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481 S Mashta DriveKey Biscayne, FL 33149

For Sale

$20,900,000

Smart Buyer Rebate $209,000

Offering approximately 8,500 square feet of construction, this spectacular waterfront estate on coveted Mashta Island is a rare expression of space, privacy, and coastal elegance. Fully remodeled and designed for effortless indoor-outdoor living, this three-level contemporary residence enjoys direct ocean access, panoramic views of Smugglers Cove and Biscayne Bay, and constant ocean breezes that create a true sense of serenity.
Set on a 17,012-square-foot lot in one of Key Biscayne’s most exclusive and tranquil enclaves, the property is surrounded by water, light, and lush tropical landscaping, offering remarkable privacy and a peaceful island atmosphere. The residence features 8,544 square feet of total area, including garage and terraces, with expansive open living spaces, refined finishes, abundant natural light, and impeccable craftsmanship throughout. The flexible floor plan allows for effortless reconfiguration to accommodate additional rooms and customized living areas. World-class amenities include a private dock for boating enthusiasts, resort-style pool, summer kitchen, spectacular covered entertainment level, elevator, gym, garage, and extra parking, creating an exceptional setting for both grand entertaining and everyday enjoyment. This is more than a home...it is a private waterfront sanctuary, offering the rare opportunity to experience the very best of island living in one of Key Biscayne’s most prestigious locations.

Listed by Brigitte Nachtigall

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License #0542022

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One Sotheby's International Realty

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305-710-9664

Listed by Jorge Boj

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License #3016066

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One Sotheby's International Realty

Last updated January 27, 2026

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Source: MIAMIRE #A11779615

Listing Facts

  • TypeSingle-family
  • NeighborhoodVillage of Key Biscayne
  • Bedrooms5
  • Bathrooms7
  • Days on Prevu298
  • Taxes$84,924/year
  • Size5,940 sqft
  • Price per sqft$3,519

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Pets Allowed
  • Elevator
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

01/05/2026
Price Decreased
$20,900,000
12/03/2025
Price Decreased
$21,780,000
11/03/2025
Price Decreased
$22,470,000
09/09/2025
Price Increased
$23,900,000
04/08/2025
Listed by One Sotheby's International Realty
$22,900,000

Property Details for 481 S Mashta Drive

Association

Amenities

  • Community Features: Public Road, Voluntary Hoa
  • Pets Allowed: Yes

Exterior

Construction

  • Roof: Barrel Roof
  • Structure Type: House
  • Window Features: Blinds
  • Year Built: 2017
  • Year Built Details: Resale
  • Architectural Style: Attached, Three Or More Stories
  • Building Name: SMUGGLERS COVE
  • Construction Materials: CBS Construction
  • Entry Location: Foyer
  • Exterior Features: Built-In Grill, Open Balcony

Features

  • Direction Faces: South
  • Patio And Porch Features: Open Balcony, Open Porch, Patio
  • Pool Features: In Ground
  • View: Canal, Water
  • Waterfront Features: Ocean Access, Canal Front, Canal Width 1-80 Feet
  • Waterfront: Yes

Measurements

  • Building Area Total: 8,544
  • Building Area Units: Square Feet
  • Lot Features: 1/4 To Less Than 1/2 Acre Lot
  • Lot Size Square Feet: 17,012
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 24-52-05-017-0110
  • Tax Annual Amount: $84,924.00
  • Tax Year: 2024

Interior

Features

  • Appliances: Dishwasher, Disposal, Dryer, Electric Water Heater, Ice Maker, Microwave, Electric Range, Refrigerator, Wall Oven, Washer
  • Flooring: Ceramic Floor, Wood
  • Interior Features: First Floor Entry, Built-in Features, Closet Cabinetry, Elevator, Entrance Foyer, Other, Pantry, Walk-In Closet(s), Den/Library/Office, Family Room, Utility/Laundry In Garage

Measurements

  • Living Area: 5,940
  • Living Area Units: Square Feet

Rooms

  • Bathrooms Full: 6
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 7
  • Bedrooms Total: 5

Other

Location

  • Subdivision Name: SMUGGLERS COVE

Parking

Parking

  • Attached Garage: Yes
  • Covered Spaces: 2
  • Garage Spaces: 2
  • Garage: Yes
  • Open Parking: Yes
  • Parking Features: Covered, Driveway, Paver Block

Schools

Elementary School

  • Elementary School: Keybiscayne

High School

  • High School: Mast Academy

Utilities

Equipment

  • Cooling: Electric
  • Has Cooling: Yes
  • Heating: Electric
  • Has Heating: Yes
  • Laundry Features: In Garage
  • Other Equipment: Automatic Garage Door Opener, Elevator
  • Sewer: Public Sewer
  • Water Source: Municipal Water

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 5 bedrooms and 7 bathrooms in this single-family home at 481 S Mashta Drive.

What schools are nearby to 481 S Mashta Drive?

Nearby schools include the Keybiscayne Elementary School and Mast Academy High School.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 481 S Mashta Drive.

What are the annual taxes for 481 S Mashta Drive?

Annual taxes for this single-family home are estimated at $84,924.

How does 481 S Mashta Drive compare to other single-family homes in Village of Key Biscayne?

This single-family home is listed 120% above the average price for single-family homes in Village of Key Biscayne and has been on the market for 185 more days than the typical home in this area.

What building or home owners association is the single-family home part of?

This single-family home is in the SMUGGLERS COVE building.

What is the square footage on this single-family home?

According to the MLS, this listing is 5,940 sqft.

481 S Mashta Drive is a 5-bedroom, 7-bath single-family home for sale in Key Biscayne FL 33149. Listed on Prevu for 298 days at $20,900,000. This includes a recent price decrease of $880,000. This home features 5,940 square feet of living space, located in Village of Key Biscayne. The median listing price for single-family homes in this area is $2,325,000. Nearby schools include Keybiscayne Elementary School and Mast Academy High School. Property amenities include private outdoor space, dishwasher, pets allowed, elevator, parking, swimming pool, and washer/dryer. View other single-family home listings in Key Biscayne.

Based on information from Miami Association of REALTORS and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.