The World Most Expensive House!!   

Updown Court, a newly built mansion for sale outside of London, offers plenty of lavish amenities: five swimming pools, an eight-limousine garage, and mosaic floor made of 24-karat gold leaf in the downstairs study. The property, however, is best known for its price tag: more than 85 million British pounds (+$150 million USD).

If Updown Court fetches that price, it would make the 40,000-square-foot dwelling and its property the most expensive home ever sold, according to real estate agents. The target owner, according to developer Leslie Allen-Vercoe, is a superrich international buyer looking for a second, third, or fourth home in London. "The house has been designed for a specific market, which is the billionaire market, as opposed to the millionaire market," he says.

Larger in area than both the royal residences of Hampton Court Palace or Buckingham Palace, this magnificent estate symbolises the grand and imposing presence of the Great Houses of England, yet employs state-of-the-art 21st Century technology to provide the ultimate living environment.