Photo: theonecalifornia/Instagram

Developer Nile Niami once had grandeurs of listing his magnum opus, a 105,000-square-foot mega-mansion known as The One, for upwards of $500 million. Despite hitting the market for $160 million less than originally planned, the palatial estate could still become the most expensive home ever sold in the United States. 

The One holds another record for its sheer size. The quarter-mile-long Bel Air manse is the largest in the world, comprising 21 bedrooms, 42 bathrooms, a 30-vehicle showroom and five swimming pools. Extravagant extras include a four-lane bowling alley, 30-seat movie theater, hair and beauty salon, a 6,000-square-foot principal suite with dual dressing rooms, and a 10,000-square-foot sky deck complete with a putting green.

Envisioned by Irish-born architect Paul McClean, who has designed spec mansions purchased by Jay-Z and Beyoncé, Calvin Klein, and the late Swedish DJ Avicii, The One is characterized by clean lines, water features, neutral colors and unobstructed views. McClean has collaborated with Niami on numerous projects over the last 12 years, from renovations in the Hollywood Hills to new-builds in the Bird Streets.

Photo: theonecalifornia/Instagram

Interior designer Kathryn Rotondi of KFR Design created the lavish yet surprisingly liveable interiors, playing up the enormous scale of the home with oversized art pieces and custom furnishings by Vesta.

Photo: theonecalifornia/Instagram

Niami, a former film producer turned developer, purchased the eight-acre property for $28 million in late 2012, and construction took eight years and 600 laborers to complete.

Photo: theonecalifornia/Instagram

Branden and Rayni Williams of Williams & Williams Estates Group and Aaron Kirman of Compass will share the listing for The One. If it fetches $340 million, the sale will oust Jeff Bezos’ recent purchase of the $165 million Warner Estate in Beverly Hills, currently the priciest single-family transaction in California history. It will also shatter the record for the country’s highest-priced home ever sold, which is held by hedge fund billionaire Ken Griffin, who snapped up a $238 million NYC penthouse in 2019.

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