The largest house in the United States is the Biltmore Estate, which is located in Asheville, North Carolina. It was during the Gilded Age that many of the country’s most expansive homes were constructed; today, these homes are either preserved as historic house museums or repurposed for other purposes. The following is a list of ten of the largest houses in the United States, based on data that is obtainable to the general public regarding square footage.

List Of Top 10 Largest Houses In America 2025

1. Biltmore Estate

Biltmore Estate, which can be found in Asheville, North Carolina, is currently the largest private residence in the United States of America due to its size. The expansive mansion, which was built in the Chateauesque style and was finished in 1895 for George Washington Vanderbilt II, encompasses 178,926 square feet, which is approximately 4 acres. There are a total of 250 rooms on the estate, which is still owned by Vanderbilt’s descendants. There are 35 bedrooms and 43 bathrooms on the property. In modern times, it has become a significant tourist destination and a National Historic Landmark.

2. Oheka Castle

Oheka Castle is a magnificent historic mansion that was constructed in 1919 for the wealthy business associate Otto Hermann Kahn. It is located in West Hills, New York, on the North Shore of Long Island. In addition to being a popular wedding venue, the residence, which was designed in the Chateauesque style and spans 109,000 square feet, is now a hotel.

3. Arden House

Edward Henry Harriman, a railroad magnate, commissioned the construction of Arden House, a magnificent estate located in Harriman, New York, which eventually ended in 1909. With a total floor space of 97,188 square feet, the house is a particularly notable example of the architectural style known as Chateauesque. At the moment, it serves as a venue for conferences.

4. Winterthur

This estate, which can be found in Winterthur, Delaware, was formerly considered to be the residence of Henry Francis du Pont. After being finished in 1932, the Winterthur residence is a Georgian Revival-style house that has expanded to a total area of 96,582 square feet. The Winterthur Museum, Garden, and Library is now in operation, and it is home to one of the most important collections of American decorative arts in the entire country.

5. Shadow Lawn

The Beaux-Arts mansion known as Shadow Lawn was constructed in 1927 and is located in West Long Branch, New Jersey. In the beginning, Hubert T. Parson was the one who constructed the house, which has a total area of 90 thousand square feet. The Great Hall is the name given to this building, which operates as the focal point of Monmouth University on campus.

6. Hearst Castle

The historic estate that is now known as Hearst Castle was formerly known as La Cuesta Encantada. It was constructed between 1919 and 1947 in the city of San Simeon, California. This sprawling estate, which is comprised of multiple buildings and has a combined area of 68,500 square feet, was conceived of by publishing magnate William Randolph Hearst and architect Julia Morgan. Currently, it is a National Historic Landmark as well as a State Park in the state of California.

7. Mar-a-Lago

Mar-a-Lago, located in Palm Beach, Florida, is officially recognized as a National Historic Landmark. It was formerly the residence of the socialite Marjorie Merriweather Post. The house was finished in 1927 and comes with 126 rooms and a total area of 62,500 square feet. At the moment, Donald Trump is the owner of the establishment, which functions as a private club.

8. Versailles

Despite the fact that it is still in the process of being built, the Versailles mansion in Windermere, Florida, is expected to be one of the largest homes in the United States. This house is being constructed for David Siegel and Jackie Siegel, who are his wife. It is anticipated that the final size will be greater than 85,000 square feet, although there are sources that place it as high as 90,000 square feet.

9. Lynnewood Hall

In the town of Elkins Park, Pennsylvania, you’ll find the magnificent Neoclassical Revival mansion known as Lynnewood Hall. The house, which was constructed between the years 1897 and 1899 for the industrialist Peter A. B. Widener, stands at 109,848 square feet in size and contains 110 rooms. At this time, the property is under the ownership of the Lynnewood Hall Preservation Foundation, which is actively engaged in carrying out restoration efforts.

10. Meadow Brook Hall

Matilda Dodge Wilson, the widow of auto pioneer John Dodge, commissioned the construction of Meadow Brook Hall, a mansion in the Tudor Revival style that spans 88,000 square feet and is situated in Rochester Hills, Michigan. The construction took place between 1926 and 1929. In addition to being a museum, it is now a part of Oakland University and contains a total of 110 rooms.