Here are before and after photos of a house in Amberley, West Sussex where planning permission was obtained by another practice for major extension and refurbishment works, and we were asked to develop this design in further detail to facilitate approval under the Building Regulations, and to obtain detailed tenders for the building work. This project brought with it many challenges, mainly because the house is on the edge of a steep hill – some of the extension was suspended above the gound, and some (the kitchen) was to be partly below the ground.