Contractor License Proof

Guardian Firestop and Insulation LLC

Licensed

Verified against CSLB on · View on CSLB

License details

License number
1125232
Status
Active
Classifications
C-2 · Insulation and Acoustical
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
August 16, 2024 – August 31, 2026

Business

  • (925) 449 7413 (CSLB public record)
  • 1453 REGINALD COURT, Livermore, CA 94550Alameda County

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Frequently asked questions

Is Guardian Firestop and Insulation LLC licensed in California?

Yes. Guardian Firestop and Insulation LLC holds an active California state contractor license (CSLB #1125232), verified against the CSLB public record on June 17, 2026.

What is Guardian Firestop and Insulation LLC's CSLB license number?

Guardian Firestop and Insulation LLC's California contractor license number is 1125232. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.

What kind of work is Guardian Firestop and Insulation LLC licensed for?

Guardian Firestop and Insulation LLC is classified under Insulation and Acoustical (C-2) by the CSLB.

How do I verify Guardian Firestop and Insulation LLC's license myself?

Look up license #1125232 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of June 17, 2026.

Verify it yourself: How to verify a California contractor license · Look up #1125232 on CSLB

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See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.