New York Multiple Residence Law Section 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.

Last modified: February 3, 2019