Licensed Contractors in Sonoma, California

All license data is sourced from the California Contractors State License Board (CSLB). Last data update: April 05, 2026.

Contractors by Trade

Building (201)
Electrical (48)
Landscaping (36)
Painting (35)
Plumbing (27)
Limited (27)
HVAC (21)
Welding (10)
Earthwork (9)
Fire (9)
Roofing (8)
Solar (3)
Wine County Hvac Suspended
License #931241 C-20 Sonoma, CA Est. 2009
Rozanski Design Suspended
License #963723 C-27 Sonoma, CA Est. 2011
Coleman Kane General Contractor Suspended
License #998212 B Sonoma, CA Est. 2014
Westwood Builders Suspended
License #1006407 B Sonoma, CA Est. 2015
Stancil Studios Inc Suspended
License #1008953 C-33 Sonoma, CA Est. 2015
Valsecchi Construction Suspended
License #1053052 B Sonoma, CA Est. 2019
Olhava Plumbing Suspended
License #1125371 C-36 Sonoma, CA Est. 2024

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Licensing Resources

How to verify a contractor license
Deposit and payment rules for California contracts
Home improvement contract requirements

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