AvalonBay Communities (AVB) 10-Q 2011 Q3 Quarterly report

Exhibit 32

CERTIFICATION

The undersigned officers of AvalonBay Communities, Inc. (the “Company”) hereby certify that the Company’s quarterly report on Form 10-Q to which this certification is attached (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 7, 2011

/s/ Bryce Blair

Bryce Blair

Chief Executive Officer

(Principal Executive Officer)

/s/ Thomas J. Sargeant

Thomas J. Sargeant

Chief Financial Officer

(Principal Financial Officer)

This certification is being furnished and not filed, and shall not be incorporated into any document for any purpose, under the Securities Exchange Act of 1934 or the Securities Act of 1933.