How many glazing contractors are licensed in California?

California has 3,191 contractors with a C17 (Glazing) license from the Contractors State License Board. 3,053 (96%) hold active licenses. SiteVetter checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a C17 license cover in California?

A California C17 license covers glazing contractors for windows, glass doors, and glass installations. Any contractor performing glazing work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of glazing contractors have federal violations?

4.1% of California glazing contractors (131 out of 3,191) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

Verify Glazing Contractors (C17) - Page 5 | CSLB + Federal Check

How to Verify a Glazing Contractor (C17) in California

California requires all contractors performing glazing work valued at $500+ to hold a valid CSLB C17 license. Of the 3,191 licensed glazing contractors in the state, 96% currently hold active licenses and 4.1% have at least one federal compliance record.

Manual vetting takes 45+ minutes per contractor and routinely misses violations in databases most people don't know to check. SiteVetter runs CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, and EPA environmental records in seconds—creating a timestamped compliance artifact.

Verification Checklist for Glazing Contractors

Verify the contractor license is active and in good standing
Request proof of insurance and bonding
Get at least 3 written quotes before selecting a contractor
Check federal databases: SAM.gov, OSHA, DOL, and EPA records
Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Verification Matters for Glazing Work

Under California's "Controlling Employer" doctrine, general contractors face liability for subcontractor safety violations. For glazing work specifically, 4.1% of licensed contractors have federal records that a standard CSLB license check wouldn't reveal. SiteVetter's 5-database check catches what a single-source verification misses.

Glazing Contractor Verification - Page 5

About C17 License

Glazing Contractors

How to Verify a Glazing Contractor (C17) in California

Verification Checklist for Glazing Contractors

Why Verification Matters for Glazing Work