520 S Mashta Drive, Key Biscayne, FL 33149
  • $18,500,000
  • $19,900,000

Description

Seize a rare opportunity to create a landmark waterfront estate on one of the largest residential lots in Key Biscayne’s exclusive Mashta Island enclave. Spanning an extraordinary 22, 140 square feet, this exceptional property offers 138 feet of pristine water frontage and sweeping open water views, providing an unparalleled setting for a world class residence.Plans by renowned architect, Pablo Corazzini of Vitalini Corazzini Architects, are available to the buyer, offering a thoughtfully conceived vision that takes full advantage of the property’s remarkable scale, premier waterfront setting, and spectacular sunsets. The proposed design creates an extraordinary canvas for sophisticated indoor-outdoor living and entertaining, should the buyer choose to pursue the concept.With its exceptional lot size, expansive water frontage, and coveted Mashta Island address, this is a truly irreplaceable opportunity to create a legacy estate in one of South Florida’s most prestigious waterfront communities.

  • Address: 520 S Mashta Drive
  • City: Key Biscayne
  • State/County: FL
  • Zip/Postal Code: 33149

Details

Updated on October 31, 2026 at 4:10 am
  • MLS # A12071221
  • Price $18,500,000
  • Property Size 4177 sqft
  • Land Area 0.51 sqft
  • Bedrooms 5
  • Bathrooms 4
  • Garages 2.0
  • Garage Size x x
  • Year Built 1961
  • Property Status Active
  • Office Name Coldwell Banker Realty
  • Agent Name Maureen Jauregui

Additional Details

  • Listing Terms Cash, Conventional
  • Roof Barrel, Spanish Tile
  • Sewer Public Sewer
  • Cooling Central Air
  • Heating Central
  • Flooring Tile
  • County Miami-Dade
  • Property Type Residential
  • Pool In Ground
  • Parking Driveway
  • Elementary School Key Biscayne K-8
  • Middle School Ponce De Leon
  • High School Coral Gables
  • Waterfront Bayfront, Ocean Access, Seawall

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