No dwelling unit containing less than 180 square feet of habitable room floor area shall be occupied by more than one occupant; provided, that if a dwelling unit consisting of only one habitable room has a closet with a minimum ceiling height of six feet, contained within the dwelling unit and connected thereto with a doorway or other similar opening, the actual floor area of the closet, up to and including a maximum of 20 square feet shall be included in computing the habitable room floor area of the dwelling unit.
(1964 Code, § 12A-19)