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640 Mashta Dr
Key Biscayne, FL, 33149
Active$16,800,000
640 Mashta Dr
Key Biscayne, FL, 33149
Active$16,800,000
4
Bedrooms
4
Bathrooms
3,620 sqft
Living Area
1968
Year Built
Key Biscayne, FL, 33149
Active$16,800,000
Key Biscayne, FL, 33149
Active$16,800,000
4
Bedrooms
4
Bathrooms
3,620 sqft
Living Area
1968
Year Built
15,000
Lot Size (sqft)
3
Days on Market
AI Photo Analysis
AI analysis is based on listing photos and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.
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
See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.
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Key Biscayne, FL, 33149
Estimate your monthly payment for this waterfront property
$3,360,000 down
Estimated payments only. Actual rates and terms may vary.
Listing courtesy of DLS International Realty
Last updated: 4/25/2026
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Dock Score™
What shaped this score
Dock Score is a DockOnly.com rating. Not provided by or affiliated with the MLS or listing broker. This information was not provided by the MLS.
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Assigned Public Schools
Key Biscayne K-8 Center
Grades PK-8 · Key Biscayne
Ponce de Leon MS
Grades 6-8 · Coral Gables
Coral Gables Senior High
Grades 9-12 · Coral Gables
Nearby Private Schools
School data from Miami-Dade County Open Data Hub. Verify attendance zones with the school district.