2006 New York Code - Attached Garages.

 
    §  27-475  Attached  garages.  Private garages attached to, or located
  above or below, a dwelling shall have  walls,  partitions,  floors,  and
  ceilings   separating   the   garage   from   the   dwelling,  having  a
  fire-resistance  rating  of  at  least  one  hour,  except   that   such
  fire-resistive construction shall not be required between a dwelling and
  a  carport when such carport is open on at least two sides. Any openings
  to the dwelling in required walls or partitions shall be protected  with
  one and three-quarter inch solid core wood doors or equivalent.