NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors
Plumbers in Castro Valley, CA
23 licensed plumbers · every license checked against the issuer's file
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121San Ramon, CA · (925) 833-7110
CA-CSLB 948487 · B C36General contractorPlumber
License activechecked Oct 24, 2026
Hayward, CA · (650) 921-2276
CA-CSLB 1044477 · C36Plumber
License activechecked Oct 24, 2026
Hayward, CA · (510) 786-3711
CA-CSLB 320288 · C4Plumber
License activechecked Oct 24, 2026
Oakland, CA · (510) 679-7486
CA-CSLB 1108525 · C36Plumber
License activechecked Oct 24, 2026
San Leandro, CA · (510) 570-6770
CA-CSLB 960675 · A B +2General engineering contractorGeneral contractorHeating and air conditioning+1
License activechecked Oct 24, 2026
Union City, CA · (510) 557-8643
CA-CSLB 1072787 · C36 C42PlumberExcavation, grading and paving
License activechecked Oct 24, 2026
San Leandro, CA · (510) 551-7900
CA-CSLB 665946 · C36Plumber
License activechecked Oct 24, 2026
Oakland, CA · (510) 519-0601
CA-CSLB 1143778 · C36Plumber
License activechecked Oct 24, 2026
Oakland, CA · (510) 746-4000
CA-CSLB 1074845 · C4 C20 +2PlumberHeating and air conditioning
License activechecked Oct 24, 2026
Oakland, CA · (510) 746-4000
CA-CSLB 584263 · A B +10General engineering contractorGeneral contractorPlumber+2
License activechecked Oct 24, 2026
Oakland, CA · (510) 562-5847
CA-CSLB 835216 · C36Plumber
License activechecked Oct 24, 2026
Hayward, CA · (510) 723-0001
CA-CSLB 727798 · A C36 +1General engineering contractorPlumberAsbestos and hazardous materials abatement
License activechecked Oct 24, 2026
Oakland, CA · (510) 258-1314
CA-CSLB 1159936 · C36Plumber
License activechecked Oct 24, 2026
San Leandro, CA · (510) 780-2221
CA-CSLB 1128129 · B C12 +2General contractorExcavation, grading and pavingMasonry contractor+1
License activechecked Oct 24, 2026
Union City, CA · (510) 648-6884
CA-CSLB 951321 · C36Plumber
License activechecked Oct 24, 2026
Oakland, CA · (510) 365-7787
CA-CSLB 1104148 · A C36General engineering contractorPlumber
License activechecked Oct 24, 2026
San Leandro, CA · (510) 969-4358
CA-CSLB 1026755 · C36 C42PlumberExcavation, grading and paving
License activechecked Oct 24, 2026
Dublin, CA · (925) 548-8102
CA-CSLB 1118377 · C36Plumber
License activechecked Oct 24, 2026
Hayward, CA · (510) 688-2597
CA-CSLB 938525 · C36 C42PlumberExcavation, grading and paving
License activechecked Oct 24, 2026
San Leandro, CA · (510) 381-8705
CA-CSLB 1104286 · C4Plumber
License activechecked Oct 24, 2026