No person shall occupy nor permit or let to be occupied any rental dwelling unit for the purpose of living therein which does not comply with the following requirements:
A. With the exception of tenants occupying a respective dwelling unit prior to February 12, 2007, the maximum permissible occupancy of any dwelling unit shall be determined as follows:
1. For the first occupant, one hundred fifty (150) square feet of habitable room floor space and for every additional occupant thereof, at least one hundred (100) square feet of habitable room floor space.
2. In no event shall the total number of occupants exceed two (2) times the number of habitable bedrooms, less kitchen, in the dwelling unit.
B. Occupancy of a rental dwelling unit by a single family as defined by section 11-2-2 of this Code shall be exempt from the provisions of subsection A of this section. (Prior Code § 7-11-7)