$19,900,000
5 Beds · 4 Baths · 3,085 sqft
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.
Bedrooms
5
Bathrooms
4
Living Area
3,085 sqft
Heating
Central
Cooling
Central Air
Interior Features
First Floor Entry, Split Bedroom, Family Room
Style
Attached, One Story
Roof
Barrel Roof, Curved/S-Tile Roof
Lot Size
22140 sqft
Garage Spaces
2
Parking Details
Driveway
Property Type
Single Family Residence
MLS#
550489621
Year Built
1961
Area
Mashta Island A Replat Of
Days on Market
6
Monthly Payment
$123,344/mo
Listing courtesy of Coldwell Banker Realty
This listing was last updated in the MLS on August 18, 2026.
Listing information is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Data last updated August 18, 2026. Listing provided courtesy of the Miami Association of REALTORS® MLS. The data relating to real estate for sale on this web site comes in part from the Internet Data Exchange (IDX) program of the MIAMI Association of REALTORS®.


