As of my knowledge cutoff in 2023, here are 20 of the world’s most expensive houses and their owners:
- Antilia in Mumbai, India – owned by Mukesh Ambani, the chairman of Reliance Industries. The 27-story, 400,000-square-foot mansion is valued at around $2 billion.
- Buckingham Palace in London, UK – owned by Queen Elizabeth II. The palace has 775 rooms, including 19 state rooms, 52 royal and guest bedrooms, 188 staff bedrooms, 92 offices, and 78 bathrooms, and is estimated to be worth $1.55 billion.
- Villa Leopolda in Cote D’Azure, France – owned by Lily Safra, widow of billionaire Edmond Safra. The villa is valued at around $750 million.
- The One in Bel-Air, California – owned by Nile Niami, a film producer and real estate developer. The 100,000-square-foot mansion is valued at $500 million.
- Witanhurst in London, UK – owned by an anonymous Russian billionaire. The mansion is valued at around $450 million.
- Four Fairfield Pond in Sagaponack, New York – owned by Ira Rennert, an American businessman. The estate is valued at around $248 million.
- Ellison Estate in Woodside, California – owned by Larry Ellison, the co-founder of Oracle Corporation. The estate is valued at around $200 million.
- Palazzo di Amore in Beverly Hills, California – owned by Jeff Greene, a real estate developer. The estate is valued at around $195 million.
- Hearst Castle in San Simeon, California – owned by the State of California. The castle was built by William Randolph Hearst and is valued at around $191 million.
- Xanadu 2.0 in Medina, Washington – owned by Bill Gates, the co-founder of Microsoft. The estate is valued at around $147.5 million.
- 18-19 Kensington Palace Gardens in London, UK – owned by Lakshmi Mittal, an Indian steel magnate. The property is valued at around $128 million.
- Seven The Pinnacle in Big Sky, Montana – owned by Tim Blixseth, a real estate developer. The estate is valued at around $155 million.
- The Odeon Tower Penthouse in Monaco – owned by an anonymous buyer. The penthouse is valued at around $400 million.
- Chartwell Estate in Los Angeles, California – owned by Jerry Perenchio, a former CEO of Univision. The estate was the former residence of President Ronald Reagan and is valued at around $350 million.
- Park Place in Surrey, UK – owned by the President of the United Arab Emirates. The estate is valued at around $350 million.
- La Californie in Cannes, France – owned by Roman Abramovich, a Russian billionaire. The estate is valued at around $200 million.
- Les Palais Bulles in Cannes, France – owned by Pierre Cardin, a French fashion designer. The estate is valued at around $455 million.
- Kensington Palace Apartment in London, UK – owned by Prince William and Kate Middleton. The apartment is valued at around $89 million.
- The Penthouse at 220 Central Park South in New York City – owned by Ken Griffin, the founder of Citadel LLC. The penthouse is valued at around $238 million.
- Beverly Hillbillies Mansion in Bel-Air, California – owned by Jerry Perenchio, a former CEO of Univision. The estate was the former residence of the Clampett family in the TV show “The Beverly Hillbillies” and