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Licensed plumbers in Castro Valley, CA
19 plumbing contractors with a CSLB C-36 license list a business address in Castro Valley (Alameda County). A listing is not an endorsement.
Guides: Water heater installation in California · How to hire a plumber in California · What a C-36 plumbing license covers
Listings are CSLB C-36 Plumbing licences in the file downloaded November 4, 2026. Confirm a license is current on the CSLB license check before hiring.
| Business | Phone | License # | Expires |
|---|---|---|---|
| AAA Plumbing & Remodeling Inc. | (510) 737-2376 | 1052769 | 06/30/2027 |
| All Fixture Plumbing | (510) 760-6181 | 774779 | 02/29/2028 |
| Alligator Plumbing Inc. | (925) 575-7584 | 995431 | 01/31/2027 |
| Blu Pipe Plumbing LLC Website | (510) 508-1214 | 1132566 | 02/28/2027 |
| Bluewave Plumbing And Water Heaters LLC | (650) 922-9994 | 1151565 | 03/31/2028 |
| Bri-Carr Plumbing | (510) 760-4731 | 658310 | 11/30/2026 |
| Clearwater Plumbing | (408) 245-7586 | 872069 | 02/29/2028 |
| Demiguel Plumbing | (510) 604-1078 | 406575 | 06/30/2027 |
| Elias Lambros Plumbing | (510) 520-9866 | 561709 | 03/31/2027 |
| Frank Bonetti Plumbing Inc. | (510) 582-0934 | 251165 | 05/31/2028 |
| Harris Water Heaters Inc. | (877) 946-8426 | 1026214 | 11/30/2028 |
| Houston Plumbing | (510) 909-7498 | 960208 | 04/30/2027 |
| Just Plumbing Inc. | (510) 754-2630 | 909971 | 08/31/2027 |
| Olga Garibay Plumbing | (510) 228-7052 | 1139028 | 06/30/2027 |
| Patrick Mc Carthy | (510) 773-4742 | 806963 | 04/30/2028 |
| Proper Plumbing Services LLC | (650) 580-3846 | 1100951 | 04/30/2028 |
| Streamline Plumbing & Drain Co. | (510) 481-0380 | 672250 | 09/30/2027 |
| Water Heater Company | (510) 962-1227 | 987574 | 10/31/2027 |
| Wong Plumbing | (510) 559-3925 | 1158954 | 07/31/2028 |