California contractor license
WILLIAM TRENHOLM
- C-6 Cabinet, Millwork And Finish Carpentry
WILLIAM TRENHOLM is a C-6 Cabinet, Millwork And Finish Carpentry contractor in Rohnert Park, Sonoma County, licensed in California for 4 years (since 2022). As of Feb 25, 2026, state records list the license as suspended, no license bond is on file, and permit records show 1–10 permitted projects in the last 3 years.
WILLIAM TRENHOLMC-6 Cabinet, Millwork And Finish Carpentry · checked Feb 25, 2026
SuspendedLicense number#1090337
Licensed sinceApr 20, 2022
Years licensed4 years
Expiration on recordApr 30, 2026
City and countyRohnert Park, Sonoma County
License bondNot on file
Projects1–10 permitted projects in the last 3 years
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Source: California Contractors State License Board (CSLB) and City of Los Angeles permit records. Last updated Feb 25, 2026.