The 20 most expensive billionaire homes in 2015 & their owners (+Photos)

7) Ellison Estate, Woodside, California – $200 Million

Owner: Larry Ellison – Net Worth: $49.3 Billion

Oracle founder Larry Ellison is also an avid real estate collector. He is the owner of Ellison Estate. The construction cost of this house was around $200 million. This 23-acre Japanese style estate was built in 2004. Here you will find 10 buildings, a tea house, a man-made lake, a koi pond and a bath house. Ellison Estate was assessed at $73.2 million in 2013.