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
01Ontario, CA · (909) 758-6237
CA-CSLB 1047486 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (626) 383-2431
CA-CSLB 1064810 · A C36General engineering contractorPlumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 628-6035
CA-CSLB 232930 · C4 C20 +1PlumberHeating and air conditioning
License activechecked Oct 19, 2026
Ontario, CA · (909) 375-1244
CA-CSLB 1103983 · C10 C20 +1ElectricianHeating and air conditioningPlumber
License activechecked Oct 19, 2026
Ontario, CA · (626) 720-3009
CA-CSLB 977823 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 947-2107
CA-CSLB 845651 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 319-1015
CA-CSLB 1020247 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (626) 340-9980
CA-CSLB 1049615 · B C36General contractorPlumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 244-2610
CA-CSLB 980596 · B C36General contractorPlumber
License activechecked Oct 19, 2026
Ontario, CA · (657) 286-8739
CA-CSLB 1136831 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (818) 423-9927
CA-CSLB 603170 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (840) 977-8909
CA-CSLB 1105933 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 391-4646
CA-CSLB 606705 · A C16 +1General engineering contractorFire sprinkler contractorPlumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 930-5522
CA-CSLB 858166 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 319-3367
CA-CSLB 508994 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 917-9707
CA-CSLB 764181 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (909) 240-8028
CA-CSLB 632348 · B C36 +1General contractorPlumberTile contractor
License activechecked Oct 19, 2026
Ontario, CA · (626) 827-2720
CA-CSLB 817808 · C36Plumber
License activechecked Oct 19, 2026
Ontario, CA · (213) 949-4202
CA-CSLB 1017796 · A C10 +3General engineering contractorElectricianHeating and air conditioning+2
License activechecked Oct 19, 2026
Ontario, CA · (909) 938-0332
CA-CSLB 1030564 · C36Plumber
License activechecked Oct 19, 2026