Two separate bodies of law meet over private property. The FAA regulates the navigable airspace and the operation of aircraft in it, and nothing in Part 107 requires landowner permission to overfly a parcel. But privacy, trespass, harassment and nuisance are matters of state and local law, and many states have enacted statutes addressing unmanned aircraft over private property, surveillance of persons, and operations near critical infrastructure. A pilot who reasons purely from federal preemption will be technically correct about the airspace and still exposed to a civil claim or a state charge. The practical approach in commercial work is to identify whose property will be overflown, seek permission where it is reasonably obtainable, know the applicable state law, and document what was agreed. Client relationships and the operator's reputation depend on it as much as the legal position does.