
$16,800,000
Single Family ResidenceActive640 S Mashta Dr, Key Biscayne FL 33149
MLS #A11990382About 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
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About Key Biscayne
Key Biscayne is a barrier island community just a bridge ride from Brickell, offering an island lifestyle wrapped around Crandon Park, Cape Florida State Park, and the Crandon Golf Course. The village is known for its safety, top-rated schools, and walkable pace, with residents ranging from young families to international buyers seeking secondary residences. Limited inventory and tight geography keep prices premium relative to mainland Miami.
Property Details
Property Type
Single Family Residence
Year Built
1968
Living Area
3,620 sq ft
Lot Size
15,000 sq ft
Bedrooms
4
Bathrooms
4
Garage
2 Spaces
Pool
No
Waterfront
Yes
Cooling
Central Air
Heating
Other
Roof Type
Barrel Roof
Flooring
Other
Construction
Concrete Block Construction
Style
Attached, Other
HOA Fee
None
Annual Taxes
$155,651 (2025)
Days on Market
3
MLS #
A11990382
Features & Amenities
Interior
Appliances
Exterior
Community
Other
Nearby Schools
Assigned public schools pulled from Miami-Dade County Public Schools’s official attendance-boundary data. Verify current boundaries with MDCPS before buying — zones can change year to year.
School data source: Miami-Dade County Open Data Hub
Similar Homes in Key Biscayne
Location
City
Key Biscayne
State
FL
ZIP Code
33149
County
Miami-Dade County
Listing provided by Brigitte De Langeron at DLS International Realty. Data from Miami Association of REALTORS®. All information deemed reliable but not guaranteed. Listing #A11990382.