Home›520 S Mashta Drive, Key Biscayne, FL 33149

Residential in Key Biscayne

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.

Property Highlights

Roof

  • Barrel
  • Spanish Tile

View

  • Direct Ocean
  • Bay

Sewer

  • Public Sewer

Levels

  • One

Cooling

  • Central Air

Heating

  • Central

Flooring

  • Tile

Amenities

  • Other

Appliances

  • Other

Possession

  • Negotiable

Room Types

  • Family Room

Water View

  • Bay
  • Direct Ocean

WaterSource

  • Public

PoolFeatures

  • In Ground

Water Access

  • Ocean Access

Water Source

  • Public

Listing Terms

  • Cash
  • Conventional

Pool Features

  • In Ground

Other Equipment

  • Other

ParkingFeatures

  • Driveway

InteriorFeatures

  • Bedroom Layout - Split

Parking Features

  • Driveway

Interior Features

  • Bedroom Layout - Split

Master BedroomBath

  • Master Bdrm - Ground

Property Condition

  • Resale

WaterfrontFeatures

  • Ocean Access
  • Bay
  • Seawall

Acreage Description

  • 12 To Less Than 1 Acre Lot

Special Information

  • Sold As-Is

Waterfront Features

  • Bay
  • Seawall

AssociationAmenities

  • Other

Showing Requirements

  • Call Listing Agent

Boat and Dock Features

  • Deeded Private Dock

Construction Materials

  • Block

Leasing Permitted Details

  • Okay To Lease

Property Details

Property TypeResidential
StyleSingle Family Residence
Year Built1961
CountyMiami-Dade
SubdivisionMASHTA ISLAND A REPLAT OF
Living Area3,085 sq ft
Bedrooms5
Baths4
Half Baths0
WaterfrontYes
Private PoolYes
Annual Tax$201,741 (2026)
Listing OfficeColdwell Banker Realty
Listing AgentMaureen Jauregui
Office Phone305-361-5722

520 S Mashta Drive, Key Biscayne, FL 33149, Key Biscayne, FL 33149