12) Mountain Home Road, Woodside, California – $117.5 Million
Owner: Masayoshi Son – Net Worth: $18.4 Billion
Japanese business tycoon Masayoshi Son purchased this property for $117.5 million in 2012. This 900 sq ft neoclassical house has a 1,117 sq ft colonnaded pool house, a retreat building, a detached library, gardens, a swimming pool and a tennis court.
=10) Copper Beach Farm, Greenwich, Connecticut – $120 Million
This residential property has a 13,519 sq ft main house with 12 bed rooms, a wood paneled library and a solarium. Sale price was $120 million in April 2014.