Now you see it, now you don't! The $43.5 million teardown. Say you buy a $43.5 million, 6,000 square foot oceanfront estate on 6.5 shady acres in Sagaponack, Long Island- the country's most expensive zip code! What's the first thing you would do?? If you're the hedge fund billionaire David Tepper, you tear the thing down, to build a bigger and better mansion. The new home is to be twice the size as the original-how nice!