Above-ground pools in unincorporated Knox County need a permit and must meet the same 48-inch barrier standard. Critically, the ladder or steps must be lockable, removable, or secured to prevent access, with no openings greater than 4 inches.
Knox County treats above-ground and in-ground pools alike for permitting and barrier rules under the 2018 IRC. For a vinyl-liner above-ground pool, the first inspection verifies the walls are set and bolted, braces are installed per the manufacturer, the concrete footing is in place, soil is stable, and accessory-building setbacks are met. Because the pool wall itself can serve as part of the barrier, the code focuses on securing the point of entry: the ladder or steps must be lockable, removable, or secured to prevent access. A private pool must sit in the side or rear yard as an accessory structure under Zoning Ordinance 4.103.
An above-ground pool with an unsecured ladder or missing permit fails inspection and cannot lawfully be used until corrected.
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See how Knox County's above-ground pools rules stack up against other locations.
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