Environmental Planning and Assessment Act 1979 No 203
118A Power of entry
(1) For the purpose of enabling a council to exercise the council’s functions, the council may authorise a person, in writing, to enter any premises.
(2), (2A) (Repealed)
(2B) The principal certifying authority for any development may enter the land on which the development is carried out, including any building or work being erected on the land, for the purpose of exercising his or her functions under this Act and the regulations as the principal certifying authority with respect to the development.
(2C) Subject to the regulations, this Division (other than section 118BA) applies to a principal certifying authority referred to in subsection (2B) as if his or her functions as a principal certifying authority were the functions of a council and as if he or she had been authorised by a council to enter premises for the purpose of exercising those functions.
(3) Entry may only be made at any reasonable hour in the daytime or at any hour during which business is in progress or is usually carried on at the premises.