Licensed Insulation & Acoustical (C-2) contractors in San Jose, CA

The California Contractors State License Board (CSLB) lists 12 Insulation & Acoustical (C-2) contractors in San Jose, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 6, 2026.

12 contractors

1. Alpha HVAC & Electrical

   San Jose, CA · CSLB #1060833 · as of October 6, 2026
   Active · clear
2. Bay Area Insulation Services INC

   San Jose, CA · CSLB #1053575 · as of October 6, 2026
   Active · clear
3. Bay Weatherization & Insulation

   San Jose, CA · CSLB #777747 · as of October 6, 2026
   Active · clear
4. Richard Castellanos

   San Jose, CA · CSLB #356648 · as of October 6, 2026
   Active · clear
5. California Insulation Contractor INC DBA Central California

   San Jose, CA · CSLB #1018810 · as of October 6, 2026
   Active · clear
6. HVAC Guru

   San Jose, CA · CSLB #1031326 · as of October 6, 2026
   Active · clear
7. Ideal Attic Insulation INC

   San Jose, CA · CSLB #1095944 · as of October 6, 2026
   Active · clear
8. MGT Insulation INC

   San Jose, CA · CSLB #1128483 · as of October 6, 2026
   Active · clear
9. S B I Interiors INC

   San Jose, CA · CSLB #983778 · as of October 6, 2026
   Active · clear
10. Eric Stark Interiors INC

    San Jose, CA · CSLB #591877 · as of October 6, 2026
    Active · clear
11. Superior Insulation

    San Jose, CA · CSLB #1146932 · as of October 6, 2026
    Active · clear
12. Thermal Insulation

    San Jose, CA · CSLB #1162053 · as of October 6, 2026
    Active · clear

See all Insulation & Acoustical (C-2) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of October 6, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.