| Business | Phone |
| Baja Construction Co Inc 223 Foster St, Martinez 94553 | (925) 228-1021 |
| Carter-Gough & Co 837 Arnold Dr # 320, Martinez 94553 | (925) 372-6600 |
| Baja Construction Co Inc 221 Foster St, Martinez 94553 | (925) 228-1021 |
| R J Hill Construction 401 Escobar St, Martinez 94553 | (925) 335-9700 |