| Business | Phone |
| Cutler Associates 7562 Penn Dr # 120, Allentown 18106 | (610) 530-9100 |
| North Star Construction Mgmt 7562 Penn Dr # 100, Allentown 18106 | (610) 395-7005 |
| Norwood Co 974 Marcon Blvd # 220, Allentown 18109 | (610) 266-1700 |
| Whiting-Turner Contracting Co 5050 W Tilghman St # 100, Allentown 18104 | (610) 366-0600 |