Section 50. Application of article four

1. As used in this article, the
  term "transient  dwellings"  shall  mean  and  include  hotels,  lodging
  houses,  boarding  and  nursery  schools,  sorority  houses,  fraternity
  houses, college  and  school  dormitories,  convalescent,  old  age  and
  nursing  homes,  and  dwellings used for single room occupancy. The term
  "transient occupancy" shall mean the occupancy of a  room  for  sleeping
  purposes  by  the  same person or persons for a period of ninety days or
  less.
    2. Except as provided in  sections  sixty-three  and  sixty-four  with
  respect  to  one  and  two  story transient dwellings only, this article
  shall apply to all transient dwellings three or more stories  in  height
  and  in  existence  on July first, nineteen hundred fifty-two, provided,
  however, that the provisions of article two  and  sections  fifty-three,
  fifty-six  and  sixty-one  of  this article shall apply to new transient
  dwellings.
    3. As to such existing transient dwellings, the provisions of sections
  fifty-six, sixty-one and sixty-two of this  article  shall  be  complied
  with on or before July first, nineteen hundred fifty-four, and all other
  sections of this article shall be complied with on or before July first,
  nineteen hundred fifty-five.