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
121Upland, CA · (877) 660-2232
CA-CSLB 1000777 · B C10 +1General contractorElectricianPlumber
License activechecked Oct 24, 2026
Norco, CA · (833) 934-1101
CA-CSLB 1056447 · C36Plumber
License activechecked Oct 24, 2026
Fontana, CA · (909) 428-4680
CA-CSLB 874705 · C55Plumber
License activechecked Oct 24, 2026
Eastvale, CA · (951) 833-8572
CA-CSLB 758929 · C36Plumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (626) 488-0741
CA-CSLB 1138134 · C36Plumber
License activechecked Oct 24, 2026
Norco, CA · (951) 377-6333
CA-CSLB 1108387 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
Claremont, CA · (626) 672-6155
CA-CSLB 906682 · C36Plumber
License activechecked Oct 24, 2026
Mira Loma, CA · (951) 360-8300
CA-CSLB 399073 · C4 C16 +3PlumberFire sprinkler contractorGeneral engineering contractor+1
License activechecked Oct 24, 2026
Jurupa Valley, CA · (951) 316-2565
CA-CSLB 908660 · C36Plumber
License activechecked Oct 24, 2026
Mira Loma, CA · (909) 631-1578
CA-CSLB 1028362 · C36Plumber
License activechecked Oct 24, 2026
Fontana, CA · (909) 419-9302
CA-CSLB 1149152 · C36Plumber
License activechecked Oct 24, 2026
Upland, CA · (909) 500-8081
CA-CSLB 1050063 · C36Plumber
License activechecked Oct 24, 2026
Jurupa Valley, CA · (951) 965-0136
CA-CSLB 949419 · C36Plumber
License activechecked Oct 24, 2026
Fontana, CA · (909) 374-0264
CA-CSLB 980116 · C36Plumber
License activechecked Oct 24, 2026
Riverside, CA · (626) 232-1413
CA-CSLB 977844 · B C36General contractorPlumber
License activechecked Oct 24, 2026
Chino, CA · (909) 627-2697
CA-CSLB 150458 · B C36General contractorPlumber
License activechecked Oct 24, 2026
Chino Hills, CA · (909) 973-1553
CA-CSLB 425631 · C36Plumber
License activechecked Oct 24, 2026
Eastvale, CA · (626) 227-3457
CA-CSLB 1051101 · C10 C36ElectricianPlumber
License activechecked Oct 24, 2026
Rancho Cucamonga, CA · (888) 443-3020
CA-CSLB 905996 · C36 D21PlumberSpecialty contractor
License activechecked Oct 24, 2026
Mira Loma, CA · (951) 202-8946
CA-CSLB 932949 · C36Plumber
License activechecked Oct 24, 2026