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Largest Real Estate Companies Research Summary The largest real estate company in the world is Keller Williams Realty, with a revenue of $381.4 billion. As of 2023, the global real estate industry has a market size of $4.4 trillion.

While Ross' wealth declined, it's been a good year for Orange County, California-based Donald Bren, who remains the wealthiest real estate billionaire in the U.S. Bren's net worth is now estimated at $18 billion, up from $17.4 billion in 2022.

the Buckingham Palace To date, the title for the most expensive house in the world is held by the Buckingham Palace in London. The larger-than-life property (which cannot be sold) is over 200 years old and is currently owned by King Charles III after the demise of the Queen of England, Elizabeth II.

The LeFrak family are arguably New York City's richest property dynasties, owning large parts of the city's prime properties. The family's property empire began in France in the late 19th century, but moved swiftly to the US at the beginning of the 20th century.

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But neither one of them has bragging rights as the billionaire with the most homes. That title appears to belong to Oracle cofounder Larry Ellison, who owns an estimated two dozen homes, including three in Newport, Rhode Island; four in Woodside, California; and six in Malibu (where he also has a restaurant and spa).

What's The Most Expensive House in The World?

1. Antilia, Mumbai, India, owned by Mukesh Ambani.
2. Villa Leopolda, Villefranche-sur-mer, France, owned by Lily Safra.
3. Fair Field, Sagaponack, N.Y, owned by Ira Rennert.
4. 18-19 Kensington Palace Gardens, London, U.K, owned by Lakshmi Mittal.

The Walton, Mars and Koch families have topped the list of wealthiest clans in the world, according to a September report from Bloomberg. The families have remained in their positions as the richest in the U.S. and in the world for several years.

Billionaires' Row is the name given to a group of ultra-luxury residential skyscrapers and the area surrounding them around the southern end of Central Park in Manhattan, New York City.

Billionaires' Row is the name given to a group of ultra-luxury residential skyscrapers and the area surrounding them around the southern end of Central Park in Manhattan, New York City.