81. GK Development
| Address | 257 East Main St. |
| Address (Cont.) | Barrington, IL 60010 |
| Phone | 847.277.9930 |
| Website | www.gkdevelopment.com |
| Top Officers | Garo Kholamian, President; Greg Kveton, Principal; Sherry Mast, Principal |
| Total U.S. Managed Portfolio (sq. ft.) | 5,302,256 |
| Total International Managed Portfolio (sq. ft.) | |
| Total U.S. Properties Managed | 15 |
| Total International Properties Managed |