No change shall be made in the use of any land or building or structure until a certificate of occupancy is obtained from the building inspector certifying that all of the provisions of this chapter are complied with. Whenever a building permit is issued for the erection of a new building or structure, an occupancy permit shall not be required, except where the use of the building or structure is changed from that for which the permit is issued or where the intended use is not clearly stated on the building permit. (Ord., 12-1-1971)