At garden level, a new rear extension opens a kitchen-dining room to the landscape, its lowered sills widening the views out. We reorganise the reception rooms into one dual-aspect drawing room, and a glazed rooflight separates new from old so the historic wall stays visible and lit. Lowering the lower-ground floors recovers the villa's original proportions, while a new stair replaces a steep, awkward inheritance of earlier alterations. The retrofit runs through the fabric: breathable wood-fibre insulation, slimline double glazing and a 14kW air source heat pump that cuts operational carbon by 90% and heating costs by 65%. In the grounds, a separate guest annexe in timber, brick and zinc will weather into the wooded slope.