This house came with an interesting mid-century architectural pedigree. Arne Kartwold, an architect who worked in William Wurster's office, designed the original house in 1941. Hans Gerson, another noteworthy Bay Area architect designed an addition in 1955. In 2003, our office added a family room and renovated the existing kitchen. A rear terrace and hillside were preserved by locating the new addition beneath the precariously cantilevered existing master bedroom. A large wall of glass with a butt glass corner provides the new family room with a beautiful bay view.