Overview: Chris meets Hamish and Diane Divett, who are rebuilding their house on the most unlikely spot - on the edge of a crumbling cliff top that plummets 40 metres to the sea below. Surfing Pastor Hamish Divett and his psychologist wife Diane have lived by the ocean for years, but in a dark, south-facing house that failed to take full advantage of the beautiful vista. To get the view they desperately desire, the couple have decided to push structural and logical planning to the limits. By building on a crumbling cliff with a sheer drop to the sea below, the Divetts will push their team to the edge to see this Grand Design though to completion.