Licensed Solar (C-46) contractors in Concord, CA

The California Contractors State License Board (CSLB) lists 2 Solar (C-46) contractors in Concord, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

2 contractors

1. Frederick Von Stieff

   Concord, CA · CSLB #1079483 · as of June 27, 2026
   Active · clear
2. E C O Solar

   Concord, CA · CSLB #899476 · as of June 27, 2026
   Suspended · workers' comp

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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.