Necessity (tort) - Private Necessity

Private necessity is the use of another's property for private reasons. Well established doctrines in common law prevent a property owner from using force against an individual in a situation where the privilege of necessity would apply. While an individual may have a private necessity to use the land or property of another, that individual must compensate the owner for any damages caused. For example:

A strong wind blows a parachuting skydiver off course from his intended landing zone. He must land in a nearby farmer's field. The skydiver tramples on the farmer's prized roses, and the farmer hits the skydiver on the head with a pitchfork. The skydiver can invoke the privilege of private necessity for trespassing in the farmer's fields but will have to pay for the damage caused to the roses. The farmer will be liable for battery because the use of force in defense of property is not privileged against an individual who successfully claims private necessity.

In American law, the case most often cited to explain the privilege of private necessity is Vincent v. Lake Erie Transp. Co., 109 Minn. 456, 124 N.W. 221 (1910).