The first images of our addition to an Edwardian house in Herne Hill, SE24 have now been included in the Architects Journal Project Library. Organised around a high-level glazed end elevation and a sloping timber roof structure, the space is airy and light without without loss of privacy. Internally the timber roof structure is complemented with a handmade Birch Plywood kitchen and contrasting green laminate surfaces. (Photographs by Steve Lancefield)