No person shall occupy as owner-occupant or shall let to another for
occupancy any dwelling, dwelling unit or rooming unit which does not comply
with the following.
Every habitable room or bathroom shall have at least one window or skylight
facing directly to the outdoors. The minimum aggregate area available for
unobstructed light shall be not less than 10% of the floor area of such room.
Every stair, hall, cellar, basement, laundry, furnace room and similar
nonhabitable work space located in a structure used for human habitation shall
have either adequate natural or artificial light capable of providing at all
times not less than 50 footcandles of light at floor level. Every public hall
and stairway in a multiple dwelling shall also be adequately lighted at all
times to provide not less than 50 footcandles of light at floor level.
Every habitable room or bathroom shall be ventilated either by openable
areas directly accessible to the outdoors and equal to at least 45% of the
required window area or by equivalent mechanical ventilation.
The required bathroom in each dwelling unit shall be ventilated either
by an openable area directly accessible to the outdoors and not less than
1 1/2 square feet or by equivalent mechanical ventilation.
Every dwelling unit shall contain at least 600 square feet of gross
habitable floor area, not including stairs and corridors.
In every dwelling unit of two or more rooms, every room occupied for
sleeping purposes shall contain at least 120 square feet of floor space, and
every room occupied for sleeping purposes by more than one occupant shall
contain at least 60 square feet of floor space for each occupant thereof.
For the purposes of this section, a person under one year of age shall not
be counted as an occupant.
No dwelling unit containing two or more sleeping rooms shall have room
arrangements such that access to a bathroom or water closet compartment, intended
for use by occupants of more than one sleeping room, can be had only by going
through another sleeping room; nor shall room arrangements be such that access
to a sleeping room can be had only by going through another sleeping room
or a bathroom or water closet.
At least 1/3 of the floor area of every habitable room shall have a
ceiling height of at least seven feet four inches. The floor area of that
part of any room where the ceiling height is less than five feet shall not
be considered as part of the floor area of the room for the purpose of determining
the maximum permissible occupancy thereof.
No basement space shall be used as a habitable room or dwelling unit
unless:
