San Bernardino County allows privacy fences up to 6 feet in side and rear yards and 42 inches in front yards in most residential zones. Fences under 6 feet typically do not require a building permit. Barbed wire is prohibited in residential zones.
San Bernardino County Development Code regulates fence heights by zone and location. In residential zones, solid privacy fences are allowed up to 6 feet in rear and side yards. Front-yard fences are limited to 42 inches (3.5 feet) in most residential zones. Fences on corner lots must comply with sight-triangle requirements to maintain visibility at intersections. Fences under 6 feet and not made of masonry generally do not require a building permit. Masonry walls and fences over 6 feet require a building permit and may require engineering. Prohibited materials in residential zones include barbed wire, razor wire, and electrified fencing. Chain link fencing is permitted but some planned communities restrict it through CC&Rs. The finished side of the fence should face the neighbor or street.
Building a fence without a required permit may result in a stop-work order and requirement to obtain a retroactive permit. Non-compliant fences may be cited under the Development Code with administrative penalties of $100-$500 per day.
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