(a) Temporary living spaces or those spaces used until the main dwelling is completed, and generally located in basements, garages, or nonstructures such as house trailers, shall not be permitted in any of the residential districts.
(b) A dwelling, however, may be temporarily occupied on or above the ground floor, provided:
(1) The exterior of the dwelling is enclosed, excavations backfilled, and the yard rough graded;
(2) The plumbing, heating, and electrical wiring is installed and safely enclosed;
(3) The walls and ceiling of the occupied rooms are covered with the basic wall material;
(4) A temporary certificate of occupancy is obtained for a period not to exceed 6 months.
(1980 Code 151.16)