520 S Mashta Dr, Key Biscayne, FL 33149
$19,900,000 - For Sale
Property Details
Price: $19,900,000
Sq Ft: 3,085
($6,451 per sqft)
Bedrooms: 5
Bathrooms: 4
City:Key Biscayne
County:Miami-Dade
Type:Single Family
Development:Mashta Island A Replat Of
Subdivision:Mashta Island A Replat Of
Acres:0.5100
Virtual Tour/Floorplan:View
Year Built:1961
Listing Number:A12071221
Status Code:A-Active
Taxes:$201,741.00
Tax Year: 2026
Garage: 2
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Contact the Listing Agent directly:
Listing Agent: Maureen Jauregui
Agent Phone:
305-798-3124
Agent Email:
carter.jauregui@gmail.com
Equipment:
Other
Interior Features:
Bedroom Layout - Split
View:
Bay
Direct Ocean
Waterfront Description:
Ocean Access
Seawall
Bayfront
Amenities:
Other
Financial Information:
Taxes: $201,741.00
Tax Year: 2026
School Information:
Elementary School: Key Biscayne K-8
Middle School: Ponce De Leon
Junior High: Ponce De Leon
High School: Coral Gables
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View Virtual Tour
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.
MLS Area: 2520
Total Square Footage: 4,177
Price per Square Feet: $6,450.56
Total Rooms: 1
Total Floors: 1
Water: Public
Construction: Block
Date Listed: 2026-08-12 00:00:00
Pool: Y
Pool Description: In Ground
Parking: Driveway
Garage Spaces: 2
Flooring: Tile
Roof: Barrel, Spanish Tile
Heating: Central
Cooling: Central Air
Sewer: Public Sewer
Parcel ID: 2452050090170
Amenities: Other
Listing Courtesy Of: Coldwell Banker Realty
carter.jauregui@gmail.com
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.
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Additional Information:
MLS Area: 2520
Total Square Footage: 4,177
Price per Square Feet: $6,450.56
Total Rooms: 1
Total Floors: 1
Water: Public
Construction: Block
Date Listed: 2026-08-12 00:00:00
Pool: Y
Pool Description: In Ground
Parking: Driveway
Garage Spaces: 2
Flooring: Tile
Roof: Barrel, Spanish Tile
Heating: Central
Cooling: Central Air
Sewer: Public Sewer
Parcel ID: 2452050090170
Amenities: Other
Map of 520 S Mashta Dr, Key Biscayne, FL 33149
Listing Courtesy Of: Coldwell Banker Realty
carter.jauregui@gmail.com
The accuracy of this information is not warranted or guaranteed. This information should be independently verified if any person intends to engage in a transaction in reliance upon it. Some properties that appear for sale on this website may subsequently have sold or may otherwise no longer be available. All properties are subject to price or other changes without notice. For the most current information, please contact us. Information last refresh date: 2026-10-17 15:16:37
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