Depending on how utilitarian you want and are allowed to be, you might also look at "metal buildings", timber framed walls and roof over a concrete slab. The expense in housing is in the interior finish anyway.
https://en.wikipedia.org/wiki/Quonset_hut
Depending on how utilitarian you want and are allowed to be, you might also look at "metal buildings", timber framed walls and roof over a concrete slab. The expense in housing is in the interior finish anyway.