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

Fire sprinkler contractors in Diamond Bar, CA

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

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553 listingsHow results are ordered
41

Bali Construction Inc

So El Monte, CA · (626) 442-8003

CA-CSLB 524540 · A C4 +2General engineering contractorPlumberFire sprinkler contractor
License activechecked Oct 24, 2026
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47

Carri Construction

Orange, CA · (714) 998-1101

CA-CSLB 332960 · A B +1General engineering contractorGeneral contractorFire sprinkler contractor
License activechecked Oct 24, 2026
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49

Chien Hung Yuan

Chino, CA · (909) 393-9798

CA-CSLB 826710 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 24, 2026
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53

Dmg Fire Protection

Ontario, CA · (626) 548-8663

CA-CSLB 1062041 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 24, 2026
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55

Doan's Construction

Anaheim, CA · (805) 216-4599

CA-CSLB 678183 · A B +2General engineering contractorGeneral contractorElectrician+1
License activechecked Oct 24, 2026
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59

Falcon Hill Construction Inc

Anaheim, CA · (714) 777-2807

CA-CSLB 814672 · A B +3General engineering contractorGeneral contractorFire sprinkler contractor+2
License activechecked Oct 24, 2026
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60

Fire Connection

Whittier, CA · (562) 695-7356

CA-CSLB 977871 · C16Fire sprinkler contractor
License activechecked Oct 24, 2026
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