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

Plumbers in Walnut, CA

21 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
02

A-1 Rooter

Covina, CA · (626) 332-4810

CA-CSLB 840421 · C36Plumber
License activechecked Oct 24, 2026
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04

A E D Contractors

Diamond Bar, CA · (909) 374-2597

CA-CSLB 441036 · A B +2General engineering contractorGeneral contractorElectrician+1
License activechecked Oct 24, 2026
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05

A L D C L a Inc

Covina, CA · (818) 446-6651

CA-CSLB 616269 · A C36 +2General engineering contractorPlumberSwimming pool contractor+1
License activechecked Oct 24, 2026
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06

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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07

Ace Plumbing Co

Diamond Bar, CA · (909) 973-0227

CA-CSLB 785570 · B C36General contractorPlumber
License activechecked Oct 24, 2026
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11

American Infastructure

Covina, CA · (323) 271-4602

CA-CSLB 1030873 · A B +2General engineering contractorGeneral contractorElectrician+1
License activechecked Oct 24, 2026
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14

Aveo Inc

Diamond Bar, CA · (909) 538-9188

CA-CSLB 969881 · A B +3General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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16

B B S Construction Inc

West Covina, CA · (951) 505-3143

CA-CSLB 839266 · A B +3General engineering contractorGeneral contractorFlooring contractor+2
License activechecked Oct 24, 2026
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19

Baldwin Builders

Covina, CA · (909) 599-0033

CA-CSLB 992380 · ASB B +5Asbestos and hazardous materials abatementGeneral contractorPlumber+2
License activechecked Oct 24, 2026
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20

Big Smile Plumbing

Covina, CA · (510) 470-9990

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