Mashta Island Homes for Sale

170 Days on Market

House for Sale

$16,800,000

4 bd · 4 ba · 3,620 sqft

640 S Mashta Dr, Key Biscayne, FL 33149

MASHTA ISLAND

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Matthew Gromadzki

Real Estate Broker

(786) 370-8570

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Live MLS inventory in Mashta Island, Key Biscayne, updated continuously. Florida Lux Real Estate currently tracks 1 active listings here. MLS inventory updated October 12, 2026.