Château DIY: Win the Dream will see aspiring chatelains compete in challenges to prove they have what it takes to win a life-changing prize: an authentic castle in France with multiple bedrooms, living quarters and outbuildings which could be worth up to £250,000 – lower than the average price of a home in the UK. The challengers will compete in a series of heats testing their skills in design, renovation, and business acumen: essential traits they'll need for running their own property. Each challenge will be guided and judged by the familiar faces of Château DIY's main series, who will share their vast and varied expertise of renovating and running these magnificent properties with the competitors. After three weeks of heats, a selection of successful candidates will be put through to the finals week where one lucky pair could win the prize of their dreams.