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

Fire sprinkler contractors in Ontario, CA

12 licensed fire sprinkler contractors · every license checked against the issuer's file

More cities in California

San Francisco 96Los Angeles 60Glendale 46San Jose 35Bakersfield 30Sacramento 27Anaheim 24Burbank 23Oakland 22San Diego 22Fresno 21Santa Rosa 21Van Nuys 18Irvine 17Riverside 16Santa Ana 16
424 listingsHow results are ordered
22

Allyn Bruce Plumbing Inc

Pomona, CA · (909) 392-8403

CA-CSLB 245042 · C16 C20 +1Fire sprinkler contractorHeating and air conditioningPlumber
License activechecked Oct 19, 2026
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23

Ateck Construction Inc

Chino, CA · (909) 393-9798

CA-CSLB 845160 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 19, 2026
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26

Buccaneer Builders

Riverside, CA · (951) 640-8542

CA-CSLB 718006 · A B +3General engineering contractorGeneral contractorPlumber+1
License activechecked Oct 19, 2026
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29

Chen Pang Chiu

Montclair, CA · (626) 224-7800

CA-CSLB 514113 · A B +1General engineering contractorGeneral contractorFire sprinkler contractor
License activechecked Oct 19, 2026
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30

Chien Hung Yuan

Chino, CA · (909) 393-9798

CA-CSLB 826710 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 19, 2026
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32

Continental Plumbing Inc

Mira Loma, CA · (951) 360-8300

CA-CSLB 399073 · C4 C16 +3PlumberFire sprinkler contractorGeneral engineering contractor+1
License activechecked Oct 19, 2026
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33

Curtis Vance

Rancho Cucamonga, CA · (909) 438-5822

CA-CSLB 928208 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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34

D C Electronics Inc

Riverside, CA · (951) 682-5962

CA-CSLB 451087 · C7 C10 +1ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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36

Fire Alliance Inc

Rancho Cucamonga, CA · (909) 552-1161

CA-CSLB 886531 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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37

Fire Tech

Chino, CA · (909) 217-4624

CA-CSLB 998433 · B C16General contractorFire sprinkler contractor
License activechecked Oct 19, 2026
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