This video shows the construction of a super insulated house by German firm Hanse Haus, this happened during the course of just a few hours, from the poured concrete slab to watertight in a day! And yes - they can build you one in France too.
There were about 1000€ per square meter when we shot this video, I’ll put you in touch if you’re interested?
I want one! How much. . .?