Episode 4

At the upside-down house in Wales, the building is finally watertight and owner Marianne is back on site to inspect after months of illness. But will she like what she finds when she gets there?

And in Dunblane, a dilapidated old mill is being restored to its former glory. But there's bad news in store for homeowner Darren when the building inspector pays a visit to the site. Architect Bobby Halliday has to pull out all the stops to keep the build on track.