4) One Hyde Park, London, U.K – $237 Million
The owner of this penthouse is not known. According to reliable sources, it is an Eastern European, who paid 140 million pounds. This broke the previous record for world’s most expensive apartment ($221 million in 2011 for a penthouse in the Knightsbridge area of London).
3) Fair Field, Sagaponack, N.Y. – $248 million
Owner: Ira Rennert – Net Worth: $6 Billion
This house is owned by billionaire industrialist Ira Rennert. The property value is around $248.5 million according to 2014 tax assessment. This hulking 29-bedroom, 39-bath Hamptons compound has three swimming pools. It is run by its own power plant.