Waterfront
Address
640 S Mashta Dr, Key Biscayne, FL
Price
$ 16,800,000
Property Attributes
- MLS#A11990382
- TypeSingle Family
- Listing Status Active
- CountyMiami-Dade
- CityKey Biscayne
- Area52
- NeighborhoodMASHTA ISLAND
- Zip33149
- Style
- Year Built1968
- Taxes$ 155651
- Price$ 16,800,000
- Bedrooms4
- Full Bathrooms4
- Half Bathrooms0
- Sqr Footage3620
Data Source:
Southeast Florida MLS (SEFMLS)
Property 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
| Elementary School | Middle School | High School |
|---|---|---|
| Keybiscayne Elementary School | Ponce De Leon Middle School | Coral Gables High School |
| Price History | |
|---|---|
| 4/3/2026 | Listed $16,800,000 |
General Features
| Sewer | Public Sewer |
|---|---|
| Heating | Other |
| Cooling | Central Air |
| Utilities | Cable Available |
| Possession | Close Of Escrow |
| Roof | Barrel |
| Appliances | Dishwasher |
| Garage Spaces | 2 |
| Architectural Style | Other |
| Pool Features | In Ground,Pool |
| Restrictions | OK To Lease |
| Construction Materials | Block |
| Pets Allowed | Dogs OK,Yes |
| Year Built | 1968 |
| View | Bay,Garden |
| Property Subtype | Single Family Residence |
| Tax Year | 2025 |
| Waterfront Features | Ocean Front |
| County | Miami-Dade |
| Property Type | Residential |
| Attached Garage | true |
| Subdivision Name | MASHTA ISLAND |
| Facing Direction | East |
| Garage Y/N | true |
| Full Baths | 4 |
| Special Listing Conditions | Listed As-Is |
| Status | Active |
| High School | Coral Gables |
| City | Key Biscayne |
| Senior Community Y/N | false |
| Zoning Description | 2001 |
| MLS Area | 52 |
| Lot Size Units | Square Feet |
| Lot Size Square Feet | 15000 |
| Listing Terms | Cash,Conventional |
| Elementary School | Keybiscayne |
| Year Built Details | Resale |
| Tax Annual Amount | 155651 |
| Middle/Junior High School | Ponce De Leon |
| Lease Considered Y/N | false |
| Virtual Tour | https://www.propertypanorama.com/instaview/mia/A11990382 |
| Standard Status | Active |
| Occupancy Type | Call Agent |
| Property Sub Type Additional | Single Family Residence |
| PostalCity | Key Biscayne |
| Legal Description | MASHTA ISLAND PB 60-93 LOT 9 BLK 3 LOT SIZE 100.000 X 150 OR 18642-3922 0599 1 |
Interior Features
| Interior Amenities | Bedroom on Main Level,Breakfast Area,Bathtub,Dining Area,Dual Sinks,Entrance Foyer,First Floor Entry,Living/Dining Room,Pantry,Split Bedrooms,Vaulted Ceiling(s),Walk-In Closet(s) |
|---|---|
| Flooring | Other |
| Air Conditioning Y/N | true |
| Total Bedrooms | 4 |
| Total Baths | 4 |
Exterior Features
| Exterior Amenities | Other |
|---|---|
| Parking Features | Attached,Driveway,Garage,Guest,Garage Door Opener |
| Lot Features | < 1/4 Acre |
| Water Source | Public |
| Lot Size Area | 15000 |
| Building Area Total | 4990 |
| Frontage Length | 100 |
| Private Pool | true |
| Waterfront Y/N | true |
| Covered Spaces | 2 |
| Road Frontage Type | City Street |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
Property vs Single Family Average in 33149
Price
Taxes
Year Built
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Data Last Updated: September 20, 2026 1:02 AM UTC
