$12,375,000
Key Biscayne, FL 33149
MLS# A11611809
Status: Closed
5 beds | 5 baths | 4990 sqft
1 / 94
Property Description
Welcome to Heaven on Earth! Fish off your own dock and enjoy stunning sunset views from 100’ of direct Biscayne Bay waterfront in this iconic trophy property on the quiet side of Key Biscayne’s exclusive Mashta Island. Move in, renovate or build your dream home on this 15,000 SF lot. Enter into open-flow indoor-outdoor living, dining, and kitchen, with floor-to-ceiling sliding glass walls overlooking the sparkling screened pool, the wide bay and the boat dock—truly an entertainer’s delight! Sleep easy with five bedrooms and five full baths, including two water-facing principal suites and closets galore, plus impact windows-doors. Plenty of parking, with an oversized two-car garage plus covered parking and large guest driveway. One visit, and it will be clear—heaven on earth is right here!
Details
Maps
Documents
Contract Information
Comp Sale YN: No
Listing Date: 2024-06-25
Status: Closed
Original List Price: 15000000
Sold Price: $12,375,000
Current Price: $12,375,000
Occupant Type: Call Listing Agent
Location and Legal
Country: United States
County Or Parish: Miami-Dade
County Parish Name: Miami-Dade
Street Number: 640
Street Direction Prefix: S
Street Name: Mashta
Street Suffix: Drive
City Name: Key Biscayne
Municipal Code: 24
State Or Province: FL
Postal Code: 33149
Postal Code +4: 1735
Postal Zip: 33149
Subdivision Name: MASHTA ISLAND
Development Name: Mashta Island
Area: 2520
Parcel Number: 2452050080320
Subdivision Number: 8
Zoning: 2001
Flood Zone: AE
General Property Information
Property Sub Type: Single Family Residence
Bedrooms Total: 5
Bathrooms Total: 5
Bathrooms Full: 5
Building Area Main: 4990
Living Area Main: 3620
Adjusted Area Main: 4234
Year Built: 1968
Garage YN: 1
Attached Garage YN: 1
Garage Spaces: 2
Covered Spaces: 2
Lot Size Area: 15000
Lot Size Acres: 0.34
Senior Community YN: No
Waterfront YN: 1
Water Frontage Feet: 100
Stories Total: 2
Direction Faces: East
Pool Private YN: Yes
Financial Information
Membership Fee Required YN: No
Tax Annual Amount: 80770
Tax Year: 2023
Tax Legal Description: MASHTA ISLAND PB 60-93 LOT 9 BLK 3 LOT SIZE 100.000 X 150 OR 18642-3922 0599 1
Status Change Information
Major Change Timestamp: 2024-10-16T09:09:55Z
Major Change Type: Status Change
Price Change Timestamp: 2024-08-05T15:32:56Z
Status Change Date: 2024-10-16
Under Contract Date: 2024-09-20
Close Date: 2024-10-16
Close Price: 12375000
Buyer Financing: Cash
Entry Information
Entry Level: 1
Leasing Permitted Details
Leasing Permitted YN: Yes
Boat and Dock Information
Dock: Yes
Pool Size Details
Pool Size (WxL): 15x30
Storm Protection
Impact Glass: Complete
Buyer Details
Country of Origin: United States
Intended Use: Investment
Buyer State: Florida
Zip Code: 33149
Concessions
Seller Concessions: No
Price Calculations
Current Price To SqFt: 3418.51
Section Details
Parcel Number MLX: 0320
Originating Details
Originating System Key: 397519490
Originating System ID: M00000151
Property Features
Dining Area: Eat-In Kitchen; Formal Dining
Exterior Features: Lighting
Flooring: Tile; Wood
Leasing Permitted Details: Okay To Lease
Parking Features: Circular Driveway; Covered; Driveway; Attached; Attached Garage; Garage
Property Condition: Resale
Appliances: Dishwasher; Dryer; Electric Range; Refrigerator; Washer
Water Heater Details: Electric Water Heater
Boat and Dock Features: Private Dock
Construction Materials: Block; CBS
Cooling: Central Air
Fencing: Fenced
Heating: Other
Interior Features: Bedroom Layout - Split; Walk-In Closet(s)
Levels: Two
Listing Terms: Cash; Conventional
Pets Allowed YN: Yes
Pets Allowed: No Restrictions
Pool Features: Concrete; In Ground; Screen Enclosure
Possession: Negotiable
Roof: Flat; Tile
Sewer: Public Sewer
Utilities: Cable Available
Water Access: No Fixed Bridge
Water Source: Public
Water View: Bay; Ocean
Waterfront Features: Bayfront; Ocean Front
Showing Requirements: Call Listing Agent; Showing Service
Contingencies: Inspection
Room Types: Great Room; Media Room
Acreage Description: 1/4 To Less Than 1/2 Acre Lot
Room Information
| Room Name |
| Great Room |
| Media Room |
Listing Office: Graber Realty Group LLC

Last Updated: August - 10 - 2026
This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. Copyright 2026 Beaches Multiple Listing Service, Inc. All rights reserved. Information Not Guaranteed and Must Be Confirmed by End User. Site contains live data.

Seller's Property Disclosure (Signed by