>Or, you could find a tree company that won't ask questions and just have them come out, say they're all on your land

This is a fantastic way to have something stupid happen, like a person get injured or something insignificant get broken, and now insurance is involved and everything costs 1000x more.

Or, you know, a nosy neighbor sees that you've hired an unlicensed contractor, and calls the police. Which has happened in our neighborhood, because it's full of old people who have nothing better to do than be nebby about other people's shit.

Because, you know, if you remove a tree that isn't yours, you will be successfully sued and liable for monetary damages.