A composition of white-rendered and slate-clad rectilinear building volumes, offset from one another horizontally and vertically and incised with frameless, rectangular glazing, references the Conical Intersect artwork of Gordon Matta-Clark. A rectangular wall of mirror doubles the perception of the new spaces and forms in the open-plan living-kitchen-dining space of the ground floor. Ambiguously, the wood-lined interior both accentuates interiority, by recalling traditional salons and nooks, and connotes exteriority through the use of timber matching the decking outside. This perception is furthered by glimpses of garden vegetation through the frameless windows and in the mirrored wall. On the top floor, frameless rectangular openings to the walls and roof continue the exterior design strategy of the lower floors inside a traditional mansard building form. Timber cladding to the wall separating the bedroom and bathroom, and to the built-in desk and window surround on the floor below, visually recall the ground floor.