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)



|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|-------------------------------------------------------------------------- |  | ------------------------------ | ------- | --- | -------------------------- | - | -------- | -------------------------- |  | - | -------------------------- | --- | -------------------------- | - | -------------------------- |  | - | ------- |  | - | -------
|                                                                           |  | Three MonthsEndedMarch 31,2010 |         |     | 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 |  | $                              | (25,605 | )   |                            | $ | (348,927 | )                          |  | $ | 16,755                     |     |                            | $ | 103,021                    |  | $ | 99,454  |  | $ | 92,639 
|Preferred distributions                                                    |  |                                | 18,363  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |                            |   | 58,292                     |  |   | 56,419  |  |   | 46,479 
|Interest expense                                                           |  |                                | 59,021  |     |                            |   | 216,908  |                            |  |   | 195,066                    |     |                            |   | 171,555                    |  |   | 167,061 |  |   | 103,277
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|Earnings (loss) before fixed charges                                       |  | $                              | 51,779  |     |                            | $ | (58,568  | )                          |  | $ | 283,247                    |     |                            | $ | 332,868                    |  | $ | 322,934 |  | $ | 242,395
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|                                                                           |  |                                |         |     |                            |  
|Interest expense                                                           |  | $                              | 59,021  |     |                            | $ | 216,908  |                            |  | $ | 195,066                    |     |                            | $ | 171,555                    |  | $ | 167,061 |  | $ | 103,277
|Interest costs capitalized                                                 |  |                                | 3,841   |     |                            |   | 26,864   |                            |  |   | 53,456                     |     |                            |   | 59,167                     |  |   | 36,260  |  |   | 9,510  
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|Total fixed charges                                                        |  |                                | 62,862  |     |                            |   | 243,772  |                            |  |   | 248,522                    |     |                            |   | 230,722                    |  |   | 203,321 |  |   | 112,787
|                                                                           |  |                                |         |     |                            |  
|Preferred distributions                                                    |  |                                | 18,363  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |                            |   | 58,292                     |  |   | 56,419  |  |   | 46,479 
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|Total fixed charges and preferred distributions                            |  | $                              | 81,225  |     |                            | $ | 317,223  |                            |  | $ | 319,948                    |     |                            | $ | 289,014                    |  | $ | 259,740 |  | $ | 159,266
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|                                                                           |  |                                |         |     |                            |  
|Ratio of earnings to fixed charges                                         |  |                                | N/A     | (1) |                            |   | N/A      | (3)                        |  |   | 1.14                       |     |                            |   | 1.44                       |  |   | 1.59    |  |   | 2.15   
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|                                                                           |  |                                |         |     |                            |  
|Ratio of earnings to fixed charges and preferred distributions             |  |                                | N/A     | (2) |                            |   | N/A      | (4)                        |  |   | N/A                        | (5) |                            |   | 1.15                       |  |   | 1.24    |  |   | 1.52   
|                                                                           |  |                                |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        



|(1) | N/A  The ratio is less than 1.0; deficit of $11.1 million exists for the three months ended March 31, 2010. The calculation of earnings includes $83.5
million of non-cash depreciation expense.
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|(2) | N/A  The ratio is less than 1.0; deficit of $29.4 million exists for the three months ended March 31, 2010. The calculation of earnings includes $83.5
million of non-cash depreciation expense.
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|(3) | N/A  The ratio is less than 1.0; deficit of $302.3 million exists for the year ended December 31, 2009. The calculation of earnings includes $335.2 million
of non-cash depreciation expense.
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|(4) | N/A  The ratio is less than 1.0; deficit of $375.8 million exists for the year ended December 31, 2009. The calculation of earnings includes $335.2 million
of non-cash depreciation expense.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | N/A  The ratio is less than 1.0; deficit of $36.7 million exists for the year ended December 31, 2008. The calculation of earnings includes $304.8 million of
non-cash depreciation expense.
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