Complete refurbishment of a 1920s semi-detached house which was in poor condition. A part two storey and part single storey extension was wrapped around the back and side of the original house, increasing the floor area of the house by an additional 50%. The extension was carefully designed so as to maintain lots of natural light in the existing house and minimise the visual bulk of the extension when seen from the road. The design is courteous to its established, leafy, residential surroundings, and uses a simple palette of materials – white painted render, striking red brick and natural slate. The fabric of the original house – walls, roof, floors and windows - was fully upgraded to exceed the energy performance and air tightness standards required by the Building Regulations.