(2) In the period that starts as described in subsection (3) and ends as described in subsection (4), no person may do anything that would wholly or partly nullify the effect of the heritage order unless the person has the prior written consent of the heritage protection authority.
(5) A person who contravenes subsection (2) does not commit an offence against this Act unless the person knew, or could reasonably be expected to have known, of the existence of the requirement.