Basic Information
- MLS # A12071221
- Type Single Family Home
- Subdivision/Complex Mashta Island A Replat Of
- Year Built 1961
- Total Size 22,140 Sq.Ft / 0.51 Acre
- Date Listed 08/17/2026
- Days on Market 4
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
- Waterfront Yes
- Parking Spaces 2
- Pool Yes
- WF Description Bayfront, Ocean Access, Seawall
- Parking Description Driveway
- Exterior Features Security High Impact Doors
Interior Features
- Adjusted Sqft 3,085Sq.Ft
- Interior Features Bedroom On Main Level, First Floor Entry, Split Bedrooms
- Sqft 3,085 Sq.Ft
Property Features
- Aprox. Lot Size 22,140
- Furnished Info No
- Short Sale Regular Sale
- HOA Fees N/A
- Subdivision Complex
- Subdivision Info Mashta Island A Replat Of
- Tax Amount $201,741
- Tax Year 2026
520 S Mashta Dr
Key Biscayne, FL 33149The multiple listing information is provided by the Miami Association of Realtors® from a copyrighted compilation of listings. The compilation of listings and each individual listing are ©2023-present Miami Association of Realtors®. All Rights Reserved. The information provided is for consumers' personal, noncommercial 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. Listing courtesy of: Coldwell Banker Realty. tel: 305-361-5722
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