POA DOCUMENT

LIMITED POWER OF ATTORNEY FOR AVALONBAY COMMUNITIES, INC.
SECTION 16(a)
FILINGS


Know all by these presents, that the undersigned's hereby
makes, constitutes and appoints each of Thomas J. Sargeant, Joanne M.
Lockridge, and Edward M. Schulman, signing singly, the undersigned's true
and lawful attorney-in-fact to:

(1) Execute for and on behalf of the
undersigned, in the undersigned's capacity as an officer, director and/or
stockholder of AvalonBay Communities, Inc. (the "Company"), Forms 3, 4, and
5 and amendments thereto in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;

(2) Do and perform any
and all acts for and on behalf of the undersigned which may be necessary or
desirable to complete and execute any such Form 3, 4, or 5 or amendment
thereto and timely file such form with the United States Securities and
Exchange Commission (the "SEC") and any stock exchange or similar
authority; and

(3) Take any other action of any type whatsoever which,
in the opinion of such attorney-in-fact, may be necessary or desirable in
connection with the foregoing authority, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall contain
such terms and conditions as such attorney-in-fact may approve.


The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this Power of Attorney
and the rights and powers herein granted. The undersigned acknowledges
that the foregoing attorneys-in-fact, in serving in such capacity at the
request of the undersigned, are not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.

This Power of Attorney shall remain
in full force and effect until the undersigned is no longer required to
file Forms 3, 4, and 5 with respect to the undersigned's holdings of and
transaction in securities of the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing
attorneys-in-fact. This Power of Attorney may be filed with the SEC as a
confirming statement of the authority granted herein.

IN WITNESS
WHEREOF, the undersigned has caused this Power of Attorney to be executed
as of this 1st day of March, 2005.





/s/Lili F.
Dunn
Signature




_________________________________
Lili F. Dunn Print Name