To file a trespassing complaint, you have two paths and can use both: report the incident to local police for criminal enforcement, and file a civil lawsuit if you want money damages or a court order keeping the person off your property. The police report is free and handled by the prosecutor; the civil case is yours to file and pay for, but it’s the only route to compensation. Whichever path you take, the strength of your complaint depends on two things you control before you ever call a courthouse: whether the trespasser had clear notice they weren’t welcome, and whether you have evidence to prove what happened.
Criminal and Civil Complaints Are Not the Same Thing
A criminal trespass complaint asks the government to prosecute. Once you report it, the prosecutor decides whether to bring charges, and the state has to prove guilt beyond a reasonable doubt. A civil trespass lawsuit is one you file yourself, and you only need to show your version is more likely true than not, a standard called preponderance of the evidence.1Cornell Law School. Burden of Proof The criminal case punishes the trespasser. The civil case compensates you. They run on separate tracks and you can pursue both at once.
Which one you need depends on what you want out of it. If someone damaged a fence, cut timber, or destroyed crops, a criminal citation won’t put money in your pocket. If someone keeps coming back despite warnings, a civil injunction ordering them to stay away is enforceable through contempt in a way a police visit is not. If you want both punishment and compensation, use both systems.
Give the Trespasser Clear Notice First
Most trespass cases turn on whether the person knew they were unwelcome. Someone who wandered onto unmarked rural land has a real defense. Someone who ignored posted signs, a written warning, or a police-issued trespass warning does not. Establishing notice before you file anything strengthens both a police report and a lawsuit.
Posted Signs
No-trespassing signs are the baseline. Requirements vary by state: some mandate specific dimensions, lettering heights, and spacing along the boundary; others simply require signs “reasonably likely to come to the attention of intruders.” Post them at every entrance and along boundaries, keep the lettering legible, include your name or an authorized agent, and walk the boundary at least once a year to replace anything faded or fallen.
Written Warnings
A direct warning to a specific person carries more weight than general signage, but a face-to-face conversation is hard to prove months later. Send a written trespass notice by certified mail. It should identify the property by address, name the person being warned, state clearly that they are not permitted to enter, and note that further entry will result in criminal charges or a lawsuit. Keep a copy and the certified mail receipt.
Police-Issued Trespass Warnings
When police respond to a trespass call, officers in many jurisdictions can issue an official trespass warning on the spot. That warning goes into law enforcement records and makes any future entry much easier to prosecute. Ask the responding officer whether your department issues these, and request a copy.
Filing the Police Report
Call your local law enforcement through the non-emergency line to report a trespass that has already happened. If someone is on your property right now and refuses to leave, call 911 instead. Give the dispatcher or officer the date, time, and location, a description of the person, and what they did. Have your evidence ready: photos, security footage, witness names, and copies of any prior warnings.
Officers may visit the property, interview witnesses, and review your evidence before writing a report. They have discretion over whether to issue a citation, arrest the person, or send the case to a prosecutor. A first-time trespass with no property damage usually draws a warning. Repeat offenses or damage tilt the response toward charges.
Get a copy of the report and the report number before you leave. If you later file a civil lawsuit or seek a restraining order, courts expect to see it.
Filing the Civil Lawsuit
If you want damages, an injunction, or both, you have to file a case yourself. Three steps: draft and file the complaint, pay the filing fee, and serve the defendant.
Drafting and Filing the Complaint
The complaint is a written document that identifies you as the plaintiff, names the trespasser as the defendant, describes what happened (dates, the property, the nature of the intrusion), and states what you want from the court. File it with the court that has jurisdiction over the location of the trespass. Small claims court or a local trial court handles most modest-damage disputes; cases with significant damage or a request for an injunction generally go to a court of general jurisdiction.
Filing fees run from roughly $50 to over $400 depending on the court, the case type, and the amount claimed. If you can’t afford the fee, most courts offer a waiver based on financial hardship, but you’ll have to submit a separate application with proof of income.
Serving the Defendant
Filing isn’t enough. The defendant has to be formally notified through service of process. The summons and complaint generally must be delivered in person to the defendant or left with a suitable adult at their home or workplace. Mailing alone is usually not sufficient, though some jurisdictions allow certified mail as an alternative. You cannot serve the papers yourself; it has to be done by another adult who is not a party to the case, typically a professional process server or a sheriff’s deputy.2Cornell Law School. Service of Process
Professional process servers charge roughly $40 to $100 for standard service. Sheriff’s offices in many counties offer a lower flat fee. Rush jobs and hard-to-find defendants cost more. Factor this in when deciding whether a civil case makes sense for the damage involved.
Evidence That Actually Holds Up
Start collecting evidence the moment you know about the trespass, and keep it in one place. In a civil case, the property owner has to prove trespass by a preponderance of the evidence.1Cornell Law School. Burden of Proof You do not have to prove the trespasser intended to break the law; you have to show they intentionally entered without permission. Someone who walked onto your land thinking it was public still committed a trespass.3Cornell Law School. Trespass
- Photos and video of any intrusion, damage, footprints, tire tracks, or the trespasser. Smartphone cameras embed date, time, and GPS data, which makes the images harder to challenge.
- Security camera footage, saved immediately. Many systems overwrite on a loop, and a few days of delay can mean losing the recording. Export the clips with the date and time overlay intact.
- Witness statements from neighbors or others who saw the person, written down, signed, and dated.
- Digital communications where the trespasser acknowledges being on the property. Screenshot texts, emails, or social media posts and preserve the originals.
- Proof of notice: photographs of your posted signs in place, copies of any written warnings, certified mail receipts, and records of police-issued trespass warnings.
Do Not Miss the Filing Deadline
Every state sets a statute of limitations for civil trespass. Miss it and you lose the right to sue, no matter how strong the evidence is. Deadlines run from about two years in some states to six in others, with three to four being most common. The clock generally starts on the date of the trespass. If the trespass is ongoing, some states restart the clock with each new intrusion, but do not count on that without confirming your state’s rule. File sooner rather than later. Evidence degrades, witnesses forget, and footage gets overwritten.
Defenses You Should Expect
A trespasser who fights back will raise one of a handful of predictable defenses. Anticipating them tells you what evidence to gather now.
Consent or Implied Permission
The most common defense is that you gave permission, either directly or through past conduct. If you have let someone cross your land before and never revoked it, they will argue implied consent. A dated written trespass warning draws a clear line: before, there may have been permission; after, there was not.
Easements and Rights of Way
An easement gives someone a legal right to use part of your land for a defined purpose, like crossing to reach a road. Easements can be created by written agreement, long-term use, or necessity. A neighbor who has openly used a path across your property for years or decades may have acquired a prescriptive easement that gives them a right to continue without any formal agreement.4Cornell Law School. Easement A title search or current survey can reveal recorded easements before you file and find out mid-case.
Disputed Boundaries
Neighbors often claim they thought they were on their own land. A professional land survey resolves this, and having one on file before you file the complaint eliminates the defense before trial.
Necessity
Someone who enters your property to escape an emergency, such as a fire, flood, or violent attack, can claim necessity. Private necessity is a qualified defense: it justifies the entry but does not erase liability for actual damage caused.5Cornell Law School. Private Necessity A boater who ties up at your dock during a sudden storm had a right to be there while the danger lasted, but still owes you for damage to the dock. No emergency, no defense.
Counterclaims
Trespassers sometimes counterclaim for harassment, false accusations, or assault if there was a confrontation. Avoid physical confrontation. Document everything calmly and let law enforcement and the courts handle it. A property owner who chases someone off with threats hands the other side a counterclaim.
What You Can Recover
Outcomes in a civil trespass case vary with what happened and what you can prove.
- Nominal damages. Even if there was no physical harm, you can still win. A property owner does not have to prove actual damage to recover for trespass to land; a nominal award is permissible on its own. The dollar amount is small, but the judgment is a legal record that trespass occurred, which matters for future enforcement.3Cornell Law School. Trespass
- Compensatory damages for actual harm, like damaged fences, destroyed crops, or lost rental income.
- Injunctive relief. A court can order the trespasser to stay off your property when money alone won’t fix the problem, such as with repeated intrusions. The court weighs whether you would suffer irreparable harm without the order and how the hardship balances. Violating an injunction can result in contempt of court.6Cornell Law School. Injunctive Relief
- Restraining orders when the trespass comes with harassment or threats, prohibiting the person from coming near you or your property.7Cornell Law School. Restraining Order
- Punitive damages, reserved for especially egregious conduct like willful, repeated trespass after clear warnings. Rare.
Why Waiting Makes It Worse
Ignoring repeated trespass is not just tolerating an annoyance. Under adverse possession, someone who uses another person’s land openly, continuously, and without permission for a statutory period can eventually claim legal ownership.8Cornell Law School. Adverse Possession The period varies by state, but years or decades of unchallenged use is how these claims take root. Posted signs, written warnings, police reports, and filed complaints all interrupt the kind of use adverse possession requires. Property owners who assume trespass will resolve itself sometimes end up defending their own title.
If the Trespasser Lives in Another State
File the case where the trespass happened. If you win and need to enforce the judgment where the defendant lives, the Full Faith and Credit Clause of the U.S. Constitution requires state courts to honor judgments from other states, as long as the original court had proper jurisdiction.9Cornell Law School. Full Faith and Credit Serving a defendant across state lines may require following the other state’s rules for out-of-state service, which adds time and cost.