Necessity, Proportionality, and the Limits of Harm in the Defense of Private Property

The essay examines if injury can be lawfully permitted in the defence of private property. It argues that under the common law traditions, property rights enjoy strong legal protection, however the use of force in their defence is never absolute. The legitimacy of inflicting injury depends on the principles of necessity and proportionality.

Through an analysis of statutory rules and case law, the essay demonstrates that harm may be justified only where an unlawful interference presents an immediate and unavoidable threat, and where no less harmful alternative is available. At the same time, the law imposes strict limits to prevent defensive force from becoming excessive or retaliatory. The essay concludes that property defence operates as a narrowly constrained exception to the state’s monopoly on force.