Islip, NY Fence Regulations: Neighbor Fence Rules (2026)
Key Facts
- Fence over 4 ft - front setback
- 15 ft
- Fence over 4 ft - second front yard setback
- 10 ft
- Sight triangle / within 8 ft of pavement
- Max 3 ft high
- Gates
- May not open into a street (Sec. 68-406D)
Summary
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.
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.) [General Zoning Standards note:] In all zones fences greater than 4 feet high require a 15 foot front yard setback and a 10 foot second front yard setback.
Full Breakdown
Setback and neighbor-facing rules are in Islip Town Code Sections 68-405 and 68-406. Section 68-406B limits any fence or wall to 4 feet when set back less than 15 feet from a street property line, and for corner lots to 4 feet when set back less than 10 feet from the second front yard property line; a General Zoning Standards note confirms that in all zones a fence over 4 feet high requires a 15-foot front yard setback and a 10-foot second front yard setback.
Section 68-406C provides that no fence, wall or obstruction may be higher than 3 feet above the adjacent pavement edge when located within any required sight triangle or when set back less than 8 feet from any street pavement edge. Section 68-406D states that no gate shall open into any street. Section 68-405 establishes sight triangles at every street intersection and at driveways (16-foot driveway leg and 20-foot street leg for one- and two-family driveways) within which visibility must be preserved. For single-family and two-family dwellings on corner lots of 11,250 square feet or less, Section 68-406B(1) allows a 6-foot fence up to the second front yard line provided no fence between the front yard line and the front of the dwelling exceeds 4 feet.
Violations & Fines
Fences placed inside a required setback or sight triangle, or gates opening into a street, are enforced by the Town of Islip Division of Building and Department of Public Safety. The Town may require relocation or removal; relief from setbacks must be sought from the Zoning Board of Appeals, and violations carry the penalties in Chapter 68.
Frequently Asked Questions
How far back must a tall fence sit from the street?
Can my fence block the view at a corner?
Can my gate open out toward the road?
Sources & Official References
Other rules in Islip
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