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
41Ontario, CA · (909) 947-4601
CA-CSLB 419626 · A B +11General engineering contractorGeneral contractorPlumber+2
License activechecked Oct 24, 2026
Ontario, CA · (909) 969-6044
CA-CSLB 915935 · C36Plumber
License activechecked Oct 24, 2026
Ontario, CA · (909) 667-9119
CA-CSLB 1140510 · C36Plumber
License activechecked Oct 24, 2026
Ontario, CA · (562) 881-8208
CA-CSLB 817917 · C27 C36LandscaperPlumber
License activechecked Oct 24, 2026
Ontario, CA · (909) 226-5877
CA-CSLB 1138500 · C36Plumber
License activechecked Oct 24, 2026
Ontario, CA · (909) 730-8459
CA-CSLB 954619 · C36Plumber
License activechecked Oct 24, 2026
Ontario, CA · (817) 228-9059
CA-CSLB 1129511 · A C10 +1General engineering contractorElectricianPlumber
License activechecked Oct 24, 2026
Ontario, CA · (909) 437-7870
CA-CSLB 853144 · C36Plumber
License activechecked Oct 24, 2026
Ontario, CA · (909) 967-3472
CA-CSLB 703553 · B C10 +2General contractorElectricianPlumber+1
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 736-6242
CA-CSLB 1146986 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 921-1963
CA-CSLB 940722 · C10 C20 +1ElectricianHeating and air conditioningPlumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 987-7721
CA-CSLB 1094177 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 944-6637
CA-CSLB 522129 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (888) 272-0933
CA-CSLB 1012392 · C55Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 944-8999
CA-CSLB 1027049 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (800) 790-7757
CA-CSLB 403777 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (800) 255-0788
CA-CSLB 1051168 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 644-1582
CA-CSLB 1069409 · B C36General contractorPlumber
License activechecked Oct 24, 2026
Upland, CA · (626) 253-7570
CA-CSLB 432244 · B C27 +1General contractorLandscaperPlumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (909) 977-1010
CA-CSLB 1136432 · C36Plumber
License activechecked Oct 24, 2026