2006 New York Code - Scope.

 
    §  27-354  Scope.  The provisions of this subchapter shall control the
  design, construction, protection, location, arrangement and  maintenance
  of  required  exit  facilities  to provide safe means of egress from all
  buildings hereafter erected, altered or  changed  in  occupancy,  except
  that  exit requirements for special uses and occupancies, as provided in
  subchapters seven and eight of this chapter, shall take precedence  over
  the  provisions  of this subchapter and except further that buildings in
  existence on December sixth, nineteen hundred sixty-eight  shall  comply
  with  the  applicable  requirements  of  section 27-356 of this article,
  section 27-371 of article five of this subchapter and articles eight and
  nine of this subchapter.