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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552 listingsHow results are ordered
02

I S Firepro

Diamond Bar, CA · (626) 290-1378

CA-CSLB 740006 · C16Fire sprinkler contractor
License activechecked Oct 19, 2026
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06

Chien Scott

Walnut, CA · (626) 278-8933

CA-CSLB 1089712 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 19, 2026
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10

M D I Spray Equipment

Pomona, CA · (626) 705-5797

CA-CSLB 499372 · B C16General contractorFire sprinkler contractor
License activechecked Oct 19, 2026
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12

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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16

Allyn Bruce Plumbing Inc

Pomona, CA · (909) 392-8403

CA-CSLB 245042 · C16 C20 +1Fire sprinkler contractorHeating and air conditioningPlumber
License activechecked Oct 19, 2026
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19

Bni Fireprotection Inc

Placentia, CA · (714) 390-1559

CA-CSLB 1089159 · B C10 +1General contractorElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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20

Brackett Electric Inc

LA Habra Heights, CA · (562) 631-3317

CA-CSLB 500682 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 19, 2026
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