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Located at 520 S Mashta Dr, Key Biscayne, Florida 33149, this Single Family Home is for Sale with a price of $18,900,000 USD. The property was built in 1961, includes 5 bedrooms, has 4 full baths. This listing has 3,085 Sq.Ft. of interior space. See all Homes for Sale in Key Biscayne.
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Schedule Property Tour

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CONSENT. By proceeding, you consent to receive calls and texts at the number you provided, including marketing by autodialer and prerecorded and artificial voice, and email, from Realtor.com (Move Sales, Inc.), its affiliates, and their network service providers, about your inquiry and other home-related matters, but not as a condition of any purchase. Msg/data rates may apply. This consent applies even if you are on a corporate, state, or national Do Not Call list.

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46. 520 S Mashta Dr
1. 520 S Mashta Dr
2. 520 S Mashta Dr
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FloridaKey Biscayne520 S Mashta Dr

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Description

520 S Mashta Dr,

Key Biscayne, FL 33149

Seize the rare chance to create your dream estate on one of the largest lots in Key Biscayne's prestigious Mashta Island community. This 22,140-square-foot property features 138 feet of pristine water frontage, offering breathtaking open-water viewsan ideal backdrop for a grand residence. Collaborate with the renowned Corazzini & Associates, known for their award-winning designs that merge elegance with functionality. Enjoy spectacular sunsets visible throughout your home, perfect for relaxation and entertaining. Included are fully approved plans and permits for a stunning 8-bedroom, 8.5-bath, 10,000-square-foot estate, ensuring a seamless start to your vision. Dont miss this once-in-a-lifetime opportunity to establish a legacy in one of South Florida's most prestigious enclaves.

This is an Active listing.

Broker Office Phone Number: 305-695-6300

Copyright © 2025Miami Association of REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Amenities

  • Bedroom on Main Level
  • Tile Flooring
  • Waterfront
  • Driveway
  • Garage
Listing By: Douglas Elliman via Data Source: Miami Association of REALTORS® 
5
Bedrooms
4
Full Baths
$18,900,000
price
$6,126
Price Per Sqft
$179,582
Annual taxes
Single Family Home
Property type
1961
Year Built
459410
Web Id
A11684094
MLS ID
269
Days Posted

Price History

datepricevariancetype
1/6/2025$18,900,000 5.50 %decreased
10/29/2024$20,000,000-Listed
more info
3,085 Sq Ft.
interior
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    520 S Mashta Dr
    Key Biscayne, FL 33149

    $18,900,000
    5 bd4 ba