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
161

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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164

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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165

Ortiz Fire

City of Industry, CA · (626) 330-9819

CA-CSLB 906038 · C16Fire sprinkler contractor
License activechecked Oct 24, 2026
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167

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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171

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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172

Solepacific

Anaheim, CA · (714) 577-0070

CA-CSLB 1000609 · B C16General contractorFire sprinkler contractor
License activechecked Oct 24, 2026
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177

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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