Islip grading permits required under Town Code Chapter 58 for disturbance over 5,000 sq ft or altering drainage patterns. Final grade must direct water away from structures and not onto adjacent property. Dry wells sized for 100-year storm.
Engineering Division reviews grading plans. Residential projects typically require dry wells (leaching pools) sized to capture runoff from roof and impervious surfaces — standard sizing 2 inches of runoff for impervious area. No direct discharge to neighbor property or public right-of-way. Fill over 1 ft in depth requires permit. NY common-law rule: upper landowner cannot increase natural flow to lower property. Town inspects rough grade and final grade.
Unpermitted grading: 500 dollar fine plus restoration. Drainage causing neighbor flooding: civil nuisance suit plus Town abatement order.
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 grading & drainage.
See how Islip's grading & drainage 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 If you notice an error or outdated information, let us know.