Civil trespass is a private lawsuit, not a criminal charge: it lets whoever is in possession of a piece of property sue someone who physically intruded on it, and win money or a court order even if nothing was damaged. Because it is an intentional tort, the person suing does not have to prove the intruder meant any harm or even knew they had crossed a boundary. The deliberate act of entering, placing something, or staying is enough.
What Counts as Civil Trespass
Tort law splits wrongful acts into intentional torts, negligence, and strict liability. Trespass to land is intentional because it requires a deliberate physical act rather than an accident. The protected interest is possession: the right to decide who and what comes onto the land you hold.1Legal Information Institute. Trespass
The intent standard trips people up. You do not have to intend to trespass. You only have to intend the physical act that produced the entry. If you meant to walk, drive, or place the object, that satisfies intent, whether or not you knew you had crossed a property line. A hiker who honestly thinks a trail is public is still liable when the trail cuts through private land. A contractor who builds a fence two feet over the line because of a bad survey is still trespassing. The rule is strict because any softer version would force owners to prove what was going on inside the intruder’s head.1Legal Information Institute. Trespass
The invasion has to be physical. Light, sound, and odors drifting across a property line are not trespass, though they may support a nuisance claim. Nuisance protects use and enjoyment; trespass protects exclusive possession. Smoke particles and chemical particulates sit right on the edge, and courts have gone both ways on whether they are tangible enough to count. Owners often plead both claims and let the court sort it out.
The Forms Trespass Can Take
Walking or driving onto land uninvited is the obvious version, but the tort reaches much further.
Direct and Indirect Entry
You can trespass without ever setting foot on the property. Throwing debris over a fence, regrading your lot so runoff flows onto a neighbor’s, running pipes under their parcel, or stringing wires across their airspace all qualify. The question is whether a tangible, physical thing ended up on their land because of something you did.
Staying After Permission Ends
Someone who enters with permission but refuses to leave after it is revoked becomes a trespasser. A dinner guest who will not go, a contractor lingering after the job wraps, a tenant holding over past a lease — all fit. Permission to be on property is a license, and the person in possession can withdraw that license at any time. Once it is withdrawn, the person has a reasonable period to leave before liability attaches.
Leaving Objects Behind
Personal property left on someone else’s land after your right to keep it there expires is also trespass. A construction dumpster still sitting on a neighbor’s lot after the project ends, equipment left on leased land after the lease ends, a fallen tree you are responsible for but will not clear — each creates ongoing liability.2Legal Information Institute. Continuing Trespass
Continuing Trespass
When the intrusion never stops, the law treats it differently from a one-time entry. A structure encroaching across a boundary, a drainage pipe pushing water onto your lot every time it rains — these are continuing trespasses. The statute of limitations does not start running until the intrusion ends, which gives the owner far more time to sue and makes an injunction a realistic remedy. For intruders, liability piles up by the day. Courts in most states roll recurring injuries, like intermittent flooding, into one case rather than forcing separate suits for each occurrence.2Legal Information Institute. Continuing Trespass
Airspace and Drones
Property rights extend upward. The Supreme Court held in United States v. Causby that landowners hold rights to the airspace above their land at least as high as they can occupy or use in connection with it, and flights low and frequent enough to interfere with that use can be a trespass or a taking.3Justia US Supreme Court. United States v. Causby, 328 U.S. 256 (1946) Drones complicate the picture. The FAA caps most recreational and small commercial drone flights at 400 feet, and navigable airspace for manned aircraft generally begins at 500 feet, leaving the space between your roof and 500 feet in a gray zone where states still enforce their own trespass laws.4Federal Aviation Administration. Airspace Access for UAS No universal altitude line separates your airspace from public airspace for drones, and a “No Drone Zone” sign on private land controls only takeoff and landing on the ground beneath it, not the sky above.
Who Has the Right to Sue
The claim belongs to whoever holds possessory rights at the time of the intrusion, which is not always the person on the deed. A tenant renting an apartment can sue a trespasser because the lease gives the tenant the immediate right to control who enters. A landlord who has leased out property generally cannot sue for trespass during the lease term, because the tenant holds the possessory interest. An owner of a vacant lot still has constructive possession and can sue someone who dumps trash on it. The person with the most immediate power to exclude others has standing to bring the claim.
Landlords Entering Rented Units
This same framework turns landlord entry into a flashpoint. Once a lease is signed, the tenant controls access. A landlord who enters without proper notice or outside the circumstances the law allows can face a trespass claim from their own tenant. Most states require at least 24 hours’ written notice before entry and limit it to ordinary business hours for purposes like repairs, inspections, or showings. Genuine emergencies, such as a burst pipe or fire, are the main exception.
What You Can Recover
Trespass is unusual because you do not have to prove any actual harm to win. The unauthorized entry alone establishes liability, and courts award nominal damages, often a single symbolic dollar, just to vindicate the right that was violated. That token award is not pointless. It creates a court record that the entry was unauthorized, which can block the intruder from later claiming a prescriptive easement based on long, unchallenged use.
When the trespass causes real harm, such as a damaged fence, destroyed landscaping, contaminated soil, or trampled crops, compensatory damages cover repair costs and any resulting drop in property value. The defendant is responsible for all direct consequences of the entry, which can include lost rental income if part of the property became unusable.
Punitive damages are reserved for trespassers who act with malice or reckless disregard for the owner’s rights. A neighbor who accidentally encroaches by a few inches will not face them, but someone who keeps entering after warnings, destroys property out of spite, or knowingly dumps hazardous waste might. The standard requires showing the defendant proceeded intentionally with conduct they knew was likely to cause harm.5Legal Information Institute. Punitive Damages
Money does not solve every trespass problem. When the intrusion is ongoing or likely to recur, a court can issue an injunction ordering the trespasser to stop and remove whatever is causing it. Injunctions are common in continuing trespass cases such as encroaching structures, drainage diversions, and repeated unauthorized access, where damages alone would just put a price on each new violation without stopping it.2Legal Information Institute. Continuing Trespass
Defenses a Trespasser Can Raise
Not every unauthorized entry ends in liability. Several defenses can cut down or eliminate what the owner recovers.
Consent is the first. If the person in possession gave permission, explicitly or through conduct, there is no trespass. A store open to the public grants implied consent for customers during business hours. A homeowner who waves a neighbor through the yard grants a license. But consent can be limited in scope and revoked at any time. A shopper who refuses to leave after being asked exceeds the implied license and becomes a trespasser.
Private necessity applies when someone enters your property to protect their own interests during a genuine emergency, such as mooring a boat to your private dock during a sudden storm. It is a qualified defense: the trespasser gains a privilege to stay for the duration of the emergency and cannot be forcibly removed, but they must pay for any actual damage they cause. They escape nominal and punitive damages, not the repair bill.6Legal Information Institute. Private Necessity
Public necessity goes further. When someone enters to protect the community as a whole, such as firefighters demolishing a building to create a firebreak or emergency workers diverting floodwater, the defense is absolute. The trespasser owes nothing, not even compensation for actual damage.7Legal Information Institute. Public Necessity
How Long You Have to Sue
Filing deadlines for civil trespass claims typically fall between two and five years from the date of the trespass, with the exact window set by state law. For a one-time entry, the clock starts the day the trespass occurs. For continuing trespass, it does not start until the intrusion stops, which gives owners substantially more time to act. Missing the deadline bars the claim entirely, no matter how clear the trespass was.
Why Ignoring a Trespasser Is Risky
A trespasser who occupies your land long enough can eventually take legal title through adverse possession. The claimant has to meet five elements continuously over the full statutory period:
- Continuous possession for the full period, which ranges from roughly 5 to 20 years depending on the state.
- Hostile possession, meaning it infringes on the true owner’s rights and happens without consent.
- Open and notorious occupation, obvious enough that a reasonably attentive owner would notice.
- Actual physical presence on and use of the property.
- Exclusive control, as if the claimant were the owner, keeping others off.
This is why nominal damages matter even without real harm. A court judgment that the entry was unauthorized breaks the hostile and continuous elements, resets the clock, and keeps the trespasser from building toward a title claim.8Legal Information Institute. Adverse Possession
Prescriptive easements work on the same principle but produce a smaller result. Instead of ownership, the user gains a permanent right to use the property in a specific way, such as a path across your land. The use does not need to be exclusive. Someone can acquire a prescriptive easement while sharing the path with the owner, and the required duration tends to run longer than the adverse possession period in many states.
What a Trespass Lawsuit Actually Costs
Court filing fees vary widely by jurisdiction and the amount of damages sought, running from under $100 in small claims to several hundred dollars in courts of general jurisdiction. Process server fees to deliver the summons generally run $40 to $200. Attorney hourly rates for property and tort litigation vary by market, with $250 to $350 per hour a common range. Small claims court is faster and cheaper for straightforward cases involving minor encroachments and modest damages, though recovery is capped, often between $5,000 and $10,000 depending on the state.
Many disputes, especially between neighbors over boundaries, settle through negotiation or mediation without a full trial. A demand letter from an attorney often resolves the situation on its own, particularly when the trespasser did not realize they were encroaching, and that letter costs a fraction of a lawsuit.