt needs, we may consider alternative sources of liquidity, such as reductions in capital spending or proceeds from apartment community dispositions.

Two credit rating agencies rate our creditworthiness and both have rated our credit and outlook as BBB- (stable), an investment grade rating. Our investment grade rating would be useful in accessing capital through the sale of bonds in private or public transactions. However, our intention and historical practice has been to raise debt capital in the form of property-level, non-recourse, long-dated, fixed-rate, amortizing debt, the cost of which is generally less than that of recourse debt and the terms of which also provide for greater balance sheet safety.

As of September 30, 2018, approximately 94.2% of our leverage consisted of property-level, non-recourse, long-dated, amortizing debt. Approximately 96.4% of this property-level debt is fixed-rate, which provides a hedge against increases in interest rates, capitalization rates and inflation. The weighted average maturity of our property-level debt was 7.0 years. There are no unpaid principal balances maturing during the remainder of 2018, and on average, 12.2% of our unpaid principal balance will mature each year from 2019 through 2021.

While our primary source of leverage is property-level, non-recourse, long-dated, fixed-rate, amortizing debt, we also have a credit facility with a syndicate of financial institutions. Our credit facility provides for $600.0 million of revolving loan commitments. As of September 30, 2018, we had no outstanding borrowings under our revolving credit facility. The revolving credit facility provides us with an option to expand the aggregate loan commitments, subject to customary conditions, by up to $200.0 million. The credit facility also provided for a $250.0 million term loan, which we repaid in full during the three months ended September 30, 2018.

As of September 30, 2018, our outstanding perpetual preferred equity represented approximately 5.8% of our total leverage. Our preferred securities are perpetual in nature; however, for illustrative purposes, we compute the weighted average maturity of our total leverage assuming a 40-year maturity for our preferred securities.

The combination of non-recourse property-level debt, borrowings under our revolving credit facility and perpetual preferred equity that comprises our total leverage, reduces our refunding and re-pricing risk. The weighted average maturity for our total leverage described above was 8.9 years as of September 30, 2018.

Under the revolving credit facility, we have agreed to maintain a Fixed Charge Coverage ratio of 1.40x, as well as comply with other covenants customary for similar revolving credit arrangements. For the trailing twelve month period ended September 30, 2018, our Fixed Charge Coverage ratio was 2.01x, compared to a ratio of 1.99x for the trailing twelve month period ended September 30, 2017. We expect to remain in compliance with this covenant during the next 12 months.

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As of June 30, 2018, we had $1.6 billion of property-level debt scheduled to mature between 2019 and 2021 and $125 million of 6.875% preferred stock callable in 2019. During the three months ended September 30, 2018, we repaid $120 million of the property-level debt. We intend to redeem the preferred stock in May 2019. We are addressing the majority of these remaining maturities and have rate-locked $620 million of non-recourse, property loans: $500 million of these loans are fixed rate with a weighted average maturity of nine years and a weighted average interest rate of 4.17%, and $120 million of these loans have five-year terms and interest rates floating at a weighted average of 115 basis points over 30-day LIBOR. In connection with the expected refinancing activity, we expect to incur approximately $14 million of debt extinguishment costs. The completion of the refinancing activity will result in reduced refunding risk, lowered interest expense, an improved ladder of maturities, and an increase in the value of our unencumbered pool to over $3 billion, an almost 70% increase from December 31, 2017.

We like the discipline of financing our investments in real estate through the use of fixed-rate, amortizing, non-recourse property debt, as the amortization gradually reduces our leverage and reduces our refunding risk, and the fixed-rate provides a hedge against increases in interest rates, and the non-recourse feature avoids entity risk.

Changes in Cash, Cash Equivalents and Restricted Cash

The following discussion relates to changes in consolidated cash, cash equivalents and restricted cash due to operating, investing and financing activities, which are presented in our condensed consolidated statements of cash flows included in Item 1 of this report.

Operating Activities

For the nine months ended September 30, 2018, net cash provided by operating activities was $302.9 million. Our operating cash flow is affected primarily by rental rates, occupancy levels and operating expenses related to our portfolio of apartment communities. Cash provided by operating activities for the nine months ended September 30, 2018, increased by $7.8 million compared to 2017, due improved operating results of our Same Store communities and increased contribution from our redevelopment and lease-up communities, partially offset by the sale of our Asset Management business.

Investing Activities

For the nine months ended September 30, 2018, net cash provided by investing activities of $239.1 million consisted primarily of proceeds from the disposition of the Asset Management business, four affordable apartment communities located in the Hunters Point area of San Francisco, and four conventional apartment communities, partially offset by the acquisitions of Bent Tree Apartments and four apartment communities in Philadelphia and capital expenditures. Capital expenditures totaled $253.1 million and $266.6 million during the nine months ended September 30, 2018 and 2017, respectively. We generally fund capital expenditures with cash provided by operating activities and cash proceeds from apartment community sales.

Further information about the acquisitions and dispositions completed during the nine months ended September 30, 2018, is included in Note 3 to the condensed consolidated financial statements in Item 1.

Capital additions for our Real Estate segment totaled $241.6 million and $243.3 million during the nine months ended September 30, 2018 and 2017, respectively. We generally fund capital additions with cash provided by operating activities and cash proceeds from sales of apartment communities.

We categorize capital spending for communities in our Real Estate portfolio broadly into six primary categories:

• capital replacements, which represent capital additions made to replace the portion of acquired apartment communities consumed during our period of ownership;

• capital improvements, which represent capital additions made to replace the portion of acquired apartment communities consumed prior to our period of ownership;

• capital enhancements, which may include kitchen and bath remodeling, energy conservation projects and investments in longer-lived materials designed to reduce turnover costs and maintenance, all of which are generally lesser in scope than redevelopment additions and do not significantly disrupt property operations;

• redevelopment additions, which represent capital additions intended to enhance the value of the apartment community through the ability to generate higher average rental rates, and may include costs related to entitlement, which enhance the value of a community through increased density, and costs related to renovation of exteriors, common areas or apartment homes;

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• development additions, which represent construction and related capitalized costs associated with development of apartment communities; and

• casualty capital additions, which represent construction and related capitalized costs incurred in connection with the restoration of an apartment community after a casualty event such as a severe snow storm, hurricane, tornado, flood or fire.

We exclude the amounts of capital spending related to apartment communities sold or classified as held for sale at the end of the period from the foregoing measures. We have also excluded from these measures indirect capitalized costs, which are not yet allocated to apartment communities with capital additions, and their related capital spending categories.

A summary of the capital spending for these categories, along with a reconciliation of the total for these categories to the capital expenditures reported in the accompanying condensed consolidated statements of cash flows for the nine months ended September 30, 2018 and 2017, are presented below (in thousands):

	Nine Months Ended September 30,
	2018			2017
Real Estate
Capital replacements	$	24,222		$	29,607
Capital improvements	9,086			11,857
Capital enhancements	78,516			75,569
Redevelopment additions	94,568			114,165
Development additions	30,229			5,783
Casualty capital additions	4,992			6,284
Real Estate capital additions	241,613			243,265
Plus: additions related to apartment communities sold or held for sale and unallocated indirect capitalized costs	13,470			17,678
Plus: additions related to consolidated asset managed communities	—			814
Consolidated capital additions	255,083			261,757
Plus: net change in accrued capital spending	(1,934		)	4,866
Capital expenditures per condensed consolidated statement of cash flows	$	253,149		$	266,623

For the nine months ended September 30, 2018 and 2017, we capitalized $5.7 million and $5.9 million of interest costs, respectively, and $26.8 million and $26.8 million of other direct and indirect costs, respectively.

We invested $78.5 million in capital enhancements during the nine months ended September 30, 2018, and we anticipate a full year investment ranging from $90 million to $100 million.

Redevelopment and Development

We execute redevelopments using a range of approaches. We prefer to limit risk by executing redevelopments using a phased approach, in which we renovate an apartment community in stages. Smaller phases provide us the flexibility to maintain current earnings while aligning the timing of the completed apartment homes with market demand. The following table summarizes ongoing redevelopments of this nature at September 30, 2018 (dollars in millions):

	Location	Apartment Homes Approved for Redevelopment	Estimated/Potential Net Investment		Inception-to-Date Net Investment
Bay Parc	Miami, FL	60	$	24.1	$	19.7
Calhoun Beach Club	Minneapolis, MN	275	28.7		10.5
Flamingo South Beach	Miami Beach, FL	—	39.7		12.0
Palazzo West at The Grove	Los Angeles, CA	389	24.5		18.7
Saybrook Pointe	San Jose, CA	324	18.8		18.6
Yorktown	Lombard, IL	292	25.7		19.9
Other	Various	92	12.9		11.6
Total		1,432	$	174.4	$	111.0

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We also undertake ground-up development when warranted by risk-adjusted investment returns, either directly or in connection with the redevelopment of an existing apartment community. When smaller redevelopment phases are not possible, we may engage in redevelopment activities where an entire building or community is vacated. The following table summarizes our investments related to these developments and redevelopments at September 30, 2018 (dollars in millions):

	Location	Apartment Homes Approved for Redevelopment or Development	Estimated/Potential Net Investment		Inception-to-Date Net Investment		Stabilized Occupancy	NOI Stabilization
Anschutz Expansion	Aurora, CO	253	$	87.0	$	4.1	3Q 2021	4Q 2022
Parc Mosaic	Boulder, CO	226	117.0		51.2		4Q 2020	1Q 2022
Park Towne Place	Philadelphia, PA	940	176.0		172.3		1Q 2019	2Q 2020
Total		1,419	$	380.0	$	227.6

Net investment represents the total actual or estimated investment, net of tax and other credits earned as a direct result of our redevelopment or development of the community. For phased redevelopments, potential net investment relates to the current phase of the redevelopment.

Stabilized Occupancy represents the period in which we expect to achieve stabilized occupancy, generally greater than 90%.

NOI Stabilization represents the period in which we expect the communities to achieve stabilized rents and operating costs, generally five quarters after occupancy stabilization.

Our total estimated or potential net investment in redevelopment and development is $554.4 million with a projected weighted average net operating income yield on these investments of 6.1%, assuming untrended rents. Of this total, $338.6 million has been funded. We expect to fund the remaining redevelopment and development investment through a combination of leverage and proceeds from community sales.

During the nine months ended September 30, 2018, we invested $124.8 million in redevelopment and development. In Center City, Philadelphia, we have substantially completed redevelopment of the vacated fourth and final tower of Park Towne Place. During the three months ended September 30, 2018, average daily occupancy at the three completed towers was 89.1%. As of September 30, 2018, the three completed towers were 95% leased and the fourth tower was 71% leased.

We also commenced the next phase of redevelopment at our Flamingo community, located in Miami Beach. This $30 million phase includes extensive redevelopment of retail, leasing, and common areas, including major enhancements to the entryway.

During the nine months ended September 30, 2018, we exercised our option to acquire approximately two acres of land adjacent to our 21 Fitzsimons apartment community, located on the University of Colorado Anschutz Medical Campus, and broke ground on the development of a 253-apartment home community. We expect to invest approximately $87 million to construct the community, which is expected to be complete in the third quarter of 2020.

During the nine months ended September 30, 2018, we leased 329 apartment homes at our redevelopment communities. As of September 30, 2018, our exposure to lease-up at active redevelopment and development communities was approximately 341 apartment homes, of which 62 were in the fourth tower of Park Towne Place, 213 were being constructed at Parc Mosaic, and 66 were located in three other communities.

We expect our total development and redevelopment spending to range from $170 million to $190 million for the year ending December 31, 2018.

Financing Activities

For the nine months ended September 30, 2018, net cash used in financing activities of $580.3 million was primarily attributed to repayments on non-recourse property debt, the pay down of the term loan and revolving credit facility, dividends paid to common security holders, distributions paid to noncontrolling interests, and redemptions of noncontrolling interest, partially offset by proceeds from non-recourse property debt.

Net borrowings on our revolving credit facility primarily relate to the timing of apartment community acquisitions and dispositions and of property debt financing activities.

Proceeds from non-recourse property debt borrowings during the period consisted of the closing of two fixed-rate, amortizing, non-recourse property loans totaling $242.0 million. These loans have 10-year terms and a weighted average interest rate of 3.48%,

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126 basis points more than the corresponding Treasury rate at the time of pricing. The net effect of 2018 fixed-rate property debt refinancing activities has been to lower our weighted average fixed interest rate by 16 basis points since December 31, 2017, to 4.48%, reducing prospective interest expense by more than $5.7 million.

Proceeds from non-recourse property debt borrowing during the period also included the closing of two non-recourse, variable-rate property loans totaling $118.6 million. These loans each have a 5-year term and bear interest at 30-day LIBOR plus 1.25%. The five-year terms fill a hole in our laddered maturities and, taken together with the repayment of the variable term loan, reduce our exposure to increasing short-term interest rates to approximately 3% of our leverage.

Principal payments on property loans during the period totaled $403.1 million, consisting of scheduled principal amortization of $63.0 million and repayments of $340.1 million.

Net cash used in financing activities also includes $207.9 million of payments to equity holders, as further detailed in the table below.

Equity and Partners’ Capital Transactions

The following table presents the Aimco Operating Partnership’s distribution activity (including distributions paid to Aimco) during the nine months ended September 30, 2018 (in thousands):

Cash distributions paid to holders of noncontrolling interests in consolidated real estate partnerships	$	7,934
Cash distributions paid by the Aimco Operating Partnership to preferred unitholders (1)	12,250
Cash distributions paid by the Aimco Operating Partnership to common unitholders (2)	187,747
Total cash distributions paid by the Aimco Operating Partnership	$	207,931

(1) $6.4 million represented distributions to Aimco, and $5.8 million represented distributions paid to holders of OP Units.

(2) $178.9 million represented distributions to Aimco, and $8.8 million represented distributions paid to holders of OP Units.

The following table presents Aimco’s dividend activity during the nine months ended September 30, 2018 (in thousands):

Cash distributions paid to holders of noncontrolling interests in consolidated real estate partnerships	$	7,934
Cash distributions paid to holders of OP Units	14,615
Cash dividends paid by Aimco to preferred stockholders	6,445
Cash dividends paid by Aimco to common stockholders	178,937
Total cash dividends and distributions paid by Aimco	$	207,931

During the nine months ended September 30, 2018, we repurchased $8.5 million of OP Units at an average discount of approximately 20% to our estimated net asset value per share.

Future Capital Needs

We expect to fund any future acquisitions, redevelopment, development, and other capital spending principally with proceeds from apartment community sales, short-term borrowings, debt and equity financing and operating cash flows. Our near term business plan does not contemplate the issuance of equity.

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ITEM 3. Quantitative and Qualitative Disclosures About Market Risk

As of September 30, 2018, on a consolidated basis, we had approximately $133.1 million of variable-rate property debt outstanding, and no borrowings under our revolving credit facility. We estimate that a change in 30-day LIBOR of 100 basis points with constant credit risk spreads would reduce or increase net income attributable to Aimco common stockholders and the Aimco Operating Partnership’s common unitholders by approximately $1.3 million on an annual basis.

At September 30, 2018, our Real Estate segment had approximately $104.3 million in cash and cash equivalents and restricted cash, a portion of which bears interest at variable rates, which may offset somewhat a change in rates on our variable-rate debt discussed above.

We estimate the fair value for debt instruments as described in Note 6 to the condensed consolidated financial statements in Item 1. The estimated fair value of total indebtedness associated with the Real Estate portfolio was approximately $3.6 billion at September 30, 2018, inclusive of a $64.0 million mark-to-market asset. The mark-to-market liability at December 31, 2017 was $55.1 million.

If market rates for consolidated fixed-rate debt in our Real Estate segment were higher by 100 basis points with constant credit risk spreads, the estimated fair value of consolidated debt discussed above would decrease from $3.6 billion in the aggregate to $3.5 billion. If market rates for consolidated debt discussed above were lower by 100 basis points with constant credit risk spreads, the estimated fair value of consolidated fixed-rate debt would increase from $3.6 billion in the aggregate to $3.7 billion.

ITEM 4. Controls and Procedures

Aimco

Disclosure Controls and Procedures

Aimco’s management, with the participation of Aimco’s chief executive officer and chief financial officer, has evaluated the effectiveness of Aimco’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on such evaluation, Aimco’s chief executive officer and chief financial officer have concluded that, as of the end of such period, Aimco’s disclosure controls and procedures are effective.

Changes in Internal Control Over Financial Reporting

There has been no change in Aimco’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the third quarter of 2018 that has materially affected, or is reasonably likely to materially affect, Aimco’s internal control over financial reporting.

The Aimco Operating Partnership

Disclosure Controls and Procedures

The Aimco Operating Partnership’s management, with the participation of the chief executive officer and chief financial officer of both Aimco and AIMCO-GP, Inc., the Aimco Operating Partnership’s general partner, has evaluated the effectiveness of the Aimco Operating Partnership’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange) as of the end of the period covered by this report. Based on such evaluation, the chief executive officer and chief financial officer of AIMCO-GP, Inc. have concluded that, as of the end of such period, the Aimco Operating Partnership’s disclosure controls and procedures are effective.

Changes in Internal Control Over Financial Reporting

There has been no change in the Aimco Operating Partnership’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the third quarter of 2018 that has materially affected, or is reasonably likely to materially affect, the Aimco Operating Partnership’s internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1A. Risk Factors

As of the date of this report, there have been no material changes from the risk factors in Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K for the year ended December 31, 2017.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

Aimco

(a) Unregistered Sales of Equity Securities. Aimco did not issue any unregistered shares of Common Stock during the three months ended September 30, 2018.

(c) Repurchases of Equity Securities. There were no repurchases by Aimco of its common equity securities during the three months ended September 30, 2018. Aimco’s Board of Directors has, from time to time, authorized Aimco to repurchase shares of its outstanding capital stock. As of September 30, 2018, Aimco was authorized to repurchase approximately 19.3 million additional shares. This authorization has no expiration date. These repurchases may be made from time to time in the open market or in privately negotiated transactions.

The Aimco Operating Partnership

(a) Unregistered Sales of Equity Securities. The Aimco Operating Partnership did not issue any unregistered OP Units during the three months ended September 30, 2018.

(c) Repurchases of Equity Securities. The Aimco Operating Partnership’s Partnership Agreement generally provides that after holding the common OP Units for one year, limited partners have the right to redeem their common OP Units for cash, subject to the Aimco Operating Partnership’s prior right to cause Aimco to acquire some or all of the common OP Units tendered for redemption in exchange for shares of Common Stock. Common OP Units redeemed for Common Stock are exchanged on a one-for-one basis (subject to antidilution adjustments). During the three months ended September 30, 2018, no common OP Units were redeemed in exchange for shares of Common Stock. The following table summarizes repurchases, or redemptions in exchange for cash, of the Aimco Operating Partnership’s equity securities for the three months ended September 30, 2018.

Period	Total Number of Units Purchased	Average Price Paid per Unit		Total Number of Units Purchased as Part of Publicly Announced Plans or Programs (1)	Maximum Number of Units that May Yet Be Purchased Under the Plans or Programs (1)
July 1 - July 31, 2018	5,466	$	41.50	N/A	N/A
August 1 - August 31, 2018	6,094	42.69		N/A	N/A
September 1 - September 30, 2018	8,245	43.59		N/A	N/A
Total	19,805	$	42.74

(1) The terms of the Aimco Operating Partnership’s Partnership Agreement do not provide for a maximum number of units that may be repurchased, and other than the express terms of its Partnership Agreement, the Aimco Operating Partnership has no publicly announced plans or programs of repurchase. However, for Aimco to repurchase shares of its Common Stock, the Aimco Operating Partnership must make a concurrent repurchase of its common partnership units held by Aimco at a price per unit that is equal to the price per share Aimco pays for its Common Stock.

Aimco and the Aimco Operating Partnership

Dividend and Distribution Payments. Our revolving credit facility includes customary covenants, including a restriction on dividends and distributions and other restricted payments, but permits dividends and distributions during any 12-month period in an aggregate amount of up to 95% of Aimco’s Funds From Operations, subject to certain non-cash adjustments, for such period or such amount as may be necessary for Aimco to maintain its REIT status.

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ITEM 6. Exhibits

The following exhibits are filed with this report:

EXHIBIT NO. (1)	DESCRIPTION
3.1	Charter
3.2	Amended and Restated Bylaws (Exhibit 3.1 to Aimco’s Current Report on Form 8-K dated January 26, 2016, is incorporated herein by this reference)
10.1	Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 29, 1994, as amended and restated as of February 28, 2007 (Exhibit 10.1 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 2006, is incorporated herein by this reference)
10.2	First Amendment to Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of December 31, 2007 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 31, 2007, is incorporated herein by this reference)
10.3	Second Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 30, 2009 (Exhibit 10.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009, is incorporated herein by this reference)
10.4	Third Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of September 2, 2010 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated September 3, 2010, is incorporated herein by this reference)
10.5	Fourth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 26, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated July 26, 2011, is incorporated herein by this reference)
10.6	Fifth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of August 24, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated August 24, 2011, is incorporated herein by this reference)
10.7	Sixth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of December 31, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 31, 2011, is incorporated herein by this reference)
10.8	Seventh Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of May 13, 2014 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated May 13, 2014, is incorporated herein by this reference)
10.9	Eighth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of October 31, 2014 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated November 4, 2014, is incorporated herein by this reference)
10.10	Ninth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of August 16, 2016 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated August 16, 2016, is incorporated herein by this reference)
10.11	Tenth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of January 31, 2017 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated January 31, 2017, is incorporated herein by this reference)
10.12	Second Amended and Restated Senior Secured Credit Agreement, dated as of June 30, 2017, among Aimco, the Aimco Operating Partnership, AIMCO/Bethesda Holdings, Inc., the lenders party thereto and KeyBank N. A., as administrative agent, swing line lender and letter of credit issuer. (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated June 30, 2017, is incorporated herein by this reference)
10.13	Aimco Executive Severance Policy (Exhibit 10.1 to Aimco’s Current Report on Form 8-K dated February 22, 2018, is incorporated herein by this reference)*
10.14	Aimco Second Amended and Restated 2015 Stock Award and Incentive Plan (as amended and restated effective February 22, 2018) (Exhibit A to Aimco’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 8, 2018 is incorporated herein by this reference)*
10.15	Form of Performance Vesting LTIP II Unit Agreement (2015 Stock Award and Incentive Plan) (Exhibit 10.15 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018, is incorporated herein by this reference)*
31.1	Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 – Aimco
31.2	Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 – Aimco
31.3	Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 – the Aimco Operating Partnership
31.4	Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 – the Aimco Operating Partnership

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EXHIBIT NO. (1)		DESCRIPTION
32.1		Certifications of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 – Aimco
32.2		Certifications of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 – the Aimco Operating Partnership
99.1		Agreement Regarding Disclosure of Long-Term Debt Instruments – Aimco
99.2		Agreement Regarding Disclosure of Long-Term Debt Instruments – the Aimco Operating Partnership
101		XBRL (Extensible Business Reporting Language). The following materials from Aimco’s and the Aimco Operating Partnership’s combined Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2018, tagged in XBRL: (i) condensed consolidated balance sheets; (ii) condensed consolidated statements of operations; (iii) condensed consolidated statements of comprehensive income; (iv) condensed consolidated statements of cash flows; and (v) notes to condensed consolidated financial statements.
(1)	Schedules and supplemental materials to the exhibits have been omitted but will be provided to the Securities and Exchange Commission upon request.
*	Management contract or compensatory plan or arrangement

46

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.

APARTMENT INVESTMENT AND MANAGEMENT COMPANY
By:	/s/ PAUL BELDIN
	Paul Beldin
	Executive Vice President and Chief Financial Officer
	(duly authorized officer and
	principal financial officer)

AIMCO PROPERTIES, L.P.
By:	AIMCO-GP, Inc., its general partner
By:	/s/ PAUL BELDIN
	Paul Beldin
	Executive Vice President and Chief Financial Officer
	(duly authorized officer and
	principal financial officer)

Date: November 2, 2018

47

EX-31.1

Exhibit 31.1

CHIEF EXECUTIVE OFFICER CERTIFICATION

I, Terry Considine, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Apartment Investment and Management Company;

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

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

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

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

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

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

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

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

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

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

Date: November 2, 2018

/s/ Terry Considine

Terry Considine

Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

CHIEF FINANCIAL OFFICER CERTIFICATION

I, Paul Beldin, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Apartment Investment and Management Company;

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

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

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

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

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

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

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

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

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

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

Date: November 2, 2018

/s/ Paul Beldin

Paul Beldin

Executive Vice President and Chief

Financial Officer

EX-31.3

Exhibit 31.3

CHIEF EXECUTIVE OFFICER CERTIFICATION

I, Terry Considine, certify that:

1. I have reviewed this quarterly report on Form 10-Q of AIMCO Properties, L.P.;

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

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

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

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

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

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

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

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

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

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

Date: November 2, 2018

/s/ Terry Considine

Terry Considine

Chairman and Chief Executive Officer

EX-31.4

Exhibit 31.4

CHIEF FINANCIAL OFFICER CERTIFICATION

I, Paul Beldin, certify that:

1. I have reviewed this quarterly report on Form 10-Q of AIMCO Properties, L.P.;

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

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

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

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

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

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

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

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

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

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

Date: November 2, 2018

/s/ Paul Beldin

Paul Beldin

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of CEO Pursuant to

18 U.S.C. Section 1350,

As Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report of Apartment Investment and Management Company (the “Company”) on Form 10-Q for the period ended September 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

(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 Company.

/s/ Terry Considine

Terry Considine

Chairman and Chief Executive Officer

November 2, 2018

/s/ Paul Beldin

Paul Beldin

Executive Vice President and Chief Financial Officer

November 2, 2018

EX-32.2

Exhibit 32.2

Certification of CEO Pursuant to

18 U.S.C. Section 1350,

As Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report of AIMCO Properties, L.P. (the “Partnership”) on Form 10-Q for the period ended September 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

(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 Partnership.

/s/ Terry Considine

Terry Considine

Chairman and Chief Executive Officer

November 2, 2018

/s/ Paul Beldin

Paul Beldin

Executive Vice President and Chief Financial Officer

November 2, 2018

EX-99.1

Exhibit 99.1

Agreement Regarding Disclosure of Long-Term Debt Instruments

In reliance upon Item 601(b)(4)(iii)(A) of Regulation S-K, Apartment Investment and Management Company, a Maryland corporation (the "Company"), has not filed as an exhibit to its quarterly report on Form 10-Q for the quarterly period ended September 30, 2018, any instrument with respect to long-term debt not being registered where the total amount of securities authorized thereunder does not exceed ten percent of the total assets of the Company and its subsidiaries on a consolidated basis. Pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, the Company hereby agrees to furnish a copy of any such agreement to the Securities and Exchange Commission upon request.

By:	/s/ Paul Beldin
	Paul Beldin
	Executive Vice President and Chief Financial Officer
	November 2, 2018

EX-99.2

Exhibit 99.2

Agreement Regarding Disclosure of Long-Term Debt Instruments

In reliance upon Item 601(b)(4)(iii)(A) of Regulation S-K, AIMCO Properties, L.P., a Delaware limited partnership (the "Partnership"), has not filed as an exhibit to its quarterly report on Form 10-Q for the quarterly period ended September 30, 2018, any instrument with respect to long-term debt not being registered where the total amount of securities authorized thereunder does not exceed ten percent of the total assets of the Partnership and its subsidiaries on a consolidated basis. Pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, the Partnership hereby agrees to furnish a copy of any such agreement to the Securities and Exchange Commission upon request.

By:	/s/ Paul Beldin
	Paul Beldin
	Executive Vice President and Chief Financial Officer
	November 2, 2018

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 01, 2018
Entity Registrant Name	APARTMENT INVESTMENT & MANAGEMENT CO
Entity Central Index Key	0000922864
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company
Entity Small Business
Entity Common Stock, Shares Outstanding		155,644,246
AIMCO Properties, LP [Member]
Entity Registrant Name	AIMCO PROPERTIES LP
Entity Central Index Key	0000926660
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		164,665,715

XML

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Total assets	$ 6,185,021	$ 6,079,040
LIABILITIES AND EQUITY
Total liabilities	3,889,571	4,321,750
Preferred noncontrolling interests/Redeemable Preferred Units	101,320	101,537
Commitments and contingencies (Note 4)
Equity/Partners' Capital:
Perpetual Preferred Stock	125,000	125,000
Common Stock, $0.01 par value, 500,787,260 shares authorized, 157,352,109 and 157,189,447 shares issued/outstanding at September 30, 2018 and December 31, 2017, respectively	1,574	1,572
Additional paid-in capital	3,888,312	3,900,042
Accumulated other comprehensive income	4,850	3,603
Distributions in excess of earnings	(1,894,054)	(2,367,073)
Total Aimco equity	2,125,682	1,663,144
Noncontrolling interests in consolidated real estate partnerships	(1,605)	(1,716)
Common noncontrolling interests in Aimco Operating Partnership	70,053	(5,675)
Total equity	2,194,130	1,655,753
Total liabilities and equity	6,185,021	6,079,040
Asset Management [Member]
ASSETS
Net real estate	0	224,873
Cash and cash equivalents	0	16,288
Restricted cash	0	30,928
Other assets	0	15,533
LIABILITIES AND EQUITY
Non-recourse property debt, net	0	227,141
Accrued liabilities and other	0	19,812
Aimco Real Estate [Member]
ASSETS
Buildings and improvements	6,503,956	6,174,149
Land	1,765,678	1,753,604
Total real estate	8,269,634	7,927,753
Accumulated depreciation	(2,538,979)	(2,522,358)
Net real estate	5,730,655	5,405,395
Cash and cash equivalents	58,032	60,498
Restricted cash	46,267	34,827
Other assets	350,067	272,739
Assets held for sale	0	17,959
LIABILITIES AND EQUITY
Non-recourse property debt, net	3,646,789	3,545,109
Term loan, net	0	249,501
Revolving credit facility borrowings	0	67,160
Total indebtedness associated with Real Estate portfolio	3,646,789	3,861,770
Accrued liabilities and other	242,782	213,027
AIMCO Properties, LP [Member]
ASSETS
Total assets	6,185,021	6,079,040
LIABILITIES AND EQUITY
Total liabilities	3,889,571	4,321,750
Preferred noncontrolling interests/Redeemable Preferred Units	101,320	101,537
Commitments and contingencies (Note 4)
Equity/Partners' Capital:
Preferred units	125,000	125,000
General Partner and Special Limited Partner	2,000,682	1,538,144
Limited Partners	70,053	(5,675)
Partners’ capital attributable to the Aimco Operating Partnership	2,195,735	1,657,469
Noncontrolling interests in consolidated real estate partnerships	(1,605)	(1,716)
Total partners’ capital	2,194,130	1,655,753
Total liabilities and equity	6,185,021	6,079,040
AIMCO Properties, LP [Member] | Asset Management [Member]
ASSETS
Net real estate	0	224,873
Cash and cash equivalents	0	16,288
Restricted cash	0	30,928
Other assets	0	15,533
LIABILITIES AND EQUITY
Non-recourse property debt, net	0	227,141
Accrued liabilities and other	0	19,812
AIMCO Properties, LP [Member] | Aimco Real Estate [Member]
ASSETS
Buildings and improvements	6,503,956	6,174,149
Land	1,765,678	1,753,604
Total real estate	8,269,634	7,927,753
Accumulated depreciation	(2,538,979)	(2,522,358)
Net real estate	5,730,655	5,405,395
Cash and cash equivalents	58,032	60,498
Restricted cash	46,267	34,827
Other assets	350,067	272,739
Assets held for sale	0	17,959
LIABILITIES AND EQUITY
Non-recourse property debt, net	3,646,789	3,545,109
Term loan, net	0	249,501
Revolving credit facility borrowings	0	67,160
Total indebtedness associated with Real Estate portfolio	3,646,789	3,861,770
Accrued liabilities and other	$ 242,782	$ 213,027

XML

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	500,787,260	500,787,260
Common Stock, shares issued (in shares)	157,352,109	157,189,447
Common Stock, shares outstanding (in shares)	157,352,109	157,189,447

XML

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Tax credit and transaction revenues	$ 3,411	$ 2,695	$ 6,987	$ 8,242
Total revenues	242,481	254,635	740,388	750,208
OPERATING EXPENSES
Depreciation and amortization	96,406	92,513	286,439	268,836
General and administrative expenses	12,479	10,529	37,196	31,599
Other expenses, net	5,780	2,272	13,624	6,661
Total operating expenses	195,527	195,430	590,696	573,508
Operating income	46,954	59,205	149,692	176,700
Interest income	2,712	2,047	7,768	6,251
Interest expense	(45,492)	(50,682)	(143,193)	(145,422)
Other, net	(283)	6,937	141	7,602
Income before income taxes and gain (loss) on dispositions	3,891	17,507	14,408	45,131
Income tax benefit	27,941	4,870	69,724	14,878
Income before gain (loss) on dispositions	31,832	22,377	84,132	60,009
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	572,085	(233)	622,631	881
Net income	603,917	22,144	706,763	60,890
Noncontrolling interests:
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(1,794)	249	(8,045)	(1,515)
Net income attributable to preferred noncontrolling interests in Aimco Operating Partnership	(1,934)	(1,938)	(5,805)	(5,826)
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	(30,198)	(820)	(34,093)	(2,164)
Net income attributable to noncontrolling interests	(33,926)	(2,509)	(47,943)	(9,505)
Net income attributable to the company	569,991	19,635	658,820	51,385
Net income attributable to the company's preferred equity holders	(2,148)	(2,148)	(6,445)	(6,445)
Net income attributable to participating securities	(814)	(57)	(1,004)	(176)
Net income attributable to the company's common equity holders	$ 567,029	$ 17,430	$ 651,371	$ 44,764
Earnings attributable to the company per common share/unit
Net income attributable to the company per common share/unit - basic (in dollars per share/unit)	$ 3.62	$ 0.11	$ 4.16	$ 0.29
Net income attributable to the company per common share/unit - diluted (in dollars per share/unit)	3.61	0.11	4.15	0.29
Dividends declared per common share/unit	$ 0.38	$ 0.36	$ 1.14	$ 1.08
Weighted average number of shares outstanding - basic	156,711	156,306	156,674	156,290
Weighted average number of shares outstanding - diluted	156,938	156,835	156,836	156,768
Asset Management [Member]
REVENUES
Rental and other property revenues	$ 5,022	$ 18,232	$ 42,830	$ 55,327
OPERATING EXPENSES
Property operating expenses	2,608	8,872	20,865	26,458
Aimco Real Estate [Member]
REVENUES
Rental and other property revenues	234,048	233,708	690,571	686,639
OPERATING EXPENSES
Property operating expenses	78,254	81,244	232,572	239,954
AIMCO Properties, LP [Member]
REVENUES
Tax credit and transaction revenues	3,411	2,695	6,987	8,242
Total revenues	242,481	254,635	740,388	750,208
OPERATING EXPENSES
Depreciation and amortization	96,406	92,513	286,439	268,836
General and administrative expenses	12,479	10,529	37,196	31,599
Other expenses, net	5,780	2,272	13,624	6,661
Total operating expenses	195,527	195,430	590,696	573,508
Operating income	46,954	59,205	149,692	176,700
Interest income	2,712	2,047	7,768	6,251
Interest expense	(45,492)	(50,682)	(143,193)	(145,422)
Other, net	(283)	6,937	141	7,602
Income before income taxes and gain (loss) on dispositions	3,891	17,507	14,408	45,131
Income tax benefit	27,941	4,870	69,724	14,878
Income before gain (loss) on dispositions	31,832	22,377	84,132	60,009
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	572,085	(233)	622,631	881
Net income	603,917	22,144	706,763	60,890
Noncontrolling interests:
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(1,794)	249	(8,045)	(1,515)
Net income attributable to the company	602,123	22,393	698,718	59,375
Net income attributable to the company's preferred equity holders	(4,082)	(4,086)	(12,250)	(12,271)
Net income attributable to participating securities	(941)	(61)	(1,145)	(184)
Net income attributable to the company's common equity holders	$ 597,100	$ 18,246	$ 685,323	$ 46,920
Earnings attributable to the company per common share/unit
Net income attributable to the company per common share/unit - basic (in dollars per share/unit)	$ 3.62	$ 0.11	$ 4.17	$ 0.29
Net income attributable to the company per common share/unit - diluted (in dollars per share/unit)	3.61	0.11	4.16	0.29
Dividends declared per common share/unit	$ 0.38	$ 0.36	$ 1.14	$ 1.08
Weighted average number of shares outstanding - basic	165,081	163,664	164,493	163,739
Weighted average number of shares outstanding - diluted	165,326	164,194	164,654	164,218
AIMCO Properties, LP [Member] | Asset Management [Member]
REVENUES
Rental and other property revenues	$ 5,022	$ 18,232	$ 42,830	$ 55,327
OPERATING EXPENSES
Property operating expenses	2,608	8,872	20,865	26,458
AIMCO Properties, LP [Member] | Aimco Real Estate [Member]
REVENUES
Rental and other property revenues	234,048	233,708	690,571	686,639
OPERATING EXPENSES
Property operating expenses	$ 78,254	$ 81,244	$ 232,572	$ 239,954

XML

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 603,917	$ 22,144	$ 706,763	$ 60,890
Other comprehensive gain:
Realized and unrealized gains (losses) on interest rate swaps	0	75	0	(280)
Losses on interest rate swaps reclassified into earnings from accumulated other comprehensive loss	757	594	1,391	1,349
Unrealized gains (losses) on available for sale debt securities	979	381	(72)	(40)
Other comprehensive gain	1,736	1,050	1,319	1,029
Comprehensive income	605,653	23,194	708,082	61,919
Comprehensive income attributable to noncontrolling interests	(34,020)	(2,557)	(48,015)	(9,647)
Comprehensive income attributable to Aimco/Operating Partnership	571,633	20,637	660,067	52,272
AIMCO Properties, LP [Member]
Net income	603,917	22,144	706,763	60,890
Other comprehensive gain:
Realized and unrealized gains (losses) on interest rate swaps	0	75	0	(280)
Losses on interest rate swaps reclassified into earnings from accumulated other comprehensive loss	757	594	1,391	1,349
Unrealized gains (losses) on available for sale debt securities	979	381	(72)	(40)
Other comprehensive gain	1,736	1,050	1,319	1,029
Comprehensive income	605,653	23,194	708,082	61,919
Comprehensive income attributable to noncontrolling interests	(1,794)	249	(8,045)	(1,616)
Comprehensive income attributable to Aimco/Operating Partnership	$ 603,859	$ 23,443	$ 700,037	$ 60,303

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 706,763	$ 60,890
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	286,439	268,836
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	(622,631)	(881)
Income Tax Expense (Benefit)	(69,724)	(14,878)
Other adjustments	11,762	398
Net changes in operating assets and operating liabilities	(9,683)	(19,216)
Net cash provided by operating activities	302,926	295,149
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(212,358)	(11,706)
Capital expenditures	(253,149)	(266,623)
Proceeds from dispositions of real estate	708,464	10,888
Purchases of corporate assets	(5,530)	(7,358)
Other investing activities	1,695	(1,086)
Net cash provided by (used in) investing activities	239,122	(275,885)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	360,613	165,785
Principal repayments of non-recourse property debt	(403,141)	(250,674)
Proceeds from (Repayments of) Short-term Debt, Maturing in More than Three Months	(250,000)	250,000
Proceeds from (Repayments of) Lines of Credit	(67,160)	338,290
Payment of dividends to holders of preferred securities	(6,445)	(6,445)
Payment of dividends to holders of Common Stock	(178,937)	(168,987)
Payment of distributions to noncontrolling interests	(22,549)	(15,829)
Purchases and redemptions of noncontrolling interests	(12,256)	(324,265)
Other financing activities	415	4,693
Net cash used in financing activities	(580,290)	(16,818)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(38,242)	2,446
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	142,541	131,150
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	104,299	133,596
AIMCO Properties, LP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	706,763	60,890
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	286,439	268,836
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	(622,631)	(881)
Income Tax Expense (Benefit)	(69,724)	(14,878)
Other adjustments	11,762	398
Net changes in operating assets and operating liabilities	(9,683)	(19,216)
Net cash provided by operating activities	302,926	295,149
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(212,358)	(11,706)
Capital expenditures	(253,149)	(266,623)
Proceeds from dispositions of real estate	708,464	10,888
Purchases of corporate assets	(5,530)	(7,358)
Other investing activities	1,695	(1,086)
Net cash provided by (used in) investing activities	239,122	(275,885)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	360,613	165,785
Principal repayments of non-recourse property debt	(403,141)	(250,674)
Proceeds from (Repayments of) Short-term Debt, Maturing in More than Three Months	(250,000)	250,000
Proceeds from (Repayments of) Lines of Credit	(67,160)	338,290
Payment of dividends to holders of preferred securities	(12,250)	(12,271)
Payment of distributions to General Partner and Special Limited Partner	(178,937)	(168,987)
Payment of distributions to Limited Partners	(8,810)	(8,026)
Payment of distributions to noncontrolling interests	(7,934)	(1,977)
Purchases and redemptions of noncontrolling interests	(3,581)	(311,079)
Payments to Noncontrolling Interests	(8,675)	(13,187)
Other financing activities	415	4,692
Net cash used in financing activities	(580,290)	(16,818)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(38,242)	2,446
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	142,541	131,150
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 104,299	$ 133,596

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Organization

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which is focused on the ownership, management, redevelopment and limited development of quality apartment communities located in several of the largest markets in the United States.

Aimco, through its wholly-owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in the Aimco Operating Partnership. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership. Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as OP Units. OP Units include common partnership units, which we refer to as common OP Units, as well as partnership preferred units, which we refer to as preferred OP Units. As of September 30, 2018, after eliminations for units held by consolidated subsidiaries, the Aimco Operating Partnership had 166,384,727 common partnership units outstanding. As of September 30, 2018, Aimco owned 157,352,109 of the common partnership units (94.6% of the common partnership units) of the Aimco Operating Partnership and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock.

Except as the context otherwise requires, “we,” “our” and “us” refer to Aimco, the Aimco Operating Partnership and their consolidated subsidiaries, collectively.

As of September 30, 2018, we owned an equity interest in 133 apartment communities with 36,481 apartment homes in our Real Estate portfolio. Our Real Estate portfolio is diversified by both price point and geography and consists primarily of market rate apartment communities in which we own a substantial interest. We consolidated 129 of these apartment communities with 36,339 apartment homes and these communities comprise our reportable segment.

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Significant Transactions, Dispositions of Apartment Communities and Assets Held for Sale

9 Months Ended

Sep. 30, 2018

Discontinued Operations and Disposal Groups [Abstract]

Disposals and Other Significant Transactions

Significant Transactions, Acquisitions and Dispositions of Apartment Communities

Acquisition of Apartment Communities

During the nine months ended September 30, 2018, we acquired for $160.0 million Bent Tree Apartments, a 748-apartment home community in Fairfax County, Virginia. The purchase price, plus $1.0 million of capitalized transaction costs, was allocated as follows: $47.0 million to land; $113.0 million to buildings and improvements; and $1.0 million to other items.

During the nine months ended September 30, 2018, we acquired four apartment communities in the Philadelphia area, including 665 apartment homes and 153,000 square feet of office and retail space. The gross purchase price consisted of $208.9 million of assumed property-level debt and the issuance of 1.2 million OP Units. In accordance with GAAP, the OP Units were valued at $41.08 per unit, the closing price of Aimco’s common share on May 1, 2018. Total consideration, plus $6.4 million of capitalized transaction costs, was allocated as follows: $14.1 million to land; $289.7 million to buildings and improvements; $8.3 million to intangible assets; and $12.3 millionto intangible liabilities. In connection with the foregoing, we have also contracted to acquire an additional apartment community in the Philadelphia area, which is expected to be purchased upon completion of the construction in the first half of 2019.

Dispositions of Apartment Communities and Assets Held for Sale

During the nine months ended September 30, 2018, we sold four apartment communities with 1,334 apartment homes for a gain on disposition of $173.2 million, net of income tax, and gross proceeds of $242.3 million resulting in $230.1 million in net proceeds to us. Two of these communities are located in southern Virginia, one in suburban Maryland, and one in north Philadelphia.

During the nine months ended September 30, 2018, we sold our interests in the entities owning the La Jolla Cove property in settlement of legal actions filed in 2014 by a group of disappointed buyers who had hoped to acquire the property. We provided seller financing with a stated value of $48.6 million and received net cash proceeds of approximately $5.0 million in the sale.

During the nine months ended September 30, 2018, we sold for $590.0 million our Asset Management business and our four affordable apartment communities located in the Hunters Point area of San Francisco. The sale resulted in a gain of $448.2 million, net of $54.1 million of taxes, and net cash proceeds of $512.2 million after payment of transaction costs and repayment of property-level debt encumbering the Hunters Point apartment communities.

In addition to the apartment communities we sold during the periods presented, from time to time we may be marketing for sale certain apartment communities that are inconsistent with our long-term investment strategy. At the end of each reporting period, we evaluate whether such communities meet the criteria to be classified as held for sale. As of September 30, 2018, no apartment communities were classified as held for sale.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments

In connection with our redevelopment, development and capital improvement activities, we have entered into various construction-related contracts and we have made commitments to complete redevelopment and development of certain apartment communities, pursuant to financing or other arrangements. As of September 30, 2018, our commitments related to these capital activities totaled approximately $130.6 million, most of which we expect to incur during the next 12 months.

We enter into certain commitments for future purchases of goods and services in connection with the operations of our apartment communities. Those commitments generally have terms of one year or less and reflect expenditure levels comparable to our historical expenditures.

Tax Credit Arrangements

For various partnerships served by our Asset Management business prior to its sale, we were required to manage the partnerships and related apartment communities in compliance with various laws, regulations and contractual provisions that apply to historic and low-income housing tax credit syndication arrangements. In some instances, noncompliance with applicable requirements could result in projected tax benefits not being realized by the limited partners in these partnerships and would require a refund or reduction of investor capital contributions for actions taken during our ownership. In connection with the July 25, 2018, sale of our Asset Management business, the performance obligation related to continuing compliance was assumed by the purchaser.

Income Taxes

In 2014, the Internal Revenue Service initiated an audit of the Aimco Operating Partnership’s 2011 and 2012 tax years. We do not believe the audit will have any material effect on our unrecognized tax benefits, financial condition or results of operations.

Legal Matters

In addition to the matters described below, we are a party to various legal actions and administrative proceedings arising in the ordinary course of business, some of which are covered by our general liability insurance program, and none of which we expect to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

Environmental

Various federal, state and local laws subject apartment community owners or operators to liability for management, and the costs of removal or remediation, of certain potentially hazardous materials that may be present in the land or buildings of an apartment community. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the presence of such materials. The presence of, or the failure to manage or remediate properly, these materials may adversely affect occupancy at such apartment communities as well as the ability to sell or finance such apartment communities. In addition, governmental agencies may bring claims for costs associated with investigation and remediation actions. Moreover, private plaintiffs may potentially make claims for investigation and remediation costs they incur or for personal injury, disease, disability or other infirmities related to the alleged presence of hazardous materials. In addition to potential environmental liabilities or costs associated with our current apartment communities, we may also be responsible for such liabilities or costs associated with communities we acquire or manage in the future, or apartment communities we no longer own or operate.

We are engaged in discussions with the Environmental Protection Agency, or EPA, and the Indiana Department of Environmental Management, or IDEM, regarding contaminated groundwater in a residential area in the vicinity of an Indiana apartment community that has not been owned by us since 2008. The contamination allegedly derives from a dry cleaner that operated on our former property, prior to our ownership. We have undertaken a voluntary remediation of the dry cleaner contamination under IDEM’s oversight, and in previous years accrued our share of the then-estimated cleanup and abatement costs. In 2016, EPA listed our former community and a number of residential communities in the vicinity on the National Priorities List, or NPL (i.e. as a Superfund site). In May 2018, we prevailed on our federal judicial appeal vacating the Superfund listing. We continue to work with EPA and IDEM to identify options for clean-up of the site. Although the outcome of these processes are uncertain, we do not expect their resolution to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

We also have been contacted by regulators and the current owner of a property in Lake Tahoe, California, regarding environmental issues allegedly stemming from the historic operation of a dry cleaner. An entity owned by us was the former general partner of a now-dissolved partnership that previously owned a site that was used for dry cleaning. That entity and the current property owner have been remediating the dry cleaner site since 2009, under the oversight of the Lahontan Regional Water Quality Control Board, or Lahontan. In May 2017, Lahontan issued a final cleanup and abatement order that names four potentially-responsible parties, acknowledges that there may be additional responsible parties, and requires the named parties to perform additional groundwater investigation and corrective actions with respect to onsite and offsite contamination. We are appealing the final order while simultaneously complying with it. Although the outcome of this process is uncertain, we do not expect its resolution to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

We have determined that our legal obligations to remove or remediate certain potentially hazardous materials may be conditional asset retirement obligations, as defined in GAAP. Except in limited circumstances where the asset retirement activities are expected to be performed in connection with a planned construction project or apartment community casualty, we believe that the fair value of our asset retirement obligations cannot be reasonably estimated due to significant uncertainties in the timing and manner of settlement of those obligations. Asset retirement obligations that are reasonably estimable as of September 30, 2018, are immaterial to our consolidated financial condition, results of operations and cash flows.

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Earnings per Share/Unit

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Earnings per Share/Unit

Earnings per Share and Unit

Aimco and the Aimco Operating Partnership calculate basic earnings per common share and basic earnings per common unit based on the weighted average number of shares of Common Stock and common partnership units and participating securities outstanding, and calculate diluted earnings per share and diluted earnings per unit taking into consideration dilutive common stock and common partnership unit equivalents and dilutive convertible securities outstanding during the period.

Our common stock and common partnership unit equivalents include options to purchase shares of Common Stock, which, if exercised, would result in Aimco’s issuance of additional shares and the Aimco Operating Partnership’s issuance to Aimco of additional common partnership units equal to the number of shares purchased under the options. These equivalents also include unvested total stockholder return, or TSR, restricted stock awards that do not meet the definition of participating securities, which would result in an increase in the number of common shares and common partnership units outstanding equal to the number of shares that vest. The dilutive effect of these securities was 0.2 million shares or units for the three and nine months ended September 30, 2018. The dilutive effect of these securities was 0.5 million shares or units for the three and nine months ended September 30, 2017. Securities with dilutive effect are included in the denominator for calculating diluted earnings per share and unit during these periods. There were 0.2 million potential shares and 0.2 million potential units not dilutive and excluded from the denominator for calculating diluted earnings per share and per unit, respectively, for both the three and nine months ended September 30, 2018 and 2017.

Our time-based restricted stock awards receive dividends similar to shares of Common Stock and common partnership units prior to vesting and our TSR long-term incentive partnership units receive a percentage of the distributions paid to common partnership units prior to vesting. These dividends and distributions are not forfeited if the awards fail to vest. Therefore, the unvested shares and units related to these awards are participating securities. The effect of participating securities is included in basic and diluted earnings per share and unit computations using the two-class method of allocating distributed and undistributed earnings when the two-class method is more dilutive than the treasury method. There were 0.3 million and 0.2 million unvested participating securities as of September 30, 2018 and 2017, respectively.

The Aimco Operating Partnership has various classes of preferred OP Units, which may be redeemed at the holders’ option. The Aimco Operating Partnership may redeem these units for cash, or at its option, shares of Common Stock. As of September 30, 2018, these preferred OP Units were potentially redeemable for approximately 2.3 million shares of Common Stock (based on the period end market price), or cash. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the preferred OP Units, subject to limited exceptions. Accordingly, we have excluded these securities from earnings per share and unit computations and we expect to exclude them in future periods.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Recurring Fair Value Measurements

We measure at fair value on a recurring basis our investments in the securitization trust that holds certain of our property debt, which we classify as available for sale, or AFS, debt securities, which are classified within Level 2 of the GAAP fair value hierarchy.

Our investments in debt securities classified as AFS are presented within other assets in the accompanying condensed consolidated balance sheets. We hold several positions in the securitization trust that pay interest currently and we also hold the first loss position in the securitization trust, which accrues interest over the term of the investment. We are accreting the discount to the $100.9 million face value of the investments into interest income using the effective interest method over the remaining term of the investments, which, as of September 30, 2018, was approximately 2.7 years. Our amortized cost basis for these investments, which represents the original cost adjusted for interest accretion less interest payments received, was $82.1 million and $77.7 million at September 30, 2018 and December 31, 2017, respectively. We estimated the fair value of these investments to be $87.0 million and $82.8 million at September 30, 2018 and December 31, 2017, respectively.

We estimate the fair value of these investments using an income and market approach with primarily observable inputs, including yields and other information regarding similar types of investments, and adjusted for certain unobservable inputs specific to these investments. The fair value of the positions that pay interest currently typically moves in an inverse relationship with movements in interest rates. The fair value of the first loss position is primarily correlated to collateral quality and demand for similar subordinate commercial mortgage-backed securities.

Prior to the July 2018 sale of our Asset Management business, we consolidated certain partnerships served by our Asset Management business. These partnerships entered into interest rate swap agreements to limit exposure to interest rate risk on the partnerships’ debt by effectively converting the interest from a variable rate to a fixed rate. We estimated the fair value of interest rate swaps as of September 30, 2017, using an income approach with primarily observable inputs, including information regarding the hedged variable cash flows and forward yield curves relating to the variable interest rates on which the hedged cash flows are based. The fair value of these interest rate swaps was classified within Level 2 of the GAAP fair value hierarchy.

The following table sets forth a summary of the changes in fair value of these interest rate swaps (in thousands):

	Nine Months Ended September 30,
	2018			2017
Beginning balance	$	(1,795	)	$	(3,175	)
Realized losses included in interest expense	404			73
Realized losses on derecognition of interest rate swaps	1,115			273
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	276			1,076
Unrealized losses included in equity and partners’ capital	—			(280		)
Ending balance	$	—		$	(2,033	)

For the nine months ended September 30, 2018, realized losses on derecognition of interest rate swaps included in earnings represents previously unrealized losses related to interest rate swaps to which certain partnerships served by our Asset Management business were parties. Upon sale of our Asset Management business, the accumulated other comprehensive income related to the swaps was realized as a component of the gain on disposition. Please refer to Note 3 for further discussion of this transaction.

For the nine months ended September 30, 2017, realized losses on derecognition of interest rate swaps included in earnings represents previously unrealized losses related to an interest rate swap to which the partnership owning the final Napico property was a party, as described in Note 11 to our consolidated financial statements included in Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K.

Fair Value Disclosures

We believe that the carrying values of the consolidated amounts of cash and cash equivalents, receivables and payables approximate their fair values at September 30, 2018, and December 31, 2017, due to their relatively short-term nature and high probability of realization. The carrying value of the total indebtedness associated with our Real Estate portfolio approximated its estimated fair value at September 30, 2018 and December 31, 2017. We estimate the fair value of our consolidated debt using an income and market approach, including comparison of the contractual terms to observable and unobservable inputs such as market interest rate risk spreads, contractual interest rates, remaining periods to maturity, collateral quality and loan to value ratios on similarly encumbered apartment communities within our portfolio. We classify the fair value of debt within Level 3 of the GAAP valuation hierarchy based on the significance of certain of the unobservable inputs used to estimate its fair value.

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Business Segments

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Business Segments

Business Segments

Our chief executive officer, who is our chief operating decision maker, uses proportionate property net operating income to assess the operating performance of our apartment communities. Proportionate property net operating income is defined as our share of rental and other property revenue less our share of property operating expenses, including real estate taxes, for consolidated apartment communities we own and manage. Beginning in 2018, we exclude from rental and other property revenues the amount of utilities cost reimbursed by residents and reflect such amount as a reduction of the related utility expense within property operating expenses in our evaluation of segment results. In our condensed consolidated statements of operations, utility reimbursements are included in rental and other property revenues, in accordance with GAAP. The tables below have been revised to conform to this presentation.

Apartment communities are classified as either part of our Real Estate portfolio or, prior to the sale in July 2018, those owned through partnerships served by our Asset Management business. As of September 30, 2018, for segment performance evaluation, our Real Estate segment included 129 consolidated apartment communities with 36,339 apartment homes and excluded four apartment communities with 142 apartment homes that we neither manage nor consolidate.

Prior to the July 2018 sale of our Asset Management business, we consolidated certain partnerships in which we held nominal ownership positions. These partnerships own low-income housing tax credit apartment communities. Neither the results of operations nor the assets of these partnerships and apartment communities were quantitatively material; therefore, we have one reportable segment, Real Estate.

The following tables present the revenues, net operating income and income before gain on dispositions of our Real Estate segment on a proportionate basis and excluding amounts related to apartment communities sold as of September 30, 2018 for the three and nine months ended September 30, 2018 and 2017 (in thousands):

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Three months ended September 30, 2018:
Rental and other property revenues attributable to Real Estate	$	222,856	$	8,926	$	2,266		$	234,048
Rental and other property revenues of partnerships served by Asset Management business	—		—		5,022			5,022
Tax credit and transaction revenues	—		—		3,411			3,411
Total revenues	222,856		8,926		10,699			242,481
Property operating expenses attributable to Real Estate	62,863		8,405		6,986			78,254
Property operating expenses of partnerships served by Asset Management business	—		—		2,608			2,608
Other operating expenses not allocated to reportable segment (3)	—		—		114,665			114,665
Total operating expenses	62,863		8,405		124,259			195,527
Operating income	159,993		521		(113,560		)	46,954
Other items included in income before gain on dispositions (4)	—		—		(15,122		)	(15,122		)
Income before gain on dispositions	$	159,993	$	521	$	(128,682	)	$	31,832

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Three months ended September 30, 2017:
Rental and other property revenues attributable to Real Estate	$	203,935	$	8,155	$	21,618		$	233,708
Rental and other property revenues of partnerships served by Asset Management business	—		—		18,232			18,232
Tax credit and transaction revenues	—		—		2,695			2,695
Total revenues	203,935		8,155		42,545			254,635
Property operating expenses attributable to Real Estate	57,592		7,609		16,043			81,244
Property operating expenses of partnerships served by Asset Management business	—		—		8,872			8,872
Other operating expenses not allocated to reportable segment (3)	—		—		105,314			105,314
Total operating expenses	57,592		7,609		130,229			195,430
Operating income	146,343		546		(87,684		)	59,205
Other items included in income before gain on dispositions (4)	—		—		(36,828		)	(36,828		)
Income before gain on dispositions	$	146,343	$	546	$	(124,512	)	$	22,377

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Nine months ended September 30, 2018:
Rental and other property revenues attributable to Real Estate	$	643,656	$	25,903	$	21,012		$	690,571
Rental and other property revenues of partnerships served by Asset Management business	—		—		42,830			42,830
Tax credit and transaction revenues	—		—		6,987			6,987
Total revenues	643,656		25,903		70,829			740,388
Property operating expenses attributable to Real Estate	183,119		24,337		25,116			232,572
Property operating expenses of partnerships served by Asset Management business	—		—		20,865			20,865
Other operating expenses not allocated to reportable segment (3)	—		—		337,259			337,259
Total operating expenses	183,119		24,337		383,240			590,696
Operating income	460,537		1,566		(312,411		)	149,692
Other items included in income before gain on dispositions (4)	—		—		(65,560		)	(65,560		)
Income before gain on dispositions	$	460,537	$	1,566	$	(377,971	)	$	84,132

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Nine months ended September 30, 2017:
Rental and other property revenues attributable to Real Estate	$	589,349	$	35,542	$	61,748		$	686,639
Rental and other property revenues of partnerships served by Asset Management business	—		—		55,327			55,327
Tax credit and transaction revenues	—		—		8,242			8,242
Total revenues	589,349		35,542		125,317			750,208
Property operating expenses attributable to Real Estate	169,311		25,505		45,138			239,954
Property operating expenses of partnerships served by Asset Management business	—		—		26,458			26,458
Other operating expenses not allocated to reportable segment (3)	—		—		307,096			307,096
Total operating expenses	169,311		25,505		378,692			573,508
Operating income	420,038		10,037		(253,375		)	176,700
Other items included in income before gain on dispositions (4)	—		—		(116,691		)	(116,691		)
Income before gain on dispositions	$	420,038	$	10,037	$	(370,066	)	$	60,009

(1) Represents adjustments for the noncontrolling interests in consolidated real estate partnerships’ share of the results of consolidated apartment communities in our Real Estate segment, which are included in the related consolidated amounts, but excluded from proportionate property net operating income for our segment evaluation. Also includes the reclassification of utility reimbursements from revenues to property operating expenses for the purpose of evaluating segment results. Utility reimbursements are included in rental and other property revenues in our condensed consolidated statements of operations prepared in accordance with GAAP.

(2) Includes the operating results of apartment communities sold during the periods shown or held for sale at the end of the period, if any, and the operating results of apartment communities owned by consolidated partnerships served by our Asset Management business prior to its sale in July 2018. Corporate and Amounts Not Allocated to Reportable Segment also includes property management expenses and casualty gains and losses, which are included in consolidated property operating expenses and are not part of our segment performance measure.

(3) Other operating expenses not allocated to reportable segment consists of depreciation and amortization, general and administrative expenses and other operating expenses, which are not included in our measure of segment performance.

(4) Other items included in income before gain on dispositions primarily consists of interest and income tax benefit.

The assets of our reportable segment and the consolidated assets not allocated to our segment are as follows (in thousands):

	September 30, 2018		December 31, 2017
Real Estate	$	5,861,647	$	5,391,816
Corporate and other assets (1)	323,374		687,224
Total consolidated assets	$	6,185,021	$	6,079,040

(1) Includes the assets not allocated to our reportable segment, primarily corporate assets, and as of December 31, 2017, assets of apartment communities and the Asset Management business, which were sold as of September 30, 2018.

For the nine months ended September 30, 2018 and 2017, capital additions related to our Real Estate segment totaled $241.6 million and $243.3 million, respectively.

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Variable Interest Entities

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Variable Interest Entities

Variable Interest Entities

Generally, a variable interest entity, or VIE, is a legal entity in which the equity investors do not have the characteristics of a controlling financial interest or the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. A limited partnership is considered a VIE when the majority of the limited partners unrelated to the general partner possess neither the right to remove the general partner without cause, nor certain rights to participate in the decisions that most significantly affect the financial results of the partnership. In determining whether we are the primary beneficiary of a VIE, we consider qualitative and quantitative factors, including, but not limited to: which activities most significantly impact the VIE’s economic performance and which party controls such activities; the amount and characteristics of our investment; the obligation or likelihood for us or other investors to provide financial support; and the similarity with and significance to our business activities and the business activities of the other investors. Significant judgments related to these determinations include estimates about the current and future fair values and performance of real estate held by these VIEs and general market conditions.

Aimco consolidates the Aimco Operating Partnership, which is a VIE for which Aimco is the primary beneficiary. Aimco, through the Aimco Operating Partnership, consolidates all VIEs for which the Aimco Operating Partnership is the primary beneficiary.

All of the VIEs we consolidate own interests in one or more apartment communities. VIEs that own apartment communities we classify as part of our Real Estate segment are typically structured to generate a return for their partners through the operation and ultimate sale of the communities. We are the primary beneficiary in the limited partnerships in which we are the sole decision maker and have a substantial economic interest. The table below summarizes information regarding VIEs consolidated by the Aimco Operating Partnership:

As described in Note 3, we sold our Asset Management business in July 2018, including the nominal ownership interest we held in partnerships served by this business.

	September 30, 2018	December 31, 2017
Real Estate portfolio:
VIEs with interests in apartment communities	9	14
Apartment communities owned by VIEs	9	14
Apartment homes in communities owned by VIEs	3,592	4,321
Consolidated partnerships served by Asset Management business:
VIEs with interests in apartment communities	—	49
Apartment communities owned by VIEs	—	37
Apartment homes in communities owned by VIEs	—	5,893

Assets of the Aimco Operating Partnership’s consolidated VIEs must first be used to settle the liabilities of such consolidated VIEs. These consolidated VIEs’ creditors do not have recourse to the general credit of the Aimco Operating Partnership. Assets and liabilities of consolidated VIEs are summarized in the table below (in thousands):

	September 30, 2018		December 31, 2017
Real Estate portfolio:
Assets
Net real estate	$	481,390	$	529,898
Cash and cash equivalents	13,193		16,111
Restricted cash	7,295		4,798
Liabilities
Non-recourse property debt secured by Real Estate communities, net	339,278		412,205
Accrued liabilities and other	17,096		10,623
Consolidated partnerships served by Asset Management business:
Assets
Real estate, net	—		215,580
Cash and cash equivalents	—		15,931
Restricted cash	—		30,107
Liabilities
Non-recourse property debt	—		220,356
Accrued liabilities and other	—		20,241

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Basis of Presentation and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted in accordance with such rules and regulations, although management believes the disclosures are adequate to prevent the information presented from being misleading. In the opinion of management, all adjustments (consisting of normal recurring items) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2018, are not necessarily indicative of the results that may be expected for the year ending December 31, 2018.

The balance sheets of Aimco and the Aimco Operating Partnership at December 31, 2017, have been derived from their respective audited financial statements at that date, but do not include all of the information and disclosures required by GAAP for complete financial statements. For further information, refer to the financial statements and notes thereto included in Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K for the year ended December 31, 2017. Except where indicated, the footnotes refer to both Aimco and the Aimco Operating Partnership.

Principles of Consolidation

Principles of Consolidation

Aimco’s accompanying condensed consolidated financial statements include the accounts of Aimco, the Aimco Operating Partnership, and their consolidated subsidiaries. The Aimco Operating Partnership’s condensed consolidated financial statements include the accounts of the Aimco Operating Partnership and its consolidated subsidiaries (see Note 8). All significant intercompany balances and transactions have been eliminated in consolidation.

Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are reflected in Aimco’s accompanying condensed consolidated balance sheets as noncontrolling interests in the Aimco Operating Partnership. Interests in partnerships consolidated by the Aimco Operating Partnership that are held by third parties are reflected in our accompanying condensed consolidated balance sheets as noncontrolling interests in consolidated real estate partnerships.

Temporary Equity and Partners' Capital

The preferred OP Units may be redeemed at the holders’ option (as further discussed in Note 5), and are therefore presented within temporary equity in Aimco’s condensed consolidated balance sheets and within temporary capital in the Aimco Operating Partnership’s condensed consolidated balance sheets (in thousands).

Use of Estimates

Use of Estimates

The preparation of our condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts included in the financial statements and accompanying notes thereto. Actual results could differ from those estimates.

Accounting Pronouncements Adopted in the Current Year

Accounting Pronouncements Adopted in the Current Year

Effective January 1, 2018, we adopted a new standard issued by the Financial Accounting Standards Board, or FASB, that affects accounting for revenue. Under this new standard, revenue is generally recognized when an entity has transferred control of goods or services to a customer for an amount reflecting the consideration to which the entity expects to be entitled for such exchange. In evaluating the contracts we enter into in the ordinary course of business, substantially all of our revenue is generated by lease agreements, which will continue to be subject to existing GAAP until 2019, when we will adopt the new lease accounting standard.

The new revenue standard also introduced new guidance for accounting for other income, including how we measure gains or losses on the sale of real estate. We adopted the new standard using the modified retrospective transition method effective January 1, 2018, with no effect on our results of operations or financial position.

Effective January 1, 2018, we also adopted new standards issued by the FASB that affect the presentation and disclosure of the statements of cash flows. We are now required to present combined inflows and outflows of cash, cash equivalents, and restricted cash in the consolidated statement of cash flows. Previously our consolidated statements of cash flows presented transfers between restricted and unrestricted cash accounts as operating, financing, and investing cash activities depending upon the required or intended purpose for the restricted funds. The new guidance also requires debt prepayment and other extinguishment related payments to be classified as financing activities. We previously classified such payments as operating activities.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In 2018, the Securities Exchange Commission, or SEC, amended its rules to eliminate, modify, or integrate into other SEC requirements certain disclosure rules. The amendments are intended to simplify compliance without significantly changing the total mix of information provided to investors and are generally effective on November 5, 2018. The amendments remove the SEC rule that requires REITs to present gain or loss on the sale of real estate, net of income tax, in the statement of operations. Consistent with the SEC’s historical requirements, we present gain or loss on dispositions of real estate below continuing operations and net of tax. Accordingly we will recast our consolidated statements of operations to present gain or loss on dispositions of real estate as a component of income before income taxes beginning in our financial statements for the year ending December 31, 2018. Additionally, SEC rules currently require changes in equity subsequent to the prior year-end as either a separate financial statement or in the notes to interim financial statements. We present changes in equity within a footnote to our interim condensed consolidated financial statements in accordance with the SEC rule. The amendments create a requirement to report changes in equity and dividends per share in interim periods as a separate financial statement or within a footnote on a comparative basis for both quarter-to-date and year-to-date periods presented. This disclosure is required for interim financial statements of quarters beginning after the effective date; therefore, we will present comparative interim statements of stockholders equity beginning in our condensed consolidated financial statements for the three months ending March 31, 2019.

In 2018, the FASB amended the new standard on lease accounting, which is effective for us on January 1, 2019. The amendment introduced an optional transition method, which allows the recognition of a cumulative-effect adjustment in the period of adoption and for prior reporting periods to remain as originally presented. Additionally, the amendment introduced a practical expedient for lessors to account for lease and nonlease components as a single component if the timing and pattern of transfer of components are the same, and the lease component would be classified as an operating lease if accounted for separately. We have substantially completed our evaluation of the amendment and expect to elect both the transition option and lessor practical expedient concurrent with our adoption of the standard. We do not anticipate significant changes in the timing of income from our leases with residents. However, in circumstances where we are a lessee, primarily a few ground leases and leases for corporate office space, we will be required to recognize right of use assets and related lease liabilities on our consolidated balance sheets. We are in the process of determining the amount of the right of use assets and related lease liabilities that will be recognized upon adoption.

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Basis of Presentation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Equity [Line Items]

Reconciliation of consolidated temporary equity accounts

The following table presents a reconciliation of the Aimco Operating Partnership’s preferred OP Units from December 31, 2017 to September 30, 2018. The preferred OP Units may be redeemed at the holders’ option (as further discussed in Note 5), and are therefore presented within temporary equity in Aimco’s condensed consolidated balance sheets and within temporary capital in the Aimco Operating Partnership’s condensed consolidated balance sheets (in thousands).

Balance, December 31, 2017	$	101,537
Distributions to holders of preferred OP Units	(5,805		)
Redemption of preferred OP Units and other	(217		)
Net income attributable to preferred OP Units	5,805
Balance, September 30, 2018	$	101,320

Reconciliation of consolidated permanent equity accounts

The following table presents a reconciliation of Aimco’s consolidated permanent equity accounts from December 31, 2017 to September 30, 2018 (in thousands):

	Aimco Equity			Noncontrolling interests in consolidated real estate partnerships			Common noncontrolling interests in Aimco Operating Partnership			Total Equity
Balance, December 31, 2017	$	1,663,144		$	(1,716	)	$	(5,675	)	$	1,655,753
Issuance of common OP Units	—			—			50,151			50,151
Dividends on Preferred Stock	(6,445		)	—			—			(6,445		)
Dividends and distributions on Common Stock and common OP Units	(179,351		)	(7,934		)	(9,402		)	(196,687		)
Redemptions of common OP Units	—			—			(8,458		)	(8,458		)
Amortization of stock-based compensation cost	6,285			—			1,236			7,521
Effect of changes in ownership for consolidated entities	(18,137		)	—			8,036			(10,101		)
Change in accumulated other comprehensive loss	1,247			—			72			1,319
Other	119			—			—			119
Net income	658,820			8,045			34,093			700,958
Balance, September 30, 2018	$	2,125,682		$	(1,605	)	$	70,053		$	2,194,130

Revisions to net cash flows from operating, investing, and financing activities

We have revised our condensed consolidated statements of cash flows for the nine months ended September 30, 2017 to conform to this presentation, and the effect of the revisions to net cash flows from operating, investing, and financing activities as previously reported for the nine months ended September 30, 2017 are summarized in the following table (in thousands):

	As Previously Reported			Adjustments			As Revised
Net cash provided by operating activities	$	285,025		$	10,124		$	295,149
Net cash used in investing activities	(274,139		)	(1,746		)	(275,885		)
Net cash used in financing activities	(16,449		)	(369		)	(16,818		)

AIMCO PROPERTIES, L.P [Member]

Schedule of Equity [Line Items]

Reconciliation of consolidated permanent equity accounts

The following table presents a reconciliation of the consolidated partners’ capital balances in permanent capital that are attributable to the Aimco Operating Partnership from December 31, 2017 to September 30, 2018 (in thousands):

	Partners’ capital  attributable to the Aimco Operating Partnership
Balance, December 31, 2017	$	1,657,469
Issuance of common OP Units	50,151
Distributions to preferred units held by Aimco	(6,445		)
Distributions to common units held by Aimco	(179,351		)
Distributions to common units held by Limited Partners	(9,402		)
Redemption of common OP Units	(8,458		)
Amortization of Aimco stock-based compensation cost	7,521
Effect of changes in ownership for consolidated entities	(10,101		)
Change in accumulated other comprehensive loss	1,319
Other	119
Net income	692,913
Balance, September 30, 2018	$	2,195,735

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table sets forth a summary of the changes in fair value of these interest rate swaps (in thousands):

	Nine Months Ended September 30,
	2018			2017
Beginning balance	$	(1,795	)	$	(3,175	)
Realized losses included in interest expense	404			73
Realized losses on derecognition of interest rate swaps	1,115			273
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	276			1,076
Unrealized losses included in equity and partners’ capital	—			(280		)
Ending balance	$	—		$	(2,033	)

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Business Segments (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Summary information for the reportable segments

The following tables present the revenues, net operating income and income before gain on dispositions of our Real Estate segment on a proportionate basis and excluding amounts related to apartment communities sold as of September 30, 2018 for the three and nine months ended September 30, 2018 and 2017 (in thousands):

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Three months ended September 30, 2018:
Rental and other property revenues attributable to Real Estate	$	222,856	$	8,926	$	2,266		$	234,048
Rental and other property revenues of partnerships served by Asset Management business	—		—		5,022			5,022
Tax credit and transaction revenues	—		—		3,411			3,411
Total revenues	222,856		8,926		10,699			242,481
Property operating expenses attributable to Real Estate	62,863		8,405		6,986			78,254
Property operating expenses of partnerships served by Asset Management business	—		—		2,608			2,608
Other operating expenses not allocated to reportable segment (3)	—		—		114,665			114,665
Total operating expenses	62,863		8,405		124,259			195,527
Operating income	159,993		521		(113,560		)	46,954
Other items included in income before gain on dispositions (4)	—		—		(15,122		)	(15,122		)
Income before gain on dispositions	$	159,993	$	521	$	(128,682	)	$	31,832

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Three months ended September 30, 2017:
Rental and other property revenues attributable to Real Estate	$	203,935	$	8,155	$	21,618		$	233,708
Rental and other property revenues of partnerships served by Asset Management business	—		—		18,232			18,232
Tax credit and transaction revenues	—		—		2,695			2,695
Total revenues	203,935		8,155		42,545			254,635
Property operating expenses attributable to Real Estate	57,592		7,609		16,043			81,244
Property operating expenses of partnerships served by Asset Management business	—		—		8,872			8,872
Other operating expenses not allocated to reportable segment (3)	—		—		105,314			105,314
Total operating expenses	57,592		7,609		130,229			195,430
Operating income	146,343		546		(87,684		)	59,205
Other items included in income before gain on dispositions (4)	—		—		(36,828		)	(36,828		)
Income before gain on dispositions	$	146,343	$	546	$	(124,512	)	$	22,377

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Nine months ended September 30, 2018:
Rental and other property revenues attributable to Real Estate	$	643,656	$	25,903	$	21,012		$	690,571
Rental and other property revenues of partnerships served by Asset Management business	—		—		42,830			42,830
Tax credit and transaction revenues	—		—		6,987			6,987
Total revenues	643,656		25,903		70,829			740,388
Property operating expenses attributable to Real Estate	183,119		24,337		25,116			232,572
Property operating expenses of partnerships served by Asset Management business	—		—		20,865			20,865
Other operating expenses not allocated to reportable segment (3)	—		—		337,259			337,259
Total operating expenses	183,119		24,337		383,240			590,696
Operating income	460,537		1,566		(312,411		)	149,692
Other items included in income before gain on dispositions (4)	—		—		(65,560		)	(65,560		)
Income before gain on dispositions	$	460,537	$	1,566	$	(377,971	)	$	84,132

	Real Estate		Proportionate and Other Adjustments (1)		Corporate and Amounts Not Allocated to Reportable Segment (2)			Consolidated
Nine months ended September 30, 2017:
Rental and other property revenues attributable to Real Estate	$	589,349	$	35,542	$	61,748		$	686,639
Rental and other property revenues of partnerships served by Asset Management business	—		—		55,327			55,327
Tax credit and transaction revenues	—		—		8,242			8,242
Total revenues	589,349		35,542		125,317			750,208
Property operating expenses attributable to Real Estate	169,311		25,505		45,138			239,954
Property operating expenses of partnerships served by Asset Management business	—		—		26,458			26,458
Other operating expenses not allocated to reportable segment (3)	—		—		307,096			307,096
Total operating expenses	169,311		25,505		378,692			573,508
Operating income	420,038		10,037		(253,375		)	176,700
Other items included in income before gain on dispositions (4)	—		—		(116,691		)	(116,691		)
Income before gain on dispositions	$	420,038	$	10,037	$	(370,066	)	$	60,009

(1) Represents adjustments for the noncontrolling interests in consolidated real estate partnerships’ share of the results of consolidated apartment communities in our Real Estate segment, which are included in the related consolidated amounts, but excluded from proportionate property net operating income for our segment evaluation. Also includes the reclassification of utility reimbursements from revenues to property operating expenses for the purpose of evaluating segment results. Utility reimbursements are included in rental and other property revenues in our condensed consolidated statements of operations prepared in accordance with GAAP.

(2) Includes the operating results of apartment communities sold during the periods shown or held for sale at the end of the period, if any, and the operating results of apartment communities owned by consolidated partnerships served by our Asset Management business prior to its sale in July 2018. Corporate and Amounts Not Allocated to Reportable Segment also includes property management expenses and casualty gains and losses, which are included in consolidated property operating expenses and are not part of our segment performance measure.

(3) Other operating expenses not allocated to reportable segment consists of depreciation and amortization, general and administrative expenses and other operating expenses, which are not included in our measure of segment performance.

(4) Other items included in income before gain on dispositions primarily consists of interest and income tax benefit.

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

The assets of our reportable segment and the consolidated assets not allocated to our segment are as follows (in thousands):

	September 30, 2018		December 31, 2017
Real Estate	$	5,861,647	$	5,391,816
Corporate and other assets (1)	323,374		687,224
Total consolidated assets	$	6,185,021	$	6,079,040

(1) Includes the assets not allocated to our reportable segment, primarily corporate assets, and as of December 31, 2017, assets of apartment communities and the Asset Management business, which were sold as of September 30, 2018.

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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Variable Interest Entities

The table below summarizes information regarding VIEs consolidated by the Aimco Operating Partnership:

As described in Note 3, we sold our Asset Management business in July 2018, including the nominal ownership interest we held in partnerships served by this business.

	September 30, 2018	December 31, 2017
Real Estate portfolio:
VIEs with interests in apartment communities	9	14
Apartment communities owned by VIEs	9	14
Apartment homes in communities owned by VIEs	3,592	4,321
Consolidated partnerships served by Asset Management business:
VIEs with interests in apartment communities	—	49
Apartment communities owned by VIEs	—	37
Apartment homes in communities owned by VIEs	—	5,893

Assets of the Aimco Operating Partnership’s consolidated VIEs must first be used to settle the liabilities of such consolidated VIEs. These consolidated VIEs’ creditors do not have recourse to the general credit of the Aimco Operating Partnership. Assets and liabilities of consolidated VIEs are summarized in the table below (in thousands):

	September 30, 2018		December 31, 2017
Real Estate portfolio:
Assets
Net real estate	$	481,390	$	529,898
Cash and cash equivalents	13,193		16,111
Restricted cash	7,295		4,798
Liabilities
Non-recourse property debt secured by Real Estate communities, net	339,278		412,205
Accrued liabilities and other	17,096		10,623
Consolidated partnerships served by Asset Management business:
Assets
Real estate, net	—		215,580
Cash and cash equivalents	—		15,931
Restricted cash	—		30,107
Liabilities
Non-recourse property debt	—		220,356
Accrued liabilities and other	—		20,241

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Organization (Details Textual)	9 Months Ended
	Sep. 30, 2018 community Units Property shares
Organization [Line Items]
Common partnership units and equivalents outstanding | shares	157,352,109
Percentage of the Aimco Operating Partnership's common partnership units and equivalents owned by Aimco	94.60%
AIMCO PROPERTIES, L.P [Member]
Organization [Line Items]
Common partnership units and equivalents outstanding | shares	166,384,727
Aimco Real Estate [Member] | Partially Owned Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	133
Number of apartment homes in apartment communities | Units	36,481
Aimco Real Estate [Member] | Wholly And Partially Owned Consolidated Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	129
Number of apartment homes in apartment communities | Units	36,339
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Aimco Real Estate [Member] | Wholly And Partially Owned Consolidated Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	4
Number of apartment homes in apartment communities | Units	1,334
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Hunters Point Affordable Apartment Communities [Member] | Wholly And Partially Owned Consolidated Properties [Member]
Organization [Line Items]
Number of apartment communities | community	4

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Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 104,299	$ 142,541	$ 133,596	$ 131,150

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Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, December 31, 2017	$ 101,537
Balance, September 30, 2018	101,320
AIMCO PROPERTIES, L.P [Member]
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance, December 31, 2017	101,537
Distributions to holders of preferred OP Units	(5,805)
Redemption of preferred OP Units and other	(217)
Net income attributable to preferred OP Units	5,805
Balance, September 30, 2018	$ 101,320

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Basis of Presentation and Summary of Significant Accounting Policies (Details 1) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, December 31, 2017	$ 1,655,753
Common units issued during period, value	50,151
Dividends on Preferred Stock	(6,445)
Dividends and distributions on Common Stock and common OP Units	(196,687)
Redemptions of common OP Units	(8,458)
Amortization of stock-based compensation cost	7,521
Effect of changes in ownership for consolidated entities	(10,101)
Change in accumulated other comprehensive loss	1,319
Other	119
Net income	700,958
Balance, September 30, 2018	2,194,130
Aimco Equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, December 31, 2017	1,663,144
Dividends on Preferred Stock	(6,445)
Dividends and distributions on Common Stock and common OP Units	(179,351)
Amortization of stock-based compensation cost	6,285
Effect of changes in ownership for consolidated entities	(18,137)
Change in accumulated other comprehensive loss	1,247
Other	119
Net income	658,820
Balance, September 30, 2018	2,125,682
Noncontrolling Interests in Consolidated Real Estate Partnerships [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, December 31, 2017	(1,716)
Dividends and distributions on Common Stock and common OP Units	(7,934)
Net income	8,045
Balance, September 30, 2018	(1,605)
Common Noncontrolling Interests in Aimco Operating Partnership [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, December 31, 2017	(5,675)
Common units issued during period, value	50,151
Dividends and distributions on Common Stock and common OP Units	(9,402)
Redemptions of common OP Units	(8,458)
Amortization of stock-based compensation cost	1,236
Effect of changes in ownership for consolidated entities	8,036
Change in accumulated other comprehensive loss	72
Net income	34,093
Balance, September 30, 2018	$ 70,053

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Basis of Presentation and Summary of Significant Accounting Policies (Details 2) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Increase (Decrease) in Partners' Capital [Roll Forward]
Common units issued during period, value	$ 50,151
Redemption of common OP Units	(8,458)
Amortization of Aimco stock-based compensation cost	7,521
Effect of changes in ownership for consolidated entities	(10,101)
Change in accumulated other comprehensive loss	1,319
Other	119
Net income	700,958
AIMCO Properties, LP [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, December 31, 2017	1,657,469
Balance, September 30, 2018	2,195,735
AIMCO Properties, LP [Member] | Partners Capital [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, December 31, 2017	1,657,469
Common units issued during period, value	50,151
Distributions to preferred units held by Aimco	(6,445)
Distributions to common units held by Aimco	(179,351)
Distributions to common units held by Limited Partners	(9,402)
Redemption of common OP Units	(8,458)
Amortization of Aimco stock-based compensation cost	7,521
Effect of changes in ownership for consolidated entities	(10,101)
Change in accumulated other comprehensive loss	1,319
Other	119
Net income	692,913
Balance, September 30, 2018	$ 2,195,735

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Basis of Presentation and Summary of Significant Accounting Policies (Details 3) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	$ 302,926	$ 295,149
Net cash used in investing activities	239,122	(275,885)
Net Cash Provided by (Used in) Financing Activities	$ (580,290)	(16,818)
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		285,025
Net cash used in investing activities		(274,139)
Net Cash Provided by (Used in) Financing Activities		(16,449)
Accounting Standards Update 2016-18 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		10,124
Net cash used in investing activities		(1,746)
Net Cash Provided by (Used in) Financing Activities		$ (369)

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Significant Transactions, Dispositions of Apartment Communities and Assets Held for Sale (Details Textual) $ / shares in Units, ft² in Thousands, $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) ft² community Units Property shares	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) ft² community Units Property	Sep. 30, 2017 USD ($)	May 01, 2018 Property $ / shares	Dec. 31, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncontrolling Interest in Limited Partnerships	$ (1,605)		$ (1,605)			$ (1,716)
Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes	572,085	$ (233)	622,631	$ 881
Assets	6,185,021		6,185,021			6,079,040
Liabilities	$ 3,889,571		$ 3,889,571			$ 4,321,750
Wholly And Partially Owned Consolidated Properties [Member] | Assets Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment communities | Property	1		1
Bent Tree Apartments - Fairfax County, Virginia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total fair value allocated to land	$ 47,000		$ 47,000
Total fair value allocated to building and improvements	113,000		113,000
Total fair value allocated to other items	$ 1,000		1,000
Payments to acquire and develop real estate			$ 160,000
Number of apartment homes in apartment communities | Units	748		748
Capitalized asset acquisition costs			$ 1,000
2018 Philadelphia Acquisition Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total fair value allocated to land	$ 14,100		14,100
Total fair value allocated to building and improvements	289,700		289,700
Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Intangible Assets	8,300		8,300
Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Liabilities	$ 12,300		$ 12,300
Number of apartment homes in apartment communities | Units	665		665
Area of office and retail space acquired (in square feet) | ft²	153		153
Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Non-Recourse Property Debt	$ 208,900		$ 208,900
Common units issued during period | shares	1.2
Asset Acquisition, Share Price | $ / shares					$ 41.08
Capitalized asset acquisition costs			6,400
Number of apartment communities | Property					4
La Jolla Cove [Member] | Wholly And Partially Owned Consolidated Properties [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notional value of seller financing provided	$ 48,600		48,600
Net cash proceeds from the sale of real estate with seller financing provided			$ 5,000
Hunters Point Affordable Apartment Communities [Member] | Wholly And Partially Owned Consolidated Properties [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment communities | community	4		4
Aimco Real Estate [Member] | Wholly And Partially Owned Consolidated Properties [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes in apartment communities | Units	36,339		36,339
Number of apartment communities | Property	129		129
Aimco Real Estate [Member] | Wholly And Partially Owned Consolidated Properties [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes in apartment communities | Units	1,334		1,334
Gain on dispositions of real estate, applicable income taxes			$ 54,100
Net proceeds to Aimco from the sale of real estate			230,100
Gain on dispositions of real estate			173,200
Gross proceeds from sale of real estate			$ 242,300
Number of apartment communities | Property	4		4
Asset Management [Member] | Wholly And Partially Owned Consolidated Properties [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes			$ 448,200
Asset Management [Member] | Wholly And Partially Owned Consolidated Properties [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds to Aimco from the sale of real estate			512,200
Gross proceeds from sale of real estate			$ 590,000

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Commitments and Contingencies (Details Textual) $ in Millions	1 Months Ended	9 Months Ended
	May 31, 2017 parties	Sep. 30, 2018 USD ($)
Long-term Purchase Commitment [Line Items]
Number of potentially responsible parties, environmental remediation | parties	4
Commitments related to development, redevelopment and capital improvement activities [Member]
Long-term Purchase Commitment [Line Items]
Commitments related to capital spending activities | $		$ 130.6
Time Period of Long-term Purchase Commitment		12 months
Maximum [Member] | Commitments related to operations [Member]
Long-term Purchase Commitment [Line Items]
Time Period of Long-term Purchase Commitment		1 year

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Earnings per Share/Unit (Details Textual) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive potential common shares/units (in shares)	0.2	0.5	0.2	0.5
Antidilutive securities excluded from the denominator for calculating dilutive earnings per share and per unit (in shares)	0.2	0.2	0.2	0.2
Participating securities outstanding (in shares)	0.3	0.2	0.3	0.2
Preferred noncontrolling interests in Aimco Operating Partnership	$ 101,320		$ 101,320		$ 101,537
Number of shares potentially redeemable for (in shares)	2.3		2.3
AIMCO Properties, LP [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive potential common shares/units (in shares)	0.2	0.5	0.2	0.5
Antidilutive securities excluded from the denominator for calculating dilutive earnings per share and per unit (in shares)	0.2	0.2	0.2	0.2
Preferred noncontrolling interests in Aimco Operating Partnership	$ 101,320		$ 101,320		$ 101,537

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Fair Value Measurements (Details) - Interest Rate Swap [Member] - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 404	$ 73
Fair Value Assets and Liabilities Measured on Recurring Basis Fair value and input reconciliation [Roll Forward]
Cash flow hedge fair value, beginning balance	(1,795)	(3,175)
Realized losses on derecognition of interest rate swaps	1,115	273
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	276	1,076
Unrealized losses included in equity and partners’ capital	0	(280)
Cash flow hedge fair value, ending balance	$ 0	$ (2,033)

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Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Face amount of investment in available-for-sale debt securities	$ 100,900
Excepted remaining term of available for sale securities	2 years 8 months
Amortized cost of the investment in available-for-sale debt securities	$ 82,100	$ 77,700
Available-for-sale Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities available-for-sale, fair value disclosure	87,000	82,800
Aimco Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of consolidated debt	3,600,000
Total indebtedness associated with Real Estate portfolio	3,646,789	3,861,770
Non-recourse property debt, net	3,646,789	3,545,109
Asset Management [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-recourse property debt, net	$ 0	$ 227,141

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Business Segments (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($) Units Property Segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 Units Property
Business Segments (Textual) [Abstract]
Number of reportable segments | Segment	1
Operating Segments [Member] | Aimco Real Estate [Member]
Business Segments (Textual) [Abstract]
Capital additions related to segments | $	$ 241.6	$ 243.3
Partially Owned Properties [Member] | Aimco Real Estate [Member]
Business Segments (Textual) [Abstract]
Number of owned and managed apartment communities in segments | Property	133
Number of apartment homes in apartment communities | Units	36,481
Wholly And Partially Owned Consolidated Properties [Member] | Aimco Real Estate [Member]
Business Segments (Textual) [Abstract]
Number of owned and managed apartment communities in segments | Property	129
Number of apartment homes in apartment communities | Units	36,339
Unconsolidated Properties [Member] | Aimco Real Estate [Member]
Business Segments (Textual) [Abstract]
Number of owned and managed apartment communities in segments | Property	4
Number of apartment homes in apartment communities | Units	142
Aimco Real Estate [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Business Segments (Textual) [Abstract]
Number of owned and managed apartment communities in segments | Property	9		14
Number of apartment homes in apartment communities | Units	3,592		4,321

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Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Summary information for the reportable segments
Tax credit and transaction revenues	$ 3,411	$ 2,695	$ 6,987	$ 8,242
Total revenues	242,481	254,635	740,388	750,208
Depreciation and amortization	96,406	92,513	286,439	268,836
General and administrative expenses	12,479	10,529	37,196	31,599
Other operating expenses not allocated to reportable segment (3)	114,665	105,314	337,259	307,096
Total operating expenses	195,527	195,430	590,696	573,508
Net operating income (loss)	46,954	59,205	149,692	176,700
Other Items included in income before gain on dispositions (4)	(15,122)	(36,828)	(65,560)	(116,691)
Income before gain (loss) on dispositions	31,832	22,377	84,132	60,009
Aimco Real Estate [Member]
Summary information for the reportable segments
Rental and other property revenues	234,048	233,708	690,571	686,639
Property operating expenses	78,254	81,244	232,572	239,954
Operating Segments [Member] | Aimco Real Estate [Member]
Summary information for the reportable segments
Rental and other property revenues	222,856	203,935	643,656	589,349
Total revenues	222,856	203,935	643,656	589,349
Property operating expenses	62,863	57,592	183,119	169,311
Total operating expenses	62,863	57,592	183,119	169,311
Net operating income (loss)	159,993	146,343	460,537	420,038
Income before gain (loss) on dispositions	159,993	146,343	460,537	420,038
Segment Reconciling Items [Member]
Summary information for the reportable segments
Total revenues	8,926	8,155	25,903	35,542
Total operating expenses	8,405	7,609	24,337	25,505
Net operating income (loss)	521	546	1,566	10,037
Income before gain (loss) on dispositions	521	546	1,566	10,037
Segment Reconciling Items [Member] | Aimco Real Estate [Member]
Summary information for the reportable segments
Rental and other property revenues	8,926	8,155	25,903	35,542
Property operating expenses	8,405	7,609	24,337	25,505
Corporate Non-Segment [Member]
Summary information for the reportable segments
Tax credit and transaction revenues	3,411	2,695	6,987	8,242
Total revenues	10,699	42,545	70,829	125,317
Other operating expenses not allocated to reportable segment (3)	114,665	105,314	337,259	307,096
Total operating expenses	124,259	130,229	383,240	378,692
Net operating income (loss)	(113,560)	(87,684)	(312,411)	(253,375)
Other Items included in income before gain on dispositions (4)	(15,122)	(36,828)	(65,560)	(116,691)
Income before gain (loss) on dispositions	(128,682)	(124,512)	(377,971)	(370,066)
Corporate Non-Segment [Member] | Aimco Real Estate [Member]
Summary information for the reportable segments
Rental and other property revenues	2,266	21,618	21,012	61,748
Property operating expenses	6,986	16,043	25,116	45,138
Asset Management [Member]
Summary information for the reportable segments
Rental and other property revenues	5,022	18,232	42,830	55,327
Property operating expenses	2,608	8,872	20,865	26,458
Asset Management [Member] | Operating Segments [Member] | Aimco Real Estate [Member]
Summary information for the reportable segments
Rental and other property revenues	0	0	0	0
Property operating expenses	0	0	0	0
Asset Management [Member] | Corporate Non-Segment [Member]
Summary information for the reportable segments
Rental and other property revenues	5,022	18,232	42,830	55,327
Property operating expenses	$ 2,608	$ 8,872	$ 20,865	$ 26,458

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Business Segments (Details 1) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total assets	$ 6,185,021	$ 6,079,040
Operating Segments [Member] | Aimco Real Estate [Member]
Segment Reporting Information [Line Items]
Total assets	5,861,647	5,391,816
Corporate Non-Segment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 323,374	$ 687,224

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Variable Interest Entities (Details) - Variable Interest Entity, Primary Beneficiary [Member] $ in Thousands	Sep. 30, 2018 USD ($) Units Property Entity	Dec. 31, 2017 USD ($) Units Property Entity
Aimco Real Estate [Member]
Variable Interest Entity [Line Items]
Number of consolidated variable interest entities | Entity	9	14
Number of apartment communities | Property	9	14
Number of apartment homes owned by VIEs | Units	3,592	4,321
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Net real estate	$ 481,390	$ 529,898
Cash and cash equivalents	13,193	16,111
Restricted cash	7,295	4,798
Non-recourse property debt secured by Real Estate communities, net	339,278	412,205
Accrued liabilities and other	$ 17,096	$ 10,623
Asset Management [Member]
Variable Interest Entity [Line Items]
Number of consolidated variable interest entities | Entity	0	49
Number of apartment communities | Property	0	37
Number of apartment homes owned by VIEs | Units	0	5,893
Assets Held-for-sale [Member] | Asset Management [Member]
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Net real estate	$ 0	$ 215,580
Cash and cash equivalents	0	15,931
Restricted cash	0	30,107
Non-recourse property debt secured by Real Estate communities, net	0	220,356
Accrued liabilities and other	$ 0	$ 20,241