Police Powers and Responsibilities Act 2000

A reasonable time for a police officer to enter a place for exercising a power in relation to a relevant law includes—

when the place is open to or used by the public; and

when the police officer may reasonably expect that someone will be present at the place; and

when someone is present at the place.

However, if no-one is at a building on a place a police officer enters under subsection (1)(b), the time stops being a reasonable time for the entry.