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Accessory Structures in Clarkstown, NY (2026)

1 verified accessory structures rules for Clarkstown, New York, sourced directly from the municipal code and official government pages.

Verified from official government sources

Shed & Carport Rules

Clarkstown exempts a detached tool or storage shed up to 144 square feet from needing a building permit at all. Any accessory building on a single- or two-family lot, permit-exempt or not, still must meet zoning limits: no more than 12 feet tall, set back two-thirds its own height from every lot line, and capped with other accessory buildings at 15% of the lot area.

Clarkstown Shed Size, Setback and Permit Rules

Some Restrictions

Clarkstown Code § 290-21B(6)

Accessory buildings in required side or rear yards. A building accessory to a single-family or two-family dwelling in any district except R-80 and R-40 may be located in any required side or rear yard, provided that it does not exceed 12 feet in height, it is set back from any lot line two-thirds (2/3) the height of such building, and the floor area of all such buildings on the lot does not exc...

Looking for Rockland County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Clarkstown city rules.

Accessory Structures in Rockland County