Height caps are set per zoning district. The RS single-family district limits buildings to 35 feet. Accessory structures are capped at 20 feet, and no building may exceed its district height limit except for specific exempt features.
Under Zoning Code 25-4-20, no building may exceed its zoning district height limit. Section 25-5-4 sets the RS single-family district height limit at 35 feet; other districts set their own limits. Accessory structures are capped at 20 feet unless otherwise specified (25-4-23). Section 25-4-22 exempts certain features — chimneys, spires, water tanks, antennae, and flag poles — up to ten feet above the limit, and solar/energy devices up to eight feet above. These limits apply island-wide because the County is the only local government regulating land use.
Exceeding the district height limit is a zoning violation; existing over-height structures may not be increased further, and new work must comply or obtain a variance.
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