640 S Mashta Drive, Key Biscayne, FL

$16,800,000

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4

Beds

4

Baths

3,620

Square feet

0.340

Acres

About 640 S Mashta Drive

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

Features of 640 S Mashta Drive

MLS® # A11990382
USD $16,800,000
CAD $23,148,216
CNY 元112,746,480
EUR €14,444,035
GBP £12,395,863
RUB ₽1,442,291,760
Bedrooms 4
Bathrooms 4.00
Full Baths 4
Acres 0.34
Year Built 1968
Type Residential
Sub-Type Single Family Residence
Style Other
Status Active
HOPA No Hopa
Membership Equity No

Community Information

Address 640 S Mashta Drive
Area 2520
Subdivision MASHTA ISLAND
City Key Biscayne
County Miami-Dade
State FL
Zip Code 33149

Amenities

Utilities Cable Available
Parking Driveway, Garage Door Opener, Guest, Garage, Attached Garage, Attached
# of Garages 2
View Garden, Bay
Is Waterfront Yes
Waterfront Ocean Front
Has Pool Yes
Pool In Ground
Pets Allowed Yes, Dogs OK
Guest House No

Interior

Interior Features Entrance Foyer, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Bedroom Layout - Split
Appliances Dishwasher
Heating Other
Cooling Central Air
Fireplace No
Master Bedroom 2 Master Baths, Dual Sinks, Master Bdrm - Ground, Separate Shower, Separate Tub

Exterior

Exterior Features Other
Roof Barrel
Construction Block
Front Exposure East

School Information

Elementary Key Biscayne K-8
Middle Ponce De Leon
High Coral Gables

Additional Information

Date Listed April 2nd, 2026
Days on Market 159
Zoning 2001
Foreclosure No
Short Sale No
RE / Bank Owned No
Parcel ID 2452050080320

Listing Details

OfficeDLS International Realty
Emailbrigitte@miamiwaterfront.com

Listing Map

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