Section 49(1)(d) in The Gujarat Town Planning and Urban Development Act, 1976
(d)if any person contravenes the provisions of clause (a) or of any condition imposed under clause (b), the appropriate authority may direct such person by notice in writing to stop any development in progress, and after making an inquiry in the prescribed manner remove, pull down, or alter any building or other development or restore the land or building in respect of which such contravention is made to its original condition;