(a) The maximum number of occupants of a mobile home shall be limited to the number determined on the basis of the square feet of floor area of habitable space, exclusive of habitable space used for cooking purposes, in accordance with the following:
150 square feet for one or two occupants;
250 square feet for three occupants, and
80 square feet additional for each occupant thereafter.
(b) Habitable space shall have a minimum ceiling height of seven feet over fifty percent of the floor area; and the floor area where the ceiling height is less than five feet shall not be considered in computing gross floor area.
(c) A mobile home shall have a safe and unobstructed primary exit and an emergency exit located remote from the primary exit.