7 rules for unincorporated Sierra County, California.
Verified from official government sources
Unincorporated Sierra County's zoning code (Title 15) contains no chapter that sets a numeric fence height. The county's adopted building code defers fence-permit thresholds to California Building Code Section 105.2, and a fence's placement is governed by the yard/setback rules of the parcel's zoning district.
In unincorporated Sierra County, fence permits follow the California Building Code Section 105.2 exemptions that the county adopts in SCC 12.04.030. Light-material fences up to 7 feet and masonry fences up to 5 feet 9 inches are generally exempt, but exempt fences must still meet zoning, floodplain, and wildfire standards.
Sierra County's zoning code does not address shared boundary fences, so disputes are governed by California Civil Code Section 841, the Good Neighbor Fence Act. Adjoining owners are presumed equally responsible for the reasonable cost of a dividing fence, and a 30-day written notice is required before incurring costs.
Sierra County treats retaining walls separately from fences. The grading-setback section (SCC 12.08.520) expressly excludes fences and retaining walls from its slope-setback rules, and retaining walls are reviewed under the adopted California Building Code; the building code generally requires a permit for walls retaining over 4 feet or surcharged loads.
Sierra County has no dedicated fence chapter, so fences must satisfy the general yard/setback rules of the parcel's zoning district, the building code's permit and wildfire provisions, and any water-resource setback. Exempt fences must still meet wildfire-material standards under CBC Chapter 7A and CRC Section R327.
Sierra County's zoning code does not list prohibited or required fencing materials, but its building code (SCC 12.04.030) requires even permit-exempt structures to meet the exterior wildfire exposure requirements of CBC Chapter 7A and CRC Section R327, which can restrict combustible fence materials in fire-prone areas.
Sierra County does not prescribe specific fence materials in its zoning code. Wood, chain link, vinyl, metal, and masonry are all generally allowed, subject to the building code's wildfire-material requirements (CBC Chapter 7A / CRC R327 via SCC 12.04.030) and the permit thresholds in CBC Section 105.2.
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