| Business | Phone |
| Smith Quality Homes Inc 101 Ygnacio Valley Rd # 330, Walnut Creek 94596 | (925) 256-6141 |
| Castellana Homes 1196 Boulevard Way, Walnut Creek 94595 | (925) 943-2425 |
| Essy Construction Walnut Creek 94596 | (925) 930-0863 |
| Kiper Development Inc 1646 N California Blvd # 680, Walnut Creek 94596 | (925) 648-8888 |
| Saint James Properties Sales 299 Oak Rd, Walnut Creek 94597 | (925) 943-7006 |