640 N Mashta DriveKey Biscayne, FL 33149Sale Price: $3,000,000

  • Sale Price: $3,000,000
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Federal 30-year interest rate: 6.76% last updated on Sep 10, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $3,000,000Sale Price
  • 5Bedrooms
  • 4Full Bath
  • 1Half Baths
  • 3,673Square Feet
  • 10,000Lot Size Square Feet

Listing Tools

Corner and oversized lot with 10,000 Sq Ft located on exclusive and private Mashta Island. This gorgeous two story home has high ceilings, impact glass, two car garage, 5 bedrooms with 4.5 bathrooms which make it the perfect fit for any family that is ready for the island life Key Biscayne has to offer. This home has been remodeled and updated with a wonderful kitchen and family room, luminous rooms with tons of natural light throughout, great storage space, spacious pool and patio area for those who like to entertain, circular driveway to fit several vehicles and so much more. Easy to show.. call or text listing agent.

Property Details of 640 N Mashta Drive

Property Details

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Mortgage Calculator


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Est. Mortgage:
$/month over payments
Federal 30-year interest rate: 6.76% last updated on Sep 10, 2026. * The above figures are estimates provided by Union Street Media using the FRED® API, and are not endorsed or certified by the Federal Reserve Bank of St. Louis. Check with your lender for actual interest rates.
Listed by Brigitte Nachtigall and Olga Cuesta Lerma of Great Properties International LLC

The multiple listing information is provided by Miami Association of REALTORS® from a copyrighted compilation of listings. The compilation of listings and each individual listing are © 2026 Miami Association of REALTORS®. All Rights Reserved. The information 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. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Data last updated on September 17, 2026

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