Kevin McCloud revisits Stuart and Rosie Treasurer from Wirral, who he first met in 2016 when they set out to transform a small bungalow from a 1960s dormer into a slick piece of 21st-century architecture. The plan saw the couple decapitate the building and balance a new floating timber box on top to create five bedrooms, spending as little as possible on plumbing, electrics and insulation, but stress levels spiralled when neighbours grumbled at the ultra-modern creation. Nine years on, Kevin sees how Stuart and Rosie are getting on.