640 S Mashta Dr - Image 1
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$19,500,000

Price Changed

640 S Mashta Dr

Key Biscayne, FL 33149•Miami-Dade County•MASHTA ISLAND
Single Family ResidenceFor SaleActive

Property Highlights

5 / 5

Beds / Baths

3,620

Square Feet

0.34

Acres

1968

Year Built

About This Property

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

Year Built1968
Living Area3,620 sqft
Lot Size0.34 acres

Listing Information

MLS IDA11896953
MLS NameMiamiAssociationOfRealtors
Sale TypeFor Sale
Days on Market14 days
Last UpdatedOct 17, 2025
Price ChangedOct 15, 2025

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Quick Stats

Property Type:Single Family Residence
Status:Active
Listed:N/A