N.Y. Multiple Dwelling Law § 151: Spaces under stairs

§ 151. Spaces under stairs. 1. It shall be unlawful to have a closet

of any kind under any public stair.

2. The space beneath every stair from the foot of the stair to a point

where the soffit is four feet or more above the floor shall be entirely

enclosed with unpierced fire-retarded partitions. Such enclosure beneath

a flight of public stairs leading from the entrance story to the story

next above shall be fireproof.

3. Any unenclosed portion of the space beneath a flight of public

stairs leading from the entrance story to the story next above shall be

left entirely open and kept clear and free from encumbrance.