We enlarged a typical London terraced house to provide a young family with just under fifty percent more living space. A single storey rear extension and mansard roof extension were combined with a reworking and complete refurbishment of the existing house. Internal spaces have a stripped back palette of exposed and painted brickwork and oak flooring, linking one room to another. There are moments of delight through the building. A frameless rooflight linking the new extension to the existing building. An existing staircase window allows for a light scoop next to the sweep of the new loft stair case. Full width sliding doors at ground and second floor enhance the connection with the garden and urban landscape beyond.