Rialto Municipal Code Chapter 18.61 (Design Guidelines), specifically section 18.61.170 Fences and Walls, governs residential fence and wall heights in zoning districts. Standard California municipal practice limits front-yard fences to 3-4 feet and side/rear yards to 6 feet; anything taller requires a building permit per the California Building Code (Title 24 CCR) adopted in Rialto Code Title 15.
Rialto Code Chapter 18.06 establishes residential zoning standards, with fence and wall design rules consolidated in Chapter 18.61, section 18.61.170. Per the California Building Code (CBC) Section 105.2 as adopted in Rialto Code Title 15, fences not over 7 feet high are generally exempt from a building permit, but Rialto's zoning regulations impose lower height caps. Corner-lot visibility triangles at intersections are required to keep sight distance clear under Rialto Code Title 10 (Vehicles and Traffic) and the city's zoning design guidelines. Walls over 7 feet, or any retaining wall over 4 feet (measured from bottom of footing), require a building permit per CBC Section 105.2 exception 3. Contact Building & Safety (909-820-2505) before constructing fences above zoning limits.
Fences exceeding zoned height without a variance or building permit are zoning violations enforced by Rialto Community Compliance (Title 18 Chapter 18.03 administration). Violators receive a notice to correct and may face administrative citations and required removal at owner expense.
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