The U.S. housing market may be struggling to regain its footing, but the $100-million sale of a single-family home in the heart of Silicon Valley shows that luxury properties are still in demand.Russian billionaire Yuri Milner, a big investor in Facebook, daily deal website Groupon and “Farmville” game maker Zynga, bought the lavish, 25,500-square-foot mansion in Los Altos Hills, Calif.
The sale is believed to be one of the largest in U.S. history for a single-family home.