Fences over 7 feet tall and retaining walls over 4 feet tall require a building permit in Louisville Metro. Permits are obtained through Louisville Metro Codes & Regulations. Fences at or below 7 feet may be installed without a permit but must comply with LDC height, setback, and material standards.
Under Louisville Metro building regulations (implementing the Kentucky Residential Code), a building permit is required for fences exceeding 7 feet in height and retaining walls over 4 feet in height. Permit applications can be submitted online through Louisville Metro's permitting portal or in person at Codes & Regulations. Fences 7 feet or under do not require a permit but must comply with LDC height limits (which top out at 8 feet for privacy fences in rear yards), setback requirements, vision clearance rules, and material standards. Fences in historic preservation districts or design overlay zones require additional review before a permit can be issued. Decorative walls, trellises, and arbors are subject to the same height rules as fences.
Installing a fence requiring a permit without one: additional fees on top of permit cost, possible stop-work or removal order. Non-compliant fences (wrong height, wrong zone): code enforcement citation and order to reduce or remove.
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