| Business | Phone |
| Artisan Builders Po Box 2525, Castro Valley 94546 | (510) 889-9269 |
| Bierly's Construction 18783 Stanton Ave, Castro Valley 94546 | (510) 886-9554 |
| Hilt Construction 20320 Hunters Knls, Castro Valley 94552 | (510) 537-6262 |
| Lifetime Builders Po Box 2148, Castro Valley 94546 | (510) 889-8659 |
| Reed's Craftsmanship 17994 Rockhurst Rd, Castro Valley 94546 | (510) 537-5923 |
| Steen Construction Po Box 2368, Castro Valley 94546 | (510) 247-9424 |
| William F Warner Construction 21984 Redwood Rd, Castro Valley 94546 | (510) 881-1883 |