- Turner Construction Company
- Gilbane Building Company
- James G. Davis Construction Corporation
- The Clark Construction Group Inc.
- Spaulding & Slye Construction
- Donohoe Construction Company
- The Whiting -Turner Contracting Company
- Reiss Construction Company, Inc.
- Hitt Contracting Inc.
- Manhattan Construction Company
- J.A. Jones / Tompkins Builders
- Bovis Lend Lease, Inc.
- Structure Tone
- Sigal Construction Corporation
- The Smithsonian Institute
- Donohoe Real Estate Services
- Washington Real Estate Investment Trust
- The Mark Winkler Companies
- Grubb & Ellis Management Services
- Cushman & Wakefield
- Westfield Construction Incorporated
- Cottonwood Management Services
- Louis Dreyfus Property Company
- Hines Interest LTD.
- Rand Construction Corporation
- Charles E. Smith Companies
- Coakley & Williams Construction Company
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