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

640 S Mashta Drive, Key Biscayne, FL 33149

$12,375,000
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: 2/12/2026

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
Okay To Lease
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

Office/Member Information

DXORIGMLSID
SEF

Amenities

Boating
Yes

Dining Area

Eat-In Kitchen
Yes
Formal Dining
Yes

Exterior Features

Lighting
Yes

Flooring

Tile
Yes
Wood
Yes

Parking Features

Circular Driveway
Yes
Covered
Yes
Driveway
Yes
Attached
Yes
Attached Garage
Yes
Garage
Yes

Property Condition

Resale
Yes

Fencing

Fenced
Yes

Possession

Negotiable
Yes

Sewer

Public Sewer
Yes

Utilities

Cable Available
Yes

Heating

Other
Yes

Water Access

No Fixed Bridge
Yes

Water View

Bay
Yes
Ocean
Yes

Appliances

Dishwasher
Yes
Dryer
Yes
Electric Range
Yes
Refrigerator
Yes
Washer
Yes

Construction Materials

Block
Yes
CBS
Yes

Interior Features

Bedroom Layout - Split
Yes
Walk-In Closet(s)
Yes

Levels

Two
Yes

Listing Terms

Cash
Yes
Conventional
Yes

Pool Features

Concrete
Yes
In Ground
Yes
Screen Enclosure
Yes

Roof

Flat
Yes
Tile
Yes

Water Source

Public
Yes

Waterfront Features

Bayfront
Yes
Ocean Front
Yes

Water Heater Details

Electric Water Heater
Yes

Boat and Dock Features

Private Dock
Yes

Cooling

Central Air
Yes

Showing Requirements

Call Listing Agent
Yes
Showing Service
Yes

Master Bedroom/Bath

Master Bdrm - Ground
Yes
Master Bdrm - Sitting
Yes

Pets Allowed YN

Yes
Yes

Pets Allowed

No Restrictions
Yes

Contingencies

Inspection
Yes

Room Types

Great Room
Yes
Media Room
Yes

Acreage Description

1/4 To Less Than 1/2 Acre Lot
Yes

Room Information

Room Name
Great Room
Media Room

Documents

IDX
Listing Office: Graber Realty Group LLC
Last Updated: February - 12 - 2026
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