640 S Mashta Dr, Key Biscayne, FL 33149

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Single Family Residence - Mashta Island

$16,800,000 Built: 1968

4 bedrooms 4 bathrooms N/A

Type of PropertySingle Family Residence

Style of PropertyWF/Pool/Ocean Access

Property Ft²4,990

Living Ft²3,620

Price per Ft²$4,640.88

PetsYes

WaterfrontYes

PoolYes

FurnitureN/A

Property description of Single Family Residence - Mashta Island

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

Other

Interior Features

First Floor Entry

Entrance Foyer

Pantry

Split Bedroom

Vaulted Ceiling(s)

Walk-In Closet(s)

Garage Converted

Amenities

Public Road

Equipment/Appliances

Dishwasher

Property Features

NameMashta Island

MLSA11990382

Last Update150 days

ForeclosureN/A

Short SaleN/A

ParkingDriveway, Guest

Lot Ft²15,000

Approx. Lot Size

Balcony/PorchN/A

Boat DockYes

Pet RestrictionsDogs OK

Floor Number

Cooling DescriptionCentral Air

Heating DescriptionOther

ViewBay, Garden

ConstructionConcrete Block Construction

Floor TypeOther

Maintenance Fees

Association Fees

Taxes$155,651

Property contact form

Gladys Martinez PA305-321-7889954-743-1905gmrealtor7@gmail.com

City

Key Biscayne

View city details

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MLS Data Source: Miami Association of REALTORS. Copyright SEFMLS © 2026
Listing is a courtesy of DLS International Realty. Office (305-459-3875). Agent (brigitte@miamiwaterfront.com, 305-244-7493).
Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited, is a violation of the terms of use, and may violate federal and state law.

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