New York Consolidated Laws, Real Property Law - RPP § 407. Certificate as to part of property remaining after transfer

When only a part of the property described in a certificate is transferred, and the description of the property is other than full or specified parts of lots on a map duly filed in the office of the county clerk, the transfer must be accompanied by a survey from a licensed land surveyor under seal of the said parcel.  Said transfer and survey shall be filed as a document and memorialized against the certificate.