The most expensive home ever sold in California never actually went on the market. Softbank founder Masayoshi Son, whose net worth rests over $15 billion, discreetly snapped up the nine-acre Woodside estate at 360 Mountain Home Rd. in late 2012 for a record-shattering $117.5 million.
Six years later, the Japanese billionaire's Bay Area tree-covered abode still tops the list of most expensive Golden State homes, according to a new report by Property Shark. The real estate website sifted through…