In the design for this single family house the sloping site is used as a device for programmatic and volumetric organization. A box-like volume bifurcates into two separate volumes; one seamlessly following the northern slope; the other lifted above the hill creating a covered parking space and generating a split-level internal organization. The volumetric transition is generated by a set of five parallel walls that rotate along a horizontal axis from vertical to horizontal. The ruled surface maintaining this transition is repeated five times in the building. From inside the huge window strips from floor to ceiling allow a fluid continuity between interior and landscape. From the exterior the reflective glass seams to become one with its surroundings.