California contractor license
DOSHIER-GREGSON INC
- C57 Well Drilling
- C-61 / D21 Machinery And Pumps
DOSHIER-GREGSON INC is a C57 Well Drilling and C-61 / D21 Machinery And Pumps contractor in American Canyon, Napa County, licensed in California for 57 years (since 1969). As of Jan 6, 2026, the license is active with an expiration date of Oct 31, 2026 on record and a license bond is on file.
DOSHIER-GREGSON INCC57 Well Drilling · C-61 / D21 Machinery And Pumps · checked Jan 6, 2026
ActiveLicense number#258826
Licensed sinceAug 4, 1969
Years licensed57 years
Expiration on recordOct 31, 2026
City and countyAmerican Canyon, Napa 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 6, 2026.