· although the sky-high price tag represented the sunshine states most expensive residential real estate transaction, the anonymous buyer managed to snag something of a discount, given that the. · explore the most expensive house in america with a record-breaking price, luxury features, and exclusive photos of this stunning ultra-luxury mega- mansion. · a 105,000-square-foot megamansion , known as the one, in the bel air section of los angeles listed friday for $295 million, making it the most expensive listing in america. America ’ s billionaire home buyers are branching out. An oceanfront mansion in la jolla, a seaside neighborhood in san diego, has set a record for the county after selling for $ 47 million in an off-market deal. This year wasn’t in manhattan, miami or malibu, but rather naples, on florida’s gulf coast. · when casa encantada, a storied 60-room estate in bel-air, hit the market in june 2023, its $250 million asking price made it the most expensive house for sale in the united states. Rosenstein set the record when he. Case in point, the priciest sale in the u. s. · as of this writing, the record for the most expensive house ever bought in the united states belongs to a hedge fund manager named barry rosenstein.