This newly built mega mansion (not for sale) is located on Compton Avenue in Haringey, London, UK. Compton Avenue is one of the top 10 most expensive streets in London with an average home value of £8,005,533. The boxy home looks to be in excess of 20,000 square feet and boasts a central atrium. A mansion that was on the existing land was demolished in order to make way for this one. We would love to see more pictures of it, so hopefully it will go up for sale once completed! FYI, the two lots (with existing homes) across the street from this home are currently on the market for a whopping £40,000,000.

*Thanks to HOTR reader Al for the tip