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

The California Contractors State License Board (CSLB) lists 3 Insulation & Acoustical (C-2) contractors in Upland, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 6, 2026.

3 contractors

1. Pinnacle Drywall

   Upland, CA · CSLB #1131293 · as of October 6, 2026
   Active · clear
2. True Heat Solutions

   Upland, CA · CSLB #1038643 · as of October 6, 2026
   Active · clear
3. True Heat Solutions Norcal

   Upland, CA · CSLB #1068188 · as of October 6, 2026
   Suspended · bond

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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.