Woldon has completed a full refurbishment of a mews house within the Harley Street Conservation Area in Marylebone. Following a brief for a commercial let, designs include a new naturally lit basement, addition of a second bedroom, new reception and work space, and double height ceilings at first floor. Behind a retained façade, the plan of the building has been completely reconfigured to create a bright and spacious house. The stair is relocated to improve circulation on a long and slender floor plan, and a lightwell is introduced through all floors to bring light to the basement. The building is designed to minimize energy demands with an MVHR system and all existing external walls insulated internally. The palette of materials includes pale timbers and polished concrete with areas of existing brickwork repaired but left rough to show the texture and grain of the historic mews. In the basement, a timber ceiling is incorporated to bring a softness and a sense of warmth.