The Biltmore House is the largest privately owned home in the U.S. at 135,000 square feet. It was built by George Vanderbilt II in the 1890s. The mansion is worth $200-$300 million. If you add in the value of the 125,000 acres of land, the total value is around 1.2 billion dollars.
Today the Biltmore Estate has a worth of two billion seven hundred thousand dollars. It is located in Asheville, North Carolina and it was built from 1889 until 1895. It is known as the largest home in America.