This Connecticut home is 20 times larger than average! Arnold Chase is building this extra large house on Avon Mountain in West Hartford. It is larger than Bill Gates’ home and only slightly smaller than the White House. With over 50,000 square feet of space, it features a 103 seat movie theater (complete with concession stand), game room, music annex, and an observatory. The average US home is a tiny 2,500 square feet in comparison. The Biltmore Mansion in Asheville, NC still reigns supreme with over 174,000 sq. ft.