Licensed Contractors in Sonoma, California

All license data is sourced from the California Contractors State License Board (CSLB). Last data update: April 19, 2026.

Contractors by Trade

Building (204)
Electrical (46)
Painting (36)
Landscaping (36)
Plumbing (27)
Limited (27)
HVAC (21)
Welding (10)
Earthwork (9)
Fire (9)
Roofing (8)
Solar (3)
Pioneer Builders Suspended
License #555580 A, C-4 +1 more Sonoma, CA Est. 1989
Stephen Kardum Painting Suspended
License #599749 C-33 Sonoma, CA Est. 1990
El Alamo Landscaping Suspended
License #872018 C-27 Sonoma, CA Est. 2006
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
Stancil Studios Inc Suspended
License #1008953 C-33 Sonoma, CA Est. 2015
Valsecchi Construction Suspended
License #1053052 B Sonoma, CA Est. 2019
Lanning Steel Design Suspended
License #1118025 C-51 Sonoma, CA Est. 2024
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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