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 1–20How results are ordered
03

Behrco Inc

Placentia, CA · (714) 681-5098

CA-CSLB 1033717 · B C36 +1General contractorPlumberTile contractor
License activechecked Oct 24, 2026
CallDetails
04

Big Smile Plumbing

Covina, CA · (510) 470-9990

CA-CSLB 1078521 · ASB B +1Asbestos and hazardous materials abatementGeneral contractorPlumber
License activechecked Oct 24, 2026
CallDetails
05

Blue Grip Squad Inc

Pomona, CA · (909) 242-5235

CA-CSLB 978154 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
CallDetails
06

Brea Plumbing

Brea, CA · (714) 529-1034

CA-CSLB 765643 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
CallDetails
08

Brio Water Inc

Hacienda Heights, CA · (562) 699-9945

CA-CSLB 1112588 · C55Plumber
License activechecked Oct 24, 2026
CallDetails
10

Brycoll

Yorba Linda, CA · (714) 743-8222

CA-CSLB 537431 · B C36General contractorPlumber
License activechecked Oct 24, 2026
CallDetails
12

C H Plumbing

Chino, CA · (951) 965-7624

CA-CSLB 1060528 · C36Plumber
License activechecked Oct 24, 2026
CallDetails
15

Caliagua Inc

Fullerton, CA · (866) 416-4214

CA-CSLB 359728 · A B +2General engineering contractorGeneral contractorPlumber
License activechecked Oct 24, 2026
CallDetails