Clause 24

Any officer authorised in that behalf by the Minister and any person employed in that behalf under the supervision of such officer may enter upon, survey and take levels of any controlled area and may do all other acts necessary for such survey and for the purpose of marking out the boundaries of such area or any part thereof:Provided that no such officer or person shall enter into any building or enclosed garden or compound attached to any building, without the consent of the occupier, unless he shall have previously given such occupier at least three clear days’ notice in writing of his intention to do so.