New Jersey Administrative Code
Title 5 - COMMUNITY AFFAIRS
Chapter 10 - MAINTENANCE OF HOTELS AND MULTIPLE DWELLINGS
Subchapter 16 - NATURAL LIGHT, VENTILATION AND REPLACEMENT GLAZING
Section 5:10-16.1 - Natural light

(a) Every habitable room shall have at least one window or skylight or transparent or translucent panel facing the exterior of the premises directly or through an open porch into the room, equal in area to at least eight percent of the floor area of such room.

(b) Wherever walls or other portions of a structure or other opaque barriers face a window surface and are less than three feet distant from such window surface and where the projected plane of any such wall, surface or barrier shall obscure more than one half of the window surface, then such shall not be included in the calculation as contributing to meet the minimum requirements hereof.