Walls and fences over 6 feet in height require a building permit under Chapter 12.08 (the city's adopted Building Code). Retaining walls over 4 feet, or with a surcharge, require permits regardless of fence height.
Lake Havasu City's Building Code at Chapter 12.08 adopts the 2018 International Residential Code (transitioning to the 2024 IRC effective February 1, 2026). Per IRC §R105, fences over 6 feet require a building permit; below that they are exempt from permits but must still comply with zoning height limits in § 14.06.02. Masonry walls and any retaining wall over 4 feet in unbalanced fill, or supporting a surcharge load such as a vehicle or pool, also require a permit and engineering. Pool enclosure fences specifically must be inspected before the pool may be filled.
Building without a required permit is enforced under § 14.05.06 with stop-work orders and fines up to $500 per day. Unpermitted retaining walls may have to be removed or retrofitted at owner expense.
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Lake Havasu City, AZ
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