EXHIBIT 3.1

AMENDMENT NO. 1
TO THE
AMENDED AND RESTATED BYLAWS
OF
EQUITY OFFICE PROPERTIES TRUST
EFFECTIVE JULY 13, 2001

This will confirm that effective as of July 13, 2001, Section 7 of Article IV
of the Trusts Amended and Restated Bylaws has been amended and restated in its
entirety as follows:



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| | Section 7.   EXECUTIVE COMMITTEE. The Executive Committee shall be
composed of not less than three Trustees and, subject to the
exceptions hereafter described, established for the purpose of
undertaking or authorizing, on behalf of the Board, any and all
actions which might be undertaken or authorized by the Board
itself; provided that, in the absence of further resolution from
the Board, the Executive Committee shall not be empowered (i) to
bind the Trust in respect to any acquisition, disposition or
development which has not been approved by or reported to the
Board and which, when aggregated with all other such unreported
and unapproved acquisitions, dispositions or developments, exceeds
Two Hundred Million Dollars ($200,000,000), calculated without
regard to any non-recourse indebtedness; (ii) to approve any
merger or other re-organization of the Trust; (iii) to make any
recommendation to the shareholders of the Trust; (iv) to elect any
individual to the office of executive vice-president or higher of
the Trust; (v) to amend the Bylaws of the Trust; (vi) to undertake
any action which is within the jurisdiction of any other committee
of the Board; (vii) to enter into any transaction in which any
member of the Executive Committee has a material financial
interest which is adverse to the Trust; (viii) to remove or
appoint any Trustee; or (viii) to borrow or enter into agreements
to borrow in excess of Two Hundred Fifty Million Dollars
($250,000,000) individually or in the aggregate, in loans which
have not been reported to or approved by the Board; and provided
further that the Executive Committee is expressly empowered, upon
its determination that any such increase in purchase price or
decrease in sales price or increase in development budget is
required in order to close a given transaction, or to effect a
development project previously approved by the Board, to increase
any purchase price or development budget or to decrease any sales
price previously approved by the Board by an amount not greater
than the lesser of (x) five percent (5%) of the purchase or sales
price or development budget previously approved by the Board or
(y) Fifty Million Dollars ($50,000,000). | 



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| | /s/ Robin Mariella 
| | Robin Mariella     
| | Assistant Secretary