How many C-2 insulation & acoustical contractors are licensed in California?

California has 1,265 contractors with a C-2 (Insulation & Acoustical) license from the Contractors State License Board. 1,206 (95%) hold active licenses. SiteVetter's C-2 license lookup checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a C-2 license cover in California?

A California C-2 license covers insulation and acoustical contractors for thermal and sound insulation. Any contractor performing insulation & acoustical work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of insulation & acoustical contractors have federal violations?

12.0% of California insulation & acoustical contractors (152 out of 1,265) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

C-2 Insulation & Acoustical Contractors in California - Page 25 | CSLB License Lookup

C-2 Insulation & Acoustical Contractor License Lookup

Use this page when you need a California C-2 license lookup, a list of licensed insulation & acoustical contractors, or a quick screen before assigning insulation & acoustical work to a sub. Each row links to a contractor profile with CSLB status, workers' comp, bond, federal records, and permit checks.

California has 1,265 CSLB C-2 license records for insulation & acoustical contractors. 95% currently hold active licenses and 12.0% have at least one federal compliance record. SiteVetter checks CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, EPA environmental records, and building permits in seconds.

What to Check for C-2 Insulation & Acoustical 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 Federal Records Matter for Insulation & Acoustical Work

For insulation & acoustical work, 12.0% of licensed contractors have federal records that a standard CSLB license check would not reveal. SiteVetter's 6-source lookup gives GCs a faster way to compare subs before bid award, onboarding, or renewal review.

C-2 Insulation & Acoustical Contractors in California - Page 25

CSLB C-2 License Scope

C-2 Insulation & Acoustical Contractor License Records

Related CSLB License Classifications

C-2 Insulation & Acoustical Contractor License Lookup

What to Check for C-2 Insulation & Acoustical Contractors

Why Federal Records Matter for Insulation & Acoustical Work