1
                                                                    EXHIBIT 12.1

   
                      EQUITY OFFICE PROPERTIES TRUST AND
                           EQUITY OFFICE PREDECESSORS
                   STATEMENTS REGARDING COMPUTATION OF RATIOS
                               (DOLLARS IN 000'S)
     

   



                                                                              Equity Office                        Equity Office
                                                            Equity Office      Predecessors     Equity Office       Predecessors 
                                                          Properties Trust Combined Historical Properties Trust  Combined Historical
                                                            for the three     for the three     for the period     for the period 
                                                            months ended      months ended    from July 11, 1997  from Jan. 1, 1997 
                                                           March 31, 1998     March 31, 1997   to  Dec. 31, 1997  to July 10, 1997
                                                           --------------     --------------  ------------------  -----------------
                                                                                                                   
Net income before preferred dividends, minority interests-     $ 87,427           $ 36,235          $ 94,962          $ 49,173
Operating Partnership, gains from sales of property,                                                                           
provision for value impairment and extraordinary items                                                                        


Plus Fixed Charges:                                                                                                           
Interest expense                                                 69,884             36,355            76,675            80,481
Interest expense from unconsolidated subsidiaries                 1,907                  -                 -                 -
Loan amortization cost                                            1,871                709             4,179             2,771
Taxes                                                               557                278                 -                 -
                                                               --------           --------          --------         ---------
                                                                                                                              
Earnings                                                       $161,646           $ 73,577          $175,816          $132,425
                                                               ========           ========          ========         =========
Fixed Charges:                                                                                                                
                                                                                                                              
Interest expense                                               $ 69,884           $ 36,355          $ 76,675          $ 80,481
Interest expense from unconsolidated subs                         1,907                  -                 -                 -   
Capitalized interest                                              3,452              1,622             1,890             3,669
Loan amortization cost                                            1,871                709             4,179             2,771
Preferred dividends                                               6,271                  -               649                 -
                                                               --------           --------          --------         ---------
Total Fixed Charges                                            $ 83,385           $ 38,686          $ 83,393          $ 86,921
                                                               ========           ========          ========         =========
Ratio of Fixed Charges to Earnings                                 1.94               1.90              2.11              1.52
                                                               ========           ========          ========         =========





                                                                             Equity Office Predecessors
                                                                                 Combined Historical
                                                                               Years Ended December 31,
                                                                 1996        1995         1994       1993        1992
                                                                --------------------------------------------------------
                                                                                                
Net income before preferred dividends, Minority interests-      
  Operating Partnership,                                        $ 68,087     $ 23,436   $ 14,857    $  8,471    $ 6,330
gains from sales of property,       
provision for value impairment and extraordinary items    


Plus Fixed Charges:                                       
Interest expense                                                 119,595      100,566     59,316      36,755     25,775
Interest expense from unconsolidated subsidiaries                      -            -          -           -          -
Loan amortization cost                                             4,275        2,025      1,568         636        500
Taxes                                                                  -            -          -           -          -
                                                                --------     --------   --------    --------    -------
Earnings                                                        $191,957     $126,027   $ 75,741    $ 45,862    $32,605
                                                                ========     ========   ========    ========    =======
Fixed Charges:                                            
                                                          
Interest expense                                                $119,595     $100,566   $ 59,316    $ 36,755    $25,775
Interest expense from unconsolidated subs                              -            -          -           -          -
Capitalized interest                                               4,640        1,682          -           -          -
Loan amortization cost                                             4,275        2,025      1,568         636        500
Preferred dividends                                                    -            -          -           -          -
                                                                --------     --------   --------    --------    -------
Total Fixed Charges                                             $128,510     $104,273   $ 60,884    $ 37,391    $26,275
                                                                ========     ========   ========    ========    =======
Ratio of Fixed Charges to Earnings                                  1.49         1.21       1.24        1.23       1.24
                                                                ========     ========   ========    ========    =======