I made my own just outside of Austin, TX once.

Bought a 10 AC farm just outside Blanco. Was already certified for growing organic "elephant" garlic.

Had a little cottage, a well, with rainwater collection (I flushed the toilets with this, it was nearly trivial to change-over the plumbing.)

Dropped Cable into it (for IP).

Added 2KW of solar panels, and a 250 gallon propane tank.

Was into it for maybe $130K, fully paid-off.

Grew my own food, hacked some.

Got tired of living without other technology folk around, sold it.