$18,921,250
SOLD JUL 8, 2025

510 S Mashta Dr Key Biscayne, FL 33149

Village of Key Biscayne Neighborhood
5 Beds
6.5 Baths
5,226 Sq Ft
0.42 Acres

Recently Sold

$3,621 Per Sq Ft

32 Days on Market

Highlights

  • Ocean Front
  • Private Dock
  • In Ground Pool
  • Key Biscayne K-8 Center Rated A-
  • Home Theater
  • Bay View

About This Home

As of July 2025

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.

Last Agent to Sell the Property

Brigitte De Langeron

DLS International Realty License #0545936 Listed on: 04/11/2025

Last Buyer's Agent

Dolores Urdapilleta

Urdapilleta Real Estate, LLC License #3245467

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $172,413

Year Built

  • Built in 1981

Lot Details

  • 0.42 Acre Lot
  • Ocean Front
  • East Facing Home
  • Property is zoned 2001

Parking

  • 2 Car Attached Garage
  • Automatic Garage Door Opener
  • Circular Driveway
  • Open Parking

Property Views

  • Bay
  • Garden

Home Design

  • Barrel Roof Shape
  • Concrete Block And Stucco Construction

Interior Spaces

  • 5,226 Sq Ft Home
  • 2-Story Property
  • Built-In Features
  • Vaulted Ceiling
  • Family Room
  • Combination Dining and Living Room
  • Home Theater
  • Den
  • Storage Room
  • Fire and Smoke Detector

Kitchen

  • Breakfast Area or Nook
  • Eat-In Kitchen
  • Dishwasher

Flooring

  • Wood
  • Marble

Bedrooms and Bathrooms

  • 5 Bedrooms
  • Main Floor Bedroom
  • Split Bedroom Floorplan
  • Closet Cabinetry
  • In-Law or Guest Suite
  • Dual Sinks
  • Bathtub
  • Shower Only in Primary Bathroom

Outdoor Features

  • In Ground Pool
  • Property has ocean access
  • Private Dock
  • Deck

Schools

  • Keybiscayne Elementary School
  • Coral Gables Prep Academy Middle School
  • Mast Academy High School

Utilities

  • Central Heating and Cooling System

Community Details

  • No Home Owners Association
  • Mashta Island A Replat Of Subdivision

Listing and Financial Details

  • Assessor Parcel Number 24-52-05-009-0190

Home Details

Home Type

Single Family

Est. Annual Taxes

$172,413

Year Built

Built in 1981

Lot Details

0

Parking

2

Listing Details

  • Property Type: Residential
  • Year Built: 1981
  • Property Sub Type: Single Family Residence
  • Architectural Style: Attached, Two Story
  • Garage Yn: Yes
  • Horses: No
  • Inclusions: Dock Available,Private Dock
  • New Construction: No
  • Structure Type: House
  • Subdivision Name: MASHTA ISLAND A REPLAT OF
  • Year Built Details: Resale
  • MIAMIRE_PoolYN: Yes
  • MIAMIRE_PetsAllowedYN: Yes
  • MIAMIRE_MembershipPurchRqdYN: No
  • Special Features: VirtualTour

Interior Features

  • Appliances: Dishwasher, Refrigerator
  • Interior Amenities: First Floor Entry, Built-in Features, Closet Cabinetry, Split Bedroom, Volume Ceilings, Den/Library/Office, Family Room, Separate Guest/In-Law Quarters, Media Room, Storage
  • Spa Yn: No
  • Full Bathrooms: 6
  • Half Bathrooms: 1
  • Total Bedrooms: 5
  • Flooring: Marble, Wood
  • Furnished: Unfurnished
  • Living Area: 5226
  • Other Equipment: Automatic Garage Door Opener
  • Possible Use: Unknown/Withheld
  • Bedroom Features: At Least 1 Bedroom Ground Level, Entry Level, Primary Bath Shower, Primary Bath Tub
  • Dining Room Features: Breakfast Area, Dining/Living Room, Eat-In Kitchen
  • Living Room Features: Den/Library/Office, Family Room, Separate Guest/In-Law Quarters, Media Room, Storage Room
  • Master Bathroom Features: Dual Sinks, Separate Tub & Shower

Exterior Features

  • Roof: Barrel Roof
  • View: Bay, Garden
  • Construction Type: CBS Construction
  • Direction Faces: East
  • Lot Features: 1/4 To Less Than 1/2 Acre Lot
  • Patio And Porch Features: Deck
  • Pool Features: In Ground
  • Pool Private: No
  • View: Yes
  • Waterfront Features: Ocean Access, Ocean Front
  • Waterfront: Yes

Garage/Parking

  • Attached Garage: Yes
  • Park Building Name: MASHTA ISLAND A REPLAT OF
  • Covered Parking Spaces: 2
  • Garage Spaces: 2
  • Open Parking: Yes
  • Parking Features: Additional Spaces Available, Circular Driveway, Driveway

Utilities

  • Sewer: Public Sewer
  • Water Source: Municipal Water
  • Cooling: Central Air, Electric
  • Cooling Y N: Yes
  • Heating: Central, Electric
  • Heating Yn: Yes
  • Security: Smoke Detector

Condo/Co-op/Association

  • Association: No
  • Community Features: Other

Association/Amenities

  • MIAMIRE_TypeofAssociation: None

Schools

  • Elementary School: Keybiscayne
  • High School: Mast Academy
  • Middle Or Junior School: Coral Gables Prep Academy

Lot Info

  • Parcel Number: 24-52-05-009-0190
  • Lot Size Sq Ft: 18300
  • Zoning: 2001

Rental Info

  • Pets Allowed: Restrictions Or Possible Restrictions

Tax Info

  • Tax Year: 2024
  • Tax Annual Amount: 172413

Ownership History

Date Name Owned For Owner Type

Purchase Details

Listed on
Apr 11, 2025
Closed on
Jul 7, 2025
Sold by
Mueller Simon and Mueller Claire Nicola
Bought by
Navarro Ana Paula Creel
Seller's Agent
Brigitte De Langeron
DLS International Realty
Buyer's Agent
Dolores Urdapilleta
Urdapilleta Real Estate, LLC
List Price
$19,000,000
Sold Price
$18,921,250
Premium/Discount to List
-$78,750
-0.41%
Views
29

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
-99.28%
Original Mortgage
$12,044,200
Outstanding Balance
$12,044,200
Interest Rate
5.38%
Mortgage Type
New Conventional
Estimated Equity
-$4,268,700

Purchase Details

Closed on
Apr 30, 2010
Sold by
City National Bank Of Florida
Bought by
Mueller Simon and Mueller Claire Nicola
Source: Public Records

Range of Values:

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Average Value
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List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

Date Type Sale Price Title Company
Warranty Deed $18,921,300 None Listed On Document
Warranty Deed $18,921,300 None Listed On Document
Deed $10,413,000 Attorney
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Open $12,044,200 New Conventional
Closed $12,044,200 New Conventional
Previous Owner $6,160,000 Unknown
Previous Owner $1,000,000 New Conventional
Previous Owner $1,000,000 Credit Line Revolving
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
07/08/2025 07/08/25 Sold $18,921,250 -0.4% $3,621 / Sq Ft
05/13/2025 05/13/25 Pending -- -- --
04/11/2025 04/11/25 For Sale $19,000,000 0.0% $3,636 / Sq Ft
06/14/2017 06/14/17 Rented $29,650 -7.3% --
11/17/2016 11/17/16 Off Market $32,000 -- --
09/07/2016 09/07/16 For Rent $32,000 -- --
Source: MIAMI REALTORS® MLS

Tax History Compared to Growth

Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $172,413 $11,275,726 -- --
2024 $170,095 $10,957,946 -- --
2023 $170,095 $10,638,783 $9,479,400 $1,159,383
2022 $153,060 $9,341,791 $0 $0
2021 $140,851 $8,492,538 $7,594,500 $898,038
2020 $135,907 $8,229,104 $7,320,000 $909,104
2019 $136,428 $8,240,171 $7,320,000 $920,171
2018 $132,156 $8,251,237 $7,320,000 $931,237
2017 $106,049 $6,603,285 $0 $0
2016 $106,339 $6,467,469 $0 $0
2015 $107,916 $6,422,512 $0 $0
2014 $109,558 $6,371,540 $0 $0
Source: Public Records

Agents Affiliated with this Home

  • Brigitte De Langeron

    Seller's Agent in 2025

    Brigitte De Langeron

    DLS International Realty

    (305) 459-3875

    33 in this area

    40 Total Sales

    Brigitte De Langeron
    Section Image
  • Dolores Urdapilleta

    Buyer's Agent in 2025

    Dolores Urdapilleta

    Urdapilleta Real Estate, LLC

    (305) 790-9946

    62 in this area

    108 Total Sales

    Dolores Urdapilleta
    Section Image
  • Malgorzata Sadowska

    Buyer's Agent in 2017

    Malgorzata Sadowska

    Keller Williams Capital Realty

    (202) 236-7040

    77 Total Sales

    Malgorzata Sadowska
    Section Image
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Map

Source: MIAMI REALTORS® MLS

MLS Number: A11782312

MIAMI REALTORS® MLS

APN: 24-5205-009-0190

Florida Miami/Dade County Key Biscayne 33149 Village of Key Biscayne

510 S Mashta Dr, Key Biscayne, FL

This home is located at 510 S Mashta Dr, Key Biscayne, FL 33149 and is currently priced at $18,921,250, approximately $3,620 per square foot. This property was built in 1981. 510 S Mashta Dr is a home located in Miami-Dade County with nearby schools including Key Biscayne K-8 Center, Ponce de Leon Middle School, and Coral Gables Senior High School.

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

MIAMI REALTORS® MLS IDX information is provided exclusively for 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 is deemed reliable but not guaranteed.

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