EXHIBIT 12.1

DUKE REALTY LIMITED PARTNERSHIP

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO

COMBINED FIXED CHARGES AND PREFERRED DISTRIBUTIONS

(in thousands, except ratios)



|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|-------------------------------------------------------------------------- |  | --------------------------------- | ------- | --- | -------------------------- | - | -------- | -------------------------- |  | - | -------------------------- | --- |  | -------------------------- | ------- |  | -------------------------- | - | ------- |  |  | - | ------- | 
|                                                                           |  | Nine MonthsEndedSeptember 30,2010 |         |     | Year EndedDecember 31,2009 |   |          | Year EndedDecember 31,2008 |  |   | Year EndedDecember 31,2007 |     |  | Year EndedDecember 31,2006 |         |  | Year EndedDecember 31,2005 |  
|Net income (loss) from continuing operations, less preferred distributions |  | $                                 | (38,070 | )   |                            | $ | (342,081 | )                          |  | $ | 16,436                     |     |  | $                          | 102,645 |  |                            | $ | 99,102  |  |  | $ | 91,696  | 
|Preferred distributions                                                    |  |                                   | 53,452  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |  |                            | 58,292  |  |                            |   | 56,419  |  |  |   | 46,479  | 
|Interest expense                                                           |  |                                   | 182,771 |     |                            |   | 214,998  |                            |  |   | 193,125                    |     |  |                            | 169,509 |  |                            |   | 165,136 |  |  |   | 101,732 | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|Earnings (loss) before fixed charges                                       |  | $                                 | 198,153 |     |                            | $ | (53,632  | )                          |  | $ | 280,987                    |     |  | $                          | 330,446 |  |                            | $ | 320,657 |  |  | $ | 239,907 | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|                                                                           |  |                                   |         |     |                            |  
|Interest expense                                                           |  | $                                 | 182,771 |     |                            | $ | 214,998  |                            |  | $ | 193,125                    |     |  | $                          | 169,509 |  |                            | $ | 165,136 |  |  | $ | 101,732 | 
|Interest costs capitalized                                                 |  |                                   | 10,166  |     |                            |   | 26,864   |                            |  |   | 53,456                     |     |  |                            | 59,167  |  |                            |   | 36,260  |  |  |   | 9,510   | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|Total fixed charges                                                        |  |                                   | 192,937 |     |                            |   | 241,862  |                            |  |   | 246,581                    |     |  |                            | 228,676 |  |                            |   | 201,396 |  |  |   | 111,242 | 
|                                                                           |  |                                   |         |     |                            |  
|Preferred distributions                                                    |  |                                   | 53,452  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |  |                            | 58,292  |  |                            |   | 56,419  |  |  |   | 46,479  | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|Total fixed charges and preferred distributions                            |  | $                                 | 246,389 |     |                            | $ | 315,313  |                            |  | $ | 318,007                    |     |  | $                          | 286,968 |  |                            | $ | 257,815 |  |  | $ | 157,721 | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|                                                                           |  |                                   |         |     |                            |  
|Ratio of earnings to fixed charges                                         |  |                                   | 1.03    |     |                            |   | N/A      | (2)                        |  |   | 1.14                       |     |  |                            | 1.45    |  |                            |   | 1.59    |  |  |   | 2.16    | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 
|                                                                           |  |                                   |         |     |                            |  
|Ratio of earnings to fixed charges and preferred distributions             |  |                                   | N/A     | (1) |                            |   | N/A      | (3)                        |  |   | N/A                        | (4) |  |                            | 1.15    |  |                            |   | 1.24    |  |  |   | 1.52    | 
|                                                                           |  |                                   |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |                            |   |         |  |  |   |         | 



|(1) | N/A  The ratio is less than 1.0; deficit of $48.2 million exists for the nine months ended September 30, 2010. The calculation of earnings includes $261.7
million of non-cash depreciation expense.
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|(2) | N/A  The ratio is less than 1.0; deficit of $295.5 million exists for the year ended December 31, 2009. The calculation of earnings includes $332.6 million
of non-cash depreciation expense.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | N/A  The ratio is less than 1.0; deficit of $368.9 million exists for the year ended December 31, 2009. The calculation of earnings includes $332.6 million
of non-cash depreciation expense.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | N/A  The ratio is less than 1.0; deficit of $37.0 million exists for the year ended December 31, 2008. The calculation of earnings includes $302.4 million of
non-cash depreciation expense.
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