This procedure is intended to provide relief from the terms of the Zoning Property Development Regulations and Sign Ordinance when, because of special circumstances applicable to the property, the strict application of the Zoning Property Development Regulations and Sign Ordinance deprives such property of privileges enjoyed by other property in the vicinity and under identical zoning classification, and to ensure that any adjustment thereby authorized shall not constitute a grant of special privileges inconsistent with the limitations upon other properties in the vicinity and the district in which such property is situated.