Fence Regulations in Islip, NY (2026)
8 verified fence regulations for Islip, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
Height Limits
In the Town of Islip a fence may be no higher than 4 feet within 15 feet of a street property line, no higher than 6 feet for a solid privacy fence in side and rear yards, and up to 8 feet only if it is an open chain-link type that does not block more than 15% of light or visibility.
4 ft front, 6 ft solid/8 ft open side & rear
Some RestrictionsTown of Islip, Division of Building, Zoning Frequently Asked Questions, 'Are There Restrictions on the Height of a Fence?' (citing Sec. 68-404, 68-405, 68-406)
ARE THERE RESTRICTIONS ON THE HEIGHT OF A FENCE? Yes, there are height restrictions for fences; please refer to Sec. 68-404, Sec. 68-405 and Sec. 68-406 of The Code. Side and Rear Yard: Fences may be no higher than 6 feet in the case of privacy-type fences. Fences may be no higher than 8 feet in the case of an open chain-link-type fence, or one which does not restrict light or visibility throug...
Permit Requirements
The Town of Islip does not require a permit to install a fence as long as it complies with zoning and traffic-safety rules, but a permit is required before constructing any wall greater than 18 inches in height above average undisturbed grade.
No fence permit; permit needed for walls > 18 in
Few RestrictionsTown of Islip, Division of Building, Zoning Frequently Asked Questions, 'Do I Need a Permit to Install a Fence?'
DO I NEED A PERMIT TO INSTALL A FENCE? A permit is not required to install a fence, provided that the fence complies with Town of Islip regulations, including but not limited to zoning and traffic safety.
Neighbor Fence Rules
Islip requires fences over 4 feet to be set back 15 feet from a street and 10 feet from a second front yard line, keeps any obstruction over 3 feet out of required sight triangles, and prohibits gates that open into a street.
Setbacks, sight triangles, no gate into street
Some RestrictionsTown of Islip, Division of Building, Zoning Frequently Asked Questions, 'Are There Restrictions on the Height of a Fence?' (Front Yard); General Zoning Standards Chart, Note 10
Front Yard: Fences may be no higher than 4 feet when placed on or less than 15 feet from the property line (except when located on a corner or adjacent to a driveway, in which case maximum height is 3 feet). Fences may be no higher than 8 feet when set back 15 feet or more from the property line. (See Sec. 68-406(B)(1) for exceptions for corner properties equal to or less than 11,250 sq. ft.) [...
Retaining Walls
Retaining and other walls greater than 18 inches above average undisturbed grade must obtain a permit before construction and be set back from any property line by at least 4 feet or a distance equal to the wall's height, whichever is greater.
Walls > 18 in need permit and 4 ft setback
Some RestrictionsTown of Islip Code Sec. 68-406F (Fences and walls), Article XXX
All walls greater than 18 inches in height from average, undisturbed grade shall be set back from any property line a minimum of four feet or a distance equal to the height of the wall above average, undisturbed grade, whichever is greater. Walls that are greater than 18 inches in height, at any point above average, undisturbed grade, shall obtain a permit prior to construction.
Pool Barriers
Swimming pools in Islip must be surrounded by barriers that comply with the New York State Residential Code and the Town of Islip Town Code; owners must consult a Building Plans Examiner and the Zoning Department.
Pool barriers per NYS Code and Town Code
Heavy RestrictionsTown of Islip, Division of Building, Zoning Frequently Asked Questions, 'Does a Pool Have to Be Surrounded by a Fence?'
DOES A POOL HAVE TO BE SURROUNDED BY A FENCE? Pools require barriers subject to the NYS Residential Code and Town of Islip Town Code. Please consult with a Building Plans Examiner and the Zoning Department.
Fence Requirements
Islip Town Code requires a sight triangle of 25 feet measured from the intersection of street right-of-way lines on corner lots. Fences, hedges, and obstructions over 30 inches tall are prohibited in this triangle to maintain driver visibility.
Fences: Corner Visibility
Heavy RestrictionsMaterial Restrictions
Islip permits wood, vinyl, chain link, aluminum, and masonry fencing. Barbed wire and electrified fencing prohibited in residential zones. Historic districts require board approval for material choice. Waterfront fencing must use materials resistant to salt spray and hurricane winds.
Fences: Materials
Some RestrictionsApproved Materials
Islip prohibits electric fences and barbed, razor or concertina wire, requires any fence over 6 feet to be an open chain-link type, bars chain-link (cyclone) fences in front yards of Business and General Service Districts, and requires wrought-iron fencing along mini-storage street frontages.
No barbed/razor/electric; chain-link limits
Heavy RestrictionsTown of Islip Code Sec. 68-406E (Fences and walls), Article XXX
The use of fences which deliver an electric shock, charge or current to any animal or human being, when touched, is prohibited. The installation or use of barbed wire, razor wire, concertina wire or any other similar wire or device designed to injure persons coming in contact with the same is also prohibited, unless required by federal, state, or local law or regulation.
Looking for Suffolk County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Islip city rules.
Fence Regulations in Suffolk County →