| Business | Phone |
| Bunker Hill Group Inc 1215 Quincy St Ne, Washington 20017 | (202) 526-3124 |
| Design-Build Institute-America 1100 H St Nw # 500, Washington 20005 | (202) 434-8240 |
| Dupont Medical Bldg 1234 19th St Nw, Washington 20036 | (202) 223-3830 |
| Design-Build Institute-America 1010 Massachusetts Ave Nw #350, Washington 20001 | (202) 434-8240 |