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
24

Ace Pelizon Plumbing

Covina, CA · (626) 331-0701

CA-CSLB 1154407 · C10 C20 +2ElectricianHeating and air conditioningPlumber+1
License activechecked Oct 24, 2026
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25

Acosta Pipeline Inc

Ontario, CA · (626) 383-2431

CA-CSLB 1064810 · A C36General engineering contractorPlumber
License activechecked Oct 24, 2026
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35

Allyn Bruce Plumbing Inc

Pomona, CA · (909) 392-8403

CA-CSLB 245042 · C16 C20 +1Fire sprinkler contractorHeating and air conditioningPlumber
License activechecked Oct 24, 2026
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38

Am Best Construction

Brea, CA · (714) 323-3001

CA-CSLB 1027623 · B C10 +2General contractorElectricianHeating and air conditioning+1
License activechecked Oct 24, 2026
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39

Am Plumbing

Covina, CA · (626) 210-7831

CA-CSLB 1146344 · C36Plumber
License activechecked Oct 24, 2026
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40

American Cpl Inc

Yorba Linda, CA · (714) 300-8114

CA-CSLB 1124230 · C34 C36General engineering contractorPlumber
License activechecked Oct 24, 2026
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