California contractor license
WINFIELD GRADING
- C12 Earthwork And Paving
WINFIELD GRADING is a C12 Earthwork And Paving contractor in Copperopolis, Calaveras County, licensed in California for 42 years (since 1984). As of Feb 25, 2026, the license is active with an expiration date of Apr 30, 2028 on record and a license bond is on file.
WINFIELD GRADINGC12 Earthwork And Paving · checked Feb 25, 2026
ActiveLicense number#462758
Licensed sinceSep 14, 1984
Years licensed42 years
Expiration on recordApr 30, 2028
City and countyCopperopolis, Calaveras 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 Feb 25, 2026.