The mansion includes eight bedrooms, 14-bathrooms, and a tennis court spread over 9.5 acres and was once shrunken down by previous owners who found the original main home "too grandiose," according to San Francisco outlet SFGate.

The makeover was handled by Michael S. Smith, who also re-designed the White House's Oval Office in 2010.

The Jannard sale soars past the $200 million price tag Jay-Z and Beyoncé shelled out last year for their 40,000-square-foot concrete compound in Malibu.

The music industry power couple's home includes a private beach on 8 oceanfront acres.

Before then, the California record holder was venture capitalist Marc Andreessen, cofounder of the firm Andreessen Horowitz, who purchased a $177 million Malibu home with a private cinema and spa from fashion designer Serge Azria.

No sprawling West Coast mansion, however, has topped the $238 million New York City penthouse purchased by billionaire hedge fund manager Ken Griffin in 2019. The three-floor trophy property is situated on Billionaire's Row at the south edge of Central Park and remains the most expensive real estate transaction in US history.

A French chateau owned by the Rothschild family is currently making a bid to beat them all as the most expensive real estate sale in the world, with a current asking price of $452 million, according to Architectural Digest. The historic home spans 100 rooms, 17 bedroom suites, and a 50-horse stable on a property dating back to the 12th century.