Civil Trespass in California: Elements, Remedies & Defenses

Civil trespass in California lets you, as the property owner, sue someone who entered your land without permission and recover money for the harm, a court order stopping further entry, or both. It’s separate from any criminal case the state might bring, and the rules on what you can collect and how long you have to file turn on whether the intrusion was a one-time act, an ongoing problem, or something that damaged trees.

What You Have to Prove

California’s standard jury instructions require you to establish five things to win a civil 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.
You suffered actual harm.
The defendant’s entry was a substantial factor in causing that harm.¹

“Intentional” here does not mean the trespasser knew they were breaking the law. It means they intended the physical act that led to the entry. A neighbor who honestly believes a strip of land belongs to them can still be liable if the strip turns out to be yours.¹

If someone crossed your line but caused no measurable damage, you can still prove the trespass and collect nominal damages, often one dollar. That sounds trivial, but it puts the violation on the legal record, which matters if the same person comes back or if you later need to show you defended your rights.

One quick boundary: a civil trespass case is your private lawsuit for compensation and is entirely separate from any misdemeanor charge the state might file under Penal Code 602. Both can proceed at the same time over the same incident, but a criminal conviction sends the trespasser to jail or fines them for the state; a civil judgment pays you.²

What You Can Recover

Compensatory Damages

Compensatory damages restore the financial position you would have been in without the trespass. Under California Civil Code Section 3334, when someone wrongfully occupies your property, you can recover the value of using the property during the period of occupation (going back up to five years), reasonable repair or restoration costs, and any expenses you incurred to regain possession.³

The “value of use” figure is calculated as the fair rental value of the property or the actual benefit the trespasser gained from occupying it, whichever is greater. If the trespass resulted from an honest mistake, the number is capped at fair rental value.³ That gap matters. A squatter who knowingly occupies a vacant lot and runs a business from it could owe you the full business profits. Someone who misread a survey would owe only fair market rent.

Double and Triple Damages for Trees

Trespass that injures trees or timber triggers enhanced damages under California Civil Code Section 3346. The court must award at least double the actual damages regardless of whether the trespasser acted intentionally. If the trespass was willful and malicious, the court has discretion to triple the damages.⁴ A neighbor who cuts down mature trees on your side of the line is looking at a mandatory doubling, and the appraised value of established trees often runs into tens of thousands of dollars.

Punitive Damages

Punitive damages exist to punish, not compensate. California Civil Code Section 3294 permits them when the trespasser acted with malice, oppression, or fraud, and you have to prove that conduct by clear and convincing evidence. Malice means intent to injure or conscious disregard for others’ rights; oppression means cruel hardship inflicted with conscious disregard for your rights.⁵

In practice, punitive damages fit cases where the defendant kept entering after written warnings, damaged your land, and ignored cease-and-desist letters. Most straightforward trespass cases don’t clear the bar.

When to Ask for an Injunction Instead

Money doesn’t fix every trespass. When the intrusion is ongoing or likely to happen again, an injunction, which is a court order telling the trespasser to stop, is often the more useful remedy. It’s the standard tool for encroaching structures, repeated unauthorized entry, and defendants who show no sign of stopping voluntarily. A court can issue a temporary injunction while the case is pending or a permanent one as part of the final judgment. Violating an injunction is contempt of court, which carries its own penalties.

You don’t have to pick one remedy over the other. Most property owners in a serious trespass dispute pursue damages and an injunction together.

How Long You Have to File

You have three years from the date of the trespass to sue under California Code of Civil Procedure Section 338.⁶ How that clock runs depends on whether the trespass is permanent or continuing, and the same distinction controls what damages you can recover.

A permanent trespass is an intrusion carried out under circumstances showing the trespasser intends it to last indefinitely. A neighbor who pours a concrete foundation over your lot line with no plan to remove it is the classic example. The law treats the wrong as complete on the day of entry. The three-year clock starts then, and you recover damages for past, present, and future harm in a single lawsuit, usually measured by the drop in your property’s value.⁷ Miss the deadline and you lose the claim.

A continuing trespass is one that can realistically be stopped or removed: a neighbor who repeatedly dumps yard waste on your land, or a fence that encroaches a few feet and could be relocated at reasonable cost. Each new intrusion counts as a fresh injury, so the three-year window renews continuously. You can always sue for current and recent harm, but you can’t reach back more than three years, and you recover only for past and present harm in each action rather than future harm, because the trespass might end tomorrow.⁷

Waiting doesn’t necessarily kill a continuing trespass claim, but it does shrink the recoverable damages and creates other problems described below.

Defenses You Should Expect

Consent

Permission defeats a trespass claim, and consent can be either explicit or implied by circumstances such as a business opening its doors to customers. Consent is also limited in scope. A guest invited into your living room hasn’t been invited into your bedroom, and a utility worker allowed onto your land to read a meter can’t set up camp. If the defendant exceeded the permission you gave, liability still attaches.¹

Necessity

Someone who entered your property to prevent a greater harm, like a hiker escaping a wildfire or a driver avoiding a collision, may have a necessity defense. The defendant has to show the entry was needed to prevent serious harm to a person or property and was reasonable under the circumstances. Courts weigh whether realistic alternatives existed and whether the harm avoided was proportional to the intrusion.⁸

Easement

An easement gives someone a legal right to use part of your property for a defined purpose, such as crossing to reach a public road. Use within the scope of a valid easement isn’t trespass. Easements can come from written agreements or, in some situations, from long-running unauthorized use, which brings up the next point.

Public Authority

A police officer executing a valid search warrant, a building inspector conducting a lawful code inspection, or a utility worker accessing infrastructure under a regulatory right of way can rely on public authority. The official has to actually have legal authorization and stay within its limits; an officer who enters without a warrant or exceeds one doesn’t get the benefit.

The Real Danger of Waiting: Prescriptive Easements and Adverse Possession

Two doctrines punish property owners who tolerate unauthorized use for years.

A prescriptive easement is created when someone uses your land openly, notoriously, continuously, and hostilely (meaning without your permission) for an uninterrupted five years.⁹ If your neighbor has driven across the corner of your lot to reach their driveway every day for six years and you never objected, they may have earned a prescriptive easement that defeats your trespass claim for that specific use.

Adverse possession is more serious: it can transfer legal title. Under California Code of Civil Procedure Section 325, someone who occupies your land can claim ownership by showing:

Continuous occupation for five years without interruption.
Open and visible use, with the land either protected by a substantial enclosure or usually cultivated and improved.
Hostile claim, meaning occupation without the owner’s consent and as if the possessor has a right to the land.
Timely payment of all state, county, and municipal taxes assessed against the land for the entire five-year period, proven through certified county tax collector records.¹⁰

The tax requirement is what defeats most adverse possession claims in California, because it forces the possessor to leave a paper trail rather than simply squat. Even so, if someone is living on or actively using a portion of your land, treat the clock as already running. Giving the person written, revocable permission for the use is one way to defeat a future claim, because permission eliminates the “hostile” element.

What to Do Now

Document everything. Photograph the damage or intrusion, record dates and times of unauthorized entry, save correspondence with the trespasser, and order a professional survey if there’s any question about where the boundary actually sits. This is the evidence a court will want.

Send a written notice demanding the trespass stop. It puts the other side on notice that any entry is unauthorized, which shuts down an implied-consent argument, and it creates a record of deliberate disregard if the behavior continues, which helps if you later ask for punitive damages. Keep the tone firm and factual.

Don’t sit on the claim. Beyond the three-year filing deadline, delay opens the door to prescriptive easements and, in extreme cases, adverse possession. Courts also give less sympathy to owners who ignore a problem for years and then demand maximum damages.

1
Justia. CACI No. 2000 Trespass – Essential Factual Elements
2
California Legislative Information. California Penal Code 602 – Trespassing
3
California Legislative Information. California Code CIV 3334 – Wrongful Occupation of Real Property
4
Justia. CACI No. 2002 Trespass to Timber – Essential Factual Elements
5
California Legislative Information. California Code CIV 3294 – Exemplary Damages
6
California Legislative Information. California Code of Civil Procedure 338 – Actions to Be Commenced Within Three Years
7
Justia. CACI No. 2030 Affirmative Defense – Statute of Limitations
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