Any Site Plan may be amended in accordance with the standards and procedures established herein, including payment of fees, provided that the Administrative Official may waive such procedures for those minor changes hereinafter listed. Such minor changes shall not be made unless the prior written approval for such changes is obtained from the Administrative Official. No fees shall be required for such minor changes. Minor changes include: Moving building walls within the confines of the smallest rectangle that would have enclosed each original approved building(s), relocation of building entrances or exits, shortening of building canopies, changing to a more restrictive commercial or industrial use, provided the number of off-street parking spaces meets the requirement of the Windsor Heights Zoning Ordinance. This does not apply to residential uses. Changing angle of parking or aisle provided there is no reduction in the amount of off-street parking as originally approved. Substituting plant species provided a landscape architect, engineer or architect certifies the substituted species is similar in nature and screening effect.