NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

Plumbers in Castro Valley, CA

23 licensed plumbers · every license checked against the issuer's file

More cities in California

Los Angeles 651San Diego 494San Francisco 437San Jose 384Sacramento 242Riverside 208Bakersfield 191Anaheim 181Santa Rosa 157Glendale 156Long Beach 145Fresno 143Van Nuys 134El Cajon 133Escondido 128Oakland 128
Listings 1–20How results are ordered
04

Baek Construction

Castro Valley, CA · (415) 308-7071

CA-CSLB 1002450 · B C36General contractorPlumber
License activechecked Oct 24, 2026
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07

Bonetti Frank Plumbing Inc

Castro Valley, CA · (510) 582-0934

CA-CSLB 251165 · C4 C20 +3PlumberHeating and air conditioningGeneral engineering contractor+1
License activechecked Oct 24, 2026
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09

Buchmann Inc

Castro Valley, CA · (510) 512-5555

CA-CSLB 1004484 · A B +3General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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10

Demiguel Plumbing

Castro Valley, CA · (510) 604-1078

CA-CSLB 406575 · C16 C36Fire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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20

Streamline Plumbing & Drain Co

Castro Valley, CA · (510) 481-0380

CA-CSLB 672250 · A C36 +1General engineering contractorPlumberExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails