s 5 Power of entry and survey
(1) The State Director may by written authority in Form B generally or specifically authorize any officer or person, together with servants and workmen, to enter upon any land in any locality specified in a notification published under section 4, and to do such work as may be specified in such Form. (2) A person authorized under subsection (1) shall, on demand by the occupier of any land upon which he enters, produce to such occupier his letter of authority in Form B together with a copy of the relevant notification in Form A. (3) A person authorized under subsection (1) shall not enter into any building or upon any enclosed court or garden attached to a dwelling-house unless— (a) he has first obtained the consent of the occupier thereof; or (b) failing such consent, he has given the occupier three days’ notice in writing of his intention to do so.