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TOP 10 Biggest House in the World 2025: Location, Features, and More

Post by: SourceVietnam

Written by Ethan Minh

Reading Time: 13 minutes

January 3, 2025

Discover the world’s most extravagant homes that will leave you in awe! From the Istana Nurul Iman Palace in Brunei to Antilia in India, Safra Mansion in Brazil, Witanhurst in London, and many more, each mansion boasts incredible stories and unique features. Get ready to explore the biggest house in the world and more. Dive into this article to satisfy your curiosity!

TOP 10 biggest houses in the world

Place Location Area (sq. ft) Estimated Value
Istana Nurul Iman Palace Brunei 2,152,782 $1.5 billion
Buckingham Palace London, UK 828,818 $4.9 billion
Antilia Mumbai, India 400,000 $2 billion
Biltmore Estate Asheville, North Carolina, USA 175,000 $157 million
Fair Field Sagaponack, New York, USA 110,000 $248 million
The One Bel Air, California, USA 105,000 $500 million
Witanhurst London, UK 90,000 $450 million
Villa Leopolda Villefranche-sur-Mer, French Riviera 80,000 $750 million
Gemini Mansion Manalapan, Palm Beach, Florida, USA 62,200 $195 million
The Odeon Tower Penthouse Monaco 35,000 $400 million

Some of the world’s biggest mansions are so immense that they defy our imagination of luxury and opulence, often transporting us to a fantasy realm. Beyond their sheer size and grandeur, these homes symbolize cultural significance and architectural mastery. The history of the biggest houses in the world is also fascinating because they have been part of history and have seen many historical changes.

TOP 10 Biggest House in the World 2025: Location, Features, and More

Based on current information, this top picture of the biggest in the world house highlights these incredible residences and will give you an overview of them, though it may change as even more extravagant homes are built. Explore this comprehensive guide for fascinating details about the world’s biggest house and others.

Istana Nurul Iman Palace

  • Location: Brunei
  • Area: 2,152,782 square feet
  • Estimated Value: $1.5 billion

This is not just an ordinary house; it’s the largest residential palace in the world. This colossal royal residence is the official home of Hassanal Bolkiah, the 29th Sultan of Brunei.

TOP 10 Biggest House in the World 2025: Location, Features, and More
Istana Nurul Iman Palace in Brunei

Istana Nurul Iman, meaning “Palace of the Light of Faith”, the location of the world’s biggest house, is situated on a low hill in the capital, Bandar Seri Begawan, overlooking the Brunei River. It serves as the royal family’s residence and the government seat and is also the world’s biggest and most expensive house. The palace stands as a symbol of the Sultan’s authority and the nation’s prosperity.

Completed in 1984 at $1.4 billion, the palace occupies 200,000 square meters. It boasts 1,788 rooms, including 257 bedrooms, five opulent swimming pools, and a banquet hall accommodating up to 5,000 guests. The interior is adorned with the utmost luxury, featuring gold-plated domes.

The palace is a marvel of opulence with 51,000 light bulbs, 564 chandeliers, 44 stairwells, and 18 elevators. Even the furniture and dining ware are made of gold, underscoring the palace’s extraordinary grandeur.

Buckingham Palace

  • Location: London, UK
  • Area: 828,818 square feet (77,000 square meters)
  • Estimated Value: $4.9 billion

Buckingham Palace built in 1703, is located in the city of Westminster, London, UK. It is not a private house but the property of the British royal family. Considered the symbol and home of the British monarchy, the palace is also a major tourist attraction.

TOP 10 Biggest House in the World 2025: Location, Features, and More
Buckingham Palace in the UK is the biggest house in the world

Originally built in 1703 as a London townhouse by John Sheffield, the first Duke of Buckingham and Normandy, the palace was acquired by King George III in 1761. It officially became the London residence of the British royal family in 1837.

Owned by the Crown, the palace spans an impressive 77,000 square meters (828,818 square footage) and comprises 775 rooms, 19 staterooms, 52 guest and royal bedrooms, 78 bathrooms, 188 staff rooms, and 92 offices. As the site of significant royal events, it has become an iconic symbol of the monarchy and the United Kingdom.

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Antilia

  • Location: Mumbai, India
  • Area: 400,000 square feet (37,161 square meters)
  • Estimated Value: $2 billion

This is considered the world’s most expensive residence, owned by Indian billionaire Mukesh Ambani. Built on a sprawling 37,161 square meter plot, the 27-story Antilia is estimated to be worth $2 billion.

Located on Altamount Road, Mumbai, one of the world’s biggest houses and the most expensive streets, this private residence boasts a floor area of 4,532 square meters, making it second only to Buckingham Palace in terms of property value.

TOP 10 Biggest House in the World 2025: Location, Features, and More
The Antilia in India

Owned by the chairman of Reliance Industries, India’s largest private sector company, Antilia is a testament to opulence. The top three floors house helipads, while the interior features a private temple, ballroom, cinema, snow room, spa, yoga studio, and numerous other amenities.

The mansion requires a staff of 600 and has six floors dedicated to a collection of 168 luxury cars. Despite being 27 stories tall, the double-height ceilings make it as high as a 60-story building. Engineered to withstand an 8.0 magnitude earthquake, Antilia is a marvel of modern architecture and engineering.

Biltmore Estate

  • Location: Asheville, North Carolina, USA
  • Area: 175,000 square feet (16,258 square meters)
  • Estimated Value: $157 million

Located in Asheville, North Carolina, Biltmore Estate is the largest privately-owned home in the United States, spanning over 16 hectares. This historic estate, over 130 years old, was built between 1889 and 1895 by George Vanderbilt II. At the time, the Vanderbilts were one of America’s wealthiest families, having amassed a vast fortune from railroads and shipping.

TOP 10 Biggest House in the World 2025: Location, Features, and More
Biltmore Estate in the USA

Modeled after European castles, this mansion is often called “The American Castle.” With 250 rooms, it exudes an old-world charm, featuring a seven-story ballroom, a library housing over 10,000 books, and various other amenities. Having undergone many historical phases, the mansion now bears the marks of time and showcases a distinct classical architectural style.

The interior is adorned with exquisitely crafted furnishings, reflecting the building’s opulence. The meticulously designed landscape surrounding the mansion offers breathtaking views. Today, the estate is open to the public and has become a popular tourist destination.

Fair Field Pond

  • Location: Sagaponack, New York State, USA
  • Area: 110,000 square feet (10,219 square meters)
  • Estimated Value: $248 million

Situated in the center of The Hamptons, this vast estate is a symbol of luxury. With a sprawling 110,000 square feet, the property offers many opulent features.

TOP 10 Biggest House in the World 2025: Location, Features, and More
The Fair Field Pond in the USA

This residence boasts 29 bedrooms and 39 bathrooms, along with a range of amenities, including a swimming pool, basketball court, and bowling alley. Designed in the Italian Renaissance, the mansion exudes opulence and grandeur, featuring exquisite materials and meticulous attention to detail.

Owned by renowned American investor and businessman Ira Rennert, it is one of the most private and heavily secured residential properties in the United States. This estate has become synonymous with luxury living and is considered one of the most expensive private homes in the country.

The One

  • Location: Bel Air, California, USA
  • Area: 105,000 square feet (9,755 square meters)
  • Estimated Value: $500 million

Perched atop the Bel Air Crest in Los Angeles, this mansion offers breathtaking panoramic views of the Pacific Ocean. Spanning an impressive 9,755 square meters, this one of the largest estates was eight years in the making. Due to new city ordinances restricting the construction of large-scale residences, this property is truly unique, aptly named “The One”.

TOP 10 Biggest House in the World 2025: Location, Features, and More
The One Villa in Los Angeles, USA

The villa’s unique and innovative architecture features an elongated triangular shape with numerous curves. The interior boasts a 50-car garage for luxury vehicles, a private helipad, five elevators, three kitchens, 42 bathrooms, and 21 bedrooms, including a 105,000-square-foot master suite.

Witanhurst

  • Location: London, UK
  • Area: 90,000 square feet (8,361 square meters)
  • Estimated Value: $450 million

This is the second-largest house in the United Kingdom, surpassed only by Buckingham Palace. It is a prime example of Queen Anne architecture in Highgate, characterized by its bay windows.

TOP 10 Biggest House in the World 2025: Location, Features, and More
Witanhurst in London

Spanning 2 hectares and boasting a 90,000 square foot interior, this mansion features 65 rooms, 25 bedrooms, a cinema, and numerous other amenities. The property exudes an air of regal grandeur befitting a private residence of such stature. Once a gathering place for the aristocracy, it was acquired by a Russian businessman in 2008 and underwent a meticulous restoration.

The interior is adorned with exquisite gold leaf detailing, reflecting the opulence and sophistication of a bygone era. As one of the oldest mansions in the area, it has both historical and commercial value, with its classic architecture and opulent interiors.

Villa Leopolda

  • Location: Villefranche-sur-Mer, French Riviera
  • Area: 80,000 square feet (7,432 square meters)
  • Estimated Value: $750 million

This opulent home is in Villefranche-sur-Mer on the French Riviera, one of Earth’s most affluent and glamorous regions. The area is renowned for its bustling yacht harbors and charming villages serving as homes for the wealthy elite, artists, and business magnates.

TOP 10 Biggest House in the World 2025: Location, Features, and More
The Villa Leopolda on French Riviera is 1st of the biggest houses in the world.

This villa has passed through many different hands, most notably that of the Belgian royal family. Situated on an expansive 80,000-square-meter plot, it boasts 19 bedrooms, 14 bathrooms, and numerous other amenities, including dining rooms and kitchens.

As one of the world’s most valuable properties, it has a rich history and has undergone various transformations. Due to its high level of security, little is known about its inner workings. Nonetheless, it remains an iconic symbol of opulence and boasts a unique architectural design.

The Gemini Mansion

  • Location: Manalapan, Palm Beach, Florida, USA
  • Area: 62,200 square feet (5,777 square meters)
  • Estimated Value: $195 million

The Gemini Mansion is a prominent luxury property located in Manalapan, Florida, near Palm Beach. Manalapan is an exclusive enclave situated between Palm Beach and Boca Raton. Renowned for its luxurious estates and privacy, it is a sought-after destination for the ultra-wealthy.

TOP 10 Biggest House in the World 2025: Location, Features, and More
The Gemini Mansion in Florida

Renowned for its grandeur and opulent features, it represents some of the most luxurious real estate in the United States. It is a stunning beachfront estate encompassing approximately 62,200 square feet of land and 5,777 square feet of living space. In fact, Gemini was named after the two different shorelines and was designed in the 1940s.

The main building boasts 33 bedrooms and a sports complex, including tennis courts, a golf practice facility, and a children’s playground. Unlike many other mansions, the house features Mediterranean architecture, embracing a natural seaside vibe and offering comfort and relaxation to its inhabitants. It is also one of the world’s most commercially valuable unique properties.

The Odeon Tower Penthouse

  • Location: Monaco
  • Area: 35,000 square feet (3,252 square meters)
  • Estimated Value: $400 million

This is one of the world’s most luxurious penthouses, serving not merely as a residence but as a symbol of wealth, power, and prestige. Located atop the Odeon Tower, one of Monaco’s tallest buildings, the penthouse offers breathtaking views of the Mediterranean Sea.

The Odeon Tower Penthouse in Monaco
The Odeon Tower Penthouse in Monaco is the modern biggest house in the world.

Spanning an impressive 35,000 square feet – nearly half the size of a football field – this penthouse boasts meticulously designed, high-end interiors. Complete with a swimming pool, gym, cinema, and spa, it offers unparalleled luxury. It has garnered significant global attention, recognized as one of the world’s most expensive residences.

This state-of-the-art residence offers many amenities, such as a library, billiard room, game room, beauty salon, spa, bowling alley, and a private swimming pool. Its advanced technological systems set this villa apart from others on this list. However, the provided data is for comparative purposes only and may vary over time.

Common architectural styles among the biggest houses in the world

Overall, there is not much diversity among the world’s largest homes. A common thread among these properties is a clear dichotomy between classic and contemporary design.

But the biggest house in the world inside has what?

While architectural styles may vary widely, these homes generally exude classic elegance or modern opulence. Some of the most prevalent architectural marvel styles found in these mega-mansions include:

  • Classical and Neoclassical: These styles are characterized by their inspiration from ancient Greek and Roman architecture. Often chosen for ultra-luxury homes, they evoke a timeless elegance and a sense of wealth and power.
  • Mediterranean: This style evokes the charming beauty of European coastal living, featuring red tile roofs, arched doorways, and ornate details. It creates a luxurious and relaxed living space.
  • Modern: Modern style prioritizes functionality, modernity, and minimalism. It emphasizes maximizing natural light and appeals to those seeking a sophisticated and contemporary living space.
  • French Chateau: Inspired by the grand chateau of France, this style is characterized by ornate details, high ceilings, and a strong sense of history. It conveys a sense of opulence, elegance, and grandeur.
  • Georgian: Known for its symmetry, brick or stone facades, and Palladian windows, this style offers a classic and refined aesthetic, providing a traditional yet luxurious feel.

Get inspired by the design of luxurious houses for your apartment

Owning an apartment like the villas on the list is almost impossible. However, you can build and optimize your own living space in your own way and refer to the above styles. Currently, many units are providing a variety of apartment buying/renting services that you can refer to, such as Sotheby’s International Realty, Christie’s International Real Estate, Zillow, Realtor, and Architectural Digest.

Get inspired by the design of luxurious houses for your apartment

After getting an apartment to your liking, you can decorate it with modern, Mediterranean, or classic European-style interiors. You can purchase it at furniture stores or online platforms. Currently, some platforms that connect directly with home furnishings wholesale distributors would be an optimal choice.

Read more: Scandinavian Style House: A Guide to Minimalist Nordic Living

Notably, SourceVietNam.com is a platform that connects home decor wholesale distributors, allowing you to buy wholesale and retail at the best prices. Here, you can find home decor vendors wholesale with full transparent information about products for your selection. So, you can easily create a home that reflects your style and brings you comfort by drawing inspiration from the designs of the world’s grandest houses.

Conclusion

Above is information about the TOP 10 biggest house in the world, each showcasing its unique style and beauty. These magnificent residences can serve as endless inspiration for those looking to decorate their own homes. If you’re searching for high-quality home furnishings at the best prices, visit SourceVietnam.com – The most convenient and effective platform connecting wholesale suppliers for home decor.

FAQs

What is the biggest house in the world?

The definition of the “largest house in the world” is subject to various criteria, including whether it is a private residence or a palace, as well as its overall size and scale. Currently, Istana Nurul Iman in Brunei holds the title of the world’s largest house.

Where is the biggest house in the world?

The address of the biggest house in the world is the Istana Nurul Iman Palace, located in Brunei. It’s the official residence of the Sultan of Brunei and holds the Guinness World Record for the largest residential palace.

Who has the biggest house in the world?

When this article was written, the Sultan of Brunei, Hassanal Bolkiah, held the title of the world’s largest house owner.

How much does the biggest house in the world cost?

It is difficult to accurately determine the value of the world’s largest house. However, some sources estimate that Istana Nurul Iman is worth approximately $1.4 billion.

How big is the biggest house in the world?

According to current information, Istana Nurul Iman spans approximately 2.15 million square feet, encompassing 1,788 rooms and 257 bathrooms. It also boasts a banquet hall accommodating up to 5,000 guests, a mosque holding 1,500 worshippers, and a parking garage for 110 vehicles. Additional amenities include a swimming pool, an air-conditioned stable for the Sultan’s 200 polo ponies, and a private helipad.

4.8/5 (102 vote)
Ethan Minh

Content Strategist

Before taking on the position of Content Strategist at MediaStep, Ethan Minh graduated with honors from New York University and accumulated more than 8 years of experience working at multinational companies, corporations, and marketing agencies such as Omnicom Group and The Interpublic Group of Companies (IPG). He has developed content across all platforms to implement promotional strategies for businesses.

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