What should I do? Landowners are responsible for maintaining the trees on their property. Legally, they have two duties: make reasonable inspections and take care to ensure the tree is safe. If your neighbor doesn't remove the dangerous tree, and the tree does in fact cause damage, your neighbor can be held liable.

Whose responsibility is it to maintain a tree?

Who Is Responsible for Maintaining the Tree? If a tree trunk is on your property, you are responsible for maintaining it. You are responsible for making sure any tree on your property is healthy and there are no known hazards.

Who owns a tree on the property line?

Ownership. A tree near a property line belongs to the neighbor who owns the ground where it's growing. This is true even if the other neighbor planted the tree, so it's a good idea to have the property surveyed to determine the exact boundary line before planting border trees.