Single Family Residence

640 S Mashta Dr

Key Biscayne, FL 33149

$16,800,000

Beds: 4
Baths: 4
Sq ft: 3,620
Year built: 1968
Price per sq ft: $4,641

Listing courtesy of Brigitte De Langeron, DLS International Realty

About this home

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

Details

Property

Type: Single Family Residence
Style: Attached
Building: WF/Pool/Ocean Access
Year built: 1968
Lot size: 15,000 sq ft
Building name: MASHTA ISLAND
Subdivision: MASHTA ISLAND
County: Miami-Dade County
Faces: East
View: Bay, Garden
Waterfront: Ocean Access, Ocean Front
Flood zone: AE

Interior

Appliances: Dishwasher
Cooling: Central Air
Features: First Floor Entry, Entrance Foyer, Pantry, Split Bedroom, Vaulted Ceiling(s), Walk-In Closet(s), Garage Converted

Exterior and parking

Pool: In Ground
Parking: Driveway, Guest
Garage spaces: 2
Construction: Concrete Block Construction
Roof: Barrel Roof

Community and fees

Pets: Dogs OK
Annual taxes: $155,651
Terms: All Cash, Conventional

Neighborhood

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The data relating to real estate for sale or lease on this website comes in part from the Internet Data Exchange (IDX) program of MIAMI REALTORS® MLS. Listings are provided by participating brokers.

Information is deemed reliable but is not guaranteed and should be independently verified. It is subject to change and is provided for consumers’ personal, non-commercial use only, to identify properties they may be interested in. Listing last updated September 19, 2026.