The company sold a portion of its 33-acre San Antonio Center in Mountain View, Calif., under threat of condemnation. : Federal Realty Investment Trust has completed the sale of an 11.7-acre segment of San Antonio Center, its 33-acre retail destination in Mountain View, Calif., in Silicon Valley. The real estate company sold the land at the 376,000-square-foot regional shopping center to the Los Altos School District under threat of condemnation. Federal Realty has owned San Antonio Center since 2015, having acquired the property from San Antonio Associates for $62.2 million.