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571 S Mashta Dr, Key Biscayne FL 33149

House For Sale
$6,350,000

BTC: 81.25399872

ETH: 2,592.89505921

+$400K (2026/08/29)
3 days
4 bds
3 ba
2,761 sqft

Overview

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.

Location

Details

Type:
Residential
Parking:
Driveway
Year Built:
1964
Lot:
10000 Square Feet
Heating:
Central / Electric
Price/sqft:
$2,300
Cooling:
Central Air / Electric
HOA:
No Data

Valuation

Our model vs. what's actually selling nearby.
Estimate
$2,147,500
$1.7M – $4.7M
Confidence Low
List vs. estimate
$4.2M above estimate
List $6,350,000 · +195.7%
Our model says this listing is priced above recent comparable activity. Room to negotiate.
Price per sq ft
$2,299
+18.2% vs. city median $1,946
Based on
6 MLS comparables
+ 14 public-records sales within 0.5 mi
Median actual sale: $3.5M
Median of recent comparable listings. Sold comps use closing price, active listings use list price.

Highlights

Annual tax
$55,539
2025
Pool
Concrete
View
None
Garage
2 car garage
All facts and features
  • Flooring

    • Ceramic Floor

    • Marble

    • Parquet

    Heating

    • Central

    • Electric

    Cooling

    • Central Air

    • Electric

    Appliances

    • Bottled Gas

    • Dishwasher

    • Disposal

    • Dryer

    • Electric Range

    • Gas Range

    • Gas Water Heater

    • Ice Maker

    • Microwave

    • Refrigerator

    • Free-Standing Freezer

    • Wall Oven

    • Washer

    Other interior features

    • First Floor Entry

    • Bar

    • Built-in Features

    • Closet Cabinetry

    • Cooking Island

    • Walk-In Closet(s)

    • Family Room

    Bedrooms and bathrooms

    • Bedrooms: 4

    • Full bathrooms: 3

  • Parking

    • Driveway

    Property

    • Exterior Features: Barbeque / Built-In Grill / Lighting

    Lot

    • Lot: 10000 Square Feet

    Other Property Information

    • Parcel Number: 24-52-05-009-0370

    • Zoning: 2001

  • Type and style

    • Property Type: Residential

    • Property Sub Type: Single Family Residence

  • Other financial information

    • Annual tax amount: $55,539

  • Source details

    • MLS ID: A12076783

    Other facts

    • Construction Materials: Concrete Block Construction

    • Fireplace Features: Fireplace

    • Lot Features: Less Than 1/4 Acre Lot

    • Patio And Porch Features: Deck / Open Porch

    • Pool Features: Concrete / Equipment Stays

    • Window Features: Blinds / High Impact Windows / Picture Window

    • Direction Faces: Southwest

    • Other Structures: Extra Building/Shed

    • Architectural Style: Detached / One Story

    • Fireplace: Yes

    • Garage Spaces: 2

    • Attached Garage: Yes

    • Garage: Yes

    • Living Area: 2761

    • Water Source: Municipal Water

    • Subdivision Name: MASHTA ISLAND A REPLAT OF

Private inquiry
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The multiple listing information is provided by the Miami Association of REALTORS® from a copyrighted compilation of listings. The compilation of listings and each individual listing are ©2026-present Miami Association of REALTORS®. All Rights Reserved. The information provided is for consumers' personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Listing courtesy of: HR 19 Realty LLC