Be the first to know about the biggest and best luxury home sales and listings by signing up for our Mansion Deals email alert. A waterfront estate in Miami’s Coconut Grove area has sold for $106.875 million, setting a record for Miami-Dade County and becoming the first Miami home to cross the nine-figure price threshold, according to the listing agent, Ashley Cusack of Berkshire Hathaway HomeServices EWM Realty.

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