Fence Regulations in Smithtown, NY (2026)
3 verified fence regulations for Smithtown, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
Height Limits
Smithtown caps fences, walls and berms at six feet, drops that limit to four feet in a required front yard, and restricts them to two and a half feet inside a corner-lot sight triangle. Height is measured from grade to the top of the fence, posts included, under § 322-13.
Smithtown Fence Height Limits
Some RestrictionsSmithtown Code § 322-13.A
No fence, wall, or berm shall exceed six feet in height; except that no fence, wall, or berm in a required front yard shall exceed four feet in height, except as otherwise provided in the Table of Dimensional Regulations located at the end of this chapter, and no fence, wall, or berm in a corner clearance triangle, as described in § 322-16 of this chapter, shall exceed two feet in height.
Fence Permit Requirements
Smithtown requires a Building Department permit before installing any fence, wall or berm higher than four feet, or any retaining wall higher than 30 inches. The Chief Building Inspector issues the permit, which costs a flat $200 for a fence installation under the Town's fee schedule.
Smithtown Fence Permit Requirement
Some RestrictionsSmithtown Code § 322-13.B
No retaining wall higher than 30 inches, and no fence, berm or other wall higher than four feet, shall be constructed or substantially reconstructed except in conformity with a building permit.
Retaining Walls
Smithtown requires a building permit before any retaining wall, sea wall or bulkhead is built, altered, removed or demolished, and the Town Engineer must approve detailed plans and specifications before the permit can issue.
Smithtown Retaining Wall Permit Rule
Some RestrictionsSmithtown Code § 112-26
No retaining wall, sea wall or bulkheading of any character shall be constructed, altered, removed or demolished, nor shall work therefor be commenced, until a permit therefor has been applied for and obtained as provided by § 112-10 of this article. No such permit shall be issued until and unless detailed plans and specifications for the proposed retaining wall, sea wall and bulkheading have b...
Looking for Suffolk County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Smithtown city rules.
Fence Regulations in Suffolk County →