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)



|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|---------------------------------------------------------------------- |  | -------------------------- | ------- | --- | -------------------------- | - | -------- | -------------------------- |  | - | -------------------------- | --- |  | -------------------------- | ------- |  |  | - | ------- | 
|                                                                       |  | Year
EndedDecember 31,2010 |         |     | Year
EndedDecember 31,2009 |   |          | Year
EndedDecember 31,2008 |  |   | Year
EndedDecember 31,2007 |     |  | Year
EndedDecember 31,2006 |        
|Income (loss) from continuing operations, less preferred distributions |  | $                          | (39,992 | )   |                            | $ | (327,676 | )                          |  | $ | 14,741                     |     |  | $                          | 102,635 |  |  | $ | 101,494 | 
|Preferred distributions                                                |  |                            | 69,468  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |  |                            | 58,292  |  |  |   | 56,419  | 
|Interest expense                                                       |  |                            | 239,383 |     |                            |   | 205,952  |                            |  |   | 184,000                    |     |  |                            | 160,223 |  |  |   | 156,830 | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|Earnings (loss) before fixed charges                                   |  | $                          | 268,859 |     |                            | $ | (48,273  | )                          |  | $ | 270,167                    |     |  | $                          | 321,150 |  |  | $ | 314,743 | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|                                                                       |  |                            |         |     |                           
|Interest expense                                                       |  | $                          | 239,383 |     |                            | $ | 205,952  |                            |  | $ | 184,000                    |     |  | $                          | 160,223 |  |  | $ | 156,830 | 
|Interest costs capitalized                                             |  |                            | 11,498  |     |                            |   | 26,864   |                            |  |   | 53,456                     |     |  |                            | 59,167  |  |  |   | 36,260  | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|Total fixed charges                                                    |  |                            | 250,881 |     |                            |   | 232,816  |                            |  |   | 237,456                    |     |  |                            | 219,390 |  |  |   | 193,090 | 
|Preferred distributions                                                |  |                            | 69,468  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |  |                            | 58,292  |  |  |   | 56,419  | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|Total fixed charges and preferred distributions                        |  | $                          | 320,349 |     |                            | $ | 306,267  |                            |  | $ | 308,882                    |     |  | $                          | 277,682 |  |  | $ | 249,509 | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|                                                                       |  |                            |         |     |                           
|Ratio of earnings to fixed charges                                     |  |                            | 1.07    |     |                            |   | N/A      | (2)                        |  |   | 1.14                       |     |  |                            | 1.46    |  |  |   | 1.63    | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 
|                                                                       |  |                            |         |     |                           
|Ratio of earnings to fixed charges and preferred distributions         |  |                            | N/A     | (1) |                            |   | N/A      | (3)                        |  |   | N/A                        | (4) |  |                            | 1.16    |  |  |   | 1.26    | 
|                                                                       |  |                            |         |     |                            |   |          |                            |  |   |                            |     |  |                            |         |  |  |   |         | 

(1) N/A  the ratio is less than 1.0; deficit of $51.5 million exists for the year ended December 31, 2010. The
calculation of earnings includes $349.1 million of non-cash depreciation expense.

(2) N/A  the ratio is less than 1.0; deficit of $281.1
million exists for the year ended December 31, 2009. The calculation of earnings includes $323.4 million of non-cash depreciation expense.

(3) N/A  the ratio is less than 1.0; deficit of $354.5 million exists for the year ended December 31, 2009. The calculation of earnings
includes $323.4 million of non-cash depreciation expense.

(4) N/A  the ratio is less than 1.0; deficit of $38.7 million exists for the
year ended December 31, 2008. The calculation of earnings includes $293.0 million of non-cash depreciation expense.