481 S Mashta Drive Key Biscayne, FL $ 21,780,000
481 S Mashta Drive
$ 21,780,000
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481 S Mashta Drive

Key Biscayne, FL, 33149
$ 21,780,000
Bedrooms5 Baths6.1 Sq 5,940

Monthly Estimate*

$ 135,879

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Single Family Home for sale in Key Biscayne, FL

for $21,780,000 with 5 bedrooms and 6 full baths, 1 half bath. This 5,940 square foot home was built in 1989.

Discover perfection on coveted Mashta Island...this fully remodeled waterfront estate offers seamless, direct ocean access and mesmerizing views of Smugglers Cove and Biscayne Bay. Designed for ultimate indoor-outdoor living, this 3-level modern and elegant masterpiece features 8,544 SF total of actual area which includes garage and terraces and sits on a 17,012 SF lot with sun-filled contemporary spaces, top finishes, natural light throughout and exceptional craftsmanship. Featuring 5 bedrooms + office which can easily be converted to a 6th bedroom, 6.5 baths, elevator, garage, gym + extra parking, private dock ideal for boaters, summer kitchen, resort-style pool, and a spectacular covered entertainment level... this home is your own private waterfront resort in paradise.

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Single Family Active

Price

$ 21,780,000

Bedrooms

5

Full Bath

6

Half Bath

1

Property Type

Single Family

Taxes

$ 84,924

Style

Year Built

1989

Town/City

Key Biscayne

County/Region

Miami-Dade

MLS | Web ID

A11779615

Features
General
Sewer Public Sewer
Heating Electric
Cooling Electric
Utilities Cable Available
Possession Closing & Funding
Roof Barrel
Appliances Built-In Oven Dryer Dishwasher Electric Range Electric Water Heater Disposal Ice Maker Microwave Refrigerator Washer
Garage Spaces 2
Patio/Porch Features Balcony Open Patio Porch
Pool Features In Ground Pool
Restrictions OK To Lease
Construction Materials Block
Pets Allowed No Pet Restrictions Yes
Year Built 1989
View Canal Water
Levels Three Or More
Property Subtype Single Family Residence
Tax Year 2024
Waterfront Features Canal Access Canal Front Ocean Access
Community Features Home Owners Association
County Miami-Dade
Property Type Residential
Attached Garage true
Subdivision Name SMUGGLERS COVE
Facing Direction South
Garage Y/N true
Total Rooms 0
Full Baths 6
Special Listing Conditions Listed As-Is
Status Active
High School Mast Academy
City Key Biscayne
Disclosures Flood Plain Disclosure
Senior Community Y/N false
Zoning Description 2001
MLS Area 52
Lot Size Units Square Feet
Lot Size Square Feet 17012
Listing Terms Cash Conventional
Elementary School Keybiscayne
Year Built Details Resale
Tax Annual Amount 84924
Lease Considered Y/N false
Standard Status Active
Occupancy Type Tenant
Property Sub Type Additional Single Family Residence
Legal Description 5 55 42 SMUGGLERS COVE PB 78-83 LOT 11 LOT SIZE 17012 SQ FT OR 19428-0237 12/2000 1
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Interior
Interior Amenities Bidet Built-in Features Breakfast Area Closet Cabinetry Dining Area Separate/Formal Dining Room Dual Sinks Entrance Foyer First Floor Entry Pantry Sitting Area in Primary Separate Shower Upper Level Primary Walk-In Closet(s) Elevator
Flooring Ceramic Tile Hardwood Wood
Furnished Y/N Unfurnished
Air Conditioning Y/N true
Heating Y/N true
Window Features Blinds
Half Baths 1
Laundry Features In Garage
Total Bedrooms 5
Total Baths 7
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Exterior
Exterior Amenities Balcony Outdoor Grill Porch Patio
Parking Features Attached Covered Driveway Garage Paver Block Garage Door Opener
Lot Features 1/4 to 1/2 Acre Lot Sprinklers Automatic
Water Source Public
Lot Size Area 17012
Building Area Total 8544
Frontage Length 0
Waterfront Y/N true
Covered Spaces 2
Road Frontage Type City Street
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* Excluded Features
List By
One Sotheby's International Realty

Broker

Brigitte@bnachtigall.com

Email

Affordability Calculator

$142,956
Per Month
95%
5%
0%
Monthly Principal & Interest
$135,879
Monthly Property Taxes
$7,077
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
4808084 Elementary School
315003 Middle School
Mast Academy High School High School
Pricing History
DatePricePrice ChangeDescription
12/3/2025$21,780,000 -3.07% Price Down
11/3/2025$22,470,000 -5.98% Price Down
10/22/2025$23,900,000 Listed Price

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481 S Mashta Drive, Key Biscayne, FL, 33149 is a Single Family Home for sale at $21,780,000 with 5,940 sqft. 481 S Mashta Drive has 5 bedrooms, 6.1 baths, and was built in 1989. The property's zip code is 33149 which is in Key Biscayne, FL