No land shall be occupied or used in whole or in part for any purpose whatsoever unless and until a Zoning Permit therefor shall have been issued by the Construction Official. A Zoning Permit shall be required for the use of any premises which does not have upon it a building. Whenever there shall be a change contemplated in the use of any premises which does not have a building upon it, a new Zoning Permit therefor shall be required.