720 ILCS 5/7-3:
Defense of Other Property

Section 7-3 of the Illinois Criminal Code addresses the use of force in defense of property other than a dwelling. While Sections 7-1 and 7-2 cover defense of person and defense of dwelling respectively, Section 7-3 establishes a more limited authorization for force used to protect real property (land) and personal property (possessions) from trespass or criminal interference.^[1]

General Rule: Force to Protect Property

Under 720 ILCS 5/7-3, a person is justified in the use of force against another when and to the extent that the person reasonably believes such conduct is necessary to prevent or terminate trespass on or other tortious or criminal interference with either real property (other than a dwelling) or personal property. The property must be lawfully in the person's possession, in the possession of a member of the person's immediate family or household, or in the possession of a person whose property they have a legal duty to protect.^[1]

Examples of situations where Section 7-3 may authorize the use of force include:

• Removing a trespasser from private land (other than a dwelling)
• Preventing the theft or destruction of personal property such as a vehicle, tools, or livestock
• Stopping vandalism or other criminal damage to property

Deadly Force Is Generally Not Justified

Deadly force in defense of property is narrowly limited, but Section 7-3 contains its own deadly-force prong. Under 720 ILCS 5/7-3(a), force likely to cause death or great bodily harm is justified only when the person reasonably believes it is necessary to prevent the commission of a forcible felony. Ordinary theft, trespass, or vandalism does not meet that standard. A person may not shoot someone merely to prevent the theft of a car, stop a simple trespasser on their land, or protect personal possessions from being taken or damaged unless the person reasonably believes deadly force is necessary to prevent a forcible felony.^[1]

If a property defense situation also involves imminent use of unlawful force against a person, Section 7-1 can apply when the person reasonably believes defensive force is necessary. Deadly force under that section requires a reasonable belief that it is necessary to prevent imminent death or great bodily harm to the person or another, or the commission of a forcible felony. Section 7-3 itself also authorizes deadly force in one circumstance, the prevention of a forcible felony, so the two provisions overlap when a property crime rises to that level.

Who May Defend Property

Section 7-3 authorizes force to defend property in three categories of relationships:

• Personal possession: The person using force is the lawful possessor of the property being threatened
• Family member's property: The property is lawfully in the possession of a member of the person's immediate family or household
• Legal duty to protect: The person has a legal duty to protect the property. An employee protecting an employer's inventory, a security guard protecting a business, or a caretaker protecting entrusted property qualifies under this category only if they have a legal duty to protect that property

Proportionality Requirement

Section 7-3 justifies force only when and to the extent that the person reasonably believes such conduct is necessary to prevent or terminate trespass on or other tortious or criminal interference with the property. Force intended or likely to cause death or great bodily harm is justified only if the person reasonably believes that such force is necessary to prevent the commission of a forcible felony.^[1]

Interaction with Other Statutes

Section 7-3 does not exist in isolation. Section 7-2 applies to force reasonably believed necessary to prevent or terminate unlawful entry into or attack upon a dwelling. Force intended or likely to cause death or great bodily harm is justified under that section only if the entry is made or attempted in a violent, riotous, or tumultuous manner and the person reasonably believes such force is necessary to prevent an assault upon, or offer of personal violence to, the person or another then in the dwelling, or if the person reasonably believes such force is necessary to prevent the commission of a felony in the dwelling. Section 7-1 can also apply when the person reasonably believes force is necessary to defend against another's imminent use of unlawful force.^[2]