New York, NY Swimming Pools & Spas: Fencing Requirements (2026)

Pool barrier requirements in NYC are set by Section BC 3109 of the NYC Building Code (codified within Title 28 of the Administrative Code) and supplemented by Article 165 of the NYC Health Code (24 RCNY Health Code §165) for sanitary and operational requirements. Section BC 3109.1 establishes applicability; BC 3109.4 governs public pool enclosures; and BC 3109.5 governs private residential pool barriers. For private pools, the barrier must be at least 48 inches high measured on the outside (BC 3109.5.1), with vertical clearance at the bottom no greater than 2 inches and openings that do not pass a 4-inch-diameter sphere (BC 3109.5.1.1). Chain-link mesh openings cannot exceed 2-1/4 inches square unless slats reduce the opening to 1-3/4 inches. Pedestrian gates must be self-closing and self-latching and open outward; the latch must be at least 40 inches above grade and on the pool side. When the latch is less than 54 inches above grade, openings within 18 inches of the latch cannot pass a 1/2-inch sphere. Above-ground residential pools 4 feet or less in depth and not exceeding 500 square feet of surface area, accessory to a one- or two-family home, may be exempt from certain barrier and alarm provisions when the structure itself meets the height requirements. Pool installation in NYC also requires a Department of Buildings permit and, for residential pools serving multiple families, DOHMH oversight under Health Code Article 165.