California unincorporated profile
Outside the boundaries of incorporated cities and towns, the Calaveras County government is the planning and permitting lead agency. That means county zoning, county building codes, and county environmental review apply directly — without a separate city layer. The county rules most likely to catch a project applicant off guard are listed below.
These Calaveras County rules apply directly to projects in unincorporated areas of the county, with no city-level overlay.
The county's oak ordinance draws a distinction between multiple size categories of protected trees, with stricter replacement requirements for the larger specimens — removal of either type on private property requires a county permit and a replanting plan.
Projects within the area burned by the Butte Fire face heightened scrutiny for erosion, habitat recovery, and soil stability — check whether your parcel falls in the burn perimeter before scoping your environmental review.
Agricultural land under a Williamson Act contract is locked into farming use for a long contract term — project designs that assume flexibility should check the county's contract maps before committing to a site plan.
Historic mining operations left legacy soil issues across the county — significant earthwork on a parcel with a mining history should include a Phase I environmental assessment before grading begins.
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Screen an addressSource: Headlands Environmental — environmental site screening for California. Rules summarized from publicly available county codes and planning documents; project review counts indexed from the State Clearinghouse. For authoritative requirements, consult Calaveras County directly.