Licensed Plumbing (C-36) contractors in Sonoma, CA

The California Contractors State License Board (CSLB) lists 13 Plumbing (C-36) contractors in Sonoma, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 8, 2026.

13 contractors

1. Big Al's Plumbing

   Sonoma, CA · CSLB #1149646 · as of October 8, 2026
   Active · clear
2. Cottam Enterprises INC

   Sonoma, CA · CSLB #973502 · as of October 8, 2026
   Active · clear
3. Eddie R Plumbing

   Sonoma, CA · CSLB #808283 · as of October 8, 2026
   Active · clear
4. Ferrando's Plumbing & Heating INC

   Sonoma, CA · CSLB #449417 · as of October 8, 2026
   Active · clear
5. Goflow Plumbing INC

   Sonoma, CA · CSLB #1150830 · as of October 8, 2026
   Active · clear
6. Haddly Plumbing

   Sonoma, CA · CSLB #869145 · as of October 8, 2026
   Active · clear
7. Keep It Real Plumbing

   Sonoma, CA · CSLB #1158587 · as of October 8, 2026
   Active · clear
8. Locati Plumbing

   Sonoma, CA · CSLB #1139128 · as of October 8, 2026
   Active · clear
9. Plumb Smart

   Sonoma, CA · CSLB #1126758 · as of October 8, 2026
   Active · clear
10. Steven Raffaini Plumbing And Radiant LLC

    Sonoma, CA · CSLB #916665 · as of October 8, 2026
    Active · clear
11. Sandeen Plumbing LLC

    Sonoma, CA · CSLB #941868 · as of October 8, 2026
    Active · clear
12. Spotless Plumbing

    Sonoma, CA · CSLB #1093556 · as of October 8, 2026
    Active · clear
13. Valley Of The Moon Plumbing LLC

    Sonoma, CA · CSLB #1004026 · 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.