640 S Mashta Dr, Key Biscayne, FL 33149
For Sale $16,800,000
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Listing Agent: Brigitte De Langeron
Agent Phone:
305-244-7493
Agent Email:
brigitte@miamiwaterfront.com
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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
Entrance Foyer
Pantry
Vaulted Ceiling(s)
Walk-In Closet(s)
Bedroom Layout - Split
Taxes: $155,651.00
Tax Year: 2025
Other
Dishwasher
Garden
Bay
Ocean Front
Elementary School: Key Biscayne K-8
Middle School: Ponce De Leon
Junior High: Ponce De Leon
High School: Coral Gables
Building Description: Other
MLS Area: 2520
Total Square Footage: 4,990
Price per Square Feet: $4,640.88
Total Rooms: 1
Water: Public
Construction: Block
Date Listed: 2026-04-02 00:00:00
Pool: Y
Pool Description: In Ground
Parking: Driveway, Garage Door Opener, Guest, Garage, Attached Garage, Attached
Garage Spaces: 2
Flooring: Other
Roof: Barrel
Heating: Other
Cooling: Central Air
Pets: Yes, Dogs Ok
Sewer: Public Sewer
Parcel ID: 2452050080320
Listing Courtesy Of: Dls International Realty
brigitte@miamiwaterfront.com
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
Sq Ft: 3,620
($4,641 per
sqft)
Bedrooms: 4
Bathrooms: 4
City: Key Biscayne
County: Miami-Dade
Type: Single Family
Development: Mashta Island
Acres: 0.3400
Virtual Tour/Floorplan: View
Year Built: 1968
Listing Number: A11990382
Status Code: A-Active
Taxes: $155,651.00
Tax Year: 2025
Garage:
2
Pets Allowed: Yes, Dogs OK
Interior Features:
Entrance Foyer
Pantry
Vaulted Ceiling(s)
Walk-In Closet(s)
Bedroom Layout - Split
Financial Information:
Taxes: $155,651.00
Tax Year: 2025
Exterior Features:
Other
Equipment:
Dishwasher
View:
Garden
Bay
Waterfront Description:
Ocean Front
School Information:
Elementary School: Key Biscayne K-8
Middle School: Ponce De Leon
Junior High: Ponce De Leon
High School: Coral Gables
Additional Information:
Building Description: Other
MLS Area: 2520
Total Square Footage: 4,990
Price per Square Feet: $4,640.88
Total Rooms: 1
Water: Public
Construction: Block
Date Listed: 2026-04-02 00:00:00
Pool: Y
Pool Description: In Ground
Parking: Driveway, Garage Door Opener, Guest, Garage, Attached Garage, Attached
Garage Spaces: 2
Flooring: Other
Roof: Barrel
Heating: Other
Cooling: Central Air
Pets: Yes, Dogs Ok
Sewer: Public Sewer
Parcel ID: 2452050080320
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Map of 640 S Mashta Dr, Key Biscayne, FL 33149
Listing Courtesy Of: Dls International Realty
brigitte@miamiwaterfront.com