Any variance granted shall be subject to such conditions as will assure that the adjustment thereby authorized shall not constitute a grant of special privileges inconsistent with the limitations upon other properties in the vicinity and zone in which such property is situated. The commission shall set forth such conditions as it deems necessary and reasonable to protect the best interests of the surrounding property or neighborhood, the general plan, or the intent thereof. Such conditions may include the dedication and development of streets adjoining the property, and other improvements. All such conditions shall be binding upon the applicants, their successors and assigns. (Ord. 1000 § 50.30(g), 1955)