635 William St, Key West, FL 33040 Property Records

Monroe County property record for 635 William St, Key West, FL 33040

Property Summary

Property TypeSingle Family Home
Details3 bd · 4 ba · 1,588 sqft · built 1928
Lot Size0.126 acres (5,498 sqft)
OwnerOwner Name on Record
Last Sale$1,605,000 (Oct 2014)
Tax Bill$18,345 (2024)
Flood ZoneZone AE (high risk)
APN00018500-000000

Property Details

APN / Parcel Number

Primary APN00018500-000000
Alternative APNs
  • 01010100018500000000
  • 1019054

Interior

Bedrooms3 Beds
Full Baths4 Baths
Half Baths1 Half Bath
Stories1 Story
Building Area1,588 sqft Living Area
1st Floor Area1,588 sqft
FlooringWood
Interior WallsWood

Exterior

Year BuiltBuilt 1928
Effective Year BuiltEffective 2010
Exterior MaterialWood
Roof TypeCathedral/Clerestory
Roof MaterialMetal
Lot Area5,498 sqft (0.126 acres)
Lot Dimensions110 ft deep x 50 ft wide

Exterior Amenities

Pool Area152 sqft
PorchOpen Porch
Porch Area108 sqft
Patio Area1,264 sqft
FenceFence
Water FeatureWater Feature

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemForced Air

Location & Zoning

Account Number1019054
Old Parcel Number01010100018500000000
Street Address635 WILLIAM ST
CityKEY WEST
StateFL
Zip33040-6849
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionKW PT OF TR 5 OR334-593/94 OR369-642/43 OR1087-955/6 OR1206-1210 OR1575-1464/71 OR1575-1472/74 OR2280-1502/03 OR2707-2276/79
Legal Range25E
Legal Township68S
Legal Section06
Legal SubdivisionKEY WEST SQUARE 01 TR 05
Legal Tract5
JurisdictionMONROE FL
Township / Civil DivisionKEY WEST
Census Block Group3
Census Block3011
Census Tract972400

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 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.

Owner

Source: Monroe County records, as of December 5, 2025

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

Owner of RecordOwner Name on Record
Mailing Address1132 SE 2ND AVE, FORT LAUDERDALE, FL 33316-1008

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleOct 17, 2014 · Amount on Record
Deed SaleOct 17, 2014 · Amount on Record
Prior SaleMar 20, 2007 · Amount on Record
Deed Document Number2001741
Deed Book / Page2707 / 2280
Record UpdatedJun 8, 2026

Tax Assessment & Valuation

Source: Monroe County assessment roll, as of July 1, 2025

Property Jurisdictions

TypeName
StateFlorida
CountyMonroe County
MunicipalityKey West City
Unified School DistrictMonroe County School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$2,593,612 (+5.18%) Land $1,524,600 Building $1,069,012$2,593,612 (+5.18%) Land $1,524,600 Building $1,069,012
2024$18,345.00 (+5.77%)
2023$17,345.00 (+18.29%)$2,465,948 (+29.33%) Land $1,443,750 Building $1,022,198$2,465,948 (+29.33%) Land $1,443,750 Building $1,022,198
2022$14,663.00$1,906,757 Land $924,000 Building $982,757$1,906,757 Land $924,000 Building $982,757

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

Flood

Source: FEMA National Flood Hazard Layer, effective September 24, 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 Elevation6.0 ft
Flood Insurance RequirementRequired
federally backed loans
Flood Insurance CostPremium on Record
median of 285 individual policies
Community Rating SystemClass 5 (25% premium discount)
Nearby Flood Policies328 units insured
incl. 43 condo units
Nearby Flood Claims89 (1980–2025)
Claims Outside the SFHA43 of 89
Most Recent ClaimOct 2025 · rainfall accumulation
Claims by Event
  • Hurricane Irma, Sep 2017 · 23 claims
  • Hurricane Wilma, Oct 2005 · 8 claims
  • Hurricane Georges, Sep 1998 · 25 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

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 922 locations within half a mile, as of December 31, 2025

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

May also be available: Hotwire Communications.

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