California contractor license
ROBERT W VON AHN PLUMBING & ELECTRICAL CONTRACTOR
- C10 Electrical
- C36 Plumbing
ROBERT W VON AHN PLUMBING & ELECTRICAL CONTRACTOR is a C10 Electrical and C36 Plumbing contractor in Petaluma, Sonoma County, licensed in California for 49 years (since 1977). As of Mar 11, 2026, the license is active with an expiration date of Feb 28, 2027 on record and a license bond is on file.
ROBERT W VON AHN PLUMBING & ELECTRICAL CONTRACTORC10 Electrical · C36 Plumbing · checked Mar 11, 2026
ActiveLicense number#334286
Licensed sinceApr 19, 1977
Years licensed49 years
Expiration on recordFeb 28, 2027
City and countyPetaluma, Sonoma County
License bondOn file
ProjectsNone on file
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Source: California Contractors State License Board (CSLB) and City of Los Angeles permit records. Last updated Mar 11, 2026.