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500 S Mashta Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 500 S Mashta Dr, Key Biscayne, FL 33149

Property Summary

Property TypeSingle Family Home
Details6 bd · 6 ba · 10,820 sqft · built 2014
Lot Size0.547 acres (23,814 sqft)
Owner2 Trust Names on File
Last Sale$17,400,000 (May 2021)
Tax Bill$252,261 (2025)
Deeds & MortgagesMay 2021 Sale
Flood ZoneZone AE (high risk)
APN24-5205-009-0200

Property Details

APN / Parcel Number

Primary APN24-5205-009-0200

Interior

Bedrooms6 Beds
Full Baths6 Baths
Half Baths2 Half Baths
Stories3 Stories
Building Area10,820 sqft Living Area
Gross Area14,969 sqft
ElevatorElevator

Exterior

Year BuiltBuilt 2014
Effective Year BuiltEffective 2014
Exterior MaterialConcrete Block/Stucco
Roof TypeRigid Frame Bar Joist
Roof MaterialOther
Lot Area23,814 sqft (0.547 acres)
Lot Dimensions189 ft deep x 126 ft wide
Pool TypePool with Hot Tub/Spa
Pool Area56 sqft
Patio Area1,140 sqft

Location & Zoning

Street Address500 S MASHTA DR
CityKEY BISCAYNE
StateFL
Zip33149-1733
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning Code2001
Legal Description5-6 55 42 PB 65-65 MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 19BLK 3 LOT SIZE126.000 X 189 COC 23768-4016 09 2005 1
Legal Range42E
Legal Township55S
Legal Section05
Legal SubdivisionMASHTA ISLAND
Legal TractA
Legal Block3
Legal Lot Number19
JurisdictionDADE FL
Township / Civil DivisionKEY BISCAYNE
Census Block Group1
Census Block1004
Census Tract4602

Owner

500 S Mashta Dr is owner-occupied and held in a trust since May 2021.

Source: Miami-Dade County records, as of October 21, 2026

Owner of Record2 Trust Names on File
Mailing Address500 S MASHTA DR, KEY BISCAYNE, FL 33149-1733
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMay 3, 2021 · Amount on File
Deed SaleMay 3, 2021 · Amount on File
Prior SaleJul 1, 2013
Deed Document Number2021307248
Deed Book / Page32483 / 3327
Prior Transfer DateAug 20, 1993
Prior Transfer Doc1602002335
Record UpdatedOct 29, 2026

May 2021: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionDADE FL
Recording DateMay 3, 2021
Property Address500 S MASHTA DR, KEY BISCAYNE, FL 33149-1733
Document Number0000307248
Book / Page32483 / 3327
Map ReferenceMB 65 PG 65
Instrument DateApr 26, 2021
Instrument2021R0307248
Transaction TypeTransfer
Record UpdatedApr 2, 2024
Title CompanyATTORNEY ONLY, ATTORNEY

Transaction

AmountAmount on Record
Tax$0.00
Amount AccuracyLimited Transfer Tax Data
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name
Address791 CRANDON BLVD APT 405, 405, KEY BISCAYNE, FL 33149-2200

Transferred To (Grantee/Buyer)

NameVerified Name
Address500 S MASHTA DR, KEY BISCAYNE, FL 33149-1733

Tax Assessment & Valuation

The 2025 property tax bill for 500 S Mashta Dr was $252,261 with a homeowner's exemption.

Source: Miami-Dade County assessment roll, as of October 21, 2026

Property Jurisdictions

TypeName
StateFlorida
CountyMiami-Dade County
MunicipalityKey Biscayne Village
Unified School DistrictDade County School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$252,261.00 Homeowner's exemption$16,143,736$18,279,591 Land $14,764,680 Building $3,514,911
2023$243,490.00 (+3.38%) Homeowner's exemption$15,231,808 (+3%)$15,774,796 (+6.67%) Land $12,335,652 Building $3,439,144
2022$235,521.00 Homeowner's exemption$14,788,164 Land $11,311,650 Building $3,476,514$14,788,164 Land $11,311,650 Building $3,476,514

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 500 S Mashta Dr in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.

Source: FEMA National Flood Hazard Layer, effective January 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone AE
high risk
100-Year FloodplainYes
1% annual chance
FloodwayNo
Base Flood Elevation10.0 ft
Flood Insurance RequirementRequired
federally backed loans
Flood Insurance CostPremium on File
median of 201 policies
Community Rating SystemClass 8 (10% premium discount)
Nearby Flood Policies201 in force
Nearby Flood Claims312 (1979–2024)
Claims Outside the SFHA1 of 312
Most Recent ClaimJun 2024 · rainfall accumulation
Claims by Event
  • Hurricane Irma, Sep 2017 · 38 claims
  • Hurricane Wilma, Oct 2005 · 26 claims
  • Hurricane Andrew, Aug 1992 · 195 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

The area around 500 S Mashta Dr has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskNot rated
no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemMDWASA - MAIN SYSTEM
serves 2,377,460 people · EPA ID FL4130871
Water SourceGroundwater
Last State InspectionDec 2023
Lead3 ppb (2023)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting6
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 247 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless · DSL		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Verizon
Fixed Wireless		300 / 20
T-Mobile
Fixed Wireless		100 / 20

Cell Coverage

5G (outdoors only) and 4G LTE

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