N.Y. Real Prop. Acts. Law § 407

§ 407. Certificate as to part of property remaining after transfer.\nWhen only a part of the property described in a certificate is\ntransferred, and the description of the property is other than full or\nspecified parts of lots on a map duly filed in the office of the county\nclerk, the transfer must be accompanied by a survey from a licensed land\nsurveyor under seal of the said parcel. Said transfer and survey shall\nbe filed as a document and memorialized against the certificate.\n