| Business | Phone |
| Bill English Consulting Svc 81 Meadow View Rd, Orinda 94563 | (925) 254-6958 |
| Lloyd Gossen & Co Consulting 214 Moraga Way, Orinda 94563 | (925) 254-2534 |
| Mac Donell Engineering 71 Donna Maria Way, Orinda 94563 | (925) 377-0464 |
| Quest Structures 3 Altarinda Rd # 203, Orinda 94563 | (925) 253-3555 |
| Treadwell & Rollo Inc 2 Theatre Sq # 216, Orinda 94563 | (510) 874-4500 |