This whole house refurbishment and extension project by Proctor & Shaw looks to the rhythm of traditional dormers on an existing roof scape to inspire the radical transformation of a London home, forging new connections internally between levels and creating interior spaces bathed in diffuse natural daylight. Expressed externally as an assemblage of stacked luminous boxes, the rear extension evokes the ethereal quality of a floating ‘sky lantern’ at night. Located in Wandsworth, London.