His 1000 sq.ft. circular house could be put together by a couple of people in less than 2 days, weighed under 3 tons (lots of aluminum), self-cooling. It was supported by a single mast, and portable. 80 years ago, the ‘kit’ cost $6500, delivered.
You can see the only still-existing house at the Henry Ford Museum site. https://www.thehenryford.org/visit/henry-ford-museum/exhibits/dymaxion-house/
Apartments are much better than small houses
Especially for energy use, the less exterior walls you have per unit, the more efficient it is to heat and cool.
Passive heating is possible with them, even in Maine, where they’re building college dorms that way.