In the case of a proposed amendment which involves the reclassification or transfer of 1/2 acre or more from any use to a less restricted use, the Village Board of Trustees shall require the petitioner to submit a development or site plan showing the extent, location and character of proposed structures and uses. The Village Board of Trustees may require that such plan be modified to ensure its compatibility with adjacent areas and may qualify its approval of such amendment by attaching a special endorsement thereto. Any future additions to the development or site plan area must be resubmitted to the Village Board of Trustees to determine that the addition is substantially in agreement with the intent of the original amendment. Nonconformity in architectural design with the original development may be considered a reasonable basis for refusal to issue a building permit for such an addition.

No building permit shall be issued for construction within the area described by said provisional amendment, except in accordance with the approved development or site plan and with all conditions and limitations placed thereon by the Village Board of Trustees or in accordance with the zoning regulations applicable prior to said reclassification action. Unless application for a building permit for such property rezoned or granted special permit is made within a period of one year after the Village Board of Trustees' approval, said approval shall be void and the zoning classification shall be as it was when the petition for amendment was filed.