Swimming pool permit rules in St. Louis County, MO — also covering above-ground pools, in-ground pools, and spa installations — set fencing, barrier, alarm, and inspection requirements.
A building permit is required for any swimming or bathing pool exceeding 24 inches deep, 250 sq ft in area, or equipped with a water recirculation system — whether in-ground or above-ground. Setback review by the Zoning Review Section is also required.
Under SLCRO §1115.105.2 and Chapter 1118 (Swimming Pool & Spa Code), the size/depth/recirculation threshold catches virtually all permanent backyard pools. Required documents: site plan showing existing structures and proposed pool, complete construction plans, electrical permits, and backflow-prevention plumbing (in-ground only). Setbacks are checked through Zoning Review at (314) 615-3763.
Stop-work order; double permit fees; up to $1,000 fine per §701.180.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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