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                                                                    EXHIBIT 23.1

                         CONSENT OF INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Experts" and to the
incorporation by reference in the Registration Statements (Form S-3) and related
Prospectuses of Equity Office Properties Trust for the registration of
25,000,000 common shares of beneficial interest issuable under the Equity Office
Properties Trust Dividend Reinvestment and Share Purchase Plan (registration
statement no. 333-81303); 328,691 common shares of beneficial interest
(registration statement no. 333-72922); 16,784,214 common shares of beneficial
interest (registration statement no. 333-57526); guarantee of $4.0 billion of
debt securities and warrants exercisable for debt securities (registration
statement no. 333-58976); 9,558,824 common shares of beneficial interest
issuable upon exchange of $325.0 million of senior exchangeable notes of EOP
Operating Limited Partnership (registration statement no. 333-47754-01);
12,398,803 common shares of beneficial interest (registration statement no.
333-35590); 1,012,623 common shares of beneficial interest (registration
statement no. 333-88481); 21,649,274 common shares of beneficial interest
(registration statement no. 333-86079); 137,427 common shares of beneficial
interest (registration statement no. 333-69619); 6,854,451 common shares of
beneficial interest (registration statement no. 333-62213); 8,205,059 common
shares of beneficial shares of beneficial interest (registration statement no.
333-40401-01); 20,210,129 common shares of beneficial interest (registration
statement no. 333-59069); 6,000,000 5.25% Series B convertible, cumulative
preferred shares of beneficial interest and 8,403360 common shares of beneficial
interest issuable upon conversion of the 5.25% Series B convertible, cumulative
preferred shares of beneficial interest (registration statement no. 333-61105);
$1.5 billion of common shares of beneficial interest, preferred shares of
beneficial interest, common share warrants and preferred share warrants
(registration statement no. 333-58729); and 1,628,009 common shares of
beneficial interest (registration statement no. 333-58687); and in the
Registration Statements (Form S-8) relating to 3,124,774 common shares of
beneficial interest issuable under Stock Option Agreements under the Spieker
Properties, Inc 1993 Stock Incentive Plan and Directors' Stock Option Plan
(registration statement no. 333-64604); 3,681,212 common shares of beneficial
interest issuable under the 1995 and 1997 stock option agreements, stock option
agreements under the Cornerstone 1998 long-term incentive plan and Cornerstone
director stock option agreements (registration statement no. 333-39920);
8,449,434 common shares of beneficial interest issuable under the Amended and
Restated 1997 Share Option and Share Award Plan (registration statement no.
333-72205); 2,000,000 common shares of beneficial interest issuable under the
Equity Office Properties Trust 1997 Non-Qualified Employee Share Purchase Plan
(registration statement no. 333-72187); 4,749,095 common shares of beneficial
interest issuable under the Beacon Properties Corporation 1994 Stock Option and
Incentive Plan and 1996 Stock Option Plan (registration statement no.
333-42393); 2,000,000 common shares of beneficial interest issuable under the
Equity Office Properties Trust 1997 Non-Qualified Employee Share Purchase Plan
(registration statement no. 333-33503); and 11,121,786 common shares of
beneficial interest issuable under the Amended and Restated 1997 Share Option
and Share Award Plan (registration statement no. 333-33501), of our report dated
February 6, 2002, except for Note 26, as to which the date is February 15, 2002,
with respect to the consolidated financial statements and schedule of Equity
Office Properties Trust included in the 2001 Annual Report (Form 10-K) of Equity
Office Properties Trust. We also consent to the reference to our firm under the
caption "Selected Financial Data" in the 2001 Annual Report (Form 10-K) of
Equity Office Properties Trust.



                                                           Ernst & Young LLP

Chicago, Illinois
March 29, 2002