$16,800,000
640 S Mashta Drive, Key Biscayne, FL 33149
Mashta Island
Beds
4 Beds
Baths
4 Baths
Living Area
3,620 Sq Ft
Lot
0.34 acres
Built
1968
Days Listed
81
Price Per Sq Ft
$4,641/sqft
Listed
Apr 2, 2026
Garage
2 spaces
Property Type
Single Family Residence
Property Overview
This 4-bedroom waterfront single family residence at 640 S Mashta Drive, Key Biscayne, FL 33149 in the Mashta Island community on 0.34 acres with 3,620 square feet of living area, built in 1968 is listed for $16,800,000. Notable MLS signals include Ocean Front, Pool.
MLS Public Remarks
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
Key Biscayne Property Snapshot
Property Type
Residential
Sub Type
Single Family Residence
Total Baths
4
Building Area
4,990 sq ft
Lot Size
15,000 sq ft
Condition
Resale
MLS #
A11990382
Waterfront, Boating & Outdoor
Waterfront
Yes
Waterfront
Ocean Front
Private Pool
Yes
Pool Features
In Ground
View
Garden, Bay
Interior & Construction
Interior Features
Entrance Foyer, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Bedroom Layout - Split
Primary Bedroom
2 Master Baths, Dual Sinks, Master Bdrm - Ground, Separate Shower, Separate Tub
Rooms
Garage Converted
Appliances
Dishwasher
Flooring
Other
Construction
Block
Heating
Other
Cooling
Central Air
Parking, HOA & Rules
Garage Spaces
2
Parking Features
Driveway, Garage Door Opener, Guest, Garage, Attached Garage, Attached
Pets Allowed
Yes, Dogs OK
Taxes, Utilities & MLS
Annual Taxes
$155,651
Tax Year
2025
Parcel Number
2452050080320
Zoning
2001
County
Miami-Dade
MLS Area
2520
Sewer
Public Sewer
Water Source
Public
Utilities
Cable Available
Photos
38
Listing courtesy of DLS International Realty
Listing Agent: Brigitte De Langeron
The data relating to real estate for sale on this website comes in part from the Internet Data Exchange (IDX) program of the BeachesMLS. Real estate listings held by brokerage firms other than Levin Investments, Inc are marked with the IDX logo and detailed information about them includes the name of the listing broker. Data provided is deemed reliable but is not guaranteed. All information is subject to change and should be independently verified.
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