640 S Mashta Drive, Key Biscayne, FL 33149 (MLS# A11611809)

640 S Mashta Drive, Key Biscayne, FL 33149

$12,375,000

Virtual Tour

https://youtu.be/Ys1MRolsLsE

Property Type: Residential Bedrooms: 5 Baths: 5 Square Footage: 4,990 Status: Closed

Current Price: $12,375,000 List Date: 6/25/2024 Last Modified: 8/10/2026

Overview

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!

Listing Details MLS# A11611809

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: Yes
Attached Garage YN: Yes
Garage Spaces: 2
Covered Spaces: 2
Lot Size Area: 15000
Lot Size Acres: 0.34
Senior Community YN: No
Waterfront YN: Yes
Water Frontage Feet: 100
Stories Total: 2
Direction Faces: East
Pool Private YN: Yes

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

Contract Information

Comp Sale YN: No
Original List Price: 15000000
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

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

More Information

Entry Information

Entry Level: Yes

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

Room Information

Room Name
Great Room
Media Room

Documents

Seller's Property Disclosure (Signed by ›

Seller's Property Disclosure (Trustee 1) ›

Seller's Property Disclosure (Trustee 2) ›

Seller's 4Point Report ›

Seller's Wind Mitigation Report ›

Listing Office: Graber Realty Group LLC

Last Updated: August - 10 - 2026

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