California trespassing laws for private property make unauthorized entry a criminal offense, with consequences that range from a $75 fine for a first-time infraction on posted land to as much as three years in custody for aggravated trespassing that follows a credible threat of violence. Which penalty applies depends on where you entered, what you did once you were there, and whether the owner gave the notice the law requires.
What Counts as Trespassing in California
Penal Code 602 is the main trespassing statute, and it covers more ground than most people realize. It lists more than two dozen specific acts that qualify as criminal trespass, each treated as a misdemeanor by default. The common ones include entering and occupying property without consent, refusing to leave after the owner or a peace officer asks you to, driving a vehicle onto private land you know isn’t open to the public, and destroying signs or fences that mark boundaries. Less obvious acts also fall inside the statute: cutting down trees on someone else’s land, digging up soil from a lot inside city limits, taking shellfish from privately owned oyster beds, and entering an animal-raising facility without authorization.1California Legislative Information. California Penal Code 602 – Trespass
Every trespassing charge requires willful conduct. You must have entered or stayed on the property on purpose. Walking onto land because you genuinely didn’t know it was private, or because you confused it with an adjacent public trail, is not the same as ignoring a fence or a posted sign. Prosecutors have to show that you knew you lacked permission or that you refused to leave once told.
Entering Someone’s Home
Penal Code 602.5 creates a separate offense for entering a noncommercial dwelling without the consent of the owner or resident. This includes houses, apartments, and other residential spaces, and it applies even when no threat or violence accompanies the entry. Public officers performing lawful duties are exempted. A conviction carries the standard California misdemeanor exposure of up to six months in county jail, a fine of up to $1,000, or both.2California Legislative Information. California Penal Code 19 – Misdemeanor Punishment
The Penalty Ladder
Infractions on Posted or Enclosed Land
Simple trespassing on properly posted, fenced, or cultivated land starts as an infraction. The first offense is a flat $75 fine. A second offense on the same land, or on an adjoining parcel belonging to the same owner, raises the fine to $250. For both, you can forfeit bail rather than appear in court, and no further proceedings follow. A third or subsequent offense on that same land is charged as a misdemeanor.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land
Misdemeanor Trespassing
Most acts listed in PC 602 are misdemeanors from the start. The default sentence is up to six months in county jail, a fine of up to $1,000, or both.2California Legislative Information. California Penal Code 19 – Misdemeanor Punishment Judges can also impose probation with conditions, including stay-away orders that bar you from returning to the property. Violating a stay-away order creates fresh legal problems on top of the original conviction.
Aggravated Trespassing
Penal Code 601 covers a narrower and more serious situation: making a credible threat to cause serious physical injury to another person, with intent to place that person or their immediate family in reasonable fear, and then entering that person’s home or workplace within 30 days. The offense also reaches real property immediately adjacent to the residence. It is a wobbler, meaning the prosecutor can file it as a misdemeanor or a felony. A misdemeanor conviction carries up to one year in county jail, a fine of up to $2,000, or both. A felony conviction carries 16 months, two years, or three years in county jail.4California Legislative Information. California Penal Code 601 – Trespass
What Owners Have to Post
Land that is not fenced or actively cultivated has to be marked to support a trespassing charge under Penal Code 602.8. Owners must post “no trespassing” signs at intervals of no fewer than three per mile along every exterior boundary, and at every road or trail that enters the property. Miss an entry point or let vegetation grow over a sign, and the basis for a criminal charge weakens. Land that is already fenced or under cultivation satisfies the notice requirement on its own, because the barrier or the visible farming use tells a reasonable person the property is private.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land
Defenses to a Trespassing Charge
Consent is the strongest defense. If the owner gave you permission to be on the property, express or implied, there is no trespass. Disputes over whether permission was actually given come up often in cases involving shared driveways, neighbors, and business visitors who overstay.
Lack of willfulness is the second major defense. If you crossed onto private land because there were no visible markers, or you followed a trail that turned out to cross a property line, the intent element is missing. That defense pairs closely with insufficient signage: on unfenced, uncultivated land, a prosecutor whose signs did not meet the PC 602.8 standard has a hard case.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land
PC 602.8 also lists specific exemptions. People engaged in lawful labor union activities permitted under the California Agricultural Labor Relations Act or the National Labor Relations Act cannot be charged under this section. The same protection extends to anyone exercising rights protected by the California or U.S. Constitution, licensed land surveyors performing authorized work, and process servers making lawful service.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land
Options for Property Owners
Criminal charges are not the only route. You can sue in civil court for damages caused by the trespass, including the cost of repairing damage, lost use of the property during the trespass, and any permanent reduction in market value. Even where actual damage is minimal, courts can award nominal damages for the violation of property rights. The statute of limitations is three years from the date of the trespass, and for ongoing trespass or a person who keeps returning, the clock may reset with each new entry.5California Legislative Information. California Code of Civil Procedure 338 – Three-Year Statute of Limitations
For persistent problems, an injunction is often more useful than money. A court order barring the person from returning lets you call law enforcement immediately if they show up again, because violating the order carries its own penalties. Where the conduct is a course of harassment that serves no legitimate purpose and causes substantial emotional distress, a civil harassment restraining order under Code of Civil Procedure 527.6 may fit.6California Legislative Information. California Code of Civil Procedure 527.6 – Civil Harassment Prevention
Using Force Against an Intruder
Penal Code 198.5 creates a legal presumption in favor of people who use force against home intruders. If someone unlawfully and forcibly enters your residence, you are presumed to have held a reasonable fear of imminent death or great bodily injury when you used force against them. The presumption applies to anyone in the household, not only the owner, and it shifts the burden to the prosecution to prove the fear was not reasonable.7California Legislative Information. California Penal Code 198.5 – Presumption of Reasonable Fear
The word “forcibly” matters. Someone who wanders through an open door does not necessarily trigger the presumption the same way a person kicking in a door does. You also need to have known or had reason to believe the entry was unlawful and forcible. And the protection is limited to the residence. It does not cover open acreage, barns, or commercial buildings, and it does not authorize force against someone merely walking across a yard.
When a Trespasser Tries to Claim the Land
The most serious long-term risk from a trespasser is adverse possession, a doctrine that can transfer legal title to someone who occupies your land long enough. California requires the occupant to satisfy every element of a strict test continuously for five years: open and notorious possession, hostile to the true owner, without permission, exclusive use, and payment of all state, county, and municipal property taxes for the full period. Where the claim is not based on a written instrument, the land must also have been either protected by a substantial enclosure or visibly cultivated and improved throughout the five years.8California Legislative Information. California Code of Civil Procedure 325 – Adverse Possession Requirements
The tax requirement is the strongest safeguard for property owners. Because the occupant has to prove five years of timely payments through certified county tax collector records, most casual squatters never come close. Monitor your property, remove unauthorized occupants promptly, and keep your own tax payments current. Any gap in the squatter’s timeline or tax history defeats the claim.