Yes, homeowners insurance protects you under personal liability coverage if someone is injured on your property while using your trampoline or treehouse. However, there is a limit to this coverage: typically about $100,000. If you have a trampoline or treehouse and there is no exclusion in your homeowners insurance policy, you may be required to increase personal liability coverage amounts. If a tree falls on your trampoline, treehouse, or swing set, it will likely be covered. Damage from wear and tear or lack of maintenance is usually not covered.