A new house in a restricted site in St John's Wood, London, replaces a 1950s two-storey house. Planning consent negotiated by the architect provided for an extra storey and for relocation of parking space, and doubled the usable, habitable floor area. The house, a speculative building for a developer, is constructed of load-bearing masonry and steel. The double-height corner glazing is supported by a steel frame which also supports the top floor. The hall is triple-height; a staircase unites the interior spaces. Exterior facades are in brick and render; windows are of steel. The construction budget was £130,000.