No person shall occupy as owner-occupant or let to another for occupancy any dwelling or dwelling unit for the purpose of living therein, which does not comply with the following requirements:
(a) Every habitable room shall have at least one window or skylight facing directly to the outdoors. The minimum total window area, measured between stops, for every habitable room shall be ten percent (10%) of the floor area of such room. Whenever walls or other portions of structures face a window of any such room and such light-obstructive structures are located less than three feet from such window and extend to a level above that of the ceiling of the room, such window shall not be deemed to face directly to the outdoors and shall not be included as contributing to the required minimum total window area. Whenever the only window in a room is a skylight window in the top of such room, the total window area of such skylight shall equal at least fifteen percent (15%) of the floor area of such room.
(b) Every habitable room shall have at least one window or skylight which can easily be opened or such other device as will adequately ventilate the room. The total of openable window area in every habitable room shall be equal to at least forty-five percent (45%) of the minimum window area size or minimum skylight window size, as required in subsection (a) hereof; except where there is supplied some other device affording adequate ventilation, approved by the Housing Officer.
(c) Every bathroom and water closet compartment shall comply with the light and ventilation requirements for habitable rooms contained in subsections (a) and (b) hereof; except, that no window or skylight shall be required in adequately ventilated bathrooms and water closet compartments equipped with a ventilation system which is kept in continuous operation and approved by the Housing Officer.
(d) Where there is electric service available from power lines which are no more than three hundred feet away from a dwelling, every habitable room of such dwelling shall contain at least two separate floor or wall electric convenience outlets or one such convenience outlet and one supplied ceiling-type electric light fixture; and every water closet compartment, bathroom, laundry room, furnace room and public hall shall contain at least one supplied ceiling or wall electric light fixture. Every such outlet and fixture shall be properly installed, maintained in good and safe working condition and safely connected to the source of electric power.
(e) Every dwelling shall have heating facilities which are properly installed, maintained in safe and good working condition and capable of safely and adequately heating all habitable rooms, bathrooms and water closet compartments in every dwelling unit located therein to a temperature of at least seventy degrees Fahrenheit, at a distance three feet above floor level, under ordinary minimum winter conditions.
(f) Every public hall and stairway in every multiple dwelling containing five or more dwelling units shall be adequately lighted at all times. Every public hall and stairway in structures devoted solely to dwelling occupancy and containing no more than four dwelling units may be supplied with conveniently located light switches, controlling an adequate lighting system which may be turned on when needed, instead of full-time lighting.
(g) During that portion of each year when the Housing Officer deems it necessary for protection against mosquitoes, flies and other insects, every door opening directly from a dwelling unit to outdoor space shall have supplied screens and a self-closing device; and every window or other device with openings to outdoor space, used or intended to be used for ventilation, shall likewise be supplied with screens; provided, that such screens shall not be required during such period in rooms deemed by the Housing Officer to be located high enough in the upper stories of buildings as to be free from such insects, and in rooms located in areas of this City which are deemed by the Housing Officer to have so few such insects as to render screens unnecessary.
(h) Every basement or cellar window used or intended to be used for ventilation and every other opening to a basement which might provide an entry for rodents shall be supplied with a screen or such other device as will effectively prevent the entrance of such rodents.
(1978 Code Sec. 5-46)