Queensland Consolidated Acts Queensland Consolidated ActsWhen a person is in peaceable possession of any land, structure, or vessel, with a claim of right, it is lawful for the person, and for any person lawfully assisting him or her or acting by his or her authority, to use such force as is reasonably necessary in order to defend the person’s possession, even against a person who is entitled by law to the possession of the property, provided that he or she does not do grievous bodily harm to such person.