Pre-Fab
Companies providing contemporary energy efficient solutions
One of my favorite homes was the Breexehouse by Bluhomes https://www.bluhomes.com/gallery Unfortunately the home is expensive for many who want to build something energy efficient and lower total cost of ownership.
Another amazing design but not affordable: https://www.barrons.com/articles/absolutely-prefab-ulous-why-luxury-buyers-are-moving-toward-modular-01666103482
This is a luxe tiny home and looks like two stacked shipping containers
A California Startup Rolls Out Flat-Pack Tiny Homes Priced at $38Khttps://www.dwell.com/article/vika-living-flat-pack-prefab-tiny-home-aa05526