Oyster Bay, NY Swimming Pools & Spas: Pool Permits (2026)

1 sets the trigger point for when a swimming pool needs Town sign-off before a shovel goes in the ground. Any in-ground pool needs a permit regardless of size. Aboveground pools only need one once capacity exceeds 5,000 gallons, so a small aboveground kiddie or splash pool under that threshold falls outside the permit requirement. The permit comes from the Department of Planning and Development, not the Building Department, reflecting that pool placement is treated as a zoning and site-plan matter as much as a construction one.

The application package has two required components: plans showing the width, length and depth of the pool, and a property survey that pinpoints exactly where the pool will sit along with the related deck area, fencing, landscaping, lighting and mechanical equipment. The Department can also demand complete plans, data and specifications for the pool structure itself if it needs more detail to evaluate the proposal. 2 layers on siting rules: no part of the pool can sit closer than five feet to any lot line or the district's minimum accessory-building setback, whichever distance is greater, and corner or double-frontage lots must meet the front-yard setback along every street frontage the lot touches.

The Department can push that setback out further for pools serving multifamily or nonresidential uses. 3 requires spill-off and drainage from the pool to be controlled so it never reaches a neighboring property or roadway, with pool water directed into a system designed to control erosion and dissipate pool chemicals.