DWELLING UNIT OCCUPANCY REQUIREMENTS.

(a) Except as provided by Subsection (b), a municipality may not adopt or enforce a zoning ordinance, rule, or other regulation that limits the number of people who may occupy a dwelling unit based on:

(1) age;

(2) familial status;

(3) occupation;

(4) relationship status; or

(5) whether the occupants are related to each other by a certain degree of affinity or consanguinity.

(b) A municipality may impose a limit on the number of occupants of a dwelling unit that is not more restrictive than:

(1) one occupant per sleeping room with a minimum floor area of 70 square feet; and

(2) one additional occupant for each additional 50 square feet of floor area in the same sleeping room.