| Business | Phone |
| A-1 American Plumbing 19244 Redwood Rd, Castro Valley 94546 | (925) 443-1234 |
| A-1 American Plumbing Heating 4754 Proctor Rd, Castro Valley 94546 | (510) 796-4328 |
| A-Abba Plumbing & Construction 20885 Redwood Rd # 120, Castro Valley 94546 | (510) 750-4942 |
| A1 American Plumbing & Heat 19244 Redwood Rd # B, Castro Valley 94546 | (510) 581-0607 |
| Brad La Verne Plumbing 18065 Joseph Dr, Castro Valley 94546 | (510) 886-7500 |
| Demiguel Plumbing Castro Valley 94546 | (510) 881-5230 |
| Frank Bonetti Plumbing Inc 20878 Rutledge Rd, Castro Valley 94546 | (510) 582-0934 |
| Greer Family Plumbing 3056 Castro Valley Blvd, Castro Valley 94546 | (510) 690-0251 |
| Jerry Marks Plumbing Co 17034 Foothill Blvd, Castro Valley 94546 | (510) 278-9980 |
| Ortiz Construction Inc Castro Valley 94546 | (510) 538-9464 |
| Roeber's Inc 2516 San Carlos Ave, Castro Valley 94546 | (510) 537-0556 |
| Jerry Marks Plumbing Co 2572 San Carlos Ave, Castro Valley 94546 | (510) 278-9980 |
| Skip's Plumbing & Drain Svc Castro Valley 94546 | (510) 537-5540 |
| Turbo Plumbing 18719 Lamson Rd, Castro Valley 94546 | (510) 733-2646 |
| Mr. Rescue Plumbing & Drain Cleaning 4061 East Castro Valley Blvd # 28, Castro Valley 94552 | (510) 493-7947 |
| Mr. Drain Plumbing 3056 Castro Valley Blvd Suite # 149, Castro Valley 94546 | (510) 257-1243 |