New York Laws
Title 2 - Realty Subdivisions: Water Supply
1115-A - Remedy for Purchaser of One Parcel of Unapproved Realty Subdivision.

(a) acquired by the owner-applicant prior to January first, nineteen
hundred seventy-one; or
(b) acquired by the owner-applicant through devise or intestate
succession; or
(c) not at the time of acquisition of title by the owner-applicant, a
part of a subdivision, as such term is defined in section eleven hundred
fifteen of this title.
In addition, this section shall apply to a single residential lot
which the appropriate department deems proper for approval because of
hardship or other special circumstances established to its satisfaction
by the owner-applicant.