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$16,800,000
Monthly Est:$83,620
4 Beds
4 Baths4 full baths
3,620sqft
640 S Mashta Dr, Key Biscayne, FL 33149
$16,800,000
$83,620/moEst:
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Single Family Residence
Built in 1968
$-- HOA
14,810.4 sqft lot
$4,641/sq.ft
Description
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
- Houzeo last checked: 3 minutes ago
- Listing updated: October 31, 2026 at 2:47 am
- Listing Provided by: Brigitte De Langeron (305) 244-7493 DRE #0545936 | DLS International Realty (305) 459-3875
- Source: Beaches MLS-FL | MLS#: A11990382
Property Details
Status
Active
Type
Single Family Residence
No. of Stories
-
County
City
Neighborhood
--
Year Built
1968
HOA Fees
-
Finished Area
3,620 sqft
Lot Size
14,810.4 sqft lot
Basement Area
- sqft
MLS Name
Beaches MLS
MLS Number
A11990382
MLS Status
Active
Days on Market
215
Cumulative Days on Market
211
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Location
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 4
Bathrooms: 4
Interior
Sewer
Public Sewer
Appliances
Dishwasher
Flooring
Other
Exterior Features
Other
Heating
Other
Interior Features
Breakfast Area, Bathtub, Dining Area, Dual Sinks, Entrance Foyer, Living Dining Room, Main Level Primary, Multiple En Suite Bathrooms, Pantry, Split Bedrooms, Soaking Tub, Separate Shower, Vaulted Ceilings, Walk In Closets
Cooling
Central Air
Construction
Year Built
Year Built: 1968
Home type
Single Family Residence
Construction Materials
Block
Architectural Style
Other
Roof
Barrel
Property Condition
Resale
Utilities & Energy
Association Amenities
Boat Dock
Parking Features
Attached, Driveway, Garage, Garage Door Opener, Guest
Water Source
Public
Pool Features
In Ground
Utilities
Cable Available
Other Features
Subdivision Name
Mashta Island
Price History
| Date | Event | Price |
|---|---|---|
04/02/2026 Source: #A11990382 | Off Market | $16,800,000 $4,641/sqft |
04/02/2026 Source: #A11990382 | Listed for Sale | $16,800,000 $4,641/sqft |
03/26/2026 Source: #A11990382 | Price Decreased | $16,800,000 -13.85% $4,641/sqft |
10/16/2025 Source: #A11896953 | Off Market | $19,500,000 $5,387/sqft |
10/16/2025 Source: #A11896953 | Listed for Sale | $19,500,000 +88536.36% $5,387/sqft |
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