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
44

G L Contractors Inc

LA Puente, CA · (626) 786-5565

CA-CSLB 1002001 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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45

G T R Industries Inc

Orange, CA · (714) 632-8646

CA-CSLB 928117 · C16 C34Fire sprinkler contractorGeneral engineering contractor
License activechecked Oct 24, 2026
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46

G & Z Fire LLC

LA Puente, CA · (626) 461-4158

CA-CSLB 1045930 · C16Fire sprinkler contractor
License activechecked Oct 24, 2026
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51

Gonzalez Fire Protection

Moreno Valley, CA · (951) 221-2580

CA-CSLB 1092678 · C16 C35Fire sprinkler contractorDrywall, plaster and insulation
License activechecked Oct 24, 2026
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53

H P L Mechanical Inc

Santa Ana, CA · (714) 541-0220

CA-CSLB 308208 · B C4 +6General contractorPlumberFire sprinkler contractor+2
License activechecked Oct 24, 2026
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54

Harry Pro Services

Fullerton, CA · (714) 240-0500

CA-CSLB 764272 · B C4 +7General contractorPlumberElectrician+2
License activechecked Oct 24, 2026
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55

Hickman C R & Co

Azusa, CA · (626) 442-5626

CA-CSLB 433084 · A ASB +10General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+2
License activechecked Oct 24, 2026
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56

Hickman & Son Mechanical LLC

Azusa, CA · (626) 442-5626

CA-CSLB 451069 · A ASB +10General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+2
License activechecked Oct 24, 2026
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57

Hood Pacific Contractors Inc

Tustin, CA · (949) 200-7005

CA-CSLB 939862 · B C12 +6General contractorExcavation, grading and pavingFire sprinkler contractor+2
License activechecked Oct 24, 2026
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58

Hu Fire Protection Inc

Baldwin Park, CA · (626) 397-9771

CA-CSLB 1029990 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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59

Huante Mike L Jr

Hacienda Heights, CA · (323) 864-3238

CA-CSLB 676834 · C16Fire sprinkler contractor
License activechecked Oct 24, 2026
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60

Hunt's Fire Protection

Fullerton, CA · (714) 915-2074

CA-CSLB 553703 · C16 C34Fire sprinkler contractorGeneral engineering contractor
License activechecked Oct 24, 2026
CallDetails