## Introduction

Criminal trespass is a common charge across the United States. At its core, it covers two situations: entering property without permission, or staying after you’ve been told to leave. Most states require proof that the person knew entry was off-limits or received a clear warning to go and refused. This guide explains the elements, how notice works, typical penalties, common defenses, and real-world examples so both property owners and visitors know where the lines are.

Laws vary by state, so always check local statutes or speak with a licensed attorney if you need legal advice.

## What You’ll Learn

- The plain-language definition of criminal trespass and how it differs from civil trespass
- The elements prosecutors must prove: entry or remaining, lack of permission, and notice
- What counts as notice: signs, fences, verbal or written warnings, and posted hours
- How trespass applies in homes, businesses open to the public, schools, and posted land
- Degrees and penalties often used in U.S. states, including aggravating factors
- Common defenses and exceptions, such as consent and necessity
- Case-style examples that show how courts treat unauthorized entry and refusal to leave
- Practical steps for property owners and managers to set and enforce boundaries
- Practical tips for visitors to avoid trespass charges

## Core Concepts

### Legal Definition and Elements

While wording varies by state, criminal trespass generally means a person:

- Enters or remains on land, a building, or other premises
- Without license or privilege (no permission or permission revoked)
- With knowledge that entry is forbidden, or continues to remain after being told to leave

Typical elements prosecutors must show:

1. Entry or remaining: The person crossed into or stayed on property.
2. Lack of permission: No consent from the owner, occupant, or authorized agent.
3. Notice: The person knew entry was forbidden or received a clear request to leave.
4. Mental state: Most states require that the person acted knowingly; some use terms like willfully or intentionally.
5. Location: The charge level may depend on the type of property (dwelling vs. open land) and whether the property was posted or fenced.

Criminal trespass is different from civil trespass (a lawsuit for damages). Criminal charges may bring fines, probation, or jail, even without any property damage.

### Notice: Signs, Verbal Warnings, and Implied Notice

Notice can be shown in several ways:

- Posted signs: “No Trespassing,” “Private Property,” “Employees Only,” “No Entry,” or after-hours signs such as “Closed.” Many states set rules for sign size, placement, or regular spacing.
- Fences, locks, or barriers: Locked doors, gates, and clearly fenced areas are strong signals entry is off-limits.
- Purple paint laws: In many states, purple markings on trees or posts serve as a legal no-trespassing notice on rural land.
- Verbal or written warnings: Owners, managers, security, or police can tell someone to leave. Written trespass warnings or “ban letters” are common for retail stores or campuses.
- Prior notice: If a person was banned before, returning after that ban can satisfy the notice requirement.
- Implied limits: Businesses open to the public give limited permission—typically during business hours and only in public areas. Back rooms, “employees only” areas, and construction zones remain off-limits.

Who can give notice? Usually the property owner, a lawful occupant, an on-site manager or agent, security personnel acting for the owner, or a police officer.

### Intent and Remaining Unlawfully

Entering is only half the story. Trespass also covers staying after permission ends:

- Staying after hours: Remaining inside a store after closing, or in a park after posted hours, can lead to a charge.
- Refusing to leave: If a person is told to go and refuses, that refusal completes the offense in many states.
- Mistake vs. knowledge: If signs were hidden, confusing, or missing, the defense may argue there was no knowledge. But obvious signs, locked doors, fences, or direct warnings usually defeat that claim.
- Public vs. private spaces: A privately owned shop is open to customers, but only for lawful purposes and during open hours. If staff asks someone to leave, staying can become trespass.

### Degrees, Locations, and Penalties

States organize trespass offenses in different ways, but common patterns include:

- Simple criminal trespass: Often a misdemeanor for entering or remaining on property without permission after notice.
- Trespass in a dwelling: Typically treated more seriously. Entering or remaining in someone’s home without permission is often a higher misdemeanor, and in some states can rise to a felony under certain facts.
- Aggravating factors:
  - Carrying a weapon
  - Trespassing at schools, domestic violence shelters, or places with protective orders
  - Critical infrastructure, railroads, or utilities
  - Prior bans or repeat offenses
  - Damage to property (which can bring separate charges)
- Penalties can include:
  - Fines
  - Probation
  - Community service
  - Short jail terms for misdemeanors (often up to 30, 90, or 365 days, depending on the state)
  - Restitution for any damage
  - Stay-away orders or future bans

Note: Burglary is different. Burglary usually requires entering a building with the intent to commit a crime inside (like theft). Trespass does not require that added intent.

### Common Defenses and Exceptions

- Consent: Permission from the owner or authorized agent defeats trespass. If consent was revoked, staying after that point can be a problem.
- Necessity: Entering to avoid immediate harm (for example, seeking shelter from severe weather or rendering urgent aid) may be a defense in some states.
- Lack of notice: Missing or unclear signs, open gates, or no verbal warning in a state that requires it can defeat the charge.
- Mistake of fact: A person reasonably believed they had permission (for example, a mix-up about event access or a delivery).
- Public right-of-way or easements: Sidewalks, utility easements, or other limited-use areas sometimes allow passage or entry for specific purposes.
- Lawful duties: Firefighters, police, process servers in certain situations, and utility workers may have legal privileges to enter.

Local rules matter. For example, public parks and government buildings have specific hours and policies, while private malls and stores can set and enforce their own rules.

## Key Examples or Case Studies

People v. Johnson (Unauthorized Entry)

- Facts: The defendant entered a commercial building after hours without permission. Signs said entry was forbidden.
- Result: Criminal trespass charge.
- Lesson: Clear signs and after-hours entry can satisfy notice and support a charge.

State v. Smith (Failure to Leave)

- Facts: The defendant stayed on private property after being told to leave by the owner.
- Result: Criminal trespass conviction.
- Lesson: Once a property owner or authorized person says “leave,” refusing to go can complete the offense.

Doe v. State (Trespass on Posted Property)

- Facts: The defendant went into a fenced area with visible “No Trespassing” signs.
- Result: Criminal trespass charge.
- Lesson: Fences and posted signs generally provide strong notice that entry is not allowed.

Together, these examples cover the most common paths to a trespass case: unauthorized entry, refusal to leave after a warning, and entry onto clearly posted land.

## Practical Applications

For property owners and managers

- Post clear signs: Use “No Trespassing,” “Private Property,” “Employees Only,” and posted hours. Follow any state rules for size and placement.
- Use barriers: Fences, gates, locks, and badges help show which areas are off-limits.
- Consider purple paint: If your state recognizes purple paint markings, use them on rural or wooded boundaries.
- Mark closed areas inside: Put signs on stockrooms, kitchens, back offices, and construction zones.
- Give clear verbal warnings: Say plainly that the person must leave and where to exit. If safe, have a second employee present.
- Document incidents: Save camera footage, take photos of signs, and keep an incident log with dates, times, and names.
- Issue written trespass warnings: For repeat issues, a written ban letter clarifies future consequences. Keep copies.
- Call police when needed: If someone refuses to leave or poses a safety risk, contact law enforcement. Do not use force unless the law allows it for self-defense.
- Train staff: Review policies on when to ask someone to leave and how to document the interaction.

For visitors, customers, and guests

- Check signs and hours: Look for “No Trespassing,” “Closed,” “Employees Only,” and fences or locks.
- Ask for permission: If in doubt on private land, get a clear yes from the owner or agent.
- Respect limits in public-facing businesses: You may enter during open hours and only in public areas. Back rooms and restricted zones are off-limits.
- Leave when told: If an owner, manager, security guard, or police officer tells you to leave, depart calmly. You can contest the situation later through proper channels.
- Special settings:
  - Apartments: Tenants and invited guests generally have permission for common areas, but posted rules still apply.
  - Schools and campuses: Campuses often use written trespass warnings and may restrict access to certain buildings.
  - Protests: Public sidewalks and parks are regulated by local rules and hours. Private property owners can limit or ban activities on their property.

## Summary Checklist

- Identify the property: home, business, school, posted land, or public area with hours.
- Was there an entry or did someone remain after permission ended?
- Was notice given? Signs, fences, locked doors, purple paint, posted hours, or a direct warning.
- Did the person know they were not allowed, or were they told to leave and refused?
- Consider defenses: consent, necessity, mistake of fact, public right-of-way, or lawful duties.
- For owners: post and maintain clear signs, mark restricted areas, document incidents, and issue written warnings when needed.
- For visitors: read signs, respect posted hours and restricted zones, and leave promptly if asked.

## Quick Reference

| Concept            | What it means                              | Example or tip                                   |
| ------------------ | ------------------------------------------ | ------------------------------------------------ |
| Unauthorized entry | Entering without permission                | Going into a closed store after hours            |
| Refusal to leave   | Staying after a clear warning to depart    | Ignoring a manager’s “You must leave now”        |
| Posted property    | Signs, fences, or purple paint give notice | “No Trespassing” signs along a fence line        |
| Consent/necessity  | Permission or emergency can be a defense   | Owner says “It’s okay,” or entry to avoid harm   |
| Penalties          | Fines, probation, short jail terms         | Misdemeanor in many states; higher if aggravated |

Related terms: Danger to Society, Manslaughter, Declaration under Penalty of Perjury, Indictment, Acquittal.

Criminal Trespass: Definition, Elements, Examples, and Practical Tips