Real size lego house

What do you get when you combine a kids dream and a huge BBC budget? You get James May (top gear) who build a full working house out of lego. In this house he planned to life in for a year. For the project there are more then 3 million lego parts used. In one normal size brick fits 272 normal lego parts. Think a lego block brick will isolate pretty well (as long as you get it airtight) because its made out of plastic and air. Wonder how they made the doors and if the wooden construction still is needed when finish. But i think i need to wait for that information till the tv-show.