N.Y. Multiple Residence Law § 10: Dwellings damaged

§ 10. Dwellings damaged. If an old or other existing multiple dwelling

be damaged by fire or other cause to the extent of two-thirds or more of

its value at the time of such damage exclusive of the value of the

foundation, such dwelling shall not be repaired or rebuilt except in

conformity with the provisions of this chapter relative to new multiple

dwellings.