The key strategy here was to deliver generous space and volume in a constrained budget – is to exploit the garage/ porch/ lean-to as an informal living space.The lean-to is an unconditioned space and over-sized garage encouraging the informal inhabitation of semi-enclosed space. A polycarbonate skin on a light steel frame, the space is large open and light. It interacts with the garden, interior of the house and street. Rooms look into and vent into, the atrium-like space, which can be constructed at a rate far less than the fully enclosed space.The plan aims to accommodate the possibility of semi-independent households – from adult children, to invalid parents.