Exhibit 12
GLADSTONE COMMERCIAL CORPORATION
RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS
                                         
                                    For the period  
                                    February 14, 2003  
    For the year ended     For the year ended     For the year ended     For the year ended     (inception) through  
    December 31, 2007     December 31, 2006     December 31, 2005     December 31, 2004     December 31, 2003  
Net income (loss) from continuing operations
  $ 6,031,515     $ 3,357,031     $ 3,510,957     $ 1,529,253     $ (240,871 )
 
                                       
Add fixed charges and preferred dividends
    15,670,067       11,490,476       2,494,245       25,565       7,830  
 
                             
 
                                       
Earnings
  $ 21,701,582     $ 14,847,507     $ 6,005,202     $ 1,554,818     $ (233,041 )
 
                                       
Fixed Charges:
                                       
Interest expense
    10,847,346       8,041,412       2,187,586              
Amortization of deferred financing fees
    717,195       1,207,198       260,098              
Estimated interest component of rent
    11,776       54,976       46,561       25,565       7,830  
 
                             
 
                                       
Total fixed charges
    11,576,317       9,303,586       2,494,245       25,565       7,830  
 
                                       
Total preferred dividends
    4,093,750       2,186,890                    
 
                             
 
                                       
Total fixed charges and preferred dividends
    15,670,067       11,490,476       2,494,245       25,565       7,830  
 
                                       
Ratio of earnings to combined fixed charges and preferred dividends
    1.4       1.3       2.4       60.8        (1)
 
(1)   Note for the period February 14, 2003 through December 31, 2003 earnings, as defined, were insufficent to cover fixed charges by $240,871.