I think this dude built it himself. My father in law and my grandpa both built their own homes that they still live in today, neither one had any professional

I think this dude built it himself. My father in law and my grandpa both built their own homes that they still live in today, neither one had any professional construction experience. Not nearly to this standard, but nobody cared about this sort of thing back the. And they didn’t have YouTube to solve problems.