NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

Plumbers in Upland, CA

47 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 21–40How results are ordered
23

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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32

Ruvico Inc

Ontario, CA · (800) 538-8426

CA-CSLB 1021363 · C36Plumber
License activechecked Oct 24, 2026
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33

Ryan Fire Protection

Alta Loma, CA · (909) 730-0329

CA-CSLB 781412 · C16 C36Fire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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35

Sewer Bee

Rancho Cucamonga, CA · (909) 373-5014

CA-CSLB 1155568 · A B +3General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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39

Spec Construction Co Inc

Ontario, CA · (909) 947-4601

CA-CSLB 419626 · A B +11General engineering contractorGeneral contractorPlumber+2
License activechecked Oct 24, 2026
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