Residential height limits in Suffolk County typically cap principal structures at 35 feet or 2.5 stories. East End towns (Southampton, East Hampton) impose pyramid law restrictions. Accessory structures limited to 15-20 feet.
Town of Brookhaven 85-327 limits principal residential buildings to 35 feet and 2.5 stories. Town of Islip 68-33 caps residential buildings at 35 feet. Town of Southampton 330-11 imposes the pyramid law: no point of a structure may project above a plane drawn at 45 degrees from a line 15 feet above each side property line. Town of East Hampton 255-11-10 similarly applies a 45-degree sky plane restriction. Accessory structures are typically capped at 15 feet (1 story) or 20 feet in some zones. Height is generally measured from average pre-construction grade to midpoint of roof.
Height variances require ZBA area variance. Non-compliant structures subject to removal and $250-$1,000 daily fines until corrected.
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See how Suffolk County's structure height limits rules stack up against other locations.
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