Showing ordinances that apply to Mount Sinai, NY
Mount Sinai is an unincorporated community (population 11,623) in Suffolk County, New York. Because Mount Sinai is not an incorporated city, it does not have its own municipal code. Instead, Suffolk County ordinances apply directly to properties here. The lot coverage limits rules below are the ones that govern your area.
Lot coverage in Suffolk County typically limited to 20-35% of lot area depending on town and zoning district. Gross floor area (GFA) limits also apply in East End towns to prevent McMansions.
Town of Brookhaven A Residential allows 25% lot coverage by buildings. Town of Islip Residence B allows up to 30% coverage. Town of Huntington R-10 allows 25% coverage. Town of Southampton applies a Gross Floor Area (GFA) formula: 10% of lot area plus 1,600 sq ft, capped at 12,000 sq ft. Town of East Hampton 255-11-11 applies a similar GFA schedule tied to lot size. Lot coverage typically excludes pervious patios and walks under 2 feet, but includes decks, pools, and accessory structures in most towns.
Exceeding coverage requires ZBA variance. Violations result in stop-work orders, denial of CO, and fines $250-$1,000 per day.
See how Mount Sinai's lot coverage limits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.