New Hampshire Self-Defense Laws: Stand Your Ground & Castle Doctrine (2026)

New Hampshire is a stand-your-ground state. RSA 627:4(III) is a limitation on deadly force only, and it does not reach a person who is not the initial aggressor and is in their dwelling, its curtilage, or anywhere they have a right to be. Nothing in the statute requires retreat before using non-deadly force.

Information last verified on June 1, 2026.

Jurisdiction scope: This article covers New Hampshire state law only, specifically RSA Chapter 627. It does not address federal law or the law of other states. For a 50-state overview, see self-defense laws by state.

Is New Hampshire a Stand-Your-Ground State?

Yes. New Hampshire is a stand-your-ground state by statute, though RSA 627:4(III) reaches that result through a limitation rather than a grant. The subsection provides that a person is not justified in using deadly force if they know they can retreat with complete safety, and it then exempts a person who is in their dwelling, its curtilage, or anywhere they have a legal right to be and was not the initial aggressor. Because the retreat rule governs deadly force only, and no provision imposes a retreat requirement for non-deadly force, the practical outcome is no duty to retreat in any lawful location.

This no-retreat rule is not limited to the home. A person who is lawfully present in a park, on a sidewalk, in a parking lot, or at a friend's house has no legal obligation to attempt to flee before using defensive force, provided they did not start the fight. The statute's reach to "anywhere he or she has a right to be" makes New Hampshire one of the broader stand-your-ground states in New England.

New Hampshire's stand-your-ground protection was broadened in 2011 when the legislature amended RSA 627:4(III). Before that amendment, RSA 627:4(III) already codified a statutory duty to retreat, requiring a person to retreat with complete safety before using deadly force in public unless they were in their dwelling or its curtilage and were not the initial aggressor. The 2011 amendment removed the duty to retreat everywhere the person has a legal right to be, not just the home.

The stand-your-ground protection is part of New Hampshire's broader justification framework, which is set out in RSA Chapter 627. RSA 627:1 provides that conduct which is justifiable under the chapter constitutes a complete defense to any criminal charge and to any civil action based on that conduct.

Castle Doctrine and Defense of the Home

New Hampshire's castle doctrine operates through RSA 627:4, which governs physical force in defense of a person, and RSA 627:7, which governs use of force in defense of premises. Together, they define when a person defending their home may use non-deadly force and when deadly force is permitted.

RSA 627:4: Deadly Force in the Dwelling

RSA 627:4(III) gives a person in their dwelling or its curtilage the same exemption from the deadly-force retreat rule that they have anywhere else they have a legal right to be. Because that exemption applies to the home, a person defending their residence is under no obligation to retreat to another room or to flee out a back door before responding with deadly force.

The definition of "dwelling" under RSA 627:9 is broad. It includes any building, structure, vehicle, boat, or other place adapted for overnight accommodation of persons. A camper van, a houseboat, or a temporary shelter used for overnight occupancy can qualify as a dwelling under this definition.

"Curtilage" under RSA 627:9 means outbuildings that are proximately, directly, and intimately connected with a dwelling, together with all the land or grounds surrounding the dwelling. A detached garage that is closely associated with the home, a fenced yard, or a driveway that abuts the house falls within the curtilage.

New Hampshire does not have a statutory presumption of reasonable fear tied to a home entry. Unlike states such as Florida or Michigan, which presume that a person inside their home who faces an intruder had a reasonable fear of death or serious injury, New Hampshire gives a home defender no such starting advantage. Whether the belief in the necessity of deadly force was reasonable is decided on the evidence, with no automatic presumption in the defender's favor simply because the confrontation occurred inside the home. That is a question of proof, not a shift in the burden: under RSA 626:7(I)(a) the State still has to disprove justification beyond a reasonable doubt.

RSA 627:7: Non-Deadly Force and the Premises

RSA 627:7 provides a separate basis for using force against criminal trespassers. A person who is lawfully in control of premises may use non-deadly force when and to the extent reasonably believed necessary to prevent or terminate a criminal trespass. If a trespasser enters without permission and refuses to leave, the person in control of the premises may use reasonable non-deadly force to remove them or stop the trespass.

Deadly force under RSA 627:7 is permitted in only two situations: when justified under RSA 627:4 (meaning the trespasser also poses a personal threat meeting the deadly-force standard), or when the person reasonably believes deadly force is necessary to prevent an attempt by the trespasser to commit arson. Arson of an occupied structure poses a direct threat to the lives of occupants, which is why the statute carves it out as a separate basis for deadly force.

Property defense alone does not justify deadly force under New Hampshire law. RSA 627:8 permits force to prevent an unlawful taking of property or criminal mischief, but it expressly provides that deadly force is authorized only as prescribed in RSA 627:4. A person may not shoot a shoplifter or a car thief solely to protect their property.

When Deadly Force Is Justified

Deadly force in New Hampshire self-defense is governed by RSA 627:4(II), which sets out the circumstances under which a person may use force likely to cause death or serious bodily injury.

A person is justified in using deadly force when they reasonably believe that another person:

• Is about to use unlawful deadly force against the actor or a third person
• Is likely to use any unlawful force against a person present while committing or attempting to commit a burglary. The statute sets no location limit here, so this ground is not confined to a burglary of the actor's own dwelling, and the person at risk need not be the actor
• Is committing or about to commit kidnapping or a forcible sex offense
• Is likely to use any unlawful force in the commission of a felony against the actor within the actor's dwelling or its curtilage. The felony ground is the one tied to the home, and it requires both a felony against the actor and the likely use of unlawful force, not merely a felony occurring on the property

The common thread is that the threat must be immediate and the danger serious. RSA 627:4(II) also includes RSA 627:4(II-a), which provides that displaying a firearm to warn off a person who is likely to cause serious bodily injury or death does not itself constitute criminal conduct, even if no shot is fired. This defensive-display provision protects a person who draws a weapon to deter an attacker without actually shooting.

The standard throughout RSA 627:4 is one of reasonable belief. The person using force must subjectively believe that deadly force is necessary, and that belief must be objectively reasonable under the circumstances as they appeared to a person in the defender's position. A purely subjective fear that is not supported by the facts will not satisfy the statute.

Defense of Third Persons

RSA 627:4 extends the right to use force to the defense of third persons in both of its operative subsections. Under RSA 627:4(I), a person is justified in using non-deadly force to defend a third person from what the actor reasonably believes to be the imminent use of unlawful, non-deadly force by the other person, using the degree of force the actor reasonably believes necessary. The statute keys on the actor's own reasonable belief. It does not ask, as the Model Penal Code formulation does, whether the person being protected would themselves have been justified.

Deadly force in defense of another comes from RSA 627:4(II). Subsection (a) covers a person about to use unlawful deadly force against the actor or a third person, and subsection (c) covers a person committing or about to commit kidnapping or a forcible sex offense, with no limitation on who the victim is. The same provocation, initial-aggressor, and combat-by-agreement exceptions in RSA 627:4(I) apply when the force used is non-deadly.

How Self-Defense Is Raised in New Hampshire

In New Hampshire, self-defense is a defense rather than an affirmative defense, and that label decides who carries the burden. RSA 626:7(I) draws the line: for a defense, "the state must disprove such defense beyond a reasonable doubt," while for an affirmative defense "the defendant has the burden of establishing such defense by a preponderance of the evidence." RSA 627:1 places justification in the first category, providing that justifiable conduct constitutes a defense to any offense. So the defendant has only a burden of producing some evidence of justification. Once that is met, the prosecution must disprove the justification claim beyond a reasonable doubt.

A defendant who wishes to raise self-defense typically presents evidence of the circumstances leading up to the use of force, including witness testimony, physical evidence, and any communications that show the defendant was not the initial aggressor. Once justification is properly in the case, it is the State that must disprove beyond a reasonable doubt that the defendant reasonably believed the threat was imminent and that the level of force used was proportionate.

RSA 627:1 establishes the general rule that justification under Chapter 627 is a complete defense. If the jury finds that the defendant's use of force was justified, the defendant is acquitted. The justification is not a partial defense that reduces a charge; it is a complete defense to the criminal charge.

Civil immunity under RSA 627:1-a follows from a finding of justified force. Under RSA 627:1-a, a person who uses force that is justified under Chapter 627 in self-protection, protection of others, defense of property, or law enforcement is immune from civil liability for personal injuries sustained by the person against whom the force was used. If the injured party brings a civil suit, the court must award the defendant reasonable attorney fees, expert witness fees, court costs, and compensation for loss of income.

When Self-Defense Fails

RSA 627:4 sets out several circumstances in which the justification defense is unavailable or limited, and New Hampshire courts have developed a consistent body of case law on when a self-defense claim will not succeed.

Initial Aggressor

The most significant limitation is the initial-aggressor rule. RSA 627:4(III) expressly provides that the no-duty-to-retreat protection does not apply to a person who is the initial aggressor in the confrontation. A person who throws the first punch, draws a weapon without provocation, or otherwise starts the fight cannot invoke the stand-your-ground rule.

New Hampshire courts recognize that a person who was the initial aggressor can regain the right of self-defense if they genuinely withdraw from the confrontation and communicate that withdrawal to the other person, and the other person nevertheless continues to pursue or threaten violence. The withdrawal must be actual and unambiguous.

Safe Retreat Through Provocation

A person who provokes a confrontation with the intent of then using force in purported self-defense cannot claim justification. The law does not permit someone to engineer a situation to give themselves an excuse to use force. Courts look at whether the provocation was genuine or calculated.

Excessive Force

Deadly force is only authorized under RSA 627:4(II) when the defender reasonably believes the threat rises to the level of death, serious bodily injury, kidnapping, or a forcible sex offense. Using deadly force in response to a non-deadly threat is not justified. A person who shoots someone over a minor push or a verbal argument that does not involve a credible physical threat will not satisfy the reasonable-belief standard.

Disproportionate Response to Property Crimes

As noted above, RSA 627:8 prohibits using deadly force solely to protect property. A person who sees someone stealing their car and shoots the thief, with no personal threat to themselves or another person, cannot claim justification under Chapter 627. The only route to deadly force for property protection is if the thief also presents a threat that meets the deadly-force standard under RSA 627:4.

Legal disclaimer: This article provides general legal information about New Hampshire self-defense law. It is not legal advice and does not create an attorney-client relationship. Use-of-force situations carry serious criminal and civil consequences that depend on the specific facts. Laws may change. Anyone facing a self-defense claim, a criminal charge involving use of force, or a related civil matter should consult a licensed New Hampshire criminal-defense attorney. Statutes verified at gc.nh.gov as of June 1, 2026.

Last updated: June 1, 2026. New Hampshire statutes verified at gc.nh.gov as of June 1, 2026.

For self-defense laws in other states, see self-defense laws by state.

For related New Hampshire property law, see New Hampshire squatters rights and adverse possession.

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