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500 S Mashta Dr

Key Biscayne, FL 33149

6 beds
8 baths
10,820 sqft
~1/2 acre lot
$1,608 per sqft
2014 build
– on site

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Enjoy ocean and sunset views from this 2014 Mashta Island estate on a 23,814 SqFt oversized lot with 138ft of water frontage. This custom-built home, inspired by Modern architect Richard Meier, features pure geometric lines and integrated open spaces with an emphasis on natural light. Unique features include a 3-story curved glass curtain wall, 14 skylights over a 27-ft high atrium, NanaWall folding glass doors, elevator, gym, dock, staff quarters, 4-car garage, generator and smart home technology.

Listing courtesy of MLSM / One Sotheby's International Realty

Last checked: Checking… • Last updated Feb 28, 2025 •

MLS# A10811961 —

The Building

Year Built:

2014
Year Built Details:

New Construction
New Construction:

true
Construction Materials:

Block
Architectural Style:

Detached
Levels:

ThreeOrMore
Roof:

Metal
Exterior Features:

Awnings, Deck, Fence, SecurityHighImpactDoors, Lighting, Patio
Window Features:

Blinds, ImpactGlass, TintedWindows, Skylights
Patio And Porch Features:

Deck, Patio
Security Features:

SecuritySystemOwned, SmokeDetectors
Direction Faces:

Southwest
Building Area Total:

14969.0

Interior

Interior Features:

BuiltinFeatures, BreakfastArea, ClosetCabinetry, DiningArea, SeparateFormalDiningRoom, EntranceFoyer, EatinKitchen, HighCeilings, SittingAreainMaster, Skylights, UpperLevelMaster, WalkInClosets, Atrium, CentralVacuum, Elevator
Furnished:

Unfurnished
Flooring:

Marble, Wood

Room Dimensions

Living Area:

10820.0

Financial & Terms

Buyer Financing:

Cash

Location

Directions:

Once you enter the village of Key Biscayne, turn right onto Harbor Drive. After 1.6 miles, turn right onto W Mashta Drive. After 0.2 miles, 500 S Mashta will be straight ahead of you.

The Property

View:

true
View:

Bay, Ocean
Parcel Number:

24 52 05 009 0200
Property Type:

Residential
Property Subtype:

SingleFamilyResidence
Property Subtype Additional:

SingleFamilyResidence
Zoning Description:

2001
Lot Features:

OversizedLot,SprinklersAutomatic
Lot Size Area:

23814.0
Lot Size SqFt:

23,814 Sqft
Lot Size Units:

SquareFeet
Frontage Length:

138
Waterfront:

true
Waterfront Features:

BayFront, OceanAccess, OceanFront, Seawall

Listing Agent

Contact info:

Taxes

Tax Year:

2015
Tax Annual Amount:

$208,849
Tax Legal Description:

5-6 55 42 PB 65-65 MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 19 BLK 3 LOT SIZE 126.000 X 189 COC 23768-4016 09 2005 1

Beds

Bedrooms Total:

6

Baths

Total Baths:

8
Full Baths:

6
Half Baths:

2

The Listing

Heating & Cooling

Heating:

Central, Electric
Heating:

true
Cooling:

CentralAir, Electric
Cooling:

true

Utilities

Utilities:

CableAvailable
Sewer:

PublicSewer
Water Source:

Public

Appliances

Appliances:

SomeGasAppliances, Dryer, Dishwasher, ElectricWaterHeater, Disposal, GasRange, Microwave, Refrigerator, Washer

Schools

Elementary School:

Keybiscayne
Middle Or Junior School:

Madison

The Community

Subdivision Name:

Mashta Island A Replat Of
Senior Community:

false
Spa:

True
Pool Features:

CleaningSystem, Heated, Pool, PoolSpaCombo
Development Status:

NewConstruction

Parking

Parking Features:

Attached, Garage, Guest, Other, GarageDoorOpener
Garage:

true
Attached Garage:

true
Garage Spaces:

4.0
Covered Spaces:

4.0

Explore the Area

My Commute

From

Soundscore™

Provided by HowLoud

Air Pollution Index

Provided by ClearlyEnergy

Max Internet Speed

XFINITY from Comcast

Provided by BroadbandNow®

View a full report

Utility Costs

$458/mo.

Estimate provided by ClearlyEnergy

View a full report

Sale history

Date	Event	Source	Price	% Change
4/13/21 Apr 13, 2021	Sold	MLSM	$17,400,000	-9.8%
3/18/21 Mar 18, 2021	Pending	MLSM	$19,300,000
2/22/21 Feb 22, 2021	Price Changed	MLSM	$19,300,000	6.0% (5.8% / YR)

House Sold on 4/13/2021

$17,400,000

Listing provided by broker:

Lucia Marin

One Sotheby's International Realty

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Listing Courtesy of: MLSM and One Sotheby's International Realty.

Based on information from the MLS MIAMI 2025. All information provided is deemed reliable but is not guaranteed and should be independently verified. MLSM, Estately and their affiliates provide the MLS and all content therein “AS IS” and without any warranty, express or implied. The information included in this listing is provided exclusively 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. The information on each listing is furnished by the owner and deemed reliable to the best of his/her knowledge, but should be verified by the purchaser. MLSM and Estately assume no responsibility for typographical errors, misprints or misinformation. This property is offered without respect to any protected classes in accordance with the law.

500 S Mashta Dr

Key Biscayne, FL 33149