Can You Shoot a Trespasser in Colorado? Make My Day Law

You can shoot a trespasser in Colorado only in narrow circumstances, and where the encounter happens matters more than almost anything else. Inside your home, the “Make My Day” law gives you broad authority to use deadly force against an unlawful intruder. Step outside — into your yard, your driveway, your porch — and the rules change completely. Out there, deadly force is justified only when you reasonably believe you or someone else is about to be killed or seriously injured. The fact that someone is trespassing, by itself, is never enough.

Inside Your Home: The Make My Day Law

Colorado’s strongest protection for occupants comes from C.R.S. 18-1-704.5, known as the Make My Day law. The statute opens by declaring that Colorado citizens “have a right to expect absolute safety within their own homes.”¹

Under the law, an occupant can use any degree of force, including deadly force, against another person when three conditions are all met:

The other person made an uninvited, unlawful entry into the dwelling.
The occupant reasonably believes that person has committed, is committing, or intends to commit a crime inside the dwelling beyond the entry itself.
The occupant reasonably believes the intruder might use physical force, “no matter how slight,” against anyone inside.

That third element is what makes this statute so protective. You do not have to believe the intruder is about to kill you or cause serious injury. A reasonable belief that any physical contact might occur is enough. When all three conditions are satisfied, the occupant receives immunity from both criminal prosecution and civil liability.¹

What Counts as Your Dwelling

The protection applies only inside a “dwelling,” and that word is read strictly. Your yard, driveway, detached garage, porch, and any outdoor area on your property fall outside the statute. An encounter on your front lawn is legally very different from one in your living room, even on land you own.

Colorado courts have also held that the common areas of an apartment building, like hallways and lobbies, are not a dwelling under this law, though a shared basement that tenants use to manage utilities for their individual apartments has qualified. The question is whether the space functions as part of someone’s personal living quarters. If a trespasser has not entered the structure where you live, Make My Day does not apply, and the general self-defense rules take over.

Outside the Home: General Self-Defense

Anywhere other than inside your dwelling, C.R.S. 18-1-704 governs. You can use physical force to defend yourself or someone else from what you reasonably believe is the imminent use of unlawful physical force, and the force you use must be proportional to the threat.²

Deadly force is permitted only when you reasonably believe lesser force is not enough and at least one of these situations exists:

You or another person face imminent danger of being killed or suffering great bodily injury.
Someone is using or about to use force against an occupant of a dwelling or business while committing burglary.
Someone is committing or about to commit kidnapping, robbery, or sexual assault.

Those are the only circumstances. Colorado has no stand-your-ground statute, but the state Supreme Court has held through case law that you have no duty to retreat before using force when you are in a place you have a right to be. That does not loosen the proportionality rule. You still need an imminent threat that justifies the level of force you use.

Protecting Property Is Not Enough

C.R.S. 18-1-706 separately addresses defense of property. You can use reasonable, non-deadly force to stop someone from stealing, damaging, or tampering with your things. But deadly force to protect property is permitted only when the situation also qualifies as self-defense under 18-1-704.³

You cannot shoot someone for stealing a lawnmower, breaking into a car in the driveway, or vandalizing a fence. You can intervene physically with reasonable force. The moment you escalate to a firearm over property alone, you have lost your legal justification.

What You Can Do About a Simple Trespasser

Being on your land without permission is a crime. First-degree criminal trespass into an occupied dwelling is a class 6 felony, and entering an unoccupied dwelling or a motor vehicle is a class 1 misdemeanor.⁴ That does not translate into a right to use deadly force.

If a trespasser is in your yard and no one is being threatened, you can ask the person to leave, call law enforcement, and use reasonable non-deadly force to remove them if they refuse. Grabbing someone’s arm and walking them off the property is a very different act, legally, from pointing a gun at them. Someone walking across your field, sitting on your porch, or refusing to leave is not creating the kind of threat that justifies lethal force.²

When a Self-Defense Claim Fails

Even a real threat does not guarantee a self-defense claim. Under C.R.S. 18-1-704(3), you lose the defense if:

You provoked the confrontation with the intent to cause bodily injury or death. The one exception is if you clearly withdraw and communicate that you are backing off, and the other person keeps attacking.
You agreed to fight, outside of combat specifically authorized by law.
Your response was based on discovering or learning about a person’s gender identity, gender expression, or sexual orientation. Colorado law expressly bars self-defense claims on that basis.

These rules matter in trespasser scenarios more than people expect. If you go outside to confront someone, escalate the exchange with threats, and the trespasser responds with force, your self-defense claim gets much harder. Who started it, and who escalated, carries enormous weight.²

What’s at Stake If You Get It Wrong

If a shooting falls outside the legal justifications, the exposure is severe. Prosecutors can charge felony assault, manslaughter, or second-degree murder depending on the circumstances and your state of mind. Second-degree murder is a class 2 felony and, because a deadly weapon was used, is sentenced as a crime of violence, with a presumptive range of 16 to 48 years.⁵ Manslaughter, which covers recklessly causing another person’s death, is a class 4 felony carrying 2 to 6 years and might apply where a warning shot kills someone or a lethal response is a reckless overreaction to a non-lethal threat.⁶

The civil side runs separately. The injured person or their surviving family can sue you regardless of whether the state files criminal charges and regardless of how any charges resolve, and civil cases use a lower standard of proof. A Colorado wrongful death action can seek medical expenses, lost income, pain and suffering, and funeral costs. Noneconomic damages are capped at $2,125,000, but that cap does not apply where the death resulted from a felonious killing. Juries can also award exemplary damages, up to the amount of actual damages, where the conduct involved fraud, malice, or willful and wanton behavior.⁷ Make My Day’s civil immunity reaches only shootings inside the dwelling that meet all three statutory conditions. Nothing on the porch, in the yard, or in a detached structure is covered.

After a Shooting

Even a clearly justified shooting is treated as a potential homicide investigation. Call 911 right away and ask for both medical help and law enforcement. When officers arrive, identify yourself and follow basic instructions. Be careful about giving a detailed statement before you have spoken with an attorney.

Fifth Amendment protection is narrower than most people assume. Under Salinas v. Texas (2013), simply going quiet during police questioning may not be enough to trigger it. If you do not want to answer questions, say so clearly: state that you are invoking your right to counsel and your Fifth Amendment privilege. Having a lawyer before you give your account is not a sign of guilt. It is the single most important step for making sure the facts come out accurately and your rights stay intact.