| Business | Phone |
| Concrete Concepts Sonora 95370 | (209) 532-1319 |
| Hagstrom Construction Sonora 95370 | (209) 532-0635 |
| Ken's Asphalt Sonora 95370 | (209) 532-0800 |
| Kuffel Construction 19776 Highway 108, Sonora 95370 | (209) 533-9125 |
| Morrison Construction Co 18041 Old Wards Ferry Rd, Sonora 95370 | (209) 533-1242 |