Trespass Warnings: How Security Guards Issue Them in Texas

The warning is what creates the offense

Texas Penal Code section 30.05 makes it an offense to enter or remain on property without consent after receiving notice that entry is forbidden. Before that notice, police can rarely do much about a person who is simply present on private property; a warning is what turns a return visit into criminal trespass they can act on. A security officer can be the one who gives that notice, but only where the property owner or manager has authorized it, which is why the authority is a post-orders question first and a legal question second.

Where the officer’s authority comes from

The power to exclude someone from private property belongs to the owner, not to any officer standing on it. Section 30.05 allows that notice to be given orally or in writing, by fencing, by posted signs, or, for land, by purple paint marks on posts and trees, and it allows the notice to come from the owner or from someone acting with the owner’s authority. Price Protection writes that authorization into the post orders before the first shift: what conduct triggers a warning, what form it takes on that property, and who at the property is told when one is issued. An officer without that authorization in the post orders does not improvise one on the spot.

The steps an officer follows

Identifying the person as fully as possible is the first step, a name if it can be obtained, otherwise a physical description, clothing and any vehicle information. Second, the officer states plainly and calmly that the person is not permitted on the property and must leave, in words that leave no ambiguity about what is being communicated. Third, where the property uses a written notice, the officer provides it; where it does not, the oral warning stands on its own but is documented the same way. Fourth, the officer records the event as an incident report the same day: the time, the description, a photograph where lawful and practical, and the camera reference if the property has cameras covering the area. If the property keeps a trespass list, the person’s name or description goes on it, and the next shift hears about it at handover so a returning person is recognized.

What an officer does not do

An officer does not lay hands on someone to make them leave after a warning; a person who refuses to go is a matter for police, not for physical enforcement by the officer. This mirrors the general limits on force and detention that apply to any private person: giving notice under section 30.05 is a communication, not a physical act, and the officer’s job ends at delivering it clearly and documenting it, with police called in if the person will not comply. Where an officer has any doubt about whether a specific situation is authorized under the post orders, the default is to call the supervisor rather than issue a warning that has not been cleared.

Why the written record matters more than the warning itself

Without a record	With a documented incident report
Police cannot confirm notice was given if the person returns	Police can act on a documented return as criminal trespass
The property cannot show a warning was issued if challenged	The report is the property’s evidence the warning occurred
The next shift may not recognize a returning person	Handover and the trespass list flag the person immediately
A disputed claim is the officer’s word against the person’s	Time, description and camera reference support the officer’s account

Different property types, the same procedure

The mechanics of a trespass warning do not change much by property type, but what triggers one does. An apartment community typically authorizes warnings for former residents who will not stay away, for loiterers after repeated contact, or for a person connected to a documented incident. A vacant building or a construction site more often authorizes a blanket warning against entry by anyone without business there, posted at the perimeter and reinforced individually when someone is found on site. A retail property’s policy usually ties a warning to a specific incident, such as a theft or a disturbance, rather than general presence. In every case, the post orders should say in advance what triggers a warning on that specific property, so an officer at midnight is applying a documented policy rather than making a judgment call alone.

What a property should decide before the first shift

Who may authorize a warning, whether it is given orally or in writing on that property, how long a warning is treated as standing, where the trespass list is kept, and who is notified when one is issued. This is a summary, not legal advice; the detention article covers the related but separate question of physically holding someone, and the multifamily trespassing article applies this procedure specifically to apartment communities.

Loitering is not yet trespassing

A person standing in a parking lot, sitting in a common area or walking through a property is not committing an offense simply by being there, and issuing a warning to someone who has not been told to leave and refused skips a step the statute requires. The usual sequence starts with a conversation: the officer approaches, asks what the person needs, and, if there is no legitimate reason to be there, asks them to leave. Most loitering situations end at this stage without ever becoming a trespass warning. A warning becomes appropriate only once a person has been asked to leave and either refuses or is expected to return, which is the point at which formal notice under section 30.05 starts to matter rather than a simple request.

How this connects to the rest of a post’s documentation

A trespass warning does not stand alone in a property’s records; it connects to the daily activity report, the incident report and, where the property keeps one, the trespass list, so that a pattern is visible over time rather than buried in a single shift’s notes. A property manager reviewing weeks of daily reports can see whether the same names or descriptions keep appearing, which is often the signal that a warning needs to be escalated to a formal notice, that a police report should accompany it, or that the property’s own access controls, lighting or fencing need attention rather than relying on an officer catching every return in person. The warning is a legal tool; the reporting around it is what turns a single encounter into a property’s institutional memory of who has been told not to come back.