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350 Island Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 350 Island Dr, Key Biscayne, FL 33149

Property Summary

Property TypeSingle Family Home
Details6 bd · 6.5 ba · 5,080 sqft · built 1983
Lot Size0.294 acres (12,800 sqft)
OwnerCompany Name on File
Last Sale$7,900,000 (Mar 2019)
Tax Bill$128,369 (2025)
Deeds & MortgagesMar 2019 Sale
Aug 2018 Mortgage
Flood ZoneZone AE (high risk)
APN24-5205-010-0630

Property Details

APN / Parcel Number

Primary APN24-5205-010-0630

Interior

Bedrooms6 Beds
Full Baths6.5 Baths
Half Baths1 Half Bath
Stories2 Stories
Building Area5,080 sqft Living Area
Gross Area6,323 sqft
1st Floor Area222 sqft
FlooringCovered

Exterior

Year BuiltBuilt 1983
Effective Year BuiltEffective 2011
Exterior MaterialConcrete Block
Construction TypeConcrete Block
Roof TypeGable/Hip
Roof MaterialTile
Lot Area12,800 sqft (0.294 acres)
Lot Dimensions160 ft deep x 80 ft wide
Garage Area322 sqft

Exterior Amenities

Pool TypePool with Hot Tub/Spa
Pool Area49 sqft
PorchPorch
Porch Area306 sqft
Patio Area2,000 sqft
Total Buildings2 Buildings

Location & Zoning

Street Address350 ISLAND DR
CityKEY BISCAYNE
StateFL
Zip33149-2414
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning Code2000
Legal Description5 55 42 CAPE FLORIDA SUB SEC 1 PB 68-81 LOT 31 & PROP INT IN & TO ADJ WATER OR WATERWAYS BLK 2 LOT SIZE 80.000 X 160 OR 19840-0028 08/2001 1 COC 26214-3394 02 2008 1
Legal Range42E
Legal Township55S
Legal Section05
Legal SubdivisionCAPE FLORIDA SUB
Legal Block1
Legal Lot Number31
JurisdictionDADE FL
Township / Civil DivisionKEY BISCAYNE
Census Block Group1
Census Block1020
Census Tract4602

Owner

350 Island Dr is owned by a company that bought it in March 2019.

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

Owner of RecordCompany Name on File
Mailing Address350 ISLAND DR, KEY BISCAYNE, FL 33149-2414
Owner TypeCompany

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

DateDocument
Mar 1, 2019Warranty Deed, Transfer
ATTORNEY ONLY
Aug 24, 2018Deed of Trust, Mortgage
MPN INC

Assessor's Deed Record

Deed NamesName on Deed
Last SaleMar 1, 2019 · Amount on File
Deed SaleMar 1, 2019 · Amount on File
Prior SaleOct 2, 2009 · Amount on File
Deed Document Number2019131774
Deed Book / Page31346 / 349
Record UpdatedOct 29, 2026

March 2019: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionDADE FL
Recording DateMar 1, 2019
Property Address350 ISLAND DR, KEY BISCAYNE, FL 33149-2414
Document Number0000131774
Book / Page031346 / 000349
Instrument DateFeb 27, 2019
Instrument131774
Transaction TypeTransfer
Record UpdatedNov 20, 2020
Title CompanyATTORNEY ONLY

Transaction

AmountAmount on Record
Tax$47,400.00
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address350 ISLAND DR KEY BISCAYNE FL 331492414, KEY BISCAYNE, FL 33149-2414

August 2018: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionDADE FL
Property Address350 ISLAND DR, KEY BISCAYNE, FL 33149-2414
Document Number0000524398
Instrument DateAug 24, 2018
Transaction TypeMortgage
Record UpdatedSep 19, 2018
Title CompanyATTORNEY ONLY

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address350 ISLAND DR KEY BISCAYNE FL 331492414, KEY BISCAYNE, FL 33149-2414

Mortgage

Document Number0000524398
DateAug 29, 2018
Book Page031118/004826
Instrument524398
Lender
NameMPN INC
Address1019 VAN BUREN ST, HOLLYWOOD, FL 33019-1638
Agreement
AmountAmount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 350 Island Dr was $128,369, up 10.7% from the year before.

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$128,369.00 (+10.67%)$8,017,198$8,322,194 Land $6,080,000 Building $2,242,194
2024$115,990.00 (+6.74%)
2023$108,668.00 (+8.79%)$6,863,246 (+5.92%) Land $4,569,600 Building $2,293,646$6,863,246 (+5.92%) Land $4,569,600 Building $2,293,646
2022$99,891.00$6,479,373 Land $4,160,000 Building $2,319,373$6,479,373 Land $4,160,000 Building $2,319,373

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

Flood

FEMA maps place 350 Island 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

Wildfire risk around 350 Island Dr is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire RiskLow
lower than 98% of the US · lower than 97.6% of Florida
Wildfire LikelihoodUnder 0.01% annual chance
ExposureNone
beyond 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

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