This Single Family Residence in MASHTA ISLAND, Key Biscayne is currently offered at $16,800,000 with 4 bedrooms, 4 bathrooms, 3,620 sq ft of living area. Built in 1968, and the current asking price works out to about $4,641 per sq ft, and the MLS currently reports 158 days on market.
Key Property Facts
Property TypeSingle Family Residence
SubdivisionMASHTA ISLAND
DevelopmentMASHTA ISLAND
CountyMiami-Dade
WaterfrontYes
Private PoolYes
Original List Price$16,800,000
MLS IDA11990382
UpdatedMay 31, 2026
About This Property
Welcome to your own slice of paradise! Enjoy breathtaking sunsets from your private dock on this waterfront property boasting 100 feet of direct Biscayne Bay frontage. Ideally located on Mashta Island. Set on a 15,000 SF lot, the home features 5 beds, 5 baths, including 2 bayfront primary suites with stunning views, impact windows and doors throughout. The open-concept layout flows seamlessly from the living and dining areas to the modern kitchen and out to the pool and entertainment patio, with floor-to-ceiling glass doors that open to blend indoor and outdoor living. Tranquil guest suite upstairs offering privacy and views. It also features an oversized 2-car garage, covered parking, and a spacious driveway for guests. Perfect to move in, renovate, or build your dream waterfront estate
What Stands Out
Waterfront property
Private pool
2 garage spaces
Built in 1968
158 days on market
Quick Payment Estimate
What might this home cost each month?
Starting rate:
6.66%
30 year fixed national average
· updated Aug. 27, 2026
Taxes, insurance, flood coverage and PMI are not included here.Rate is editable and is not a lender quote.
Local Real Estate Context
About MASHTA ISLAND and Key Biscayne
The MLS record identifies this property with MASHTA ISLAND in Key Biscayne, Miami-Dade. For detached homes, useful comparisons include lot size, construction age, pool or waterfront features, association rules and the condition of major systems. Because this listing is identified as waterfront, access, shoreline or seawall conditions, insurance exposure and any dock or boating details may also matter to a buyer.
