California contractor license
WARREN R CHRISTIANSON
- B General Building
WARREN R CHRISTIANSON is a B General Building contractor in Columbia, Tuolumne County, licensed in California for 49 years (since 1977). As of Jan 22, 2026, the license is active with an expiration date of Sep 30, 2026 on record and a license bond is on file.
WARREN R CHRISTIANSONB General Building · checked Jan 22, 2026
ActiveLicense number#344886
Licensed sinceSep 30, 1977
Years licensed49 years
Expiration on recordSep 30, 2026
City and countyColumbia, Tuolumne 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 Jan 22, 2026.