World's most expensive house

Antilia, a 27-story skyscraper on the pricey Altamount Road in Mumbai, is the most expensive home in the world, valued at upwards of $1 billion. Mukesh Ambani, an Indian business tycoon and multibillionaire, moved into the 400,000-square-foot mansion in 2012 with his wife and three children.

It is deemed to be the world's most expensive residential property, after Buckingham Palace, which is designated as a crown property. It is thus the world's most expensive private residential property, valued over $1 billion. Its controversial design and ostentatious use by a single family has made it famous across the world, with severe criticism in the architectural press and mockery in popular media.

The modern property was designed by Chicago-based architects Perkins & Will, with the Australian-based construction company Leighton Holdings taking charge of its construction. The home has 27 floors with extra-high ceilings. (Other buildings of equivalent height may have as many as 60 floors.)

The home was also designed to survive an earthquake rated 8 on the Richter scale. It is considered by some to be the tallest single-family house in the world. Because it includes space for a staff of 600, others reserve that honour for a house meant to be occupied only by a single family.

Antilia, which was named for a phantom island in the Atlantic, features a multistory garage with space for 168 cars, a ballroom, three helipads, gardens, a temple, guest suites, a health level and a home theater that seats 50.

Recently, a fire broke out on a terrace of the building but was brought under control before it could do more damage.

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Source: Ontop Rankings