Billingshurst, West Sussex

Kevin McCloud meets master carpenter Olaf, who is facing the biggest challenge of his career - creating an oasis for himself and partner Fritha on a small slice of land in West Sussex, which happens to be surrounded by a mainline railway and a busy A-road. Not only that, but half of the plot can't even be built on due an underground mains sewer. All they're left with is a very small triangle on which to build their future life together. With £190,000 in the bank, Olaf and Fritha must use all the ingenuity they can muster to make their triangular three-bedroom house come to life.