##### 



Brandywine Operating Partnership, L.P.
Computation of Ratio of Earnings to Combined Fixed Charges
(in thousands)
 For the three-months ended March 31,
    
    
    For the years ended December 31,2007
    
    
    2006
    
    
    2006
    
    
    2005
    
    
    2004
    
    
    2003
    
    
    2002Earnings before fixed charges:Add:Income (loss) from continuing operations
    
    $
    (7,638
    )
    
    $
    (7,909
    )
    
    $
    (19,451
    )
    
    $
    34,148
    
    
    $
    52,419
    
    
    $
    74,882
    
    
    $
    45,352Minority interest  partners share of consolidated real estate ventures
    
    
    (116
    )
    
    
    298
    
    
    
    (270
    )
    
    
    154
    
    
    
    (206
    )
    
    
    
    
    
    
    Fixed charges  per below
    
    
    46,967
    
    
    
    44,959
    
    
    
    191,614
    
    
    
    86,191
    
    
    
    60,611
    
    
    
    62,407
    
    
    
    69,881Less:Capitalized interest
    
    
    (3,764
    )
    
    
    (2,545
    )
    
    
    (9,537
    )
    
    
    (9,603
    )
    
    
    (3,030
    )
    
    
    (1,503
    )
    
    
    (2,949
    )Earnings before fixed charges
    
    $
    35,449
    
    
    $
    34,803
    
    
    $
    162,356
    
    
    $
    110,890
    
    
    $
    109,794
    
    
    $
    135,786
    
    
    $
    112,284Fixed charges:Interest expense (including amortization)
    
    $
    41,616
    
    
    $
    40,857
    
    
    $
    175,784
    
    
    $
    73,918
    
    
    $
    54,610
    
    
    $
    57,835
    
    
    $
    63,522Capitalized interest
    
    
    3,764
    
    
    
    2,545
    
    
    
    9,537
    
    
    
    9,603
    
    
    
    3,030
    
    
    
    1,503
    
    
    
    2,949Proportionate share of interest for unconsolidated real estate ventures
    
    
    1,587
    
    
    
    1,557
    
    
    
    6,293
    
    
    
    2,670
    
    
    
    2,971
    
    
    
    3,069
    
    
    
    3,410Total Fixed Charges
    
    
    46,967
    
    
    
    44,959
    
    
    
    191,614
    
    
    
    86,191
    
    
    
    60,611
    
    
    
    62,407
    
    
    
    69,881Ratio of earnings to combined fixed charges
    
    
    (b
    )
    
    
    (b
    )
    
    
    (b
    )
    
    
    1.29
    
    
    
    1.81
    
    
    
    2.18
    
    
    
    1.61
 
 (a)
    
    Amounts for the three-months ended March 31, 2007 and 2006 and for the years ended December 31, 2006, 2005,
2004, 2003 and 2002 have been reclassified to present properties sold consistent with the presentation for the period
ended March 31, 2007. As a result, operations have been reclassified to discontinued operations from
continuing operations for all periods presented.(b)
    
    Due to the registrants loss in the period, the coverage ratio was less than 1:1. The registrant must generate additional earnings of
$11,518 and $10,156 for the three-months ended March 31, 2007 and 2006, respectively and $29,258 for the year ended December 31, 2006
to achieve a coverage ratio of 1:1.