| Business | Phone |
| Keith Robbins Construction 20043 El Ray Ln, Sonora 95370 | (209) 532-9761 |
| Lundgren Systems 21507 American River Dr, Sonora 95370 | (209) 532-7726 |
| O K Mittry & Sons Dogpatch Ln, Sonora 95370 | (209) 533-0435 |
| Peter Neumann Construction 17487 Wards Ferry Rd, Sonora 95370 | (209) 532-2910 |
| Twain Harte Construction Co 21162 Longeway Rd, Sonora 95370 | (209) 532-3697 |