Scope of Provisions. Off-street parking, unloading and service requirements of this section shall apply and govern in all present and future zoning districts within the Township. Except as provided in this section, no application for a building permit shall be approved unless there is included with the plan for such building, improvement or use a plot plan showing the required space reserved for off-street parking, unloading and service purposes. An occupancy permit shall not be given unless the required off-street parking, unloading and service facilities have been provided in accordance with those shown on the approved plan.