Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the reference to our firm under the caption “Experts” and to the use of our report dated March 29, 2010, included in the Information Statement/Prospectus of National Property Investors III that is made part of the Registration Statement (Form S-4 ) and Prospectus of Apartment Investment and Management Company and Aimco Properties, L.P.

/s/Ernst & Young LLP

Greenville, SC
October 12, 2010