618 William St, Key West, FL 33040 Property Records

Monroe County property record for 618 William St, Key West, FL 33040 · Last verified April 2026

Property Summary

Property TypeSingle Family Home
Details3 bd · 3 ba · 1,794 sqft · built 2019
Lot Size0.115 acres (5,025 sqft)
OwnerCompany Name on File
Last Sale$43,000 (Aug 1977)
Tax Bill$15,269 (2024)
Flood ZoneZone X (moderate risk)
APN00011630-000000

Property Details

APN / Parcel Number

Primary APN00011630-000000
Alternative APNs
  • 01010100011630000000
  • 1011941

Interior

Bedrooms3 Beds
Full Baths3 Baths
Stories2 Stories
Building Area1,794 sqft Living Area
1st Floor Area1,268 sqft
AtticAttic
Attic Area572 sqft
FlooringWood
Interior WallsWallboard/Drywall

Exterior

Year BuiltBuilt 2019
Effective Year BuiltEffective 2019
Exterior MaterialOther
Roof TypeGable/Hip
Roof MaterialMetal
Lot Area5,025 sqft (0.115 acres)

Exterior Amenities

Pool Area450 sqft
PorchOpen Porch
Porch Area566 sqft
Patio Area348 sqft

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemForced Air with A/C
Heating FuelElectric

Location & Zoning

Account Number1011941
Street Address618 WILLIAM ST
CityKEY WEST
StateFL
Zip33040-6842
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionKW PT LOT 1 SQR 59 A1-343 CO JUDGE DOCKET 9-125 A-1 OR349-290/97 OR717-350 OR719-251/53 OR725-626 OR779-1028 OR783-57/58 OR785-87/88 OR2038-629/30 OR2038-631/32
Legal Range25E
Legal Township68S
Legal Section06
Legal SubdivisionKEY WEST SQUARE 59
Legal Lot Number1
JurisdictionMONROE FL
Township / Civil DivisionKEY WEST
Census Block Group3
Census Block3008
Census Tract972400

Owner

Source: Monroe County records · APN 00011630-000000

Assessment roll updated December 8, 2025 · Last verified April 2026

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

Owner of RecordCompany Name on File
Mailing AddressPO BOX 5324, MADISON, WI 53705-0324
Owner TypeCompany
VestingLimited Liability Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleAug 01, 1977 · Amount on Record
Deed SaleAug 01, 1977 · Amount on Record
Deed Book / Page785 / 87
Record UpdatedJun 08, 2026

Tax Assessment & Valuation

Source: Monroe County records · Assessment roll updated December 8, 2025 · Last verified April 2026

Property Jurisdictions

TypeName
StateFlorida
CountyMonroe County
MunicipalityKey West City
Unified School DistrictMonroe 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$2,677,609 (+11.75%) Land $1,578,654 Building $1,098,955$2,677,609 (+11.75%) Land $1,578,654 Building $1,098,955
2024$15,269.00 (+8.89%)
2023$14,022.00 (+12.83%)$2,396,139 (+15.23%) Land $1,353,270 Building $1,042,869$2,396,139 (+15.23%) Land $1,353,270 Building $1,042,869
2022$12,428.00$2,079,395 Land $1,025,351 Building $1,054,044$2,079,395 Land $1,025,351 Building $1,054,044

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Monroe County (12087C), updated September 24, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 120879724003, 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 X
Special Flood Hazard AreaNo
Flood HazardModerate
500-Year FloodplainYes
Nearest Special Flood Hazard AreaZone AE, within 500 ft
Flood Insurance CostPremium on Record
median of 285 individual NFIP policies nearby
Community Rating SystemClass 5 (25% premium discount)
Nearby Flood Policies328 units insured
43 under condo master policies
Nearby Flood Claims89 (1980–2025)
Claims Outside the SFHA43 of 89
Most Recent ClaimOct 2025, rainfall accumulation
Claims By Storm
  • Hurricane Irma, Sep 2017 · 23 claims
  • Hurricane Wilma, Oct 2005 · 8 claims
  • Hurricane Georges, Sep 1998 · 25 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.

Historic Designation

Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified October 2026

Historic DistrictWithin the Key West Historic District (Boundary Increase)
listed 1983 · 2,494 contributing resources · NRIS 83001430

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 922 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&TDSL100 / 20

May also be available at this address: Hotwire Communications. Availability varies by address; speeds are provider-advertised maximums, not measured.

Nearby Properties on William St

Nearby Streets

Search Property Records by Address or Parcel Number