Does Colorado have a stand-your-ground law?
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Colorado has never enacted a standalone "stand your ground" statute. Self-defense is instead governed by the general use-of-force statute (C.R.S. § 18-1-704) and, for an occupied home, the "make-my-day" law (C.R.S. § 18-1-704.5). Colorado courts have long held that a person who is not the initial aggressor has no duty to retreat before using force — but that "no duty to retreat" rule comes from case law, not a statute. Whether a specific use of force was justified is a fact-intensive question, so consult a Colorado attorney about any real situation.
There is no "stand your ground" statute
Colorado has no statute by that name. When people ask whether Colorado is a "stand your ground" state, the answer lies in two self-defense statutes plus a line of court decisions, which together produce a similar practical result without using that label.
The general self-defense statute — § 18-1-704
Section 18-1-704 sets out when a person is justified in using force to defend themselves or a third person, and the narrower conditions for using deadly force.
Except as provided in subsections (2) and (3) of this section, a person is justified in using physical force upon another person in order to defend himself or a third person from what he reasonably believes to be the use or imminent use of unlawful physical force by that other person, and he may use a degree of force which he reasonably believes to be necessary for that purpose.
Deadly physical force may be used only if a person reasonably believes a lesser degree of force is inadequate and: (a) The actor has reasonable ground to believe, and does believe, that he or another person is in imminent danger of being killed or of receiving great bodily injury; or (b) The other person is using or reasonably appears about to use physical force against an occupant of a dwelling or business establishment while committing or attempting to commit burglary...; or (c) The other person is committing or reasonably appears about to commit kidnapping..., robbery..., sexual assault..., or assault...
The justification has limits. A person is not justified in using force if they provoked the confrontation intending to cause injury, or if they were the initial aggressor — unless they withdraw and communicate that intent.
Notwithstanding the provisions of subsection (1) of this section, a person is not justified in using physical force if: (a) With intent to cause bodily injury or death to another person, he provokes the use of unlawful physical force by that other person; or (b) He or she is the initial aggressor; except that his or her use of physical force upon another person under the circumstances is justifiable if he or she withdraws from the encounter and effectively communicates to the other person his or her intent to do so, but the latter nevertheless continues or threatens the use of unlawful physical force...
The "make-my-day" law — § 18-1-704.5
Colorado's best-known self-defense provision applies specifically inside an occupied dwelling. It grants an occupant broad justification to use force — including deadly force — against someone who has made an unlawful entry, and provides immunity from both criminal prosecution and civil liability when its conditions are met.
(1) The general assembly hereby recognizes that the citizens of Colorado have a right to expect absolute safety within their own homes. (2) Notwithstanding the provisions of section 18-1-704, any occupant of a dwelling is justified in using any degree of physical force, including deadly physical force, against another person when that other person has made an unlawful entry into the dwelling, and when the occupant has a reasonable belief that such other person has committed a crime in the dwelling in addition to the uninvited entry, or is committing or intends to commit a crime against a person or property in addition to the uninvited entry, and when the occupant reasonably believes that such other person might use any physical force, no matter how slight, against any occupant. (3) Any occupant of a dwelling using physical force, including deadly physical force, in accordance with the provisions of subsection (2) of this section shall be immune from criminal prosecution for the use of such force. (4) Any occupant of a dwelling using physical force, including deadly physical force, in accordance with the provisions of subsection (2) of this section shall be immune from any civil liability for injuries or death resulting from the use of such force.
Note that the "make-my-day" immunity is tied to its statutory conditions — an unlawful entry into a dwelling, plus the occupant's reasonable beliefs described in subsection (2). It is narrower than a general "stand your ground" rule and does not extend to businesses or public places.
"No duty to retreat" comes from case law, not statute
Colorado's "no duty to retreat" rule is a product of case law, not any statute. Colorado courts have long held that a person who is not the initial aggressor need not retreat before using force otherwise justified under § 18-1-704 — only an "initial aggressor" carries the retreat-or-withdraw obligation reflected in § 18-1-704(3)(b). This principle is most often cited to People v. Toler, 9 P.3d 341 (Colo. 2000). Sourcing caveat: the citation and holding are corroborated across secondary case-law summaries, but we have not re-verified the opinion text against the Colorado judicial branch's own opinion archive, so treat this as case-law/secondary-grade information rather than statute-grade.
The bottom line
Colorado reaches a "stand your ground"-like result through the combination of the § 18-1-704 use-of-force statute, the § 18-1-704.5 "make-my-day" home-defense law, and the case-law rule that a non-aggressor has no duty to retreat — but there is no statute carrying the "stand your ground" name.
This page describes what the statutes and cited case law say; it is not legal advice and it is not tactical guidance. Whether any particular use of force is justified depends heavily on the specific facts. If you are involved in or facing questions about a self-defense incident, consult a Colorado attorney.
Common questions
Is Colorado a stand-your-ground state?
Colorado has no statute called "stand your ground," but it functions similarly in practice: the use-of-force statute (§ 18-1-704), the "make-my-day" home-defense law (§ 18-1-704.5), and case law holding that a non-aggressor has no duty to retreat combine to reach a comparable result.
What is Colorado’s make-my-day law?
The "make-my-day" law (C.R.S. § 18-1-704.5) justifies an occupant of a dwelling in using any degree of force, including deadly force, against someone who has made an unlawful entry, under the conditions in subsection (2), and grants immunity from criminal prosecution and civil liability when those conditions are met.
Do you have a duty to retreat in Colorado?
Under Colorado case law, a person who is not the initial aggressor generally has no duty to retreat before using otherwise-justified force under § 18-1-704. This rule comes from court decisions such as People v. Toler, 9 P.3d 341 (Colo. 2000), not from a statute.
Does make-my-day apply outside the home in Colorado?
No. The "make-my-day" immunity in § 18-1-704.5 applies to an occupant of a dwelling against a person who has made an unlawful entry; it does not extend to businesses or public places. General self-defense outside the home is governed by § 18-1-704.