Tort Law - Trespass
Trespass to Land
Permission to enter
Permission to enter a place is known as a licence to enter. (This is similar to a licence to occupy, an alternative to a lease). It can be granted implicitly, such as by opening the doors or gates to any premises, or expressly by inviting someone in, whether the access route is obstructed or not. A licence can be granted gratuitously, in which case it can be revoked at will any time. Alternatively it can be granted for payment. When granted for payment it becomes an obligation under a contract on the part of the occupant of the property (tenant, owner, hirer, etc) who granted it, to maintain that licence for the use of the licensee (the patron, visitor, customer, etc) in that the licensee must be permitted to remain on the property until they are finished with the agreed purpose of their presence there.
There are also a number of situations where permission to enter a property is a person may be permitted by law to enter a property.
Revocation and Refusal of Permission
There are expectations as to the conduct of a licensee which may be set expressly, or implied by normal expectations. Normal expectations include that the licensee will not act violently, steal, vandalise anything, intimidate others, or commit any other crime. When this happens the licensor and his/her/its agents are entitled to revoke the licence and expel the offending person immediately. An early Australian case on this was Cowell v Rosehill Racecoursein which Mr Cowell was ejected from the racecourse after behaving in a disorderly manner. He was found to have breached the implied terms of his licence to enter the racecourse.
It follows that if a person enters a property, or any part of a premises, with the intention of doing something criminal, such as shoplifting, then they are not subject to such a licence at all and are immediately trespassing. Naturally it is impossible to read minds, so this law usually is of academic interest only, except where the person’s intentions are clearly evident. They can be ejected lawfully as soon as such intentions become readily evident. A notice refusing access, or an obstruction in the access way, will suffice to deny a licence to enter.
Permission to Enter Presumed by Law
Even though a private home is not built or used with public access in mind, there is an exception which the High Court created for practical necessity. In Halliday v Nevilla police arrest was brought into question because it had followed the police chasing the plaintiff into his own property. In part of its reasoning the court ruled that unless there is an obstruction or notice denying access a person can enter the path or driveway and go to the front door to communicate with, or make a delivery to, any occupant. The court ruled that this then implies permission to step around a parked car, to retrieve lost property, or a wondering child. These examples are linked by a theme of necessity or obvious convenience. Not all are common events, and indeed some occupants may have very hostile reactions to such entries upon their turf, so the actual commonality or the actual reaction to a reason for entry is irrelevant. The court ruled that this implied licence can be revoked at any time.
This list of situations is not to exclude other reasons for entry; such lists are usually inclusive as it is expected that analogous situations will arise and be permitted. So if security guards are holding an offender under citizen’s arrest, or are seeking to make such an arrest, they should be able to pursue the offender into an open property, even though the occupant would never consent to such having been asked. This is not to liken citizen’s arrest in any way to police arrest, but it does fall within the scope of reasonable necessities. Likewise, open private property could be used as an escape route from the threat of harm.
The above rules as to improper intentions or improper conduct still apply. It follows that entry to open private property to do something well outside what is necessary and reasonable is also a trespass. For example, a person may have a licence to busk in public places, such as footpaths, or may wish to use their freedom of political expression. But using private land for a similar purpose is a trespass, even if public spaces in the intended location are too narrow. Because it is neither necessary nor to be expected from time to time, such activities are unlikely to be excused by law.
Therefore if a surveillance investigator enters a property for the purpose of conducting surveillance on the occupant, then they have trespassed, even if they are on an unfenced front garden. This includes if they are watching not the occupant but a neighbour, unless they have the occupant’s express permission.
This is one of many presumptions made by the common law for practical reasons. Like all other legal presumptions, however, it is rebuttable by a factual argument.
The case of Lincoln Hunt v Willesee stands for a limit on how far an implied licence to enter a place is deemed to enable a person to go. A news crew for the Nine Network entered an office reception area with cameras. They allegedly harassed staff filmed in the reception area, followed the receptionist down a passage, and opened interior doors. The plaintiff sued to prevent broadcasting of the footage obtained. The court found this to go well outside of what was normally to be expected. There was an implied licence for people to enter and conduct business with the occupant, but not to conduct impromptu interviews. The reason or context of entry was therefore essential.
Willesee serves as a caveat for civilian law enforcement of various kinds. It was ruled that most implied invitations are for limited purposes and any entry beyond such purpose is a trespass. Therefore if you enter a private place – a place not open for the general public – to conduct surveillance, recover a debt, or to interact under a pretext of some kind, then you will have committed a trespass.
 Cowell v Rosehill Racecourse Co Ltd  56 CLR 605.
 Halliday v Nevill (1984) 155 CLR 1.
 Lincoln Hunt Australia Pty Ltd v Willesee (1986) 4 NSWLR 457.
 For the distinction between private and public places, see the chapter on Property Law.