NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors
Plumbers in Diamond Bar, CA
29 licensed plumbers · every license checked against the issuer's file
More cities in California
61Pomona, CA · (626) 281-1499
CA-CSLB 562221 · C36Plumber
License activechecked Oct 24, 2026
Upland, CA · (909) 982-7999
CA-CSLB 784495 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
Pomona, CA · (626) 221-0724
CA-CSLB 1126773 · C36Plumber
License activechecked Oct 24, 2026
Pomona, CA · (626) 523-1056
CA-CSLB 1056519 · C36Plumber
License activechecked Oct 24, 2026
Walnut, CA · (909) 978-0400
CA-CSLB 245451 · A B +4General engineering contractorGeneral contractorConcrete contractor+2
License activechecked Oct 24, 2026
Walnut, CA · (626) 833-4446
CA-CSLB 1005582 · C36Plumber
License activechecked Oct 24, 2026
Pomona, CA · (626) 497-4482
CA-CSLB 1145652 · C36Plumber
License activechecked Oct 24, 2026
Pomona, CA · (909) 643-8150
CA-CSLB 1095209 · C55Plumber
License activechecked Oct 24, 2026
Pomona, CA · (909) 236-4109
CA-CSLB 1157446 · C36Plumber
License activechecked Oct 24, 2026
Hacienda Heights, CA · (626) 696-9757
CA-CSLB 1100437 · C36Plumber
License activechecked Oct 24, 2026
Montclair, CA · (626) 786-4999
CA-CSLB 977502 · C36Plumber
License activechecked Oct 24, 2026
Chino Hills, CA · (626) 650-3003
CA-CSLB 1045621 · B C36General contractorPlumber
License activechecked Oct 24, 2026
LA Habra, CA · (323) 385-8763
CA-CSLB 419811 · B C36General contractorPlumber
License activechecked Oct 24, 2026
Covina, CA · (626) 332-4810
CA-CSLB 840421 · C36Plumber
License activechecked Oct 24, 2026
Ontario, CA · (909) 758-6237
CA-CSLB 1047486 · C36Plumber
License activechecked Oct 24, 2026
Placentia, CA · (714) 572-9471
CA-CSLB 907278 · C36Plumber
License activechecked Oct 24, 2026
LA Puente, CA · (626) 478-5001
CA-CSLB 503177 · B C10 +1General contractorElectricianPlumber
License activechecked Oct 24, 2026
Covina, CA · (626) 967-3036
CA-CSLB 825130 · C36Plumber
License activechecked Oct 24, 2026
LA Habra, CA · (714) 602-0001
CA-CSLB 978639 · B C10 +2General contractorElectricianPlumber+1
License activechecked Oct 24, 2026
Covina, CA · (818) 446-6651
CA-CSLB 616269 · A C36 +2General engineering contractorPlumberSwimming pool contractor+1
License activechecked Oct 24, 2026