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
03

Dmg Fire Protection

Ontario, CA · (626) 548-8663

CA-CSLB 1062041 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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08

Hci Sprinkler Inc

Ontario, CA · (909) 628-7773

CA-CSLB 1005968 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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09

Hci Systems Inc

Ontario, CA · (909) 628-7773

CA-CSLB 905493 · C7 C10 +1ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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10

Jn Construction Inc

Ontario, CA · (323) 378-0109

CA-CSLB 1001396 · A B +4General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 19, 2026
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11

Jnsd Construction Inc

Ontario, CA · (323) 378-0109

CA-CSLB 1080741 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 19, 2026
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14

Champion Fire

Rancho Cucamonga, CA · (909) 483-9789

CA-CSLB 788711 · C16Fire sprinkler contractor
License activechecked Oct 19, 2026
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16

Jpm Fire Protection

Rancho Cucamonga, CA · (909) 224-3812

CA-CSLB 1141834 · C16Fire sprinkler contractor
License activechecked Oct 19, 2026
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20

Acer Fire Protection Inc

Montclair, CA · (626) 224-7800

CA-CSLB 1047478 · A B +1General engineering contractorGeneral contractorFire sprinkler contractor
License activechecked Oct 19, 2026
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