41 & 41A Astonville Street SW18 5AN
Alterations including erection of mansard roof extension to main rear roof (with French doors and safety railings) including raising the ridge by 250mm and extension above part of two-storey back addition; formation of roof terrace above two-storey back addition with 1.7m high screen surround; installation of replacement double glazed timber windows to front, rear and side elevations and installation and relocation of a new rear external access stair from the first floor flat to the rear garden with new access door from the existing kitchen. Erection of part single-storey rear extension to ground floor flat.