What, exactly, is a trespasser? Well, the simple definition of a trespasser is someone who is not authorized to be on the property. Landowners are not obligated to protect trespassers who enter their property without permission, but they cannot willfully injure them. Also, if a landowner knows that there are frequent trespassers on his/her property, he or she will be liable for any injuries caused by an unsafe condition on the property if:
1) the condition is one the owner created or maintained;
2) the condition was likely to cause death or serious bodily harm;
3) the condition was such that the owner had reason to believe trespassers would not discover it; or,
4) the owner failed to exercise reasonable care to warn trespassers of the condition and the risk presented.
Many homeowners have wondered whether or not a trespasser sue a property owner if the trespasser becomes injured while on the property. As a general rule, property owners are not liable should a trespasser become injured on his or her property. Of course, with anything, there are exceptions. More often than not, a judge will not rule in the trespassers favor. This is because property owners simply cannot expect that a trespasser will come onto their property; thus, the property owners should not be responsible for warning any safety issues to unidentified persons in or on their property.
Sometimes there are exceptions. For example, if people are continually trespassing on a property, the owner by now realizes that this is a reoccurring thing. In which case, if there are safety hazards that the owner is aware of, they should be notifying trespassers with a warning sign stating the hazard, such as: “warning: electric fence.”
However, there are always exceptions to this rule. For example, property owners may usually use deadly force to protect themselves or other people. So, for example, if an armed burglar breaks into a home in the middle of the night, a resident of the home may be entitled to shoot the burglar if the resident feels that his or her life is threatened.
A different rule applies where trespassing children are involved. In the case of children who wander onto property without authorization, property owners do have a duty to ensure that their property is safe. The logic behind this exception is that children are sometimes naive to dangers on property, and could in fact be lured to dangerous conditions such as a swimming pool, an abandoned well, or heavy machinery.