Clarkstown, NY Building Setbacks & Zoning: Lot Coverage Limits (2026)

Clarkstown's zoning code (Chapter 290) sets lot coverage limits district by district in the Bulk Table, but § 290-20F spells out the numbers directly for the town's three multifamily zones. 00% in those same districts. Section 290-20F(1) sets a 40,000-square-foot minimum overall lot area for any MF-1, MF-2 or MF-3 development, and F(3) requires 150 feet of minimum lot width. The Town's definition of lot coverage, at § 290-3, reaches every impervious surface on the lot: buildings, structures, parking areas, driveways and roads that reduce stormwater infiltration, but carves out fences without continuous footings, decks with 1/8-inch spaced decking over pervious ground, vegetated green roofs, any area the Department of Engineering and Facilities Management credits with stormwater detention or infiltration, and porous pavement meeting the NYS Stormwater Management Design Manual.

Any stormwater management measure built into the lot design requires a maintenance agreement, including posted security, under Chapter 249A. Site plans for multifamily development go through Planning Board review under § 290-16 before a building permit issues, and the Building Inspector checks lot coverage against the recorded site plan. 1), each carry their own separate 50% coverage ceilings, so an owner must confirm the applicable zoning district before applying any single percentage.