This is an unusual family house of tenuously balanced volumes and voids that bury into the ground then reach up above the brow of the hill. The incisive brief clearly articulates the desires of a man whose life is restricted by disability: ‘I do not want a simple house. I want a complex house, because the house will define my world.‘ The dwelling accommodates the client‘s physical limitations whilst creating provocative visual and structural facets to challenge his senses; he wanted to inhabit the house in imagination too. Three discrete volumes are stacked vertically, linked by two circulation points: a spiral stair to one side and a central open elevator that faces three storeys of shelves. The lowest level of the house is accessed through a circular courtyard. This is an intimate space, like a series of caves in the hillside, containing a kitchen and dining area and a family room. The first floor is glazed and open, ensuring a strong visual bond with the outside world. An expansive west-facing terrace consolidates this link with the exterior, offering views across the city. The cantilevered upper storey houses sleeping accommodation: the parents‘ rooms at one end, opening on to an east-facing terrace, and the children‘s bedrooms on the west, accessed up the spiral stairs secreted in the cylindrical steel drum that appears to elevate this uppermost volume.