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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557 listingsHow results are ordered
83

Positive Plumbing Inc

Glendora, CA · (626) 444-4607

CA-CSLB 540754 · B C16 +1General contractorFire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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87

Pumpman Socal

Baldwin Park, CA · (626) 939-0300

CA-CSLB 1024442 · C16 C36 +1Fire sprinkler contractorPlumberSpecialty contractor
License activechecked Oct 24, 2026
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92

Rely-On Technologies

Fullerton, CA · (562) 697-7095

CA-CSLB 506096 · B C16 +1General contractorFire sprinkler contractorSpecialty contractor
License activechecked Oct 24, 2026
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99

Scott Plumbing Inc

Santa Fe Springs, CA · (562) 944-9793

CA-CSLB 813415 · C16 C36Fire sprinkler contractorPlumber
License activechecked Oct 24, 2026
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100

Solepacific

Anaheim, CA · (714) 577-0070

CA-CSLB 1000609 · B C16General contractorFire sprinkler contractor
License activechecked Oct 24, 2026
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