For all buildings and structures erected, altered or extended, and all uses of land established as specified herein, after the effective date of this Ordinance, off street loading and/or unloading facilities shall be provided as required by the regulations herein. However, where a building permit has been issued prior to the date of the adoption of this Ordinance, and provided that construction has not begun within ninety (90) days of such effective date, off street loading and/or unloading facilities in the amounts required by this Ordinance shall prevail.