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
03

Jnsd Construction Inc

Ontario, CA · (323) 378-0109

CA-CSLB 1080741 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 24, 2026
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04

Kao Brian Yawching

Ontario, CA · (626) 347-3434

CA-CSLB 897876 · B C10 +2General contractorElectricianHeating and air conditioning+1
License activechecked Oct 24, 2026
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07

Northstar Phac Inc

Ontario, CA · (866) 744-6192

CA-CSLB 916254 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
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11

Pisces Plumbing

Ontario, CA · (909) 552-3915

CA-CSLB 1133446 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
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13

Pro Tech Plumbing

Ontario, CA · (909) 988-7272

CA-CSLB 915091 · C36 C42PlumberExcavation, grading and paving
License activechecked Oct 24, 2026
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16

Ruvico Inc

Ontario, CA · (800) 538-8426

CA-CSLB 1021363 · C36Plumber
License activechecked Oct 24, 2026
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