Icelander here, I'm more concerned how well does this house work in icelandic conditions? Does it handle earthquakes well? What about regular storms? Being wet for months end? Constant freezing and thawing? Can you put it in an active volcano? Does if float on magma? There are lot of questions here!
While I'm not really concerned about it, I doubt that it would live up to Danish building regulations. I'm mean we pressure test our homes... then install ventilation systems because living in a house that can parse the pressure test would be unhealthy. We then continue to get headaches and stuffed noses because the ventilation systems aren't any good either.
Anyway, it doesn't look like this house would fit the required amount of isolation.