- 1919 Pa Ave Bldg
- Empire Leasing Inc
- Equity Office Properties Inc
- Hagner Management Corp
- Hines 1200 Nineteenth Street
- JBC Funds
- Karchem Properties Inc
- KITA Washington Ctr LLC
- Lincoln Properties
- Lincoln Property Co
- Newmark & Bank Co
- PM Realty Group
- Quadrangle Management Corp
- Realty Growth Managers Inc
- Ring Management
- Rock Creek Group
- Rock Creek Property Group LLC
- Rreef Management Co
- Spaulding & Slye
- Stout & Teague Property Mgmt
- Trammell Crow Co
- Trizec Properties Inc
- Trizec Properties Inc
- United Group Inc
- Washington Square Building
- Woordmarck Real Estate Svc
