Exhibit 21.1



|                                                                                                                                          |  |                                      |  |                                                       
|----------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------ |  | ------------------------------------------------------
|Subsidiary                                                                                                                                |  | State ofIncorporation orOrganization |  | Name under which Subsidiary Conducts Business         
|                                                                                                                                          | 
|The financial statements of the following entities were consolidated into the financialstatements of the Registrant at December 31, 2009: |  |                                     
|                                                                                                                                          |  |                                     
|Duke Acquisition, Inc.                                                                                                                    |  | Georgia                              |  | Duke Acquisition, Inc.                                
|Duke Realty Ohio                                                                                                                          |  | Indiana                              |  | Duke Realty Ohio                                      
|Duke Construction Limited Partnership                                                                                                     |  | Indiana                              |  | Duke Construction Limited Partnership                 
|Duke Realty Construction, Inc.                                                                                                            |  | Indiana                              |  | Duke Realty Construction, Inc.                        
|Duke Realty Services, LLC                                                                                                                 |  | Indiana                              |  | Duke Realty Services, LLC                             
|Duke Realty Services Limited Partnership                                                                                                  |  | Indiana                              |  | Duke Realty Services Limited Partnership              
|Duke Business Centers Corporation                                                                                                         |  | Indiana                              |  | Duke Business Centers Corporation                     
|Kenwood Office Developers Limited Partnership                                                                                             |  | Ohio                                 |  | Kenwood Office Developers Limited Partnership         
|Duke Kentucky, Inc.                                                                                                                       |  | Kentucky                             |  | Duke Kentucky, Inc.                                   
|Mark Center TMP, LLC                                                                                                                      |  | Delaware                             |  | Mark Center TMP, LLC                                  
|BD Adena Development, LLC                                                                                                                 |  | Indiana                              |  | BD Adena Development, LLC                             
|BD Adena Financing, LLC                                                                                                                   |  | Indiana                              |  | BD Adena Financing, LLC                               
|Physicians Office Building of Fort Wayne, LLC                                                                                             |  | Indiana                              |  | Physician Office Building of Fort Wayne, LLC          
|BD Fort Wayne Financing, LLC                                                                                                              |  | Indiana                              |  | BD Fort Wayne Financing, LLC                          
|BD Center Pointe, LLC                                                                                                                     |  | Georgia                              |  | BD Center Pointe, LLC                                 
|BremnerDuke - Anson Development I, LLC                                                                                                    |  | Indiana                              |  | Bremner/Duke - Anson Development I, LLC               
|BremnerDuke - AOA Arlington Development, L.P.                                                                                             |  | Indiana                              |  | Bremner/Duke - AOA Arlington Development, L.P.        
|                                                                                                                                          | 
|The Registrant accounted for the following entities on the equity method atDecember 31, 2009:                                             |  |                                     
|                                                                                                                                          |  |                                     
|B/D Limited Partnership                                                                                                                   |  | Indiana                              |  | B/D Limited Partnership                               
|Cincinnati Development Group Limited Liability Company                                                                                    |  | Ohio                                 |  | Cincinnati Development Group Limited Liability Company
|Dugan Realty, L.L.C.                                                                                                                      |  | Indiana                              |  | Dugan Realty, L.L.C.                                  
|Dugan Texas, LLC                                                                                                                          |  | Delaware                             |  | Dugan Texas, LLC                                      
|Duke/Hawk, L.L.C.                                                                                                                         |  | Indiana                              |  | Duke/Hawk, L.L.C.                                     
|Hillside Partnership One LP                                                                                                               |  | Georgia                              |  | Hillside Partnership One                              
|Horizon Park Developers, Inc.                                                                                                             |  | Georgia                              |  | Horizon Park Developers, Inc.                         
|Lamida Group, L.L.C.                                                                                                                      |  | Indiana                              |  | Lamida Group, L.L.C.                                  
|Northwinds Land, L.P.                                                                                                                     |  | Georgia                              |  | Northwinds Land, L.P.                                 
|Cincinnati Development Group/Other Ventures LLC                                                                                           |  | Ohio                                 |  | Cincinnati Development Group/Other Ventures LLC       
|Dugan Millenia LLC                                                                                                                        |  | Delaware                             |  | Dugan Millenia LLC                                    
|Park Creek Venture                                                                                                                        |  | Indiana                              |  | Park Creek Venture                                    
|BCC Cancer Center Venture, L.P.                                                                                                           |  | Delaware                             |  | BCC Cancer Center Venture, LP                         
|BremnerDuke Mary Shiels Development, L.P.                                                                                                 |  | Indiana                              |  | BremnerDuke Mary Shiels Development, L.P.             
|AD West End, LLC                                                                                                                          |  | Indiana                              |  | AD West End, LLC                                      
|Browning/Duke, LLC                                                                                                                        |  | Delaware                             |  | Browning/Duke, LLC                                    
|DRCS, LLC                                                                                                                                 |  | Delaware                             |  | DRCS, LLC                                             
|P&L Duke 3630 Peachtree, L.P.                                                                                                             |  | Georgia                              |  | P&L Duke 3630 Peachtree, L.P.                         
|Quantico Real Estate, LLC                                                                                                                 |  | Delaware                             |  | Quantico Real Estate, LLC                             
|Lafayette Real Estate, LLC                                                                                                                |  | Delaware                             |  | Lafayette Real Estate, LLC                            
|Duke/Kane, LLC                                                                                                                            |  | Delaware                             |  | Duke/Kane, LLC                                        
|G&E Healthcare REIT/Duke Chesterfield Rehab, LLC                                                                                          |  | Delaware                             |  | G&E Healthcare REIT/Duke Chesterfield Rehab, LLC      
|Linden Development, LLC                                                                                                                   |  | New Jersey                           |  | Linden Development, LLC                               
|Duke/Hulfish, LLC                                                                                                                         |  | Delaware                             |  | Duke/Hulfish, LLC                                     
|                                                                                                                                          | 
|The Registrant accounted for the following entity on the cost method at December 31,2009:                                                 |  |                                     
|                                                                                                                                          |  |                                     
|Pinnacle Media, LLC                                                                                                                       |  | Indiana                              |  | Pinnacle Media, LLC