I hate to say it, we don't have the standard of workmanship or mass builders capable of achieving it. Training the trades will take a long time and a lot of "we know better attitude". All of them do the builds on the cheap, cut corners where and when they can. As an example, I wouldn't trust Bellway to run a bath.
Smaller more independent builders have come a long way but in my opinion, we are still miles behind achieving anything like this on a mass scale. The recent warm grant scheme should highlight the amount of charlatans that are around.