591 N Mashta Drive, Key Biscayne, FL 33149

$15,500,000

Virtual Tour

https://www.propertypanorama.com/instaview/mia/A11924175

Property Type: Residential Bedrooms: 4 Baths: 5 Square Footage: 6,219 Status: Active Under Contract

Current Price: $15,500,000 List Date: 11/27/2025 Last Modified: 6/01/2026

Overview

Description

BEAUTIFUL AND UNIQUE WATERFRONT HOME ON EXCLUSIVE MASHTA ISLAND, ON DESIRABLE NORTH MASHTA DR IN KEY BISCAYNE. ELEVATED AND VERY COMFORTABLE 4BR/4.5BA + MAID’S QUARTERS WITH APPROX. 4,290 SQ FT UNDER A/C, SITTING ON A LARGE AND PRIVATE 15,184 SQ FT LOT, IDEAL FOR ENJOYING WITH FAMILY AND FRIENDS.APPROX. 50 FT DOCK WHERE THE OWNERS HAVE DOCKED BOATS OF AROUND 78 FT, WITH DEEP WATER OF ABOUT 8 FT EVEN AT LOW TIDE – A RARE TRUE DEEP-WATER ACCESS ON THE ISLAND. NORTH-FACING CANAL KEEPS THE HOUSE AND OUTDOOR AREAS PLEASANT AND COOLER ALL YEAR ROUND. EASY TO SHOW. BRING YOUR QUALIFIED BUYERS AND BEST OFFERS.

Listing Details MLS# A11924175

General Property Information

Property Sub Type: Single Family Residence
Bedrooms Total: 4
Bathrooms Total: 5
Bathrooms Full: 4
Bathrooms Half: Yes
Building Area Main: 6219
Living Area Main: 4290
Adjusted Area Main: 4934
Year Built: 1960
Garage YN: Yes
Garage Spaces: 2
Covered Spaces: 2
Lot Size Area: 15184
Lot Size Acres: 0.35
Senior Community YN: No
Waterfront YN: Yes
Outdoor Living Spaces YN: Yes
Stories Total: Yes
Direction Faces: North
Pool Private YN: Yes
Water Frontage Feet: 0

Property Features

Flooring: Wood; Other Property Condition: Resale Appliances: Dishwasher; Disposal; Dryer; Gas Range; Microwave; Trash Compactor Water Heater Details: Electric Water Heater Construction Materials: Concrete Block - No Stucco Cooling: Central Air Heating: Central Levels: One Listing Terms: Cash; Conventional; FHA; FHA-VA Approved Pool Features: In Ground Possession: Close Of Escrow Restrictions: See Remarks Roof: Aluminum Sewer: Septic Tank Special Information: Sold As-Is Tax Information: Tax Reflects No Exemptions View: Water Water Access: None Water Source: Public Water View: Canal Waterfront Features: Canal Front Showing Requirements: Call Listing Agent Outdoor Living Spaces: Deck Acreage Description: 1/4 To Less Than 1/2 Acre Lot

Contract Information

Comp Sale YN: No
Original List Price: 16950000
Occupant Type: Call Listing Agent

Location and Legal

Country: United States
County Or Parish: Miami-Dade
County Parish Name: Miami-Dade
Street Number: 591
Street Direction Prefix: N
Street Name: Mashta
Street Suffix: Drive
City Name: Key Biscayne
Municipal Code: 24
State Or Province: FL
Postal Code: 33149
Postal Code +4: 1718
Postal Zip: 33149
Subdivision Name: MASHTA ISLAND A REPLAT OF
Area: 2520
Elementary School: Key Biscayne K-8
Middle Or Junior School: Ponce De Leon
High School: Coral Gables
Parcel Number: 2452050090040
Subdivision Number: 9
Zoning: 2001
Flood Zone: AE

Financial Information

Membership Fee Required YN: No
Tax Annual Amount: 112793
Tax Year: 2025
Tax Legal Description: MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 11 BLK 1 LOT SIZE 104.000 X 146 OR 15577-14 0982 1 COC 22096-0549 03 2004 1

Status Change Information

Major Change Timestamp: 2026-05-28T22:48:58Z
Major Change Type: Status Change
Price Change Timestamp: 2026-03-20T21:55:51Z
Status Change Date: 2026-05-28
Under Contract Type: Active Under Contract
Under Contract Date: 2026-05-04

More Information

Entry Information

Entry Level: Yes

Section Details

Parcel Number MLX: 0040

Originating Details

Originating System Key: 423871108
Originating System ID: M00000151

Office/Member Information

DXORIGMLSID: SEF

Amenities

None: Yes

Flooring

Wood: Yes
Other: Yes

Property Condition

Resale: Yes

Possession

Close Of Escrow: Yes

Sewer

Septic Tank: Yes

Special Information

Sold As-Is: Yes

View

Water: Yes

Heating

Central: Yes

Water Access

None: Yes

Water View

Canal: Yes

Appliances

Dishwasher: Yes
Disposal: Yes
Dryer: Yes
Gas Range: Yes
Microwave: Yes
Trash Compactor: Yes

Construction Materials

Concrete Block - No Stucco: Yes

Levels

One: Yes

Listing Terms

Cash: Yes
Conventional: Yes
FHA: Yes
FHA-VA Approved: Yes

Pool Features

In Ground: Yes

Roof

Aluminum: Yes

Water Source

Public: Yes

Waterfront Features

Canal Front: Yes

Water Heater Details

Electric Water Heater: Yes

Cooling

Central Air: Yes

Showing Requirements

Call Listing Agent: Yes

Master Bedroom/Bath

Bedroom On Entry Level: Yes

Pool Size Details

Pool Size (WxL): No

Restrictions

See Remarks: Yes

Tax Information

Tax Reflects No Exemptions: Yes

Outdoor Living Spaces

Deck: Yes

Acreage Description

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

Listing Office: EXP Realty LLC

Last Updated: June - 01 - 2026

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591 N Mashta Drive, Key Biscayne, FL 33149 (MLS# A11924175)