| Business | Phone |
| Harris & Assoc 120 Mason Cir, Concord 94520 | (925) 827-4900 |
| Kjm Assoc 1390 Willow Pass Rd # 240, Concord 94520 | (925) 685-8693 |
| Ksd Group Inc 1200 Concord Ave # 170, Concord 94520 | (925) 827-0841 |
| A & M Designs 3562 Kimball Way, Concord 94518 | (925) 689-7663 |
| D L Reed Construction Cnsltnts 5563 Plaza Nogal, Concord 94521 | (925) 672-0807 |
| Engineered Construction Svc 1200 Concord Ave # 200, Concord 94520 | (925) 969-9245 |
| Lamorinda 2261 Commerce Ave, Concord 94520 | (925) 680-1510 |