520 S Mashta Dr, Key Biscayne, FL 33149

$20,000,000 Asking Price

5 beds
4 baths
3,085  sqft
Built in 1961

Seize the rare chance to create your dream estate on one of the largest lots in Key Biscayne's prestigious Mashta Island community. This 23,263-square-foot property features 138 feet of pristine water frontage, offering breathtaking open-water views—an ideal backdrop for a grand residence. Collaborate with the renowned Corazzini & Associates, known for their award-winning designs that merge elegance with functionality. Enjoy spectacular sunsets visible throughout your home, perfect for relaxation and entertaining. Included are fully approved plans and permits for a stunning 8-bedroom, 8.5-bath, 10,000-square-foot estate, ensuring a seamless start to your vision. Don’t miss this once-in-a-lifetime opportunity to establish a legacy in one of South Florida's most prestigious enclaves.

Features & Amenities

Interior

General:
First Floor Entry, Split Bedroom, Family Room
Appliances:
Other Equipment/Appliances
Flooring:
Tile
A/C:
true, Central Air
Heating:
true, Central

Exterior

Style:
Attached, One Story
Pool:
In Ground
Parking:
Driveway

Construction

Roofing:
Barrel Roof, Curved/S-Tile Roof

Location

Originating MLS:
Miami Association of REALTORS®
County:
Miami-Dade County

Lot

Zoning:
2001, 5-6 55 42 MASHTA ISLAND A REPLAT OF TRS A & C SELY35FT LOT 16 & ALL LT 17 BLK BLK 3 LOT SIZE 135.000 X 164 OR 15816-1278 1292 1, 24-52-05-009-0170
View:
Bay, Direct Ocean

Utilities

Water:
Municipal Water
Sewer:
Public Sewer

Financial

Source:
Miami Association of REALTORS®

This listing courtesy of:
Douglas Elliman, Jonathan Matos

About Key Biscayne, FL

Housing

Number of Units
7,990
Median Home Value
$1,033,628
Median Rent
$2,070

31.52% of housing units are renter occupied.

26.75% are vacant.

Commute

Car
46.14%
Public Transportation
2.03%
Walk to Work
3.15%
Work from Home
47.16%
Other
0.90%

The median travel time to work is 14 minutes.

People

Population
16,076
Median Age
35.30
Median Household Size
3.14

Education

High School
7.79%
Associate’s Degree
5.51%
Bachelor’s Degree
37.46%
Graduate Degree
36.58%

Disclaimer: Community and Demographic information uses data from the U.S. Census Bureau but is not endorsed or certified by the Census Bureau.

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