Albany, N.Y., Code of Ordinances ch. 231 § 231-16

A. Habitable space shall be provided with natural light through one or more windows, skylights, transparent or translucent panels, or any combinations thereof, that face directly on legal open spaces at least six inches above the adjoining finished grade or are above a roof. The amount of light required for each room shall be equivalent to that transmitted through clear glass equal in area to 10% of the floor area of the habitable space. B. Habitable space shall be provided with electric light. C. Every habitable room shall be provided with natural ventilation through at least one window opening that faces directly on legal open space. No such window shall be less than 12 square feet in area between stop-beads, and the top of at least one window shall not be less than six feet six inches above the floor. It shall be constructed so that at least 45% of its area may be opened. A skylight arranged to give a clear ventilating opening of eight square feet shall be deemed the equivalent of the window called for, but such skylight shall not be placed on any shaft on which a window of a toilet room opens. D. Habitable space also may be provided with mechanical ventilation, in lieu of or in addition to natural ventilation.