Waterfront 4-Bedroom Residence in Key Biscayne
640 S Mashta Dr, Key Biscayne FL 33149, Key Biscayne, FL 33149
$16,800,000

Key Facts
- Beds
- 4
- Baths
- 4
- Sq Ft
- 3,620
- Lot
- 15,000 sq ft
- Year Built
- 1968
- Waterfront
- ✓
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
Features & Amenities
- Waterfront
- 2-car garage
- Built 1968
- First Floor Entry
- Entrance Foyer
- Pantry
- Split Bedroom
- Vaulted Ceiling(s)
- Walk-In Closet(s)
- Garage Converted
Location
640 S Mashta Dr, Key Biscayne FL 33149, Key Biscayne, FL
View on mapMLS # A11990382 · Listing courtesy of DLS International Realty
Data last updated April 5, 2026
Listing information is provided in part by the IDX program of the MIAMI Association of REALTORS®. Information deemed reliable but not guaranteed. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.