6 of the Biggest Houses in the World

By: Alia Hoyt  | 
The One Bel-Air exterior
The One Bel Air is one of the biggest houses in the world, at 105,000 square feet. The huge mansion has a sky deck and putting green, nightclub, several swimming pools, a 50-seat theater and a four-lane bowling alley. Allen J. Schaben/Los Angeles Times via Getty Images

Most people are overjoyed to have a couple thousand square feet to call their own, but the world's ultra-wealthy are living in far more space than that. From ultramodern mansions to historically significant properties, there are a handful of truly huge houses scattered around the world, each with their own perks and amenities. Here are six of the biggest houses in the world starting with the "smallest." Our list excludes places like the Palace of Versailles, which is no longer a home, but instead a museum.


6. The One

dining room inside The One Bel-Air
The dining room inside The One Bel Air has a view of its 10,000-bottle wine cellar. Allen J. Schaben/Los Angeles Times via Getty Images

Located in the elite Los Angeles suburb of Bel Air, Fashion Nova owner Richard Saghian purchased The One in March 2022 at auction for $141 million. Originally, the estate was listed for a whopping $295 million, but no one offered anywhere near that sum for the 21-bedroom, 49-bathroom stunner. Before that, the property was developed over a 10-year period by a former film producer named Nile Niami. However, when lenders decided to foreclose, his firm had to file for bankruptcy, and the huge mansion achieved dubious status as the highest auction price ever for a home in the U.S. In addition to five swimming pools and a 30-car garage, The One boasts 74,000 square feet (6,875 square meters) of luxe space and all the modern amenities a fashion magnate could ask for, including a nightclub, a 10,000-bottle wine cellar and a 5,000 square-foot (464 square-meter) master bedroom. It is considered the largest modern house in America.


5. Villa Leopolda

Villa Leopolda
Villa Leopolda dates back to the reign of King Leopold II of Belgium. LAFARGUE/MERILLON/Gamma-Rapho via Getty Images

The French Riviera is home to Villa Leopolda, which was originally built by King Leopold II of Belgium, then presented as a gift to his mistress, a French teenage prostitute. The stunning 18-acre (7.2-hectare) estate appears in the classic movie "To Catch a Thief" and includes 11 bedrooms and 14 bathrooms. It offers unparalleled views of the Mediterranean, as well as a greenhouse, botanical gardens and even a helipad. Today, Villa Leopolda is considered the most expensive private residence in all of Europe, with 80,000 square feet (7,432 square meters) of space. It is currently owned by a Russian billionaire who bought it for $750 million in 2008.


4. Witanhurst

Witanhurst, an expensive private estate owned by Russian oligarch Andrey Guryev, is reported to be the second-largest private residence in London after Buckingham Palace. Leon Neal/Getty Images

The second-largest residential estate in London (more about the first in a moment), Witanhurst is 90,000 square feet (8,361 square meters) of luxury. It's currently owned by a Russian oligarch named Andrey Guryev, although he's not believed to actually live there full-time. The $400 million Georgian Revival mansion has 25 bedrooms and is a study in amenities, including a sauna, 70-foot (21-meter) swimming pool, movie theater, ballroom and massage parlor. Finished in 1920, it was recently renovated.


3. Antilia

Antilia is one of the tallest buildings in Mumbai, India, and has a 168-car garage. SNEHIT PHOTO/Shuterstock

At 400,000 square feet (37,000 square meters), the Mumbai skyscraper of Antilia dwarfs even the most opulent personal residences out there, yet is only the third-biggest house on this list. it is the current Guinness World Record holder for largest house (owned by an individual). The huge property is found on South Mumbai's ultra-swank Altamount Road, one of the most expensive areas in the world. It is owned by Indian business magnate Mukesh Ambani, who commissioned it to be able to withstand an earthquake of up to 8 on the Richter scale.

The property is managed by a staff of 600 and although it's only 27 stories, their oversized stature actually makes it as tall as the average 60-story building. Six floors are dedicated to housing up to 168 cars, plus there's a movie theater, beauty salon, ice cream parlor and nine high-speed elevators. Since Mumbai is known for its high temperatures, the property even has a room where artificial snowflakes shoot from the walls. This personal skyscraper cost somewhere between $1 and 2 billion to construct.


2. Buckingham Palace

Buckingham Palace
Buckingham Palace is the largest private residence in England. Ewelina W/Shutterstock

Britain's royals don't take care of business in bland old cubicles. Instead, England's Buckingham Palace serves as both the home of the sovereign and the royal administrative headquarters. Technically, Buckingham Palace doesn't belong to the British monarch (i.e., he/she can't sell it). It is owned by the Crown Estate, an independent company that gives any profits to the British Treasury. (In return, the monarch receives a fixed annual payment.)

With 775 rooms to its credit, including 52 royal bedrooms and guest quarters, there are also 19 state rooms and 188 staff bedrooms on-site. This is one mansion you can pay to visit, though the private rooms will be off limits. The true stars of the property are probably the regal throne room and the gilded white drawing room, which contains a Victorian-era gilded piano. Currently, the property is valued at a whopping $4.9 billion for the 828,000-plus square feet (76,924 square meters) of space.


1. Istana Nurul Iman Palace

Istana Nurul Iman
The Sultan of Brunei held a banquet at Istana Nurul Iman the day after the wedding of his son, the crown prince, in 2004. The palace is considered the biggest house in the world. Mark Cuthbert/UK Press via Getty Images

The official residence of the Sultan of Brunei, this massive estate cost more than $1.4 billion to build — and that was back in 1984 when a buck went a lot further. Istana Nurul Iman is also the official seat of Brunei's government, and since the 29th Sultan of Brunei calls it home, it has earned the Guinness World Record for the largest residential palace. At more than 2.1 million square feet (200,000 square meters) in size, the palace features 1,788 rooms, 257 bathrooms and 44 marble staircases. It also boasts an enormous mosque, complete with a golden dome.

In addition, there's a 5,000-person banquet hall, five swimming pools and a 110-car garage. Even the hundreds of polo ponies have their own air-conditioned stables. This impressive estate is several times larger than Buckingham Palace or the Palace of Versailles. Every year, for a few days after Ramadan, you can visit the palace for free and be personally greeted by the Sultan or his wife, depending on your gender.