Builder Says $500 mil Mansion Should be Seen As a Bargain

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The Making of the Most Expensive Mansion in History

On a hilltop in Bel Air, a 100,000-square-foot gigamansion is under construction, for no one in particular. The asking price—$500 million—would shatter records, but, as ridiculous as it sounds, in L.A.'s unbridled real-estate bubble, this house could be billed as a bargain.High above Bel Air, Nile Niami is looking down on the