Kevin McCloud meets architect Iain and his wife Jenny, who intend to build an enormous black minimalist house right in the middle of a 19th-century Scottish country estate. Their grand vision also involves connecting the new rectangular block to a dilapidated gardener's bothy - and the neighbours are watching.

Dan and Nina want to build a unique family home, but their plot is dominated by a pond filled with local drainage. Will their West Sussex house be sublime and sleek or a Shrek-like swamp?