Provided that the impact fee shall be determined on the basis of the area of the unauthorised development and the zone in which it is situated.

Power to delegate Power to delegate.-- The State Government may, by notification in the Official Gazette, delegate to the authorised officer or any other officer, all or any of the powers conferred upon it by or under this Act, except the power to make rules under section 12, subject to such conditions and restrictions as may be specified in the notification.