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
41Alta Loma, CA · (951) 990-7077
CA-CSLB 725816 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (310) 469-1101
CA-CSLB 1008312 · C36Plumber
License activechecked Oct 24, 2026
Chino, CA · (909) 631-7467
CA-CSLB 1113406 · C36Plumber
License activechecked Oct 24, 2026
Upland, CA · (747) 777-0940
CA-CSLB 930815 · B C36General contractorPlumber
License activechecked Oct 24, 2026
Alta Loma, CA · (909) 376-8853
CA-CSLB 1160958 · C36Plumber
License activechecked Oct 24, 2026
Riverside, CA · (951) 351-1675
CA-CSLB 307090 · C36Plumber
License activechecked Oct 24, 2026
Alta Loma, CA · (951) 304-9961
CA-CSLB 830874 · C10 C20 +1ElectricianHeating and air conditioningPlumber
License activechecked Oct 24, 2026
Chino, CA · (909) 393-9798
CA-CSLB 845160 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 24, 2026
Upland, CA · (909) 243-2086
CA-CSLB 1086827 · C36Plumber
License activechecked Oct 24, 2026
Riverside, CA · (714) 365-5658
CA-CSLB 1095079 · C36Plumber
License activechecked Oct 24, 2026
Fontana, CA · (909) 518-7279
CA-CSLB 1154248 · C36Plumber
License activechecked Oct 24, 2026
Riverside, CA · (951) 934-3931
CA-CSLB 936582 · C36Plumber
License activechecked Oct 24, 2026
Pomona, CA · (909) 242-5235
CA-CSLB 978154 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
Pomona, CA · (626) 372-2174
CA-CSLB 892137 · C36Plumber
License activechecked Oct 24, 2026
Riverside, CA · (949) 735-2113
CA-CSLB 1009309 · B C20 +1General contractorHeating and air conditioningPlumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (562) 230-4980
CA-CSLB 1134353 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 804-8000
CA-CSLB 1066845 · C36Plumber
License activechecked Oct 24, 2026
Chino, CA · (951) 531-3007
CA-CSLB 1094028 · B C10 +1General contractorElectricianPlumber
License activechecked Oct 24, 2026
Riverside, CA · (951) 250-7743
CA-CSLB 1159646 · C36Plumber
License activechecked Oct 24, 2026
Fontana, CA · (562) 698-8044
CA-CSLB 549311 · C36Plumber
License activechecked Oct 24, 2026