| Business | Phone |
| Blue Oak Design 350 Polk Way, Livermore 94550 | (925) 606-9709 |
| Colombo Design Co 1615 Barcelona St, Livermore 94550 | (925) 245-0927 |
| Laureta & Assoc 2286 Hampton Rd, Livermore 94550 | (925) 443-4142 |
| Colombo Design Co 2824 Siena Rd, Livermore 94550 | (925) 245-0927 |
| Valley Engineering Group Inc 1729 Rutan Dr, Livermore 94551 | (925) 371-5015 |