When a tree falls over onto a neighbor's property, that neighbor should submit a claim to his or her insurance company immediately. The insurance company is usually responsible for taking care of the damages. This is true if the tree fell over due to an act of nature. For example, a healthy tree that falls over during a tornado, hurricane, wind storm or winter storm would not be the responsibility of the homeowner. Since the homeowner living on the property where the fallen tree was rooted did not intentionally push the tree over, nature is responsible. This means that the neighbor's insurance policy should cover it under perils.
However, there are some cases where a homeowner could be held liable. If the tree fell on the neighbor's home when the homeowner was trying to cut down the tree without professional help, the damage would be the homeowner's responsibility. Also, if the tree was dying, unstable or diseased and the homeowner knew about it, he or she could be liable if it falls over on its own. He or she could also be liable if it falls over during a very light storm that would not normally knock over a tree. When homeowners know they have dying, diseased or unstable trees, it is their responsibility to take steps to prevent them from causing severe damage.