Good article, but I gotta disagree with that. I remember one show segment in the first season that took us on an inside tour of the earlier "house". It wasn't a real house by any stretch of the imagination, unless you know of houses that have hidden passageways behind the interior walls with cameras focusing through multiple two-way mirrors. That's the "camera cross" they talk about in the article and the first house had one too.
The old house, like the BB houses in other countries, was built specifically for the show. The new house is just a bigger and better version.
That aside, it was an interesting article. I wish they would do a tour of the new house for us viewers too. I like to see the behind the scenes stuff.
