R1 R2 R3 R4 R5 R6 R7 R8 R9 R10
In all districts, as indicated, either one single-family detached residence or, where permitted, one single- or two-family residence may be developed upon a zoning lot that:
(a) has less than the prescribed minimum lot area or lot width or, in lower density growth management areas in the Borough of Staten Island, does not comply with the provisions of Section 23-32 (Minimum Lot Area or Lot Width for Residences);
(b) was owned separately and individually from all other adjoining tracts of land, both on December 15, 1961, and on the date of application for a building permit or, in R2X, R3A, R3X or R4A Districts, both on the effective date of establishing such district on the zoning maps and on the date of application for a building permit or, in lower density growth management areas, both on December 8, 2005, and on the date of application for a building permit; and
(c) if developed as a two-family residence, meets the applicable density requirement of the zoning district in which such zoning lot is located.