Civil Trespass in California: Elements, Damages & Defenses

If someone enters your land in California without permission, you can bring a civil trespass lawsuit to recover money for the harm and ask a court to order the intrusion stopped. Civil trespass in California is a private claim filed by the property owner, separate from any criminal case the state might pursue, and it covers everything from a neighbor’s encroaching fence to a stranger occupying a vacant lot. The remedies range from a single dollar in nominal damages to tripled damages for cut trees, plus injunctions with real enforcement power behind them.

What You Have to Prove

California’s standard jury instructions set out five things a property owner must establish to win a trespass case:

You owned, leased, occupied, or controlled the property.
The defendant intentionally, recklessly, or negligently entered the property, or caused someone or something else to enter it.
You did not give permission, or the defendant went beyond the permission you gave.
The entry caused you harm.
The defendant’s entry was a substantial factor in causing that harm.¹

The word “intentionally” is where people get tripped up. The defendant doesn’t have to know they’re trespassing or intend to break the law. They only have to intend the physical act of entering. Someone who honestly believes a strip of land is theirs can still be liable if the land turns out to be yours.¹

The “harm” element matters too. If a trespass caused no measurable loss, you can still prove it happened and collect nominal damages, often a single dollar, which formally vindicates your property rights.

Civil trespass is distinct from criminal trespass under Penal Code 602, which the state prosecutes and which can carry jail time. The same entry can trigger both proceedings at once, but your civil case runs on its own track, with a lower burden of proof (more likely than not) and compensation paid to you rather than fines paid to the state.²

How Long You Have to Sue

You have three years from the date of the trespass to file suit under Code of Civil Procedure Section 338.³ When that clock starts, and whether it ever stops, depends on whether the trespass is permanent or continuing.

A permanent trespass is one carried out under circumstances showing the trespasser means it to last indefinitely. The classic example is a concrete foundation poured over the property line with no plan to remove it. The wrong is treated as complete on the day of entry, the three-year clock starts then, and you can recover past, present, and future damages (typically the drop in your property’s value) in one lawsuit. Miss the deadline and you lose the claim.⁴

A continuing trespass is one that could reasonably be stopped or removed: a neighbor who keeps dumping yard waste, an encroaching fence that could be moved. Each new intrusion is treated as a fresh injury, so the three-year window renews continuously. You essentially never run out of time to sue, but you can only recover damages going back three years, and you may need more than one lawsuit to cover ongoing losses.⁴

What You Can Collect

Compensatory Damages

Compensatory damages aim to put you back where you would have been without the trespass. Civil Code Section 3334 lists what counts when someone wrongfully occupies real property: the value of using the property during the occupation (going back up to five years), reasonable repair or restoration costs, and expenses you incurred to regain possession.⁵

The “value of use” measure is worth understanding. It equals either the fair rental value of the property or the actual benefit the trespasser gained, whichever is greater. If the trespass was an honest mistake, the measure is capped at fair rental value. So a squatter who knowingly took over your vacant lot and ran a business from it could owe you the business profits, while someone who misread a survey would owe only fair market rent.⁵

Nominal Damages

When a trespass clearly occurred but caused no measurable financial harm, courts can award nominal damages, usually a dollar. The amount isn’t the point. A nominal award creates a legal record of the trespass, which helps if the same person comes back or if you later need to show you actively defended your boundary.

Double or Triple Damages for Trees and Timber

Trespasses that injure trees or timber trigger enhanced damages under Civil Code Section 3346. The court must award at least double the actual damages, regardless of intent, and may triple them if the trespass was willful and malicious.⁶ Mature trees can be worth tens of thousands of dollars individually, so a neighbor who clears vegetation on the wrong side of the line can face a very expensive judgment very quickly.

Punitive Damages

Punitive damages punish especially bad conduct and go beyond compensation. Civil Code Section 3294 allows them when the trespasser acted with malice, oppression, or fraud, proved by clear and convincing evidence.⁷ In trespass, that generally means the defendant knew they had no right to enter, did it anyway, and showed deliberate disregard for your rights. Someone who ignores written warnings, damages the land, and keeps coming back is the kind of defendant who draws punitive exposure. Most ordinary trespass cases don’t reach that bar.

Injunctive Relief

Money doesn’t fix every trespass. When the intrusion is ongoing or likely to recur, you can ask the court to order the trespasser to stop. Injunctions are the main remedy for encroaching structures, repeat entries, and situations where the trespasser shows no sign of stopping on their own. A temporary injunction can issue while the case is pending, and a permanent one as part of the final judgment. Violating either is contempt of court, which carries its own penalties.

What the Trespasser May Argue Back

Defendants have several standard defenses, and knowing them before you file helps you anticipate the fight.

Consent. If you gave permission to enter, there’s no trespass. Consent can be explicit or implied by circumstances, and it can be limited in scope. A utility worker invited onto your land to read a meter doesn’t have permission to wander off and set up elsewhere. Exceeding the scope of permission still creates liability.¹

Necessity. Someone who enters your property to prevent a greater harm, like a hiker fleeing a wildfire or a driver swerving to avoid a collision, can raise necessity. The defendant must show the entry was needed to prevent serious harm to a person or property and that it was reasonable under the circumstances.⁸ Courts weigh whether realistic alternatives existed and whether the harm avoided was proportional to the intrusion.

Easements. An easement gives someone the legal right to use part of your property for a specific purpose, such as crossing to reach a public road. Use within the scope of a valid easement is not trespass. Prescriptive easements are the harder version: they’re created by use rather than agreement, and in California a person can establish one by showing open, notorious, continuous, and hostile use of your land for an uninterrupted five years.⁹ “Hostile” here just means without your permission. If a neighbor has been cutting across the corner of your lot daily for six years and you never objected, they may have acquired the right to keep doing it.

Public authority. A government official acting within the scope of lawful authority (a police officer executing a valid warrant, a building inspector conducting a lawful inspection, a utility worker using a recorded right of way) can defend on that ground. The official has to actually have the authorization and stay within its limits.

The Long-Term Risk of Letting a Trespass Sit

Beyond the shrinking damages window, delay creates a bigger problem: a trespasser who occupies your land long enough and meets strict statutory conditions can claim legal title to it through adverse possession. Code of Civil Procedure Section 325 requires:

Continuous occupation for five years.
Open and visible use, with the land either protected by a substantial enclosure or usually cultivated and improved.
A hostile claim, meaning occupation without your consent and as if the possessor has a right to the land.
Timely payment of all state, county, and municipal taxes on the land for the full five-year period, proven by certified county tax collector records.¹⁰

The tax requirement defeats most adverse possession claims in California, because stealth occupation can’t produce a tax payment record. Still, if someone is actively living on or using part of your land, the clock may be running. Giving written, revocable permission for the use defeats a future claim by eliminating the “hostile” element.

What to Do Now

Document the trespass thoroughly. Photograph any damage, log dates and times of unauthorized entry, save every message exchanged with the trespasser, and commission a professional survey if there’s any question about where the boundary runs. This evidence anchors both your damages claim and any request for an injunction.

Send a written notice telling the trespasser to stop. Done early, it eliminates any argument that you implicitly consented. Done repeatedly and ignored, it builds the record of deliberate disregard that supports punitive damages. Keep it firm and factual.

Act before the three-year window closes and before a prescriptive easement or adverse possession claim can mature. Courts are also less sympathetic to owners who sit on their rights for years and then demand maximum relief. A trespass taken seriously early is usually a trespass resolved cheaply.

1
Justia. CACI No. 2000 Trespass – Essential Factual Elements
2
California Legislative Information. California Penal Code 602 – Trespassing
3
California Legislative Information. California Code of Civil Procedure 338 – Actions to Be Commenced Within Three Years
4
Justia. CACI No. 2030 Affirmative Defense – Statute of Limitations
5
California Legislative Information. California Code CIV 3334 – Wrongful Occupation of Real Property
6
Justia. CACI No. 2002 Trespass to Timber – Essential Factual Elements
7
California Legislative Information. California Code CIV 3294 – Exemplary Damages
8
Justia. CACI No. VF-2001 Trespass – Affirmative Defense – Necessity
9
Justia Law. Warsaw v. Chicago Metallic Ceilings, Inc.
10
California Legislative Information. California Code of Civil Procedure 325 – Adverse Possession