When, because of special circumstances applicable to the subject property, including size, shape, topography, location or circumstances, the strict application of this chapter is found to deprive the subject property of privileges enjoyed by other property in the vicinity and under identical zone classification, and when any variance granted does not constitute a grant of special privileges inconsistent with the limitations upon other properties in the vicinity and the zone in which the subject property is situated, the Commission shall have authority, as an administrative act, to grant such variance. The Commission may impose such conditions, which shall be set forth in any such variance, as it may determine to be necessary in order to safeguard and protect the public health, safety and general welfare, and to insure the development thus permitted being completed in accordance with such plans as the Commission may approve.