Brookhaven, NY Building Setbacks & Zoning: Setback Rules (2026)

Brookhaven Code § 85-239 sets the A Residence 5 District's yards at a front yard depth of not less than 70 feet, two side yards totaling 85 feet with neither side under 35 feet, and a rear yard of at least 80 feet. Section 85-246 sets the larger A Residence 10 District at an 80-foot front yard, side yards totaling 90 feet with neither side under 40 feet, and a rear yard of at least 85 feet. Both districts require a minimum lot area of 200,000 square feet (A Residence 5) or 400,000 square feet (A Residence 10), so these yard depths apply to large estate lots, not typical suburban parcels.

By contrast, § 85-232 sets the D Residence District, Brookhaven's two-family district along primary highway corridors, at a 40-foot front yard (extendable to 50 feet under a street-frontage averaging rule), side yards totaling 30 feet with neither side under 12 feet, and a 30-foot rear yard, on a minimum 15,000-square-foot lot. The Town's standard single-family districts, A Residence, A Residence 1, A Residence 2, B Residence, B Residence 1 and C Residence, instead follow the "Residential Districts Table of Dimensional Regulations," which eCode360 publishes as a separate attachment to Chapter 85 rather than as body text, so a homeowner in one of those districts should pull that attachment or contact the Planning Division for the exact controlling numbers on their lot. B(9).