Former engineer Bruce Campbell realized his dream of living on an airplane. He retired and in 2003 bought a decommissioned “Boeing” 727-400 for $220,000. The plane was flown from Greece to Bruce’s 10-acre plot near Portland, Oregon, and he’s been living there ever since.
If he built a 200k $ home on the same plot, it would have had considerably larger footprint and the trees around the plane wouldn't even exist then.
A lot of questions though about the essentials like water, energy, sewage etc.
If he puts some work in it, I think he can build a very self-sustainable house out of it.