Waterfront. Located on Mashta Island and island within an island in Key Biscayne. The minute you walk into the house the most breathtaking Biscayne Bay views welcomes you. Breathtaking sunsets.Oversized Lot:18,300-sq.ft. 2 story home with excellent floor plan,Large living room area w/double height ceilings, family room adjacent to Kitchen area. Large dining area w/direct water views & access to pool area. 2nd floor: Master suite & 3 additional bedrooms en suite Master suite w/balcony & large walk in closet .1st floor Guest suite.Water views from every room, dining & reception area.Gazebo by the water.Open kitchen. staff area.powder room.oversized pool w/Cabana room &cabana bath.Double access ( service access &main access) Lush garden offers total privacy . Enclosed two car garage.
Sold for $18,921,250
$18,921,250
510 S Mashta Dr, Key Biscayne, FL 33149
5beds
5,226sqft
Single Family Residence
Built in 1981
0.42 Acres Lot
$18,691,900 Zestimate®
$3,621/sqft
$72,480 Estimated rent
Home value
$18,691,900
$16.26M - $21.50M
$72,480/mo
Zestimate® history
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List your homeWhat's special
Breathtaking biscayne bay viewsDouble height ceilingsOversized lotOversized poolOpen kitchen
Zillow last checked:
Listing updated:
Listed by:
Brigitte De Langeron 305-244-7493,
DLS International Realty
Bought with:
Dolores Urdapilleta, 3245467
Urdapilleta Real Estate, LLC
Source: MIAMI,MLS#: A11782312
Originating MLS: A-Miami Association of REALTORS
Originating MLS: A-Miami Association of REALTORSFacts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 7
- Full bathrooms: 6
- 1/2 bathrooms: 1
Rooms
- Room types: Den/Library/Office, Family Room, Media Room
Heating
- Central, Electric
Cooling
- Central Air, Electric
Appliances
- Included: Dishwasher, Refrigerator
Features
- Built-in Features, Closet Cabinetry, Split Bedroom, Volume Ceilings, Separate Guest/In-Law Quarters, Storage
- Flooring: Marble, Wood
Interior area
- Total structure area: 5,992
- Total interior livable area: 5,226 sqft
Property
Parking
- Total spaces: 2
- Parking features: Additional Spaces Available, Circular Driveway, Driveway, Garage Door Opener
- Attached garage spaces: 2
- Has uncovered spaces: Yes
Features
- Stories: 2
- Entry location: First Floor Entry
- Patio & porch: Deck
- Has private pool: Yes
- Pool features: In Ground
- Has view: Yes
- View description: Bay, Garden
- Has water view: Yes
- Water view: Bay
- Waterfront features: Ocean Access, Ocean Front, WF/Pool/Ocean Access
- Frontage length: 0
Lot
- Size: 0.42 Acres
- Features: 1/4 To Less Than 1/2 Acre Lot
Details
- Parcel number: 2452050090190
- Zoning: 2001
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS Construction
- Roof: Barrel Roof
Condition
- Year built: 1981
Utilities & green energy
- Sewer: Public Sewer
- Water: Municipal Water
Community & HOA
Community
- Features: Other, Other Subdiv/Park Info
- Security: Smoke Detector
- Subdivision: Mashta Island A Replat Of
HOA
- Has HOA: No
Location
- Region: Key Biscayne
Financial & listing details
- Price per square foot: $3,621/sqft
- Tax assessed value: $12,476,235
- Annual tax amount: $172,413
- Date on market: 4/11/2025
- Listing terms: All Cash,Conventional
Price history
| Date | Event | Price |
|---|---|---|
| 7/8/2025 | Sold | $18,921,250-0.4%$3,621/sqft |
Source:  MIAMI #A11782312 Report a problem | ||
| 5/13/2025 | Pending sale | $19,000,000$3,636/sqft |
Source: MIAMI #A11782312 Report a problem | ||
| 4/11/2025 | Listed for sale | $19,000,000+75.9%$3,636/sqft |
Source: MIAMI #A11782312 Report a problem | ||
| 9/14/2019 | Listing removed | $10,800,000$2,067/sqft |
Source: Fortune International Realty #A10503575 Report a problem | ||
| 7/13/2018 | Listed for sale | $10,800,000+3542.5%$2,067/sqft |
Source: Fortune International Realty #A10503575 Report a problem | ||
| 8/1/2017 | Sold | $296,500-97.3%$57/sqft |
Source: Agent Provided Report a problem | ||
| 2/21/2017 | Listed for sale | $10,800,000+3.7%$2,067/sqft |
Source: Fortune International Realty #A10225672 Report a problem | ||
| 4/10/2010 | Sold | $10,413,000-19.3%$1,993/sqft |
Source: Public Record Report a problem | ||
| 12/21/2008 | Listed for sale | $12,900,000+8.4%$2,468/sqft |
Source: ONE Sotheby's International Realty #D1118491 Report a problem | ||
| 11/22/2007 | Listing removed | $11,900,000$2,277/sqft |
Source: Number1Expert #D1118491 Report a problem | ||
| 11/14/2007 | Listed for sale | $11,900,000+42.5%$2,277/sqft |
Source: Number1Expert #D1118491 Report a problem | ||
| 5/9/2006 | Sold | $8,350,000+53.2%$1,598/sqft |
Source: Agent Provided Report a problem | ||
| 1/19/2004 | Sold | $5,450,000$1,043/sqft |
Source: Agent Provided Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $176,215 +2.2% | $11,275,726 +2.9% |
| 2024 | $172,413 +1.4% | $10,957,946 +3% |
| 2023 | $170,095 +11.1% | $10,638,783 +13.9% |
| 2022 | $153,060 +8.7% | $9,341,791 +10% |
| 2021 | $140,851 +3.6% | $8,492,538 +3.2% |
| 2020 | $135,907 -0.4% | $8,229,104 -0.1% |
| 2019 | $136,428 +3.2% | $8,240,171 -0.1% |
| 2018 | $132,156 | $8,251,237 +25% |
| 2017 | $132,156 +24.6% | $6,603,285 +2.1% |
| 2016 | $106,049 -1.7% | $6,467,469 +0.7% |
| 2015 | $107,916 -1.5% | $6,422,512 +0.8% |
| 2014 | $109,558 +3.2% | $6,371,540 +1.5% |
| 2013 | $106,156 +0% | $6,277,380 +1.8% |
| 2012 | $106,156 +6.5% | $6,164,808 +7.9% |
| 2011 | $99,723 +0.9% | $5,713,844 +8.6% |
| 2010 | $98,786 -17.5% | $5,262,879 -21.5% |
| 2009 | $119,702 -4.5% | $6,700,975 -6.6% |
| 2007 | $125,383 +51.1% | $7,171,919 |
| 2006 | $82,967 | -- |
| 2005 | $82,967 +35.6% | -- |
| 2004 | $61,185 +20.4% | -- |
| 2003 | $50,802 +32.2% | -- |
| 2002 | $38,427 | -- |
| 2001 | $38,427 | -- |
Find assessor info on the county website
Neighborhood: 33149
Nearby homes
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Nearby schools
GreatSchools rating
- 8/10Key Biscayne K-8 CenterGrades: PK-8Distance: 0.6 mi
- 5/10Coral Gables Senior High SchoolGrades: PK,9-12Distance: 6.6 mi
- 6/10Ponce De Leon Middle SchoolGrades: 6-8Distance: 6.6 mi
Schools provided by the listing agent
- Elementary: Keybiscayne
- Middle: Coral Gables Prep Academy
- High: Mast Academy
Source: MIAMI. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Estimated market value
$18,691,900
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Estimated market value
$18,691,900
- Florida
- Miami-Dade County
- Key Biscayne
- 33149
- 510 S Mashta Dr
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