In California, you generally cannot shoot a trespasser on your property. Deadly force is lawful only when you reasonably believe you or someone else is facing an imminent threat of death or serious physical injury. Trespassing by itself — someone crossing your yard, standing on your driveway, or refusing to leave — does not meet that standard, and using a firearm against a person who poses no real physical danger can lead to murder, manslaughter, or assault charges.
Trespassing Alone Is Not Enough
Trespass is a misdemeanor in California.1California Legislative Information. California Code PEN 602 – Trespassing You can ask a trespasser to leave. If they refuse, you can use reasonable physical force to remove them. Reasonable force in that situation means the minimum needed to get them off the property, not a weapon.
The force you can legally use has to match the threat you face. A person who is not armed, not acting aggressively, and not trying to break into your home is not someone you can lawfully shoot. If a prosecutor later reviews the incident and concludes your response was far beyond what the trespasser’s conduct warranted, the charges can be severe. Proportionality is the whole framework, and it starts from zero when there is no physical threat.
When Deadly Force Is Legally Justified
Penal Code 197 identifies the situations where a homicide is considered justifiable: resisting an attempt to murder someone, preventing a felony, or defending yourself or family members when there is reasonable ground to believe a felony or serious injury is about to happen and the danger is imminent.2California Legislative Information. California Code PEN 197 – Justifiable Homicide The word “imminent” carries a lot of weight. A burglar climbing through your window is imminent. Someone running away with your television is not.
The legal test asks whether a reasonable person in your exact position would have believed they faced immediate death or serious physical injury. You have to actually hold that belief, and the belief has to be one a reasonable person would share given the same circumstances.3Justia. CALCRIM No. 505 Justifiable Homicide – Self-Defense or Defense of Another Courts look at the whole picture: whether the intruder was armed, whether they made threats, whether they forced entry at night, whether they moved toward you aggressively. Factors that undercut the claim include a trespasser who is retreating, unarmed, disoriented, or already leaving.
The Castle Doctrine and Its Limits
California’s Castle Doctrine, in Penal Code 198.5, gives you a legal presumption when someone unlawfully and forcibly enters your residence while you are inside. The law presumes you held a reasonable fear of imminent death or serious physical injury.4California Legislative Information. California Code PEN 198.5 – Homicide That presumption shifts the burden: the prosecution has to prove your fear was not reasonable, rather than you having to prove it was.
Three requirements all have to be met:
- You are inside your residence. The statute protects you within the physical structure of the home. A detached garage, front yard, or unenclosed porch likely falls outside that definition.
- The entry is unlawful. The person has no legal right to be there and is not a member of your household.
- The entry is forcible. The intruder has to have broken in through some act of force, like kicking a door, breaking a window, or prying open a lock. Someone who wanders in through an unlocked, open door has entered unlawfully but arguably not forcibly, which weakens the presumption.
Even when the presumption applies, it is not a blanket license. If evidence shows you knew the intruder posed no real danger, such as a confused elderly neighbor who stumbled into the wrong house, a prosecutor can still challenge it.
No Duty to Retreat
California does not require you to retreat before defending yourself, whether you are in your home or anywhere else you have a right to be. The standard jury instruction, CALCRIM 505, tells jurors that a defendant “is not required to retreat” and “is entitled to stand his or her ground” as long as the use of force was reasonably necessary.3Justia. CALCRIM No. 505 Justifiable Homicide – Self-Defense or Defense of Another This applies even if you could have safely walked away.
The catch is that everything still hinges on whether your belief that deadly force was necessary was reasonable. Standing your ground against an armed intruder who broke into your bedroom at 2 a.m. is a very different case from standing your ground against a teenager cutting through your backyard. Not having to retreat does not change what force is proportional to the threat.
Protecting Property Is Not the Same as Protecting a Person
This is where the law surprises people. California does not allow deadly force to protect property by itself. You cannot shoot someone who is stealing your car, grabbing packages off your porch, or breaking into your shed, unless their actions also put you or someone else in immediate danger of death or serious injury.2California Legislative Information. California Code PEN 197 – Justifiable Homicide
You can use reasonable non-deadly force to stop a theft. If the thief then turns on you, pulls a weapon, or physically attacks you, the situation shifts from a property crime to a threat against your life, and the self-defense analysis applies. But the shift has to come from the thief’s escalation. Chasing a fleeing burglar out of your house and shooting them in the back is not self-defense. Once they are running away, the threat has ended.
Warning Shots and Pointing a Gun
A warning shot may feel like a measured response. California law does not treat it that way. Discharging a firearm in a grossly negligent manner is a crime under Penal Code 246.3, regardless of your intention.5California Legislative Information. California Code PEN 246.3 – Willful Discharge of Firearm in Grossly Negligent Manner A round fired into the air or ground can ricochet, strike a neighbor, or penetrate a wall.
Simply pointing a firearm at a trespasser who does not pose an imminent threat can also lead to charges. Assault with a firearm carries a potential sentence of two to four years in state prison.6California Legislative Information. California Code PEN 245 – Assault With Deadly Weapon The reasoning is direct: if the threat against you was not serious enough to justify shooting, drawing the gun was already disproportionate.
What Happens If the Shooting Is Not Justified
If prosecutors decide the use of deadly force was not justified, the charges can be serious. First-degree murder carries 25 years to life in state prison. Second-degree murder carries 15 years to life.7California Legislative Information. California Code PEN 190 – Punishment for Murder If the killing was unlawful but occurred in the heat of the moment without premeditation, the charge may be voluntary manslaughter, which still carries years in state prison. If the person survives, charges can include attempted murder or assault with a firearm.
Even negligent discharge under Penal Code 246.3 is a wobbler, meaning prosecutors can file it as either a misdemeanor or a felony. As a felony, the sentence can reach three years in county jail under California’s realignment.8California Legislative Information. California Code PEN 1170 – Sentencing
The firearms consequences pile on top. Any felony conviction triggers a lifetime ban on owning or possessing firearms in California.9California Legislative Information. California Code PEN 29800 – Felon With Firearm Even a misdemeanor conviction for negligent discharge results in a 10-year prohibition on firearm ownership.10California Legislative Information. California Code PEN 29805 – Persons Prohibited From Possessing Firearms
A criminal acquittal does not close the door on liability. The injured person, or the surviving family in a fatal shooting, can file a wrongful death or personal injury claim in civil court. Civil cases use a lower standard of proof than criminal cases. A criminal jury has to find guilt beyond a reasonable doubt; a civil jury only has to find that your actions more likely than not caused the harm. People have been acquitted of criminal charges and then found liable for millions in civil damages from the same incident. Homeowners insurance almost always excludes coverage for intentional acts, so a civil judgment typically comes out of personal assets.