520 S Mashta Dr
Key Biscayne, FL 33149
- 5 beds
- 4 baths
- 3,085 sqft
- ~1/2 acre lot
- $6,126 per sqft
- 1961 build
- – on site
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 views—an 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. Don’t miss this once-in-a-lifetime opportunity to establish a legacy in one of South Florida's most prestigious enclaves.
Last checked:
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Checking…
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Last updated Mar 3, 2025
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MLS# A11684094 —
The Building
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Year Built:1961
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Year Built Details:Resale
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Construction Materials:Block
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Architectural Style:OneStory
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Stories:1
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Roof:Barrel, SpanishTile
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Exterior Features:SecurityHighImpactDoors
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Direction Faces:East
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Building Area Total:4177.0
Interior
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Interior Features:BedroomOnMainLevel, FirstFloorEntry, SplitBedrooms
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Flooring:Tile
Room Dimensions
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Living Area:3085.0
Financial & Terms
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Lease Considered:false
The Property
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View:true
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View:Bay, Ocean
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Parcel Number:24 52 05 009 0170
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Property Type:Residential
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Property Subtype:SingleFamilyResidence
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Property Subtype Additional:SingleFamilyResidence
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Zoning Description:2001
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Lot Size Area:22140.0
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Lot Size SqFt:22,140 Sqft
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Lot Size Units:SquareFeet
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Frontage Length:138
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Waterfront:true
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Waterfront Features:Bayfront, Seawall
Listing Agent
- Contact info:
- Agent phone:
- (786) 390-3716
- Office phone:
- (305) 695-6300
Taxes
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Tax Year:2023
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Tax Annual Amount:$179,582
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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
Beds
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Bedrooms Total:5
Baths
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Total Baths:4
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Full Baths:4
The Listing
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Virtual Tour Unbranded:
Heating & Cooling
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Heating:Central
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Heating:true
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Cooling:CentralAir
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Cooling:true
Utilities
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Sewer:PublicSewer
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Water Source:Public
Appliances
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Appliances:Other
The Community
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Subdivision Name:Mashta Island A Replat Of
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Senior Community:false
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Community Features:Other, SeeRemarks
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Pool Features:InGround, Pool
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Pets Allowed:NoPetRestrictions,Yes
Parking
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Parking Features:Driveway
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Garage:true
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Garage Spaces:2.0
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Covered Spaces:2.0
Monthly cost estimate
Asking price
$18,900,000
| Expense | Monthly cost |
|---|---|
|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$101,203
|
| Taxes | $14,965 |
| Insurance | $5,197 |
| Utilities | $223 See report |
| Total | $121,588/mo.* |
| *This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
| Date | Event | Source | Price | % Change |
|---|---|---|---|---|
|
1/6/25
Jan 6, 2025
|
Price Changed | MLSM | $18,900,000 | -5.5% |
|
10/29/24
Oct 29, 2024
|
Listed / Active | MLSM | $20,000,000 | 21.2% |
|
2/26/24
Feb 26, 2024
|
MLSM | $16,500,000 | -4.1% |
