640 S Mashta Dr Key Biscayne FL 33149 MLS #A11990382

640 S Mashta Dr
Key Biscayne, FL, 33149
$16,800,000
4 Beds
4 Baths
3,620 SqFt
0 Acres
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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

Property Details

Price:
$16,800,000
MLS #:
A11990382
Status:
Active
Beds:
4
Baths:
4
Address:
640 S Mashta Dr
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
MASHTA ISLAND
Neighborhood:
mashtaisland
City:
Key Biscayne
Listed Date:
Apr 2, 2026
State:
FL
Finished Sq Ft:
3,620
Total Sq Ft:
4,990
ZIP:
33149
Year Built:
1968
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Schools

Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Coral Gables

Interior

Appliances
Dishwasher
Bathrooms
4 Full Bathrooms
Cooling
Central Air
Flooring
Other
Heating
Other

Exterior

Architectural Style
Attached, Other
Community Features
Public Road
Construction Materials
Concrete Block Construction
Exterior Features
Other
Parking Features
Driveway, Guest
Roof
Barrel Roof

Financial

Tax Year
2025
Taxes
$155,651

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Community

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640 S Mashta Dr
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