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

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424 listingsHow results are ordered
21

Meterman Services Inc

Fullerton, CA · (714) 680-8601

CA-CSLB 902074 · B C6 +3General contractorCarpenterElectrician+2
License activechecked Oct 24, 2026
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24

Ornnell Fire Sprinkler Inc

Grand Terrace, CA · (909) 783-3817

CA-CSLB 656065 · C16 C34Fire sprinkler contractorGeneral engineering contractor
License activechecked Oct 24, 2026
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25

Ortiz Fire

City of Industry, CA · (626) 330-9819

CA-CSLB 906038 · C16Fire sprinkler contractor
License activechecked Oct 24, 2026
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27

Positive Plumbing Inc

Glendora, CA · (626) 444-4607

CA-CSLB 540754 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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31

Royaltech Services

LA Puente, CA · (626) 333-0333

CA-CSLB 638729 · A B +6General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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32

Solepacific

Anaheim, CA · (714) 577-0070

CA-CSLB 1000609 · B C16General contractorFire sprinkler contractor
License activechecked Oct 24, 2026
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37

Tyler Stevens

Fullerton, CA · (714) 870-7117

CA-CSLB 671757 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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