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 August 12, 2026.

2 contractors

1. Frederick Von Stieff

   Concord, CA · CSLB #1079483 · as of August 12, 2026
   Active · clear
2. E C O Solar

   Concord, CA · CSLB #899476 · as of August 12, 2026
   Suspended · workers' comp

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Data sourced from the California Contractors State License Board (CSLB), current as of August 12, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.