Licensed Plumbing (C-36) contractors in Mill Valley, CA

The California Contractors State License Board (CSLB) lists 5 Plumbing (C-36) contractors in Mill Valley, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 8, 2026.

5 contractors

1. Delta T Plumbing

   Mill Valley, CA · CSLB #1122448 · as of October 8, 2026
   Active · clear
2. Dill Plumbing Company

   Mill Valley, CA · CSLB #980312 · as of October 8, 2026
   Active · clear
3. Innovative Piping Systems

   Mill Valley, CA · CSLB #728645 · as of October 8, 2026
   Active · clear
4. Petersen Plumbing Services INC

   Mill Valley, CA · CSLB #932251 · as of October 8, 2026
   Active · clear
5. Zak Plumbing CO

   Mill Valley, CA · CSLB #654608 · as of October 8, 2026
   Active · clear

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Data sourced from the California Contractors State License Board (CSLB), current as of October 8, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.