MASSIVEKEY BISCAYNECORNER LOT DEVELOPMENT OPPORTUNITY ON 3/4 ACRE LOT WITH 120 FT OF WATERFRONTAGE ON EXCLUSIVE MASHTA ISLAND! This Family Estate is Perfect for Water Sport Lovers & Boaters, featuring a Single Well Boat Slip + Dock & Separate Boathouse. Build your Dream Home on a Quiet Harbour w/ over 120 FT of Waterfrontage.6 Bedrooms + 5.5 Bathrooms w/ 6,672 Adj Gross SF on an Oversized 31,458 SF LOT. Formal Living Area boasts Double-Height Ceilings + separate Formal Dining w/ views to the Pool & Harbour, a spacious Kitchen w/ Breakfast Area & Family Room. Covered Terrace features a built-in Bar and an Oversized Pool + Spa. Residence features Long Driveway w/ 2 Car Garage. Key Biscayne is a Family-Friendly Oasis w/ convenient access to nearby Parks and Several Family Activity Spots!