Home in 520 S Mashta Drive, Key Biscayne, FL 33149 for sale with MLS# A12071221
Seize a rare opportunity to create a landmark waterfront estate on one of the largest residential lots in Key Biscayne's 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 property's remarkable scale, premier waterfront setting, and spectacular sunsets. The proposed design creates an extraordinary canvas for sophisticated indoor-outdoor living and entertaining, should the buyer choose to pursue the concept.With its exceptional lot size, expansive water frontage, and coveted Mashta Island address, this is a truly irreplaceable opportunity to create a legacy estate in one of South Florida's most prestigious waterfront communities.
520 S Mashta Drive, Key Biscayne, FL 33149
- Price:
- $19,900,000.00
- Original List Price:
- $19,900,000.00
- List Price per Sq Ft (Calculated, Approx.):
- $6,450.56
- Listing Type:
- For Sale
- Status:
- Active
- Listing Category:
- Residential
- Property Type:
- Single Family House
- Description of Last Important Update:
- New Listing
- Last Major Update on:
- August 12, 2026 4:00 am
- Other Special Conditions:
- Sold As-is
- Bedrooms:
- 5
- Bathrooms Total:
- 4
- Full Bath:
- 4
- Room Type:
- Family Room
- Master Bedroom Bath:
- Master Bdrm - Ground
- Living Area:
- 3,085 Sqft
- Built-Up Area:
- 4,177 Sqft
- Lot Size Acres:
- 0.51
- View from the Property:
- Bay, Direct Ocean
- Waterfront:
- Yes
- Waterfront Features:
- Ocean Access, Seawall, Bayfront
- Frontage Length:
- 138
- Private Pool
- Swimming Pool Features:
- In Ground
- Appliances:
- Other
- Interior:
- Bedroom Layout - Split
- Air Conditioning
- Air Conditioning System:
- Central Air
- Heating
- Heating System:
- Central
- Boat and Dock Features:
- Private Dock
- Property Entrance Faces:
- East
- Other Equipment:
- Other
- Storm Protection Impact Glass:
- Partial
- Year Built:
- 1961
- Roof:
- Barrel, Spanish Tile
- Levels:
- One
- Entry Level (floor):
- 1
- Construction Materials:
- Block
- Flooring:
- Tile
- Number of stories:
- 1
- Flood Zone Code:
- AE
- Property Condition:
- Resale
- Tax Annual Amount:
- $201,741.00
- Tax Year:
- 2026
- Garage
- Garage Spaces:
- 2
- Covered Spaces:
- 2
- Parking Features:
- Driveway
- Sewer:
- Public Sewer
- Water Source:
- Public
- Amenities Provided by the Homeowner's Association (HOA):
- Other
- Subdivision Name:
- MASHTA ISLAND A REPLAT OF
- Senior Community:
- No
- Community Dock
- Leasing Permitted
- Leasing Permitted Details:
- Okay To Lease
- Listing Terms Considered by Seller:
- Cash, Conventional
- Buyer Possession:
- Negotiable
- Tax Legal Description:
- 5-6 55 42 MASHTA ISLAND A REPLAT OF TRS A & C SELY35FT LOT 16 & ALL LT 17 BLK BLK 3 LOT SIZE 135.000 X 164 OR 15816-1278 1292 1
- Real Estate Folio Number (Parcel Number):
- 2452050090170
- Zoning:
- 2001
- Elementary School:
- Palm Springs (miami-dade)
- High School:
- Coral Gables
- Middle Or Junior School:
- Ponce De Leon
- Active on the market since:
- August 12, 2026
- Listing Agreement executed on:
- August 12, 2026
- Listing Status Last Changed On:
- August 12, 2026 4:00 am
- Photos updated on:
- August 19, 2026 3:44 pm
- Last Modified:
- August 19, 2026 3:49 pm
- Courtesy of:
- Coldwell Banker Realty
- Attribution:
- Not provided
- Street Name:
- Mashta
- Street Number:
- 520
- City:
- Key Biscayne
- State:
- Florida
- Zip Code:
- 33149
- County:
- Miami-Dade
- Latitude:
- N25° 40' 59.8''
- Longitude:
- W81° 49' 38.2''
- Street Suffix:
- Drive
- Street Direction Prefix:
- S
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Neighborhood Stats
Source: U.S. Census Bureau, ACS 5-Year Estimates
Air Quality
Source: AirNow.gov · Miami
Ver la propiedad 520 S Mashta Drive, Key Biscayne, FL 33149
