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Top 10 Largest Houses in the World: Location, Owner, No. of Rooms and Floors in 2025
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When we consider the largest house in the world, we enter a realm of architectural marvels and unimaginable luxury. The term largest in this context almost always refers to the total interior floor space, measured in square feet or square meters. This distinction is important as some properties may occupy vast lands but have smaller living quarters. The current titleholder for the biggest residential palace is Istana Nurul Iman, the official residence of the Sultan of Brunei. The fascination with the world's biggest houses stems from their sheer scale, opulent amenities, and the powerful individuals who own them.
List of 10 Largest Houses in the World - Quick Info
Here is a brief look at the most colossal residences across the globe. These structures are not just homes but monuments of wealth, power, and architectural ambition that redefine residential living.
House Name | Location | Size (sq. ft.) | Acres |
Istana Nurul Iman | Bandar Seri Begawan, Brunei | 2,152,782 | 49 Acres |
Buckingham Palace | London, United Kingdom | 828,821 | 40 Acres |
Antilia | Mumbai, India | 400,000 | 1.1 Acres |
Biltmore Estate | Asheville, North Carolina, USA | 178,926 | 8,000 Acres |
Safra Mansion | São Paulo, Brazil | 117,000 | 2.8 Acres |
The One | Bel Air, California, USA | 105,000 | 3.8 Acres |
Witanhurst | London, United Kingdom | 90,000 | 5 Acres |
Villa Leopolda | Villefranche-sur-Mer, France | 80,000 | 18 Acres |
Fairfield Pond | Sagaponack, New York, USA | 62,000 | 63 Acres |
Gemini Mansion | Manalapan, Florida, USA | 62,200 | 15.65 Acres |
10 Largest Houses in the World - Detailed Information
Let's go deeper into the specifics of these architectural giants, exploring what makes each one a unique and the largest mansion in the world in its own right.
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1. Istana Nurul Iman, Bandar Seri Begawan, Brunei

This palace, whose name translates to 'The Light of Faith Palace,' is undisputedly the largest home in the world. It serves as the official residence of the Sultan of Brunei, Hassanal Bolkiah, and the seat of the Brunei government. Its immense size symbolises the nation's wealth and the monarch's stature.
Quick Facts about Istana Nurul Iman
Category | Details |
House Name | Istana Nurul Iman |
Owner | Hassanal Bolkiah (Sultan of Brunei) |
Location | Bandar Seri Begawan, Brunei |
Size (sq ft) & Acre | 2,152,782 sq ft on 49 acres |
Year Built | 1984 |
Rooms | 1,788 |
Floors | Varies across wings |
Public Access | Limited access during the annual Hari Raya Aidilfitri festival |
Estimate Valuation | Over ₹12,450 Crores (Approx. $1.5 Billion) |
Unknown Fact | The palace's dome is gilded with 22-carat gold. |
2. Buckingham Palace, London, United Kingdom

Buckingham Palace is one of the grandest buildings on the planet. It serves as the London residence and administrative headquarters of the monarch of the United Kingdom. Though not a purely private residence, its scale is so vast that it consistently ranks among the world's biggest houses.
Quick Facts about Buckingham Palace
Category | Details |
House Name | Buckingham Palace |
Owner | The Crown Estate |
Location | London, United Kingdom |
Size (sq ft) & Acre | 8,28,821 sq ft on 40 acres |
Year Built | 1703 (as Buckingham House) |
Rooms | 775 |
Floors | 5 |
Public Access | Yes, the State Rooms are open to the public during the summer. |
Estimate Valuation | Approximately ₹40,670 Crores (Approx. $4.9 Billion) |
Unknown Fact | The palace has its own post office, cinema, and police station. |
3. Antilia, Mumbai, India

This modern architectural marvel is a private skyscraper home in the heart of Mumbai. Owned by Indian billionaire Mukesh Ambani, Antilia is the world's most expensive private residence to be built from the ground up, making it a candidate for the world's biggest and most expensive house.
Quick Facts about Antilia
Category | Details |
House Name | Antilia |
Owner | Mukesh Ambani |
Location | Mumbai, India |
Size (sq ft) & Acre | 400,000 sq ft on 1.1 acres |
Year Built | 2010 |
Rooms | Not publicly specified, but includes numerous lounges and suites |
Floors | 27 |
Public Access | No |
Estimate Valuation | Between ₹8,300 Crores and ₹16,600 Crores (Approx. $1-2 Billion) |
Unknown Fact | The structure is engineered to withstand a magnitude 8 earthquake. |
4. Biltmore Estate, Asheville, North Carolina, USA

The Biltmore Estate holds the title of the largest private residence in the world within the United States. Built for George Washington Vanderbilt II, this Châteauesque-style mansion is a historic landmark that showcases the opulence of the Gilded Age and stands as the largest house ever built in America.
Quick Facts about Biltmore Estate
Category | Details |
House Name | Biltmore Estate |
Owner | The Biltmore Company (descendants of the Vanderbilt family) |
Location | Asheville, North Carolina, USA |
Size (sq ft) & Acre | 178,926 sq ft on 8,000 acres |
Year Built | 1895 |
Rooms | 250 |
Floors | 4 |
Public Access | Yes, it operates as a major tourist attraction. |
Estimate Valuation | House estimated at ₹1,300 Crores (Approx. $157 Million); estate valued much higher. |
Unknown Fact | During World War II, the estate secretly stored priceless artworks from the National Gallery of Art. |
5. Safra Mansion, São Paulo, Brazil

Shrouded in secrecy, the Safra Mansion is a colossal private residence in one of São Paulo's most exclusive neighbourhoods. Owned by the prominent Safra banking family, high walls protect this sprawling home, and very few details or photographs are publicly available, adding to its mystique.
Quick Facts about Safra Mansion
Category | Details |
House Name | Safra Mansion |
Owner | The Safra Family |
Location | São Paulo, Brazil |
Size (sq ft) & Acre | 117,000 sq ft on 2.8 acres |
Year Built | Mid-2000s |
Rooms | Reportedly over 130 |
Floors | Multiple wings with varying floors |
Public Access | No |
Estimate Valuation | Not publicly disclosed |
Unknown Fact | The mansion is so large that it has two swimming pools, one indoor and one outdoor. |
6. The One, Bel Air, California, USA

Marketed as the biggest mansion on earth upon its completion, "The One" is a modern mega-mansion with breathtaking views of Los Angeles. This property was designed to be the ultimate entertainment hub, featuring amenities that rival a luxury resort. It has a notable history of financial troubles and auctions.
Quick Facts about The One
Category | Details |
House Name | The One |
Owner | Acquired by Richard Saghian in a bankruptcy auction |
Location | Bel Air, California, USA |
Size (sq ft) & Acre | 105,000 sq ft on 3.8 acres |
Year Built | 2021 |
Rooms | 21 bedrooms, 42 bathrooms |
Floors | 3 |
Public Access | No |
Estimate Valuation | Sold for ₹1,170 Crores (Approx. $141 Million) at auction in 2022. |
Unknown Fact | The home includes a 10,000-bottle wine cellar and a 30-car garage with two display turntables. |
7. Witanhurst, London, United Kingdom

The second-largest private residence in London after Buckingham Palace, Witanhurst is a Grade II-listed Georgian-style mansion. Its ownership was a mystery for many years, but it is now believed to belong to Russian billionaire Andrey Guryev, who has undertaken extensive renovations.
Quick Facts about Witanhurst
Category | Details |
House Name | Witanhurst |
Owner | Andrey Guryev |
Location | London, United Kingdom |
Size (sq ft) & Acre | 90,000 sq ft on 5 acres |
Year Built | 1920 |
Rooms | 65 (25 are bedrooms) |
Floors | 3, with a vast subterranean expansion |
Public Access | No |
Estimate Valuation | Approximately ₹3,735 Crores (Approx. $450 Million) |
Unknown Fact | A massive two-level basement was added, featuring a 70-foot swimming pool, a cinema, and a spa. |
8. Villa Leopolda, Villefranche-sur-Mer, France

Villa Leopolda is a historic estate with a royal past situated on the glamorous French Riviera. Once owned by King Leopold II of Belgium, it is a landmark property known for its stunning terraced gardens and panoramic sea views. Its history and location make it the largest estate in the world.
Quick Facts about Villa Leopolda
Category | Details |
House Name | Villa Leopolda |
Owner | Previously owned by Lily Safra |
Location | Villefranche-sur-Mer, France |
Size (sq ft) & Acre | 80,000 sq ft on 18 acres |
Year Built | 1931 |
Rooms | 19 bedrooms |
Floors | Multiple levels are built into the hillside |
Public Access | No |
Estimate Valuation | Valued at around ₹6,225 Crores (Approx. $750 Million) in 2008 |
Unknown Fact | The villa was used as a filming location for Alfred Hitchcock's 1955 movie, To Catch a Thief. |
9. Fairfield Pond, Sagaponack, New York, USA

The primary residence of American investor Ira Rennert, Fairfield Pond is a massive beachfront compound in the Hamptons. The sheer size of the complex and its list of amenities caused controversy during its construction, but it was established as one of America's biggest houses in the world.
Quick Facts about Fairfield Pond
Category | Details |
House Name | Fairfield Pond |
Owner | Ira Rennert |
Location | Sagaponack, New York, USA |
Size (sq ft) & Acre | 62,000 sq ft (main house), on 63 acres |
Year Built | Late 1990s |
Rooms | 29 bedrooms, 39 bathrooms |
Floors | 3 |
Public Access | No |
Estimate Valuation | Approximately ₹2,058 Crores (Approx. $248 Million) |
Unknown Fact | The property has its 164-seat theatre and a private power plant to service the estate. |
10. Gemini Mansion, Manalapan, Florida, USA

This incredible tropical compound offers unparalleled privacy, with frontage on the Atlantic Ocean and the Intracoastal Waterway. A series of tunnels connects the property, including a main residence, two four-bedroom cottages, and several other structures, making it a truly unique estate.
Quick Facts about Gemini Mansion
Category | Details |
House Name | Gemini |
Owner | Steven Schonfeld |
Location | Manalapan, Florida, USA |
Size (sq ft) & Acre | 62,200 sq ft (main residence) on 15.65 acres |
Year Built | 1940s (substantially rebuilt) |
Rooms | 33 bedrooms |
Floors | Varies |
Public Access | No |
Estimate Valuation | Previously listed for ₹1,618 Crores (Approx. $195 Million); sold for a lower undisclosed amount. |
Unknown Fact | A series of air-conditioned tunnels run beneath the property, including one that goes under the main road. |
Key Features of the World’s Largest House
The largest house in the world, Istana Nurul Iman, is equipped with features that are as grand as its size. Its facilities are designed to support a royal family and a functioning government.
- Immense Residential Quarters: The palace contains 1,788 rooms, including 257 bathrooms, providing ample space for the royal family, guests, and staff.
- Governmental Functions: It houses the Prime Minister's Office and serves as the seat of Brunei's government.
- Religious Centre: A grand mosque within the palace can accommodate up to 1,500 worshippers.
- Entertainment on a Grand Scale: A banquet hall can host up to 5,000 guests and is suitable for major state functions and celebrations.
- Equestrian Facilities: The palace includes five swimming pools and air-conditioned stables for the Sultan’s 200 polo ponies.
- Automotive Collection: A massive underground garage has space for several hundred Sultan's prized automobiles.
- Opulent Materials: Designed by Leandro V. Locsin, the architecture incorporates gold, marble, and fine woods throughout, reflecting its royal status.
Your Dream Home Awaits with NoBroker
While the grandeur of the largest house in the world is awe-inspiring, creating a home that reflects your taste and luxury is entirely within reach. This is where NoBroker’s interior design services can make a difference. Our team of expert designers collaborates with you to craft personalised spaces that match your vision and lifestyle. We manage everything from the initial concept to the final execution, ensuring high-quality materials and transparent pricing. Let us help you build your version of a dream home that is perfectly tailored to you.
Frequently Asked Questions
Ans: The largest house in the world is Istana Nurul Iman, located in Bandar Seri Begawan, the capital of Brunei. It boasts an astonishing 2,152,782 square feet of floor space.
Ans: The world's biggest house, Istana Nurul Iman, has a total of 1,788 rooms, which include 257 bathrooms, a banquet hall, and a mosque.
Ans: The largest residential house, Istana Nurul Iman, is owned by its primary resident, Hassanal Bolkiah, the 29th and current Sultan and Yang Di-Pertuan of Brunei.
Ans: No, Antilia is not bigger than Istana Nurul Iman. While Antilia is incredibly large at 400,000 square feet, Istana Nurul Iman is more than five times larger, with a floor area of over 2.15 million square feet.
Ans: While Buckingham Palace is often valued as the most expensive residence (estimated at approximately ₹40,670 Crores), it is technically owned by the Crown. The most expensive purely private residence is often considered to be Antilia in Mumbai, valued at between ₹8,300 and ₹16,600 Crores.
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