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  3. 640 S Mashta Drive Key Biscayne, FL - 33149
  • MLS® #: A11990382
  • 640 S Mashta Drive
  • Key Biscayne, FL 33149
  • $16,800,000
  • 4 Beds, 4 Bath, 3,620 SqFt
  • Residential

Welcome to your own slice of paradise! Enjoy breathtaking sunsets from your private dock on this waterfront property boasting 100 feet of direct Biscayne Bay frontage. Ideally located on Mashta Island. Set on a 15,000 SF lot, the home features 5 beds, 5 baths, including 2 bayfront primary suites with stunning views, impact windows and doors throughout. The open-concept layout flows seamlessly from the living and dining areas to the modern kitchen and out to the pool and entertainment patio, with floor-to-ceiling glass doors that open to blend indoor and outdoor living. Tranquil guest suite upstairs offering privacy and views. It also features an oversized 2-car garage, covered parking, and a spacious driveway for guests. Perfect to move in, renovate, or build your dream waterfront estate

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Essential Information

  • MLS® #A11990382
  • Price$16,800,000
  • CAD Dollar$23,809,800
  • UK Pound£12,535,908
  • Euro€14,716,834
  • Bedrooms4
  • Bathrooms4.00
  • Full Baths4
  • Square Footage3,620
  • Year Built1968
  • TypeResidential
  • Sub-TypeSingle Family Residence
  • StyleOther
  • StatusActive
  • HOPANo Hopa

Community Information

  • Address640 S Mashta Drive
  • Area2520
  • SubdivisionMASHTA ISLAND
  • CityKey Biscayne
  • CountyMiami-Dade
  • StateFL
  • Zip Code33149

Amenities

  • UtilitiesCable Available
  • # of Garages2
  • ViewGarden, Bay
  • Is WaterfrontYes
  • WaterfrontOcean Front
  • Has PoolYes
  • PoolIn Ground
  • Pets AllowedYes, Dogs OK

Parking

Driveway, Garage Door Opener, Guest, Garage, Attached Garage, Attached

Interior

  • AppliancesDishwasher
  • HeatingOther
  • CoolingCentral Air

Interior Features

Entrance Foyer, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Bedroom Layout - Split

Exterior

  • Exterior FeaturesOther
  • RoofBarrel
  • ConstructionBlock

School Information

  • ElementaryKey Biscayne K-8
  • MiddlePonce De Leon
  • HighCoral Gables
  • Office: Dls International Realty

Property Location

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640 S Mashta Drive on www.jupiteroceanfronthomes.us

Offered at the current list price of $16,800,000, this home for sale at 640 S Mashta Drive features 4 bedrooms and 4 bathrooms. This real estate listing is located in MASHTA ISLAND of Key Biscayne, FL 33149 and is approximately 3,620 square feet. 640 S Mashta Drive is listed under the MLS ID of A11990382 and has been available through www.jupiteroceanfronthomes.us for the Key Biscayne real estate market for 98 days.

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Listing information last updated on July 12th, 2026 at 9:50pm CDT.