This 1055 s.f. addition is for a family of four that needed additional bedroom space in an old adobe home located on a tight lot with no room to expand horizontally. The solution was to add a second story. The challenge was to design this second story addition in a way that resepected the scale and proportion of the existing home. Because the adobe walls could not support the weight of the addition, steel I-beams, bearing on steel posts, span the width of the house to support the second floor. The second floor porch and bedroom are clad in corrugated corten steel siding, which creates a striking contrast between the contemporary use of steel and the traditional use of adobe.