| Business | Phone |
| Gordon Ball Inc 333 Camille Ave, Alamo 94507 | (925) 838-5675 |
| R & L Brosamer 333 Camille Ave, Alamo 94507 | (925) 837-5600 |
| D E Bianchini Inc 191 Alamo Ranch Rd, Alamo 94507 | (925) 831-0400 |
| Nylund Contracting Co 3200a Danville Blvd # 100, Alamo 94507 | (925) 743-0433 |