38
  • Type
  • Single Family Residence
  • 4
  • Bedrooms
  • 4
  • Bathrooms
  • 2
  • Garages
  • 3620 Sq Ft
  • Area Size
640 S Mashta Dr, Key Biscayne FL 33149 | Miami-Dade County | A11990382
  • $16,800,000

Description

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

Property Overview

This single-family home at 640 S Mashta Dr is part of the exclusive Mashta Island neighborhood in Key Biscayne. The 4,360-square-foot home, built in 1968, offers four bedrooms and four bathrooms across its spacious layout. The property sits on a 15,000-square-foot lot with 100 feet of direct Biscayne Bay frontage, featuring a private dock for enjoying waterfront access. Impact windows and doors are throughout, and the home includes a large 2-car garage, covered parking, and a generous driveway for guests. The open-concept design connects the living and dining areas to a modern kitchen and flows out to a pool and entertainment patio. Floor-to-ceiling glass doors create a seamless indoor-outdoor experience. Two primary bedroom suites are located on the bayfront side of the home, offering expansive views. The upstairs guest suite provides additional privacy and space. This home is well-suited for moving in as-is, renovating, or building a custom estate. For more details or to schedule a visit, call 305-859-4733.

Frequently Asked Questions

How many bedrooms and bathrooms does the home at 640 S Mashta Dr have?

The home has 4 bedrooms and 4 full bathrooms.

What is the square footage of the living area?

The living area of the home is 3,620 square feet.

How much is the property listed for?

The property is listed for $16,800,000.

What kind of views or features does the home offer?

The home has direct Biscayne Bay frontage with a private dock, and two primary suites with bayfront views. It also features impact windows and doors, an open-concept layout, and floor-to-ceiling glass doors blending indoor and outdoor living.

Is the home on a large lot?

Yes, the home is set on a 15,000 square foot lot.

What is the location of the property?

The property is located at 640 S Mashta Dr, Key Biscayne, FL 33149, within the Mashta Island subdivision.

Monthly Fees & Carrying Costs

  • Membership Required: No
  • Address: Mashta Dr
  • City: Key Biscayne
  • State/county: Miami-Dade County
  • Zip/Postal Code: 33149
  • Area: MASHTA ISLAND

Details

Updated on June 26, 2026 at 7:57 pm
  • Property ID A11990382
  • Price $16,800,000
  • Property Size 3620 Sq Ft
  • Bedrooms 4
  • Room 0
  • Bathrooms 4
  • Garages 2
  • Year Built 1968
  • Type Single Family Residence
  • Property Status Active, Residential

Additional details

  • Flooring Other
  • Waterfront Features Ocean Access, Ocean Front
  • Bedroom Features At Least 1 Bedroom Ground Level, Primary Bath Shower, Primary Bath Tub
  • Cooling Central Air
  • Association Type None
  • Building MASHTA ISLAND
  • Area Mashta Island
  • Annual Tax 155651
  • Association No
  • Elementary School Keybiscayne
  • Private Pool No
  • Listing Terms All Cash, Conventional
  • Waterfront Yes
  • Full Bathrooms 4
  • Subdivision MASHTA ISLAND
  • Restrictions Ok To Lease
  • Parking Driveway, Guest
  • Heating Other
  • Structure Type House
  • Tax Year 2025
  • Construction Concrete Block Construction
  • Building Area 4990
  • Covered Spaces 2
  • Middle School Ponce De Leon
  • View Bay, Garden
  • Year Built Details Resale
  • High School Coral Gables
  • Pets Allowed Yes
  • Inclusions Dock Available
  • Half Bathrooms 0
  • Flood Zone AE
  • New Construction No
  • Garage Spaces 2
  • Style WF/Pool/Ocean Access
  • Lot Size (Sq Ft) 15000
  • Membership Purchase Required No

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Christopher Lazaro

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