UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q/A

Amendment No. 1

(Mark One)

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2010

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number 0-24497

AIMCO Properties, L.P.

(Exact name of registrant as specified in its charter)

Delaware	84-1275621
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)
4582 South Ulster Street Parkway, 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. Yes þ No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes o No o

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

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

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

The number of Partnership Common Units outstanding as of July 28, 2010: 123,021,611

Explanatory Note

This Form 10-Q/A amends the Quarterly Report on Form 10-Q of AIMCO Properties, L.P. for the quarter ended June 30, 2010 filed on July 30, 2010 (the “Form 10-Q”) for the sole purpose of furnishing the Interactive Data File as Exhibit 101 in accordance with Rule 405(a)(2) of Regulation S-T.

No other changes have been made to the Form 10-Q. This Form 10-Q/A speaks as of the original filing date of the Form 10-Q, does not reflect events that may have occurred subsequent to the original filing date, and does not modify or update in any way disclosures made in the Form 10-Q.

Users of this data are advised that pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and otherwise are not subject to liability under those Sections.

ITEM 6. Exhibits

The following exhibits are filed with this report:

EXHIBIT NO. (1)

10.1 *	Ninth Amendment to Amended and Restated Senior Secured Credit Agreement, dated as of May 14, 2010, by and among Apartment Investment and Management Company, AIMCO Properties, L.P., and AIMCO/Bethesda Holdings, Inc., as the borrowers, the guarantors and the pledgors named therein and the lenders party thereto (Exhibit 10.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010, 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
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
32.1 *	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2 *	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
99.1 *	Agreement Regarding Disclosure of Long-Term Debt Instruments
101.INS **	XBRL Instance Document
101.SCH **	XBRL Taxonomy Extension Schema Document
101.CAL **	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB **	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE **	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF **	XBRL Taxonomy Extension Definition Linkbase Document

(1) Schedules and supplemental materials to the exhibits have been omitted but will be provided to the Securities and Exchange Commission upon request.

* Previously filed or furnished with AIMCO Properties, L.P.’s Form 10-Q filed on July 30, 2010.

** In accordance with Regulation S-T, the XBRL-formatted interactive data files that comprise Exhibit 101 to this Quarterly Report on Form 10-Q shall be deemed “furnished” and not “filed.”

1

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.

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

Date: August 16, 2010

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ITEM 6. Exhibits

Exhibit Index

EXHIBIT NO. (1)

10.1 *	Ninth Amendment to Amended and Restated Senior Secured Credit Agreement, dated as of May 14, 2010, by and among Apartment Investment and Management Company, AIMCO Properties, L.P., and AIMCO/Bethesda Holdings, Inc., as the borrowers, the guarantors and the pledgors named therein and the lenders party thereto (Exhibit 10.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010, 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
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
32.1 *	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2 *	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
99.1 *	Agreement Regarding Disclosure of Long-Term Debt Instruments
101.INS **	XBRL Instance Document
101.SCH **	XBRL Taxonomy Extension Schema Document
101.CAL **	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB **	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE **	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF **	XBRL Taxonomy Extension Definition Linkbase Document

(1) Schedules and supplemental materials to the exhibits have been omitted but will be provided to the Securities and Exchange Commission upon request.

* Previously filed or furnished with AIMCO Properties, L.P.’s Form 10-Q filed on July 30, 2010.

** In accordance with Regulation S-T, the XBRL-formatted interactive data files that comprise Exhibit 101 to this Quarterly Report on Form 10-Q shall be deemed “furnished” and not “filed.”