Part 1 Nile Niamis 500 million dollar home goes to market. After more than eight years in planning and construction, the Los Angeles area’s most colossal home is finally ready for its official public debut. Famously known only as “The One,” the mini shopping mall-sized estate straddles one of the highest promontories in Bel Air, spanning about 100,000 square feet of total living space. By comparison, the White House weighs in at just under 55,000 square feet; the 115-room Hearst Castle makes do with a modest 68,500. It’s difficult to grasp the sheer size of “The One” by just looking at the pictures or numbers, although it’s clearly massive. To appreciate the project’s full scale, go for a walk. The mansion stretches for a full quarter-mile along Stradella Road in Bel Air, looming over the street like a big white alien spacecraft. As for the property’s main driveway, set on quiet cul-de-sac known as Airole Way, it’s long and wide enough to put most public roads to shame.