My town has a law where if a tree is over 10" in diameter, there's a fine of 5k if you cut it down. But actually, it's worse, because if they find out you plan to do this, or did it intentionally, they can continue to fine you arbitrarily and force you to re-plant a tree!
So you may own some land and have approval to build human habitation on it... but the tree prevents you, and you simply cannot do it via any legal means.
Otoh if I could... pay the town 5k, and also permanent preserve say 100 trees elsewhere... I could use my own land. I love trees as much as the next one, but it's just a huge risk to allow them to grow on my land cause once they pass that threshold, I irrevocably lose control of land I've paid for and continue to pay a lot of tax on.
It's also funny that if your enemy owns land, and you "help" his trees grow that thick without him knowing, property he planned to use as say an ultimate frisbee field will be permanently unusable for him, with no way out (except begging the city council, etc. and other behavior which is indistinguishable from bribery (money or psychologically))