Was it Grand Designs 2 weeks ago (before the Lake District one) where they had an old terraced house that they gutted and rebuilt? It could have been another programme as we've been watching various old recordings of Grand Designs, Other People's Houses and Property Ladder over the days.
Did anyone find it worrying to see how the place had originally been built? No foundations, piers which were crumbling, walls not joined together....
However, seeing how long its been standing, makes you wonder whether some of the current Building Regulations are a bit OTT.
D