Water Views
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 | PublicSewer |
|---|---|
| Heating | Other |
| Cooling | CentralAir |
| Utilities | CableAvailable |
| Possession | CloseOfEscrow |
| Roof | Barrel |
| Appliances | Dishwasher |
| Garage Spaces | 2 |
| Architectural Style | Other |
| Pool Features | InGround,Pool |
| Restrictions | OkToLease |
| Construction Materials | Block |
| Pets Allowed | DogsOk,Yes |
| Year Built | 1968 |
| View | Bay,Garden |
| Property Subtype | SingleFamilyResidence |
| Tax Year | 2025 |
| Waterfront Features | OceanFront |
| 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 | ListedAsIs |
| Status | Active |
| High School | Coral Gables |
| City | Key Biscayne |
| Senior Community Y/N | false |
| Zoning Description | 2001 |
| MLS Area | 52 |
| Lot Size Units | SquareFeet |
| 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 | CallAgent |
| Property Sub Type Additional | SingleFamilyResidence |
| 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 | BedroomOnMainLevel,BreakfastArea,Bathtub,DiningArea,DualSinks,EntranceFoyer,FirstFloorEntry,LivingDiningRoom,Pantry,SplitBedrooms,VaultedCeilings,WalkInClosets |
|---|---|
| Flooring | Other |
| Air Conditioning Y/N | true |
| Total Bedrooms | 4 |
| Total Baths | 4 |
Exterior Features
| Exterior Amenities | Other |
|---|---|
| Parking Features | Attached,Driveway,Garage,Guest,GarageDoorOpener |
| Lot Features | LessThanQuarterAcre |
| 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 | CityStreet |
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 13, 2026 3:14 PM UTC
Palm Beach Board of Realtors MLS® (PBBORMLS) All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers
All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating
