Summary: it is necessary to build with the materials found on the spot, very isolate places of hot and fraoid, very easy to heat and consuming almost no energy.
Of course here it is a question of building places of work and of temporary life.
Perrsonne does not live full time on the farm except maybe a guardian.
The construction will be made of earth / straw.
A farm must contain a relatively large kitchen with a large storage of canned food, a room for catering and entertainment, various workshops and reception.
Another video that shows a slightly different technique