I met Bill Castle in Costa Rica about 20 years ago. He and his wife Barb were running a B&B just south of Puerto Limón on the Caribbean. Bill was a real builder, had built bridges before dropping out and creating a village in the woods of downstate New York called Pollywogg Holler. He ended up being one of the 3 featured builders in HomeWork: Handbuilt Shelter.
He’s an extraordinary builder. Chris McvClellan wrote an article for The Mother Earth News last year on his $10,000 house, anf I got reminded of it by Lew on his Shelterpub Facebook page. Article here: https://www.motherearthnews.com/Green-Homes/Timber-Frame-Homes.aspx