WaterfrontNew Listing

520 s mashta dr

Key Biscayne, FL 33149

$19,900,000

5 BEDS 4 BATHS
3,085 SQFT
Residential - Single Family
WaterfrontNew Listing
Image 1
Image 2
Image 3
Image 4
Bedrooms 5
Total Baths 4
Full Baths 4
Square Feet 3085
Status Active
MLS # A12071221
County Miami-Dade County
More Info
Category Residential - Single Family
Status Active
Square Feet 3085
MLS # A12071221
County Miami-Dade County
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.

Exterior Features

  • Style Attached, One Story
  • Construction Single Family
  • Siding Concrete Block Construction
  • Roof Barrel Roof, Curved/S-Tile Roof
  • Garage Yes
  • Garage Description 2
  • Water Municipal Water
  • Sewer Public Sewer
  • Lot Description 1/2 To Less Than 3/4 Acre Lot

Interior Features

  • Appliances Other Equipment/Appliances
  • Heating Central
  • Cooling Central Air
  • Living Area 3,085 SQFT
  • Year Built 1961

Neighborhood & Schools

  • Subdivision MASHTA ISLAND A REPLAT OF
  • Elementary School Keybiscayne
  • Middle School Ponce De Leon
  • High School Coral Gables

Financial Information

  • Parcel ID 24-52-05-009-0170
  • Zoning 2001

Listing Information

Listing Provided Courtesy of Coldwell Banker Realty
Listing Agent Maureen Jauregui
The property listing data and information, or the Images, set forth herein were provided to Miami Association of Realtors, Inc. from third party sources, including sellers, lessors, landlords and public records, and were compiled by Miami Association of Realtors, Inc. The property listing data and information, and the Images, are for the personal, non commercial use of consumers having a good faith interest in purchasing, leasing or renting listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing, leasing or renting. Miami Association of Realtors, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.
Listing data is current as of 08/30/2026.

Contact Our Agent

By clicking “Submit,” I agree to be contacted by Lake Homes Realty, LLC, its affiliates, and real estate professionals via call, text, and email for real estate services. This includes by automated means, even if your number is on a federal, state, or our internal Do Not Call list. To opt out, you can reply "stop" at any time or reply "help" for assistance. You can also click the unsubscribe link in the emails. Message and data rates may apply. Message frequency may vary. You also agree to our Terms of Use and Privacy Policy.