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

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
25

H L Construction

LA Puente, CA · (626) 363-3872

CA-CSLB 1006290 · B C36General contractorPlumber
License activechecked Oct 24, 2026
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26

H R Plumbing

Pomona, CA · (323) 394-2411

CA-CSLB 398698 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
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29

Harry Pro Services

Fullerton, CA · (714) 240-0500

CA-CSLB 764272 · B C4 +7General contractorPlumberElectrician+2
License activechecked Oct 24, 2026
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34

High Quality Hce

Rowland Heights, CA · (626) 378-6171

CA-CSLB 1002825 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
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37

Hoag Nick

Covina, CA · (714) 760-8084

CA-CSLB 1038859 · C36Plumber
License activechecked Oct 24, 2026
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