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850 Harbor Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 850 Harbor Dr, Key Biscayne, FL 33149 · Last verified February 2026

Property Summary

Property TypeSingle Family Home
Details7 bd · 8 ba · 6,949 sqft · built 2011
Lot Size0.408 acres (17,800 sqft)
OwnerIndividual Name on File
Last Sale$3,300,000 (Sep 2010)
Tax Bill$103,257 (2025)
Deeds & MortgagesDec 2021 Line of Credit
Jun 2021 Mortgage
Flood ZoneZone AE (high risk)
APN24-5205-010-0340

Property Details

APN / Parcel Number

Primary APN24-5205-010-0340

Interior

Bedrooms7 Beds
Full Baths8 Baths
Half Baths1 Half Bath
Stories2 Stories
Building Area6,949 sqft Living Area
Gross Area8,902 sqft
Interior WallsWallboard/Drywall

Exterior

Year BuiltBuilt 2011
Exterior MaterialStucco
Foundation TypeFooting
Roof TypeGable/Hip
Roof MaterialTile
Lot Area17,800 sqft (0.408 acres)
Garage Area491 sqft

Exterior Amenities

Pool Area36 sqft
PorchPorch
Porch Area603 sqft
Patio Area850 sqft
FenceFence

Location & Zoning

Street Address850 HARBOR DR
CityKEY BISCAYNE
StateFL
Zip33149-1745
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal Description5 55 42 PB 68-81 CAPE FLORIDA SUB SEC 1 LOT 2 & PROP INT IN & TO ADJ WATER OR WATERWAYS BLK 2 LOT SIZE 100.000 X 178 OR 20778
Legal Range42
Legal Township55
Legal Section05
Legal SubdivisionCAPE FLA SUB SEC 1
Legal Block2
Legal Lot Number2
JurisdictionDADE FL
Township / Civil DivisionKEY BISCAYNE
Census Block Group1
Census Block1020
Census Tract4602

Owner

Source: Miami-Dade County records · APN 24-5205-010-0340

Assessment roll updated July 1, 2025 · Last verified February 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordIndividual Name on File
Co-ownerVerified Secondary Owner
Mailing Address850 HARBOR DR, KEY BISCAYNE, FL 33149-1745
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

DateDocument
Dec 21, 2021Deed of Trust, Mortgage · Line of Credit
IBERIABANK
Jun 29, 2021Deed of Trust, Mortgage · Conventional Mortgage
FIRST HORIZON BANK

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleSep 07, 2010 · Amount on Record
Deed SaleSep 07, 2010 · Amount on Record
Prior SaleJun 25, 2003 · Amount on Record
Deed Document Number2010R0604143
Deed Book / Page27411 / 4138
Record UpdatedJun 08, 2026

December 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionDADE FL
Property Address850 HARBOR DR, KEY BISCAYNE, FL 33149-1745
Transaction TypeMortgage
Record UpdatedJan 26, 2022
Title CompanyADVANTAGEONE TITLE, ADVANTAGE TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address850 HARBOR DR, KEY BISCAYNE, FL 33149-1745

Mortgage

Document Number0000955625
DateDec 21, 2021
Book Page32917/1847
Instrument2021R0955625
Lender
NameIBERIABANK
TypeBank
AddressMIAMI, FL 33130
Agreement
TypeLine of Credit
AmountAmount Recorded
Term360 Months
DueDec 08, 2051
Interest
Rate TypeAdjustable Rate
Change FrequencyMonthly

June 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionDADE FL
Property Address850 HARBOR DR, KEY BISCAYNE, FL 33149-1745
Transaction TypeMortgage
Record UpdatedJul 21, 2021

Transferred To (Grantee/Buyer)

NameVerified Name
Address850 HARBOR DR, KEY BISCAYNE, FL 33149-1745

Mortgage

Document Number0000462707
DateJun 29, 2021
Book Page32589/1051
Instrument2021R0462707
Lender
NameFIRST HORIZON BANK
TypeBank
AddressMEMPHIS, TN 38103
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term181 Months
DueJul 01, 2036

Tax Assessment & Valuation

Source: Miami-Dade County records · Assessment roll updated July 1, 2025 · Last verified February 2026

Property Jurisdictions

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

Tax Bill & Assessment History

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

YearTax BillAssessed ValueAssessed Market Value
2025$103,257.00 (+3.63%) Homeowner's exemption$6,548,295 (+5.99%)$10,649,445 (+22.91%) Land $8,455,000 Building $2,194,445
2023$99,637.00 (+3.92%) Homeowner's exemption$6,178,396 (+3%)$8,664,238 (+6.69%) Land $6,354,600 Building $2,309,638
2022$95,875.00 Homeowner's exemption$5,998,443$8,120,587 Land $5,785,000 Building $2,335,587

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Miami-Dade County (12086C), updated January 25, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 120860046021, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone AE
Special Flood Hazard AreaYes
Flood HazardHigh
100-Year FloodplainYes
1% annual chance
FloodwayNo
Base Flood Elevation10.0 ft
Flood Insurance RequirementRequired (federally backed mortgages)
Flood Insurance CostPremium on Record
median of 201 individual NFIP policies nearby
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 Storm
  • Hurricane Irma, Sep 2017 · 38 claims
  • Hurricane Wilma, Oct 2005 · 26 claims
  • Hurricane Andrew, Aug 1992 · 195 claims

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 247 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
AT&TFiber5,000 / 5,000
XfinityCable2,000 / 250
VerizonFixed Wireless300 / 20
T-Mobile USAFixed Wireless100 / 20
AT&TFixed Wireless100 / 20
AT&TDSL100 / 20

Availability varies by address; speeds are provider-advertised maximums, not measured.

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