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520 S Mashta Dr, Key Biscayne FL 33149

Casa En Venta
$19,900,000

BTC: 310.93750000

ETH: 10,459.15149477

Nuevo
Frente al mar
5 camas
4 baños
3,085 sqft

Visión general

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.

Ubicación

Detalles

Tipo:
Residential
Estacionamiento:
Driveway
Año de construcción:
1961
Lote:
22140 Pies Cuadrados
Calefacción:
Central
precio por sq. medidor:
$6,451
Enfriamiento:
Central Air
HOA:
Sin datos

Valuation

Our model vs. what's actually selling nearby.
Estimate
$1,722,450
$1.1M – $15.7M
Confidence Low
List vs. estimate
$18.2M above estimate
List $19,900,000 · +1055.3%
Our model says this listing is priced above recent comparable activity. Room to negotiate.
Price per sq ft
$6,450
+230.9% vs. city median $1,949
Based on
12 MLS comparables
+ 12 public-records sales within 0.5 mi
Median actual sale: $3.3M
Median of recent comparable listings. Sold comps use closing price, active listings use list price.

Destacados

Annual tax
$201,741
2026
Pool
In Ground
View
Bay, Direct Ocean
Waterfront
Ocean Access, Seawall
Garage
2 car garage
Más hechos y características
  • Piso

    • Tile

    Calefacción

    • Central

    Enfriamiento

    • Central Air

    Accesorios

    • Other Equipment/Appliances

    Otras características interiores

    • First Floor Entry

    • Split Bedroom

    • Family Room

    Dormitorios y baños

    • Dormitorios: 5

    • Baños completos: 4

  • Estacionamiento

    • Driveway

    Lote

    • Lote: 22140 Pies Cuadrados

    Otra Información de Propiedad

    • Número de Parcela: 24-52-05-009-0170

    • Zonificación: 2001

  • Tipo y estilo

    • Tipo de propiedad: Residential

    • Subtipo de propiedad: Single Family Residence

  • Otra información financiera

    • Importe anual de impuestos: $201,741

  • Detalles de la fuente

    • MLS ID: A12071221

    Otros hechos

    • Materiales de construcción: Concrete Block Construction

    • Características del lote: 1/2 To Less Than 3/4 Acre Lot

    • Características de la piscina: In Ground

    • Caras de dirección: East

    • Estilo arquitectónico: Attached / One Story

    • Frente al mar: Si

    • Espacios de garaje: 2

    • Garaje: Si

    • Salón: 3085

    • Fuente de agua: Municipal Water

    • Nombre de subdivisión: MASHTA ISLAND A REPLAT OF

Consulta privada
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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: Coldwell Banker Realty