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640 S Mashta Drive, Key Biscayne, FL - photo 1

$16,800,000

640 S Mashta Drive

Key Biscayne, FL 33149

Estimated payment $100,800/month

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4Beds
4Baths
3,620Sq Ft
$4641Price/Sq Ft

Preferred partner

Kinsfolk Realty

Kinsfolk Signature Realty

Powered by Hometrino

(813) 602-0498

Highlights

No HOA
Private Pool
Garage
Built in 1968
14,810 sqft Lot

About This Home

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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Facts & features

Bedrooms & bathrooms

  • •Bedrooms:4
  • •Bathrooms:4
  • •Full bathrooms:0

Heating

  • •Has Heating:Yes

Interior area

  • •Total structure area:3,620 sqft
  • •Total interior livable area:3,620 sqft

Parking

  • •Parking features:N/A
  • •Garage spaces:0
  • •Has attached garage:No

Lot

  • •Size:14,810 sqft

Details

  • •Parcel number:N/A

Type & style

  • •Home type:Single Family Residence
  • •Property subtype:Residential

Materials

  • • N/A

Condition

  • •Year built:1968

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Price history

DateEventPrice
2026-04-02T00:00:00.000ZListed for sale$16,800,000$4641/sqft

Listing Agent

Brigitte De Langeron

DLS International Realty

Brokerage Phone: 305-459-3875

Source: Beaches MLS · MLS #A11990382

Data Powered by Home Junction, Inc.

Nearby

Schools

KEY BISCAYNE K-8 CENTER

Elementary · 0.6 mi

Supermarkets

Winn-Dixie

0.7 mi

Key Biscayne Green Market

0.9 mi

NAHUEN Gourmet Market

1.0 mi

Dining

Cocina

0.3 mi

Tasters Lane

0.4 mi

Panna

0.7 mi

Parks

Harbor Park

0.4 mi

Hampton Park

0.7 mi

Paradise Park

0.8 mi

Beaches

Crandon Park Beach

1.2 mi

Crandon Beach

2.1 mi

Hobie Island Beach Park

4.1 mi

Nearby amenity locations include data © OpenStreetMap contributors.