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640 S Mashta Dr

Key Biscayne, FL 33149
  • $16,800,000
  • STATUS: Active
  • ON SITE: 14 Days
  • MLS #: A11990382
$16,800,000
  • 4
    BEDS
  • 0.34
    ACRES
  • 4
    BATHS
  • 0
    1/2 BATHS
  • 3,620
    SQFT
  • $4,641
    $/SQFT
Neighborhood:
Type:
Single-Family Home
Built:
1968
County:

School Information

Elementary School:
Middle School:
High School:

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

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Copyright 2026, Participating Associations/MLS’s in the SEFMLS, MIAMI Association of REALTORS, Realtor Association of Greater Ft. Lauderdale, South Broward Board of Realtors. All rights reserved. The data relating to real estate for sale on this web site comes in part from the participating Associations/MLS’s in the Southeast Florida Regional Multiple Listing Service cooperative agreement, MIAMI Association of REALTORS, Realtor Association of Greater Ft. Lauderdale, South Broward Board of Realtors. 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. Information is deemed reliable but not guaranteed. Copyright 2026, Participating Associations/MLS’s in the SEFMLS, MIAMI Association of REALTORS, Realtor Association of Greater Ft. Lauderdale, South Broward Board of Realtors. All rights reserved. Use of search facilities of data on the site, other than a consumer looking to purchase real estate, is prohibited. Data last updated 2026-04-16T23:51:11.18.
www.greatermiamiluxuryhomes.com/homes/174794672
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640 S Mashta Dr Key Biscayne, FL 33149

  • Price: $16,800,000
  • Status: Active
  • On Site: 14 Days
  • MLS #: A11990382
4
Beds
4
Baths
0
½ Baths
0.34
Acres
3,620
SQFT
$4,641
$/SQFT
1968
Built
Neighborhood:
Mashta Island
County:
Miami-Dade
Area:
Mashta Island
Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Coral Gables
Property 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
Exterior Features

Architectural Style AttachedOther Attached Garage YN Yes Construction Materials Concrete Block Construction Covered Spaces 2 Direction Faces East Exterior Features Other Frontage Length 100 Garage YN Yes Inclusions Dock Available Lot Features Less Than 1/4 Acre Lot Parking Features DrivewayGuest Pool Features In Ground Pool Private YN No Roof Barrel Roof View BayGarden View YN Yes Waterfront Features Ocean AccessOcean Front Waterfront YN Yes

Interior Features

Adjusted Square Footage 4234 Appliances Dishwasher Building Area Total 4990 Cooling Central Air Entry Location Foyer Flooring Other Heating Other Heating YN Yes Interior Features First Floor EntryEntrance FoyerPantrySplit BedroomVaulted Ceiling(s)Walk-In Closet(s)Garage Converted Master Bathroom Features 2 Primary BathroomsDual Sinks Other Equipment Automatic Garage Door Opener Room Bedroom Features At Least 1 Bedroom Ground LevelPrimary Bath ShowerPrimary Bath Tub Room Dining Room Features Breakfast AreaDining/Living RoomL Shaped Dining

Property Features

Association YN No Building Name MASHTA ISLAND Community Features Public Road Cooling YN Yes Horse YN No Listing Terms All CashConventional Membership Purch Rqd YN No New Construction YN No Pets Allowed Dogs OK Property Sub Type Single Family Residence Public Survey Section 5 Restrictions Ok To Lease Sewer Public Sewer Structure Type House Tax Annual Amount 155651 Tax Year 2025 Type Of Association None Water Source Municipal Water Year Built Details Resale Zoning 2001

Listing courtesy of DLS International Realty: .


Copyright 2026, Participating Associations/MLS’s in the SEFMLS, MIAMI Association of REALTORS, Realtor Association of Greater Ft. Lauderdale, South Broward Board of Realtors. All rights reserved. The data relating to real estate for sale on this web site comes in part from the participating Associations/MLS’s in the Southeast Florida Regional Multiple Listing Service cooperative agreement, MIAMI Association of REALTORS, Realtor Association of Greater Ft. Lauderdale, South Broward Board of Realtors. 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. Information is deemed reliable but not guaranteed. Copyright 2026, Participating Associations/MLS’s in the SEFMLS, MIAMI Association of REALTORS, Realtor Association of Greater Ft. Lauderdale, South Broward Board of Realtors. All rights reserved. Use of search facilities of data on the site, other than a consumer looking to purchase real estate, is prohibited. Data last updated 2026-04-16T23:51:11.18.
 
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