LOS ANGELES -- A 50,000-square-foot Los Angeles mansion with a dozen bedrooms has reportedly sold for $102 million, a Southern California record, but it's unclear who bought it.

Citing the grant deed, the Los Angeles Times reported Monday (http://lat.ms/1omnf60 ) that taxes for the opulent estate on 4.9 acres in Holmby Hills have been mailed to the Santa Monica headquarters of the Milken Institute, the think tank founded by financier Michael Milken.

The buyer is listed as FDL Property, a limited-liability company registered in Delaware and represented by the law firm of Maron & Sandler, which is based in the building that houses the Milken Institute.

But Milken spokesman Geoffrey Moore said neither Milken nor the Milken Institute is the purchaser.

Socialite Suzanne Saperstein built the trophy home, called Fleur de Lys, a dozen years ago with her then-husband, Metro Networks founder David Saperstein. They have since divorced, and she first listed the property in 2007 for $125 million.

She took it on and off the market several times, the Times said, almost selling it at one point to British heiress Petra Ecclestone, who ended up buying Candy Spelling's nearby spread for $85 million.

Just inside the front door is a two-story entry hall with a marble floor topped by a gold-leaf paneled ceiling. A pair of staircases lead upstairs, and a doorway flanked by columns looks out to the backyard and gardens said to be inspired by Versailles.

Interior spaces include a ballroom for 500 guests, a two-story wood-paneled library, a movie theater, a music room, a dance studio, a beauty salon, 12 bedrooms and 15 bathrooms.

It is the most expensive residential transaction ever recorded in Southern California, the newspaper said. The sale beats the long-held local record established in 2000 when Dole Food Co. billionaire David Murdock sold a Bel-Air property to financial executive Gary Winnick in a $94-million deal.

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Information from: Los Angeles Times, http://www.latimes.com