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

Los Angeles 651San Diego 494San Francisco 437San Jose 384Sacramento 242Riverside 208Bakersfield 191Anaheim 181Santa Rosa 157Glendale 156Long Beach 145Fresno 143Van Nuys 134El Cajon 133Escondido 128Oakland 128
Listings 1–20How results are ordered
02

Buccaneer Builders

Riverside, CA · (951) 640-8542

CA-CSLB 718006 · A B +3General engineering contractorGeneral contractorPlumber+1
License activechecked Oct 24, 2026
CallDetails
03

Burke D Mechanical Corp

Norco, CA · (951) 279-7700

CA-CSLB 658944 · B C4 +2General contractorPlumberHeating and air conditioning
License activechecked Oct 24, 2026
CallDetails
05

C H Plumbing

Chino, CA · (951) 965-7624

CA-CSLB 1060528 · C36Plumber
License activechecked Oct 24, 2026
CallDetails
07

Cali Plumbing

Jurupa Valley, CA · (562) 556-7013

CA-CSLB 1106604 · C36Plumber
License activechecked Oct 24, 2026
CallDetails
08

California Industrial

Mira Loma, CA · (951) 361-0040

CA-CSLB 741983 · B C4 +1General contractorPlumberHeating and air conditioning
License activechecked Oct 24, 2026
CallDetails
19

Chien Hung Yuan

Chino, CA · (909) 393-9798

CA-CSLB 826710 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 24, 2026
CallDetails
20

Chino Standard Inc

Chino, CA · (909) 662-1908

CA-CSLB 920479 · C36 C42PlumberExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails