Entering another person’s property without permission of the owner or his/her agent and without lawful authority (like that given to a health inspector) and causing any damage, no matter how slight. any interference with the owner’s (or a legal tenant’s) use of the property is a sufficient showing of damage and is a civil wrong (tort) sufficient to form the basis for a lawsuit against the trespasser by the owner or a tenant using the property. trespass includes erecting a fence on another’s property or a roof which overhangs a neighbor’s property, swinging the boom of a crane with loads of building materials over another’s property, or dumping debris on another’s real estate. in addition to damages, a court may grant an injunction prohibiting any further continuing, repeated or permanent trespass. trespass for an illegal purpose is a crime.