520 S Mashta Dr
Key Biscayne, FL
Listing Details
- $19,900,000
- MLS# A12071221
- Type Residential - Single Family
- Status Active
Description
Seize a rare opportunity to create a landmark waterfront estate on one of the largest residential lots in Key Biscaynes exclusive Mashta Island enclave. Spanning an extraordinary 22,140 square feet, this exceptional property offers 138 feet of pristine water frontage and sweeping open water views, providing an unparalleled setting for a world class residence.Plans by renowned architect, Pablo Corazzini of Vitalini Corazzini Architects, are available to the buyer, offering a thoughtfully conceived vision that takes full advantage of the propertys remarkable scale, premier waterfront setting, and spectacular sunsets. The proposed design creates... Read more
Key Features
- First Floor Entry
- Split Bedroom
- Family Room
- Other Subdivision - See Remarks
Gallery
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Contact the Agent
Luxury Homes Specialist
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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 10/07/2026. The listing information on this page last changed on 10/07/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Wed 10/07/2026 12:05:47 AM EST) or Miami MLS (last updated Tue 10/06/2026 11:58:48 PM EST) or Stellar MLS (last updated Tue 10/06/2026 11:54:58 PM EST) or SPC MLS (last updated Tue 10/06/2026 11:20:21 PM EST) or Martin MLS (last updated Tue 10/06/2026 11:38:13 PM EST) or Indian River MLS (last updated Tue 10/06/2026 11:30:07 PM EST) or Northeast Florida MLS (last updated Tue 10/06/2026 11:58:48 PM EST) or Beaches MLS (last updated Tue 10/06/2026 11:57:56 PM EST) or Naples MLS (last updated Tue 10/06/2026 11:40:17 PM EST) or PBI MLS (last updated Tue 10/06/2026 11:21:24 PM EST) or Florida Keys MLS (last updated Tue 10/06/2026 8:31:34 PM EST). Real estate listings held by brokerage firms other than Illustrated Properties may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 10/07/2026. The listing information on this page last changed on 10/07/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Wed 10/07/2026 12:05:47 AM EST) or Miami MLS (last updated Tue 10/06/2026 11:58:48 PM EST) or Stellar MLS (last updated Tue 10/06/2026 11:54:58 PM EST) or SPC MLS (last updated Tue 10/06/2026 11:20:21 PM EST) or Martin MLS (last updated Tue 10/06/2026 11:38:13 PM EST) or Indian River MLS (last updated Tue 10/06/2026 11:30:07 PM EST) or Northeast Florida MLS (last updated Tue 10/06/2026 11:58:48 PM EST) or Beaches MLS (last updated Tue 10/06/2026 11:57:56 PM EST) or Naples MLS (last updated Tue 10/06/2026 11:40:17 PM EST) or PBI MLS (last updated Tue 10/06/2026 11:21:24 PM EST) or Florida Keys MLS (last updated Tue 10/06/2026 8:31:34 PM EST). Real estate listings held by brokerage firms other than Illustrated Properties may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
Privacy Policy / DMCA Notice / ADA Accessibility
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All Property Features
- Property Type: Residential - Single Family
- Appliances: Other Equipment/Appliances
- Community Features: Other Subdivision - See Remarks
- Cooling: Central Air
- Crops Included Y/N: No
- Days on Site: 50
- Door Features: High Impact Doors
- Exterior: Concrete Block Construction
- Flooring: Tile
- Garage: 2
- Heating: Central
- Home Style: Attached, One Story
- Home Warranty Y/N: No
- Interior Features: First Floor Entry, Split Bedroom, Family Room
- Lease Considered Y/N: No
- Listing Terms: All Cash, Conventional
- Lot Description: 1/2 To Less Than 3/4 Acre Lot
- Lot Size: 0.51 Acres
- Parcel#: 24-52-05-009-0170
- Parking: Driveway
- Parking Notes: Driveway
- Pool: In Ground
- Property Attached Y/N: No
- Property Sub-Type: Single Family Residence
- Roof Type: Barrel Roof, Curved/S-Tile Roof
- Sewer: Public Sewer
- Special View Info: Bay, Direct Ocean
- Taxes: $201,741
- Water: Municipal Water
- Water Features: Ocean Access, Seawall
- Year Built: 1961