No cellar, garage, or any incompletely constructed structure in use as a dwelling on the effective date of this Zoning Code shall be used as a dwelling for more than three years following said date, unless such structure has been brought to a state of external completion in conformity with the provisions of this Zoning Code relative to dwellings in the district in which said structure is located. No such structure constructed after the effective date of this Zoning Code shall be used as a dwelling unless such structure has been completed as a dwelling and an occupancy permit issued for such structure.
(Ord. 106. Passed. 12-9-81.)