Kevin McCloud reveals the winner of the most prestigious prize for residential architecture, the Royal Institute of British Architects House of the Year 2017. But first, Kevin, the architect Damion Burrows and magazine editor Michelle Ogundehin sift the final category from the long list, all of them homes that share a pared-back, minimal look. Properties include a former caretaker's shed in London, and a small but perfectly formed home with oak panelling and sleek polished concrete floors. Last in the series.