640 S Mashta Drive Key Biscayne, FL 33149
4 Bedroom, 3,620 Sqft, Single Family Residence
AGENT'S REMARKS ABOUT 640 S MASHTA DRIVE
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$16,800,000
| Bedrooms | 4 |
| Bathrooms | 4 Full |
| Living Area | 3,620 SqFt |
| Lot Size | 15,000 SqFt |
| Year Built | 1968 |
| Garage | 2 |
| Private Pool | Yes |
| Subdivision | MASHTA ISLAND |
| MLS# | A11990382 |
| Listing Status | Active |
| Days on Market | 2026-04-02 |
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PROPERTY DETAILS
- Property Type: Single Family Residence
- Approx Living Area: 3,620 SqFt
- Total Bedrooms: 4
- Bathrooms: 4 Full
- Year Built: 1968
- Lot Size: 15,000 SqFt
- Garage Spaces: 2
- Built Description: Other
- Parking Type: Driveway, Garage Door Opener, Guest, Garage, Attached Garage, Attached
- Interior: Entrance Foyer, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Bedroom Layout - Split
- Other Appliances: Dishwasher
- Flooring: Other
- Pool Description: In Ground
- Roof: Barrel
- Age Restrictions: No
- House Faces/Primary View: East
- Construction: Block
- Exterior Description: Other
- Cooling System: Central Air
- Heating: Other
- Utility Information: Cable Available
- Pets Allowed: Yes, D
- County: Miami-Dade
- Area: 2520
- Subdivision: MASHTA ISLAND
- Age Restricted: No
- Annual Property Taxes: $155,651
- Elementary School: Key Biscayne K-8
- Junior High School: Ponce De Leon
- High School: Coral Gables
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MAP LOCATION FOR 640 S MASHTA DRIVE KEY BISCAYNE, FL 33149
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Listing courtesy of DLS International Realty 05.31.2026
If you are interested in this property at 640 S Mashta Drive or any other properties in Key Biscayne please contact The Rucco Group at (561) 737-0366.