The Most Expensive Houses in the World, Ranked by Reported Value

The most expensive house in the world is usually said to be Antilia, Mukesh Ambani’s 27-storey tower in Mumbai, with construction costs reported at between US$1 billion and US$2 billion. That figure is an estimate, not a sale price. This guide is for readers who want to know which numbers are real: it ranks twelve famous homes by their reported value, labels each figure as a recorded sale, an agreed price, an asking price or an estimate, gives the date and source, and explains what makes each building notable as architecture. It names no street numbers and gives no details about how the owners live today.

At the experimental end of the luxury market sits an underwater hotel suite off the Florida coast; at the other end of the scale are really small houses and the reasons why tiny houses are this generation’s big dream. The homes below show how far the opposite extreme can go.

How the values were checked (sale vs asking vs estimate)

Claims about the most expensive house in the world are often repeated without a source, and many are guesses. We used four labels, from strongest to weakest:

• Recorded sale: a price shown in land registry or property records, or reported from them by established news outlets.
• Agreed price: a price agreed in a signed contract, even if the sale did not complete.
• Asking price: what the seller asked; the final price may be lower and is often not disclosed.
• Estimate: a cost or value estimated by journalists or analysts. Treat it as approximate.

Where no reliable figure exists, we say so. Prices are in the original currency and are not adjusted for inflation, so a 2004 price cannot be compared directly with a 2019 one.

Which is the most expensive house in the world? 12 contenders

1. Antilia, Mumbai, India

Antilia is a 27-storey private residence about 173 metres tall, with roughly 37,000 m² (400,000 sq ft) of floor space, designed by the Chicago-based architects Perkins and Will for Mukesh Ambani. Its floors are stacked like separate houses, with gardens, parking levels and leisure floors between the living levels; structural ambition drives cost as much as finish, as extraordinary cantilevered house designs also show. Its cost has never been published by the owner, yet it is the home most often named the most expensive house in the world. Gulf News noted that construction costs have been reported at between $1 billion and $2 billion, while The New York Times reported a far lower $50–70 million in 2008 (Gulf News). Claims about its staff size and room list come from press reports and are not verified here.

2. Villa Leopolda, Villefranche-sur-Mer, France

Villa Leopolda is a Belle Époque villa set in large terraced gardens on the French Riviera, on land once owned by King Leopold II of Belgium. The present villa was remodelled in the 1930s by the American architect Ogden Codman Jr., and its owners have included Gianni Agnelli and, from 1987, the banker Edmond Safra and his wife Lily Safra (who died in 2022). In 2008 the Russian businessman Mikhail Prokhorov agreed to buy it for €390 million, then withdrew during the financial crisis; in March 2010 a court in Nice ruled that the owner could keep his deposit of about €39 million (ABC News, 2010). The €390 million price was therefore agreed but never paid; had the sale completed, it would have been a serious rival to Antilia as the most expensive house in the world.

The aerial view above shows why the setting matters as much as the building: the villa sits above the Mediterranean, surrounded by mature gardens that would be impossible to recreate today.

3. Fair Field, Sagaponack, New York, USA

Fair Field, built for the industrialist Ira Rennert in the Hamptons, is one of the largest private houses in the United States, set on about 63 acres (25 hectares) with formal gardens, outbuildings and its own power plant, according to press reports. No sale or official valuation has been published, so it has no figure in our table. Its plan, a long Italianate-style main house with symmetrical wings and garden axes, borrows from European country estates.

4. Lakshmi Mittal’s house, Kensington Palace Gardens, London, UK

Kensington Palace Gardens, a private tree-lined road beside Kensington Palace, is one of the most expensive streets in London. The steel businessman Lakshmi Mittal bought his house there from Bernie Ecclestone in 2004 for a reported £57 million, then a world record for a house (Spear’s). The building is a 19th-century Italianate villa that was extensively rebuilt and lavishly finished inside, including marble reportedly sourced from the same Indian quarries as the Taj Mahal, which earned it the nickname “Taj Mittal”.

5. The penthouse at One Hyde Park, London, UK

One Hyde Park in Knightsbridge, designed by Rogers Stirk Harbour + Partners and completed in 2010, is a group of glass-and-steel residential towers linked by glazed cores. Land Registry documents made public in 2011 showed that a company linked to the Ukrainian businessman Rinat Akhmetov paid £136.4 million for two apartments at the top of the building, to be combined into one penthouse, the most expensive flat sold in the UK at the time (City AM, 2011). Other outlets reported the price as £136.6 million.

6. Larry Ellison’s estate, Woodside, California, USA

Larry Ellison’s estate in Woodside was completed in 2004 after about nine years of work and was designed to evoke a 16th-century Japanese imperial villa, with timber buildings, a man-made lake and Japanese gardens. Its architect is reported as Paul Driscoll. Its construction cost has been widely estimated but never confirmed, so no figure appears in our table. It shows how far a client can take a borrowed tradition; for a calmer version of the same ideas, see these modern Japanese house designs.

7. Roman Abramovich’s house, Kensington Palace Gardens, London, UK

Roman Abramovich, the former owner of Chelsea Football Club, bought a large stucco mansion on Kensington Palace Gardens in 2011. Its price was widely reported but not confirmed by public records we could check, so it is not in our table. He later obtained planning permission for a large basement extension; deep basements of this kind, adding pools, gyms and car storage below the garden, became a typical way to enlarge protected London houses whose façades cannot change.

8. Blossom Estate, Palm Beach, Florida, USA

The hedge fund founder Ken Griffin assembled a large oceanfront estate in Palm Beach from several neighbouring plots, a common strategy for creating privacy in a crowded coastal market. The total amount paid has been reported differently over time and is not included here. Griffin’s best-documented record purchase is elsewhere: in January 2019 he closed on a penthouse at 220 Central Park South in New York for about $238 million, then the highest price ever paid for a home in the United States (Bisnow, 2019).

9. Bill Gates’ house, Medina, Washington, USA

Bill Gates‘ house on the shore of Lake Washington was designed by Bohlin Cywinski Jackson with Cutler Anderson Architects and took about seven years to build. It is partly set into the hillside, and its timber-and-glass pavilions step down towards the lake. Its reported cost and assessed values are covered, with dates and sources, in our detailed guide to the Bill Gates house.

10. Yuri Milner’s house, Los Altos Hills, California, USA

In 2011 the technology investor Yuri Milner bought a newly completed house in Los Altos Hills for a reported $100 million, then believed to be the highest price ever paid for a single-family home in the United States (ABC7 / Associated Press, 2011). The house, reported at more than 2,300 m² (25,500 sq ft), was designed in a French château style, with terraced gardens overlooking the San Francisco Bay area.

11. Broken O Ranch, Montana, USA

The sports and property investor Stan Kroenke bought the Broken O Ranch in Montana in 2012. It was listed for $132.5 million; the final price was not disclosed. Unlike the urban mansions above, its value lies mainly in land, water rights and farming, with a low, timber-framed main house that fits into the open landscape, as the photo shows.

12. Tamara Ecclestone’s former house, Kensington Palace Gardens, London, UK

The red-brick mansion associated with Tamara Ecclestone on Kensington Palace Gardens was extensively refurbished with leisure rooms, a basement pool and other amenities described in press features. No reliable sale record was found for this guide, so no value is given. It illustrates the same London pattern as the Mittal and Abramovich houses: historic exteriors kept, with modern facilities hidden inside and below ground.

Why Buckingham Palace is not on this list

Many rankings put Buckingham Palace first, with valuations in the billions. It is left out here because it is not a private home that has been bought or sold. It has been the official London residence of the UK’s sovereigns since 1837 and is today the monarch’s administrative headquarters, with 775 rooms, according to the Royal Household. Any price quoted for it is a guess, not a market figure.

What makes the most expensive houses in the world so costly?

Across these twelve homes, the same factors drive the price:

• Location scarcity: a few streets and coastlines, such as Kensington Palace Gardens, the French Riviera and Palm Beach, have very few plots and many wealthy buyers.
• Land: large gardens, waterfronts and, in the case of ranches, farmland and water rights.
• Architecture and heritage: historic buildings that cannot be replaced, or new buildings by well-known firms, such as Perkins and Will or Rogers Stirk Harbour + Partners.
• Construction and finishes: deep basements, stone and marble, specialist glazing and security, and custom building services.
• Market timing: many records were set just before the 2008 crisis or during the low-interest years of the 2010s.

A related point: the architects of these homes rarely share in their owners’ wealth, as our profile of the richest architect in the world shows.

Design lessons from billionaire mansions

Most of these homes cannot be copied, but several design ideas can be applied at any scale:

1. Setting first: Villa Leopolda and the Gates house are defined by how they sit in their landscape, not by their size.
2. Keep historic fronts, change the inside: the London houses show how a protected façade can hide an entirely new interior.
3. Stack instead of spread: Antilia shows how a tight urban plot can be used vertically, with gardens on upper floors.
4. Use borrowed traditions with care: the Ellison estate shows both the appeal and the cost of recreating another culture’s architecture.
5. Value is not size: the highest prices often reflect scarcity of land, not floor area.

Other private worlds of the very rich include luxury doomsday bunkers and, in a different style, Donald Trump’s house.

Conclusion

If you only remember one thing, remember the label. The most expensive house in the world, Antilia, is ranked on an estimate; the highest agreed price in this list, Villa Leopolda’s €390 million, was never paid; and the highest recorded US sale, Griffin’s $238 million penthouse, is an apartment. When you next see a ranking of the most expensive house in the world, check whether each figure is a sale, an asking price or a guess. For homes you can actually learn from, explore these dream house designs.

Sources and further reading

• Gulf News: reported construction costs for Antilia.
• ABC News (2010): the Villa Leopolda deal and deposit ruling.
• City AM (2011): the One Hyde Park penthouse sale from Land Registry documents.
• Spear’s: Britain’s most expensive houses, including the 2004 Kensington Palace Gardens sale.
• ABC7 / Associated Press (2011): the Los Altos Hills sale.
• Bisnow (2019): the 220 Central Park South penthouse sale.
• For a wider list of homes currently on the market, see Robb Report’s list of the most expensive houses for sale.