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 June 27, 2026.

3 contractors

1. Pinnacle Drywall

   Upland, CA · CSLB #1131293 · as of June 27, 2026
   Active · clear
2. True Heat Solutions

   Upland, CA · CSLB #1038643 · as of June 27, 2026
   Active · clear
3. True Heat Solutions Norcal

   Upland, CA · CSLB #1068188 · as of June 27, 2026
   Active · clear

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Data sourced from the California Contractors State License Board (CSLB), current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.