World’s most expensive billionaire homes | Armonk Real Estate

Owner: Bill Gates, net worth $77.5 billion

Market value: $120.5 million, 2014 tax assessment

The high-tech Lake Washington complex owned by the world’s second-richest man boasts a pool with an underwater music system, a 2,500-square-foot gym and a library with a domed reading room.

 

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http://realestate.msn.com/worlds-most-expensive-billionaire-homes#2

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