Did you watch the two Grand Designs programs? They give an identification of the prices for building bespoke at the moment. Last weeks was a massive house that was 4 times the size of a normal house and it worked out at about $3000 sqm . They may have had some economies of scale due to the massive size.
No I didn't catch that. Must've been some pretty amazing economies as the website quotes 6k to 9k per square meter. Will try to find it.