


Listing Courtesy of: MIAMI / Listed By: Maureen Jauregui, Coldwell Banker Realty
520 S Mashta Dr Key Biscayne, FL 33149
Active (6 Days)
$19,900,000 (USD)
Description
MLS #:
A12071221
A12071221
Taxes
$201,741(2026)
$201,741(2026)
Lot Size
0.51 acres
0.51 acres
Type
Single-Family Home
Single-Family Home
Year Built
1961
1961
Style
One Story
One Story
Views
Bay, Ocean
Bay, Ocean
County
Miami-Dade County
Miami-Dade County
Community
Mashta Island a Replat of
Mashta Island a Replat of
Listed By
Maureen Jauregui, Coldwell Banker Realty
Source
MIAMI
Last checked Aug 18 2026 at 3:11 PM EDT
MIAMI
Last checked Aug 18 2026 at 3:11 PM EDT
Bathroom Details
- Full Bathrooms: 4
Interior Features
- First Floor Entry
- Split Bedrooms
Subdivision
- Mashta Island A Replat Of
Heating and Cooling
- Central
- Central Air
Pool Information
- In Ground
- Pool
Flooring
- Tile
Exterior Features
- Roof: Barrel
- Roof: Spanish Tile
Utility Information
- Utilities: Water Source: Public
- Sewer: Public Sewer
School Information
- Elementary School: Keybiscayne
- Middle School: Ponce De Leon
- High School: Coral Gables
Parking
- Driveway
Stories
- 1
Living Area
- 3,085 sqft
Location
Disclaimer: Copyright 2026 Miami Association of Realtors. All rights reserved. This information is deemed reliable, but not guaranteed. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated 8/18/26 08:11
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.