Final episode in this series which has been attempting to find the greatest designed house of the year. There have been some awesome contributions throughout the series and we have all got a lot of great ideas for the super gaff we will build once we win the lottery. Tonight, Kevin McCloud visits three more competing houses, including a timber and steel clad home in Dungeness, a pink brick house in Belfast, and an 18th century converted mill in rural Scotland. At the end of the show he announces the overall winner of the Royal Institute of British Architects House of the Year 2015, before visiting the house and discovering why it has been crowned the best new home in Britain.