Who rented Sandcastle this summer? One source with knowledge of the deal says it's no one famous nor a company looking to do a big event, just a family willing to fork over $500,000 for their two-week stay. 

Sandcastle is a 31,000-square-foot compound, which features a two-lane bowling alley, a skateboard half-pipe, a rock climbing wall and other amenities to keep the clan entertained.

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Corcoran Group photo

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