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 141–160How results are ordered
143

E L M Construction Co

LA Puente, CA · (626) 917-7247

CA-CSLB 901559 · A B +3General engineering contractorGeneral contractorConcrete contractor+2
License activechecked Oct 24, 2026
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145

Eagle Air Co

Chino, CA · (714) 882-9580

CA-CSLB 1099959 · C4 C20PlumberHeating and air conditioning
License activechecked Oct 24, 2026
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146

Econo Air

Placentia, CA · (800) 503-2666

CA-CSLB 445220 · C2 C10 +3Drywall, plaster and insulationElectricianHeating and air conditioning+2
License activechecked Oct 24, 2026
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149

Elser Plumbing

Glendora, CA · (626) 963-6767

CA-CSLB 892891 · B C36General contractorPlumber
License activechecked Oct 24, 2026
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150

Enetech Incorporated

Brea, CA · (714) 255-2939

CA-CSLB 967408 · B C20 +3General contractorHeating and air conditioningPlumber+1
License activechecked Oct 24, 2026
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152

Erick Allen Inc

Brea, CA · (714) 524-2406

CA-CSLB 630635 · B C6 +3General contractorCarpenterElectrician+2
License activechecked Oct 24, 2026
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