$16,800,000
 $90,186 est/mo Sourced by Back At You

640 S Mashta Drive,Key Biscayne, FL 33149

Key Biscayne, FL 33149

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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

Details

MLS #A11990382
Listing TypeFor Sale
StyleHouse
Sub-TypeResale
StatusActive
Year1968
Days On Site151
Listing Provided ByDLS International Realty | Brigitte De Langeron

Features

Bed(s)4
Bath(s) 4 Total
SQ Feet3,620
Garage2
PoolYes
Zoning2001
Acreage0.34
Water FrontYes
Property ViewYes

Parking

Garage Yes / NoYes
Parking FeaturesAttached, Driveway, Garage, Garage Door Opener, Guest

Taxes

Tax Annual Amount155651

Area Information

StateFL
CountyMiami Dade
CityKey Biscayne
Zip Code33149
Area2520
Community NameMASHTA ISLAND
Listing VS Median (in MASHTA ISLAND)
Price:
$16,800,000
low | high
Med:
$16,800,000
50% of Average
sqft:
3,620
low | high
Med:
3,620
50% of Average
$ / sqft:
$4,641
low | high
Med:
$4,641
50% of Average
On site:
151
low | high
Med:
151
100% of Average
Sourced by Back At You

Market Activity 33149

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Learn More About This Property

StateFL
CountyMiami Dade
CityKey Biscayne
Zip Code33149
Area2520
Community NameMASHTA ISLAND
Listing VS Median (in MASHTA ISLAND)
Price:
$16,800,000
low | high
Med:
$16,800,000
50% of Average
sqft:
3,620
low | high
Med:
3,620
50% of Average
$ / sqft:
$4,641
low | high
Med:
$4,641
50% of Average
On site:
151
low | high
Med:
151
100% of Average
Sourced by Back At You
Nearby Listings (Within 1/10 mile)
Price: $12.6M - $21M
sqft: 2,500 - 4,500
Listing Updated: June 18, 2026 at 11:26:15 PM PDT