SHADOW MARKET: Palm Beach's secret underground real estate market hides mega-mansions worth up to $300 million that never appear on public listings.
A top broker says 99% of agents don't even know these properties exist — and that within just a few blocks of Mar-a-Lago, unlisted homes are quietly available for $17 million, $97 million, $175 million and $300 million.
With only about 58 single-family homes publicly listed on the entire island, ultra-wealthy buyers are locked in fierce off-market battles where deals take months and rival brokers scramble to poach sellers the moment rumors surface.
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