San Francisco 49ers co-owner Gideon Yu has listed his Silicon Valley mansion for $27 million. The former tech executive and his wife Susie Yu bought the then-recently built Atherton home for $21 million in 2016, according to Dirt. The three-story, 12,000-square-foot home has six bedrooms and 7.5 bathrooms. There is also a single-story guesthouse in the back yard. White oak floors run through much of the house, as do detailed moldings and stone features. Amenities