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

4 defines LOT COVERAGE town-wide as the percentage of a lot covered by the combined area of all buildings, structures, paved areas and other impervious surfaces. The Town's numeric coverage caps by zoning district for ordinary lots sit in the Schedule of Dimensional Regulations, Attachment 18 to Chapter 246, which is not reproduced in the main code text. 7 to protect groundwater recharge into the sole-source aquifers that supply drinking water to Oyster Bay and Nassau County. 2 sets maximum permitted impervious lot coverage for a one-family residential lot of 10,000 square feet or more that was not legally in one- or two-family use as of the amendment's effective date: 4,000 square feet plus 20% of area over 10,000 square feet for lots between 10,000 and 19,999 square feet; 6,000 square feet plus 12% of the excess for 20,000 to 43,559 square feet; 8,830 square feet plus 10% of the excess for one to two acres; 13,180 square feet plus 8% of the excess for two to five acres; and 23,600 square feet plus 6% of the excess above five acres.

Multifamily or nonresidence uses on a one-acre-or-larger APO lot are capped at 22,000 square feet plus 45% of the area over one acre, or flatly at 22,000 square feet on lots under an acre. The section carves out an exception for redevelopment of an already-developed lot that already exceeds these caps: the numeric limit does not apply, but coverage must still be minimized to the maximum extent practicable. 4 caps any accessory structure at one-third of the maximum permitted building coverage of the district it sits in, and at no more than 40% of the principal building's own coverage.