500 S Mashta Drive, Key Biscayne, FL 33149

$17,400,000

Virtual Tour

https://player.vimeo.com/external/391001603.hd.mp4?s=254a474f1b1c77ab4b3b076c63ec074c6a341593&profile_id=175

Illuminated infinity edge pond, pool and spa.

Modern architecture facade and 4-car glass door garage.

Master bedroom private terrace with ocean views.

Evening view of 59'x6' pond, 46'x16' pool and 7'x8' attached spa.

Rear facade featuring a three-story curved glass curtain wall.

Patio area featuring a retractable awning.

Panoramic ocean views from patio, pond and pool deck.

Ocean views from third floor bedroom terrace.

Gardens by landscape architect Mercedes Porcari.

Property Type: Residential Bedrooms: 6 Baths: 8 Square Footage: 14,969 Status: Closed

Current Price: $17,400,000 List Date: 2/04/2020 Last Modified: 12/24/2025

Overview

Description

Enjoy ocean and sunset views from this 2014 Mashta Island estate on a 23,814 SqFt oversized lot with 138ft of water frontage. This custom-built home, inspired by Modern architect Richard Meier, features pure geometric lines and integrated open spaces with an emphasis on natural light. Unique features include a 3-story curved glass curtain wall, 14 skylights over a 27-ft high atrium, NanaWall folding glass doors, elevator, gym, dock, staff quarters, 4-car garage, generator and smart home technology.

Listing Details MLS# A10811961

General Property Information

Property Sub Type: Single Family Residence
Bedrooms Total: 6
Bathrooms Total: 8
Bathrooms Full: 6
Bathrooms Half: 2
Building Area Main: 14969
Living Area Main: 10820
Adjusted Area Main: 11149
Year Built: 2014
Garage YN: Yes
Attached Garage YN: Yes
Garage Spaces: 4
Covered Spaces: 4
Lot Size Area: 23814
Lot Size Acres: 0.55
Lot Size Dimensions: 126x189
Senior Community YN: Yes
Waterfront YN: Yes
Water Frontage Feet: 138
Outdoor Living Spaces YN: Yes
Stories Total: 3
Direction Faces: Southwest
Pool Private YN: Yes
Spa YN: Yes
Furnished: Unfurnished

Property Features

Dining Area: Breakfast Area; Eat-In Kitchen; Formal Dining Exterior Features: Awning(s); Lighting Flooring: Marble; Wood Parking Features: Garage Door Opener; Guest; Attached; Attached Garage; Garage Property Condition: New Construction Appliances: Dishwasher; Disposal; Dryer; Gas Range; Microwave; Refrigerator; Washer Water Heater Details: Electric Water Heater; Gas Water Heater Boat and Dock Features: Hoist/Davit; Private Dock Construction Materials: CBS Cooling: Central Air; Electric Fencing: Fenced Heating: Central; Electric Interior Features: Built-in Features; Central Vacuum; Closet Cabinetry; Elevator; Entrance Foyer; High Ceilings; Storage; Walk-In Closet(s) Levels: Three Or More Listing Terms: Cash; Conventional Lot Features: Oversized Lot Pool Features: Heated; Pool Sweep; Pool/Spa Combo Possession: Negotiable Restrictions: No Restrictions Roof: Metal Security Features: Security System; Smoke Detector(s) Sewer: Public Sewer Special Information: Sold As-Is Sprinkler Description: Auto Sprinkler Tax Information: City/County Utilities: Cable Available Water Access: Ocean Access Water Source: Public Water View: Bay; Direct Ocean Waterfront Features: Bayfront; Ocean Front; Seawall Window Features: Blinds; Skylight(s); Tinted Windows Showing Requirements: Call Listing Agent Outdoor Living Spaces: Deck; Patio Contingencies: None Room Types: Atrium; Den; Family Room; Laundry; Maid/In-Law Quarters Acreage Description: 1/2 To Less Than 1 Acre Lot

Contract Information

Comp Sale YN: No
Original List Price: 18200000
Occupant Type: Owner

Location and Legal

Country: United States
County Or Parish: Miami-Dade
County Parish Name: Miami-Dade
Street Number: 500
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: 1733
Postal Zip: 33149
Subdivision Name: MASHTA ISLAND A REPLAT OF
Area: 2520
Elementary School: Key Biscayne K-8
Middle Or Junior School: Madison
Parcel Number: 2452050090200
Subdivision Number: 9
Zoning: 2001
Flood Zone: AE
Directions: Once you enter the village of Key Biscayne, turn right onto Harbor Drive. After 1.6 miles, turn right onto W Mashta Drive. After 0.2 miles, 500 S Mashta will be straight ahead of you.

Financial Information

Membership Fee Required YN: No
Tax Annual Amount: 208849
Tax Year: 2015
Tax Legal Description: 5-6 55 42 PB 65-65 MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 19 BLK 3 LOT SIZE 126.000 X 189 COC 23768-4016 09 2005 1

Status Change Information

Major Change Timestamp: 2021-04-13T23:44:28Z
Major Change Type: Status Change
Price Change Timestamp: 2021-02-22T16:00:41Z
Status Change Date: 2021-04-27
Under Contract Date: 2021-02-16
Close Date: 2021-04-13
Close Price: 17400000
Buyer Financing: Cash

More Information

Boat and Dock Information

Dock: Yes

Pool Size Details

Pool Size (WxL): 46x16

Storm Protection

Impact Glass: Partial

Buyer Details

Intended Use: Unknown/Withheld

Concessions

Seller Concessions: No

Price Calculations

Current Price To SqFt: 1608.13

Section Details

Parcel Number MLX: 0200

Originating Details

Originating System Key: 342860384
Originating System ID: M00000151

Office/Member Information

DXORIGMLSID: SEF

Amenities

None: Yes

Dining Area

Breakfast Area: Yes
Eat-In Kitchen: Yes
Formal Dining: Yes

Exterior Features

Awning(s): Yes
Lighting: Yes

Flooring

Marble: Yes
Wood: Yes

Parking Features

Garage Door Opener: Yes
Guest: Yes
Attached: Yes
Attached Garage: Yes
Garage: Yes

Property Condition

New Construction: Yes

Fencing

Fenced: Yes

Possession

Negotiable: Yes

Sewer

Public Sewer: Yes

Special Information

Sold As-Is: Yes

Utilities

Cable Available: Yes

Heating

Central: Yes
Electric: Yes

Sprinkler Description

Auto Sprinkler: Yes

Water Access

Ocean Access: Yes

Water View

Bay: Yes
Direct Ocean: Yes

Window Features

Blinds: Yes
Skylight(s): Yes
Tinted Windows: Yes

Appliances

Dishwasher: Yes
Disposal: Yes
Dryer: Yes
Gas Range: Yes
Microwave: Yes
Refrigerator: Yes
Washer: Yes

Construction Materials

CBS: Yes

Interior Features

Built-in Features: Yes
Central Vacuum: Yes
Closet Cabinetry: Yes
Elevator: Yes
Entrance Foyer: Yes
High Ceilings: Yes
Storage: Yes
Walk-In Closet(s): Yes

Levels

Three Or More: Yes

Listing Terms

Cash: Yes
Conventional: Yes

Lot Features

Oversized Lot: Yes

Pool Features

Heated: Yes
Pool Sweep: Yes
Pool/Spa Combo: Yes

Roof

Metal: Yes

Security Features

Security System: Yes
Smoke Detector(s): Yes

Water Source

Public: Yes

Waterfront Features

Bayfront: Yes
Ocean Front: Yes
Seawall: Yes

Water Heater Details

Electric Water Heater: Yes
Gas Water Heater: Yes

Boat and Dock Features

Hoist/Davit: Yes
Private Dock: Yes

Cooling

Central Air: Yes
Electric: Yes

Showing Requirements

Call Listing Agent: Yes

Master Bedroom/Bath

Bidet: Yes
Dual Sinks: Yes
Master Bdrm - Sitting: Yes
Master Bdrm - Upstairs: Yes
Separate Shower: Yes
Separate Tub: Yes
Whirlpool Tub: Yes

Restrictions

No Restrictions: Yes

Tax Information

City/County: Yes

Outdoor Living Spaces

Deck: Yes
Patio: Yes

Contingencies

None: Yes

Room Types

Atrium: Yes
Den: Yes
Family Room: Yes
Laundry: Yes
Maid/In-Law Quarters: Yes

Acreage Description

1/2 To Less Than 1 Acre Lot: Yes

Room Information

Room Name
Atrium
Den
Family Room
Maid/In-Law Quarters
Laundry

Listing Office: One Sotheby's International Realty

Last Updated: December - 24 - 2025

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