California unincorporated profile
Outside the boundaries of incorporated cities and towns, the Plumas 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 Plumas County rules apply directly to projects in unincorporated areas of the county, with no city-level overlay.
Most of Plumas County is federally owned, and projects near national forest boundaries frequently trigger a federal environmental review process alongside California's — adding a parallel approval track that can extend timelines significantly.
The fire that devastated parts of the county, including the historic town of Greenville, left a burn scar that elevates erosion hazards, debris flow risks, and cultural resource sensitivities — all of which factor into permits for new construction and rebuilding in the affected area.
Large portions of the county are zoned for timber production, and converting those parcels to residential or other uses requires navigating timber land conversion rules that go well beyond standard county zoning processes.
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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 Plumas County directly.