660 S Mashta Drive, Key Biscayne, FL 33149

$13,800,000

Virtual Tour

https://www.propertypanorama.com/instaview/mia/A11526068

kitchenette in guest BR w/private entance

Property Type: Residential Bedrooms: 7 Baths: 9 Square Footage: 6,195 Status: Closed

Current Price: $13,800,000 List Date: 1/19/2024 Last Modified: 12/25/2025

Overview

Description

Don't miss this opportunity to own a rarely available wide bay front home on S Mashta Dr featuring 100 ft of water frontage & unobstructed views. This large 2 story home has an eat in kitchen, 3 door wine chiller & separate walk-in pantry/storage area. An adjacent covered patio is separated from the kitchen by multi sliding impact doors that open & stack against each other expanding your entertaining space & bringing the outside in. The primary BR has 2 full baths & 3 walk-in closets. There are an additional 4 BR's & 4 baths on the first floor, one of which has a kitchenette & a separate entrance. A mosaic staircase leads to 2 additional bedrooms w/ensuite baths & a large shared balcony Additional amenities include heated pool, cabana bath & an expansive patio for entertaining.

Listing Details MLS# A11526068

General Property Information

Property Sub Type: Single Family Residence
Bedrooms Total: 7
Bathrooms Total: 9
Bathrooms Full: 8
Bathrooms Half: Yes
Building Area Main: 6195
Living Area Main: 5043
Adjusted Area Main: 5218
Accessibility Features YN: Yes
Year Built: 1965
Lot Size Area: 15000
Lot Size Acres: 0.34
Senior Community YN: Yes
Waterfront YN: Yes
Water Frontage Feet: 100
Outdoor Living Spaces YN: Yes
Stories Total: 2
Direction Faces: Northeast
Pool Private YN: Yes

Property Features

Accessibility Features: Accessible Approach with Ramp; Accessible Doors; Accessible Full Bath; Accessible Hallway(s) Dining Area: Eat-In Kitchen Flooring: Marble Leasing Permitted Details: Okay To Lease Parking Features: Driveway Property Condition: Resale Appliances: Dishwasher; Disposal; Dryer; Electric Range; Oven; Refrigerator; Washer Construction Materials: CBS Cooling: Electric Fencing: Fenced Heating: Electric Interior Features: Built-in Features; Pantry; Walk-In Closet(s) Levels: Two Listing Terms: Cash; Conventional Pool Features: Heated; Pool Bath Possession: Negotiable Road Frontage Type: Public Road Roof: Other Security Features: Security System Sewer: Public Sewer Sprinkler Description: Auto Sprinkler Tax Information: Tax Reflects No Exemptions Water Access: Other Water Source: Public Water View: Bay Waterfront Features: Bayfront; Seawall; No Fixed Bridges Showing Requirements: 24 Hour Notice; Appointment Only; Call Listing Agent Outdoor Living Spaces: Deck; Patio Contingencies: Other Room Types: Laundry Acreage Description: 1/4 To Less Than 1/2 Acre Lot

Contract Information

Comp Sale YN: No
Original List Price: 21950000
Occupant Type: Call Listing Agent

Location and Legal

Country: United States
County Or Parish: Miami-Dade
County Parish Name: Miami-Dade
Street Number: 660
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
Area: 2520
Parcel Number: 2452050080300
Subdivision Number: 8
Zoning: 2001
Flood Zone: AE

Financial Information

Membership Fee Required YN: No
Tax Annual Amount: 130181
Tax Year: 2023
Tax Legal Description: 5-6 55 42 MASHTA ISLAND PB 60-93 LOT 7 BLK 3 LOT SIZE 100.000 X 150 OR 18163-4481 0698 1

Status Change Information

Major Change Timestamp: 2025-03-28T07:39:08Z
Major Change Type: Status Change
Price Change Timestamp: 2024-09-16T14:20:39Z
Status Change Date: 2025-03-31
Under Contract Date: 2025-02-18
Close Date: 2025-03-28
Close Price: 13800000
Buyer Financing: Cash

More Information

Entry Information

Entry Level: Yes

Leasing Permitted Details

Leasing Permitted YN: Yes
Okay To Lease: Yes

Buyer Details

Intended Use: Unknown/Withheld

Concessions

Seller Concessions: No

Price Calculations

Current Price To SqFt: 2736.47

Section Details

Parcel Number MLX: 0300

Originating Details

Originating System Key: 391419438
Originating System ID: M00000151

Office/Member Information

DXORIGMLSID: SEF

Accessibility Features

Accessible Approach with Ramp: Yes
Accessible Doors: Yes
Accessible Full Bath: Yes
Accessible Hallway(s): Yes

Dining Area

Eat-In Kitchen: Yes

Flooring

Marble: Yes

Parking Features

Driveway: Yes

Property Condition

Resale: Yes

Fencing

Fenced: Yes

Possession

Negotiable: Yes

Sewer

Public Sewer: Yes

Heating

Electric: Yes

Sprinkler Description

Auto Sprinkler: Yes

Water Access

Other: Yes

Water View

Bay: Yes

Appliances

Dishwasher: Yes
Disposal: Yes
Dryer: Yes
Electric Range: Yes
Oven: Yes
Refrigerator: Yes
Washer: Yes

Construction Materials

CBS: Yes

Interior Features

Built-in Features: Yes
Pantry: Yes
Walk-In Closet(s): Yes

Levels

Two: Yes

Listing Terms

Cash: Yes
Conventional: Yes

Pool Features

Heated: Yes
Pool Bath: Yes

Road Frontage Type

Public Road: Yes

Roof

Other: Yes

Security Features

Security System: Yes

Water Source

Public: Yes

Waterfront Features

Bayfront: Yes
Seawall: Yes
No Fixed Bridges: Yes

Cooling

Electric: Yes

Showing Requirements

24 Hour Notice: Yes
Appointment Only: Yes
Call Listing Agent: Yes

Master Bedroom/Bath

2 Master Baths: Yes
Master Bdrm - Ground: Yes
Separate Shower: Yes

Pool Size Details

Pool Size (WxL): No

Tax Information

Tax Reflects No Exemptions: Yes

Outdoor Living Spaces

Deck: Yes
Patio: Yes

Contingencies

Other: Yes

Room Types

Laundry: Yes

Acreage Description

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

Room Information

Room Name
Laundry

Listing Office: Coldwell Banker Realty

Last Updated: December - 25 - 2025

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660 S Mashta Drive, Key Biscayne, FL 33149 (MLS# A11526068)