Exhibit 24

POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby authorizes
Richard E. Moran Jr. and Tyler Rose, each of them, to execute for
and on behalf of the undersigned, any and all Forms 3, 4 and 5,
and any amendments thereto, which he is required to file pursuant
to Section 16(a) of the Securities Act of 1934 as a director of
Kilroy Realty Corporation (the Company) and cause any such form
to be filed with the United States Securities and Exchange Commission.
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-facts 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 undersigneds 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 undersigneds holdings of, and transactions in, securities issued
by the Company, unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.

In Witness Whereof, the undersigned has cause this power of Attorney to
be executed as of this 18 day of July, 2003.


						/s/ Edward F. Brennan