The rear extension is arranged over two storeys, each treated as a distinct element. At ground floor, a flat-roofed volume in pale brickwork features three arched doors with green-painted glazing, opening directly onto the garden — elegant in proportion and quietly confident in character. Above, a single-pitched rendered volume containing the master bedroom is set back from the ground floor extension, its modern detailing echoing the rendered finish of the existing house while clearly reading as something new. In the loft, a lead-clad dormer provides two children's bedrooms within a modest footprint, sitting discreetly within the conservation area. Rooflights maximise light into the kitchen below, while exposed oak joists add relief to the ceiling and help define the dining area within the open-plan ground floor.