MIAMI LUXHomes

571 S Mashta Dr, Key Biscayne, FL 33149

$6,350,0004 Beds3 Baths2,761 Sq. Ft.$2,300 / sq. ft.

Key Biscayne, FL 33149 · MASHTA ISLAND A REPLAT OF

Status
Active
Type
Single Family Residence
Year Built
1964
Days on Market
6
Lot Size
10,000 sqft
MLS #
A12076783
County
Miami-Dade County

About 571 S Mashta Dr, Key Biscayne, FL 33149

Enjoy your own paradise in the paradise—an exceptional, move-in-ready residence on prestigious Mashta Island, one of Key Biscayne's most exclusive and tranquil enclaves. Beautifully remodeled and designed for relaxed yet sophisticated island living, this home offers exceptional indoor and outdoor spaces to enjoy with family and friends. Outdoor living takes center stage with a heated pool and spectacular covered entertainment area featuring a custom BBQ, grill, sink, granite counters and seating for up to 12 guests—the perfect setting for weekend gatherings, celebrations and year-round enjoyment of the Key Biscayne lifestyle. Bright, inviting interiors feature a spacious open layout that seamlessly connects the living, dining and kitchen areas. The impressive chef's kitchen is equipped with premium Viking appliances, generous cooking island and abundant granite counter space. Marble flooring enhances the main living areas, while warm wood floors add character to the private bedroom spaces. The primary suite opens directly to the pool area and features a large walk-in closet and a luxurious bath with steam shower. The property is on a 10,000 SF lot with an ample circular driveway, covered garage for two vehicles and a large additional side parking.

How This Listing Compares in Key Biscayne

Per square foot, it is asking 138% above the Key Biscayne median for sales closed over the last twelve months — typical of premium views, newer construction or a top-tier building.

This homeKey Biscayne median (12 mo)
Price per sq. ft.$2,300$967
4-bedroom price$6,350,000$3,450,000
Days on market661

Medians from closed MLS sales in Key Biscayne; a starting point, not an appraisal.

Home Features at 571 S Mashta Dr, Key Biscayne, FL 33149

Bathrooms Full
3
Bathrooms Half
0
Interior Features
First Floor Entry, Bar, Built-in Features, Closet Cabinetry, Cooking Island, Walk-In Closet(s), Family Room
Appliances
Bottled Gas, Dishwasher, Disposal, Dryer, Electric Range, Gas Range, Gas Water Heater, Ice Maker, Microwave, Refrigerator, Free-Standing Freezer, Wall Oven, Washer
Flooring
Ceramic Floor, Marble, Parquet
Heating
Central, Electric
Cooling
Central Air, Electric
Furnished
Unfurnished
Architectural Style
Detached, One Story
Garage Spaces
2
Attached Garage
Yes
Parking Features
Driveway
Pool Features
Concrete, Equipment Stays
Pool Private
No
Year Built Details
Effective Year Built
Direction Faces
Southwest

The Building at 571 S Mashta Dr, Key Biscayne, FL 33149

Building Name
MASHTA ISLAND A REPLAT OF
Building Area Total
3722
Building Area Units
Square Feet
Association
No

Lot, Views & Construction at 571 S Mashta Dr, Key Biscayne, FL 33149

Lot Features
Less Than 1/4 Acre Lot
Lot Size Square Feet
10,000
Waterfront
No
View
None
Construction Materials
Concrete Block Construction
Roof
Shingle
Exterior Features
Barbeque, Built-In Grill, Lighting
Sewer
Public Sewer
Water Source
Municipal Water
New Construction
No

Taxes & Public Record for 571 S Mashta Dr, Key Biscayne, FL 33149

Parcel Number
24-52-05-009-0370
Tax Annual Amount
$55,539
Tax Year
2,025
Tax Legal Description
5-6 55 42 MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 17 BLK 4 LOT SIZE 100.000 X 100 OR 16975-0825 1095 1 COC 24379-0228 03 2006 1
Zoning
2001
County Or Parish
Miami-Dade County

Assigned Schools for 571 S Mashta Dr, Key Biscayne, FL 33149

Elementary School
Keybiscayne
Middle School
Ponce De Leon
High School
Mast Academy

School assignments are provided by the listing and should be independently verified.

Map & Neighborhood

571 S Mashta Dr, Key Biscayne, FL 33149 · More homes in Key Biscayne

Courtesy of HR 19 Realty LLC

Comparable Listings in Key Biscayne

571 S Mashta Dr, Key Biscayne, FL 33149 at a Glance

Offered for sale in Key Biscayne 33149, 571 S Mashta Dr is a single family home with 4 bedrooms, 3 bathrooms, about 2,761 square feet of living space, dating to 1964. The asking price is $6,350,000, on the market since August 24, 2026, with HR 19 Realty LLC as the listing brokerage. Students here are assigned to Keybiscayne, Ponce De Leon and Mast Academy. Ask Matthew Gromadzki for a private showing, the full disclosure package, or comparable sales before you make an offer.