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
101

Fire Mike's

LA Mirada, CA · (714) 955-8717

CA-CSLB 948435 · C16Fire sprinkler contractor
License activechecked Oct 24, 2026
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104

Fire Service Corp

Anaheim, CA · (800) 767-3473

CA-CSLB 952180 · C10 C16 +1ElectricianFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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108

G C Contractor Inc

South El Monte, CA · (626) 786-5607

CA-CSLB 961796 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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110

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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111

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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113

Gf Construction

South El Monte, CA · (626) 423-8063

CA-CSLB 975442 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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118

Hci Sprinkler Inc

Ontario, CA · (909) 628-7773

CA-CSLB 1005968 · C10 C16ElectricianFire sprinkler contractor
License activechecked Oct 24, 2026
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119

Hci Systems Inc

Ontario, CA · (909) 628-7773

CA-CSLB 905493 · C7 C10 +1ElectricianFire sprinkler contractor
License activechecked Oct 24, 2026
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120

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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