Garage conversion rules in Islip, NY — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a garage to living space in Islip requires a building permit, zoning review, and an updated Certificate of Occupancy. Replacement off-street parking equal to what the garage provided must be documented on the site plan.
FCNYS and NY Residential Code require fire separation, egress windows, ceiling height over 7 ft, insulation to ECCCNYS standards, and upgraded smoke/CO alarms. Conversions that create a second dwelling unit must also satisfy the accessory apartment program. Many illegal conversions are uncovered at sale when title searches reveal no updated C of O. Historic Bay Shore and Islip hamlet cottages often face additional architectural review.
Illegal conversion: $1,000-$5,000, vacate order, and restoration to garage use. Sale blocked until C of O amended.
Islip, NY
Islip Town Code Chapter 40 establishes quiet hours from 10 PM to 7 AM weekdays and 10 PM to 8 AM weekends. Unreasonable noise audible at 50 feet from a resid...
Islip, NY
Islip Town Code §68-416 prohibits parking commercial vehicles over 10,000 lbs GVW or with exterior signage on residential lots or streets overnight. One serv...
Islip, NY
Islip Town Code §52-6 defines abandoned vehicle as unregistered, inoperable, or parked over 72 hours on public way. Town may tow after 48-hour notice tag. NY...
Islip, NY
All Islip dwellings require working smoke alarms on every story and outside each sleeping area per 19 NYCRR 1225 (FCNYS 915). Homes built or sold after April...
Islip, NY
Property owners in Islip must maintain defensible space around structures, particularly in Pine Barrens-adjacent areas like Central Islip, Holtsville, and Ro...
Islip, NY
Islip permits recreational fire pits under NY Uniform Fire Prevention Code (19 NYCRR 1225) enforced by the Islip Fire Marshal. Pits must be 25 ft from struct...
Side-by-side rule comparisons with other cities in Suffolk County.
See how other cities in Suffolk County handle garage conversions.
See how Islip's garage conversions rules stack up against other locations.
Quick Compare
Help us keep this page accurate. If you notice an error or outdated information, let us know.