VeravenThe Maserati
infinitesunriseMost accessible public land in the US allows you to camp in any one spot for a max of 14 days and forbids you from doing stuff like hammering a bunch of nails into a tree that will likely end up in a sawmill. Either this dude privately owns a nice big tract of undeveloped forest (Actually possible, 10 acres costs less than a Maserati in some places) or some BLM ranger is gonna be real pissed.
I know a lot of people make an effort to use ropes instead of nails for the initial framework so that you don’t nail anything to the tree. With that in mind, if you’re good at it, you can legally build a pretty cool treehouse in a short while in a public forest, and just move it to a different tree within 14 days.
Yeah I think that would actually be completely legal, because I know there are campers who make spiderweb-style treenets for camping off the ground. Same concept: Lots of ropes and nothing permanently secured to the tree.