$500M California listing may be most expensive home in America

100,000-square-foot Bel Air home includes 18 bedrooms, 25 bathrooms

A 100,000-square-foot home in Bel Air, California, that's said to be the most expensive home in the U.S. at $500 million will soon hit the market.

Nicknamed "The One," the opulent hilltop home sits on a gated 4-acre property. It includes 18 bedrooms and 25 bathrooms, according to the developer, Skyline Development. It's being listed with Branden and Rayni Williams of Williams and Williams.

The house's over-the-top amenities include a theater with more seats than the place that plays indie flicks, multiple swimming pools and water features, a gym that looks like it requires a membership, a library that has both floor-to-ceiling windows and built-in bookshelves, a spa with a steam room and Jacuzzi and a whole nightclub. A 20-car garage means no one needs to carpool to the house. There's also a tennis court, wine cellar, game room, billiards room, pool house and a three-bedroom guest house with its own spa and pool.

The $500 million home known as "The One." (Credit: Michael Leonard / The Society Group)

LORI LOUGHLIN, MOSSIMO GIANNULLI SELLING HOME FOR $28M

A promotional video for the property also shows a multi-lane bowling alley, waterfalls, multiple fireplaces, a large cigar humidor, and lots of floor-to-ceiling windows and outdoor living spaces to bask in the 360-degree views that include downtown Los Angeles, mountains and the ocean. Jellyfish-filled aquariums shown lining the walls of one bedroom have reportedly been nixed, however.

With "The One" priced at $500 million, it may test how high the luxury real estate market can go.

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The $500 million home known as "The One." (Credit: Michael Leonard / The Society Group)

MALIBU MANSION WHERE CELEBS LIKE DRAKE STAY LISTED FOR $19M

Los Angeles County saw its highest home price record broken twice in 2019, with Aaron Spelling's former mansion selling for just shy of $120 million and mansion from "The Beverly Hillbillies" selling for $150 million, the Los Angeles Times reported. And at least three more properties are priced at $150 million or more.

But there do appear to be limits as to what buyers will pay. A 157-acre property known as "The Mountain" because it occupies the highest point in Beverly Hills and Los Angeles that had once been listed for $1 billion sold for just $100,000 at a foreclosure auction.

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