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

Plumbers in Ontario, CA

49 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
07

Duke Plumbing Inc

Upland, CA · (909) 981-8200

CA-CSLB 430513 · A C36General engineering contractorPlumber
License activechecked Oct 24, 2026
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10

Eagle Air Co

Chino, CA · (714) 882-9580

CA-CSLB 1099959 · C4 C20PlumberHeating and air conditioning
License activechecked Oct 24, 2026
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17

Evergreen Environment Inc

Riverside, CA · (951) 332-2218

CA-CSLB 810462 · A B +5General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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20

Fallah Plumbing

Rancho Cucamonga, CA · (949) 545-4948

CA-CSLB 1054233 · B C36General contractorPlumber
License activechecked Oct 24, 2026
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