California trespassing laws for private property are set out mainly in Penal Code sections 602, 602.5, 602.8, and 601, and penalties run from a $75 infraction fine for a first-time entry onto posted land all the way to three years in county jail for aggravated trespass involving a credible threat of violence. Where your case lands on that scale depends on what you entered, how the owner marked the property, and whether anything else happened once you were there.
What Makes Entry Criminal
Penal Code 602 is the main trespassing statute, and it lists more than two dozen specific acts that count as criminal trespass. The most common include entering and occupying property without consent, refusing to leave after the owner or a peace officer tells you to, driving a vehicle onto private land that is not open to the public, and destroying signs or fences that mark the boundary.1California Legislative Information. California Penal Code 602 – Trespass
Every version of the offense turns on willfulness. You have to have entered or stayed on the property on purpose. Walking onto land because you genuinely did not 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 you knew you lacked permission, or that you refused to leave after being told.
The statute also sweeps in acts people do not always picture as trespassing: cutting down trees on another person’s land, digging up soil from a lot inside city limits, removing shellfish from privately owned oyster beds, and entering an animal-raising facility without authorization.1California Legislative Information. California Penal Code 602 – Trespass That breadth is worth knowing. Charges can arise in situations where the person had no sense they were breaking the law at all.
Entering Someone’s Home
Penal Code 602.5 creates a separate offense for walking into a residence uninvited. It covers noncommercial dwellings, including houses and apartments, and requires that you willfully enter or stay inside without the consent of the owner or occupant. Public officers lawfully doing their jobs are exempt.
Even without a threat or any damage, going into an occupied home can support a misdemeanor conviction punishable by up to six months in county jail, a fine of up to $1,000, or both under California’s standard misdemeanor sentencing.2California Legislative Information. California Penal Code 19 – Misdemeanor Punishment
Penalties by Offense Level
Infractions on Posted or Fenced Land
Simple trespassing on properly posted, fenced, or cultivated land starts as an infraction rather than a misdemeanor. A first offense carries a flat $75 fine. A second offense on the same land, or on any adjoining parcel owned by the same person, raises the fine to $250.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land For both levels you can forfeit bail instead of appearing in court, and no further proceedings follow.
A third or later offense on that same land crosses into misdemeanor territory.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land Repeated visits to the same property get treated with increasing seriousness, even if nothing was damaged and no one was threatened.
Misdemeanor Trespassing
Most of the acts listed in PC 602 are misdemeanors from the start. The default penalty 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 Some subsections carry their own schedules. Trespass at airport terminals or passenger vessel facilities, for example, begins at a $100 fine but climbs to the full misdemeanor range if you refuse to leave after a peace officer tells you to.1California Legislative Information. California Penal Code 602 – Trespass
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 trespass conviction.
Aggravated Trespassing
Aggravated trespass under Penal Code 601 is a different kind of charge. It applies when someone makes a credible threat to cause serious physical injury to another person, intending to frighten that person or their immediate family, and then enters that person’s home or workplace within 30 days of the threat. The home element extends to any real property directly adjacent to the residence.4California Legislative Information. California Penal Code 601 – Trespass
This is a wobbler, meaning the prosecutor can file it as a misdemeanor or a felony. As a misdemeanor it carries up to one year in county jail, a fine of up to $2,000, or both. As a felony the sentence rises to 16 months, two years, or three years in county jail.6California Legislative Information. California Penal Code 601 – Trespass
When Signage and Notice Decide the Case
If your property is not fenced or actively cultivated, you cannot assume people know they are unwelcome. Penal Code 602.8 requires “no trespassing” signs posted at intervals of no fewer than three per mile along every exterior boundary and at every road or trail that enters the property.5California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land Miss an entry point, or let vegetation grow over a sign, and the basis for a criminal charge weakens.
Land already enclosed by a fence or under active cultivation satisfies the notice requirement on its own. The physical barrier or the farming use tells a reasonable person they are looking at private property. On large stretches of undeveloped land, signs do the work the fence would otherwise do, and each sign has to be readable and unobstructed. If the signage does not meet the standard, even an infraction is hard to pursue against someone who wandered onto the land.
Defenses to a Trespassing Charge
Consent is the strongest defense in most cases. If the owner gave you permission to be on the property, there is no trespass. Permission can be express or implied, and disputes about whether it was actually given come up constantly in cases involving shared driveways, neighbor arrangements, and business visitors who overstay.
Lack of willfulness is the other major defense. Trespass requires intentional conduct, so an accidental crossing with no visible markers, or a trail that turned out to cross a property line, undercuts the intent element. This pairs with the signage rules. If the owner failed to post signs meeting PC 602.8, the prosecution’s case for charges on unfenced, uncultivated land becomes much harder to make.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land
PC 602.8 also carves out 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 reaches anyone exercising rights protected by the California or U.S. Constitution, licensed land surveyors doing authorized work, and process servers making lawful service.3California Legislative Information. California Penal Code 602.8 – Trespass on Cultivated or Enclosed Land
What a Property Owner Can Do
Using Force Against an Intruder
Penal Code 198.5 gives homeowners a legal presumption when they use force against intruders. If someone unlawfully and forcibly enters your residence, you are presumed to have held a reasonable fear of imminent death or serious injury when you used force. The presumption applies to anyone in the household, not only the owner.7California Legislative Information. California Penal Code 198.5 – Presumption of Reasonable Fear
The word that does the work is “forcibly.” Someone who walks through an open door does not necessarily trigger the presumption the way a person kicking in the door does. You also need to have known or had reason to believe the entry was unlawful and forcible. The presumption applies to your residence, not to open acreage, barns, or commercial buildings, and it covers genuine fear of death or serious injury. Shooting at someone for walking across the yard does not fit within it.
Suing for Damages
Criminal charges are not the only option. You can also sue for damages in civil court, recovering compensation for the actual harm, including repair costs, lost use of the property, and any permanent reduction in market value. The deadline to file a civil suit for trespass on real property is three years from the date of the trespass.8California Legislative Information. California Code of Civil Procedure 338 – Three-Year Statute of Limitations If the trespass is ongoing or the person keeps returning, the clock may reset with each new entry. Courts can award nominal damages for the violation itself even when actual harm is minimal.
For a repeat trespasser, a court injunction is often more useful than a money award. The order gives you grounds to call law enforcement immediately if the person comes back, since violating a court order carries its own penalties.
Guarding Against an Adverse Possession Claim
Long-term trespass can mature into an adverse possession claim, where the occupant tries to take legal title to your land. California requires every element of a strict five-part test, met continuously for five years: the occupant must possess the land openly and obviously, treat it as their own, occupy it without your permission, use it exclusively, and pay all state, county, and municipal property taxes on it for the full five years.9California Legislative Information. California Code of Civil Procedure 325 – Adverse Possession Requirements
Where the claim does not rest on a written instrument like a deed or court judgment, the land must also have been protected by a substantial enclosure or visibly cultivated and improved for the whole period.9California Legislative Information. California Code of Civil Procedure 325 – Adverse Possession Requirements The tax requirement is the main safeguard. The occupant has to produce certified tax collector records showing five years of timely payments, which most casual squatters never come close to meeting. Monitoring your property, removing unauthorized occupants promptly, and keeping your own tax payments current defeats these claims before they can take hold.