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Duplex (2 Units, Any Combination)Residential
Last sold for $100 on Dec 13, 2018

637 UNITED ST

KEY WEST, FL 33040
2
Beds
2
Baths
1,504 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1909
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$100 · Dec 13, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,721 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,040,359 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$819,007
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$221,352
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,064,197
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,040,359

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.61%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyMONROE
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2005
Lot (acres)The size of the land the home sits on, from county records.0.21
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Block (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 633 ft²Porch · 114 ft²

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Horace O'Bryant SchoolD
Elementary · Grades PK–8 · 0.7 mi
H
Key West High SchoolC
High · Grades 9–12 · 1.2 mi

District: Monroe County School District

Neighborhood · ZIP 33040These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.1

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.82%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.31,854
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.222 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,370
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$116,488
Average tempThe average temperature here across a full year.78°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.76%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

637 United St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Has a bigger lot than 77% of homes in Key West 33040
  • Among the oldest homes in Monroe County

How it measures up in Key West 33040

The dot is this home. The mark in the middle is the typical home in Key West 33040.

Living area1,504 ft²
SmallerTypical 1,288 ft²Bigger

Bigger than 64% of homes nearby

Lot size0.21 ac
SmallerTypical 0.12 acBigger

Bigger than 77% of homes nearby

Year built1909
OlderTypical 1973Newer

Older than almost all homes nearby

How 637 United St ranks against every home in each area.
MeasureThis homeKey West 33040Monroe County
Living areabigger than1,504 ft²64% of homes59% of homes
Lot sizebigger than0.21 ac77% of homes63% of homes
Year builtnewer than1909almost no homesalmost no homes

About 637 United St

When did 637 United St, Key West, FL last sell?

637 United St, Key West, FL last sold on Dec 13, 2018 for $100, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 637 United St, Key West, FL?

637 United St, Key West, FL has 2 bedrooms, 2 bathrooms, 1,504 square feet of living space and a 0.21-acre lot.

When was 637 United St, Key West, FL built?

637 United St, Key West, FL was built in 1909, making it 117 years old. It is a duplex single home. The building has 1 story.

What schools serve 637 United St, Key West, FL?

637 United St, Key West, FL is assigned to Horace O'Bryant School (elementary), rated D; Key West High School (high), rated C. All sit in Monroe County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 637 United St, Key West, FL compare to other homes in Key West 33040?

Among the 11,988 homes in Key West 33040, it is bigger than 64% of them (1,504 ft² against a typical 1,288 ft²), its lot is bigger than 77% of them (0.21 ac against a typical 0.12 ac) and it is newer than almost none of them (1909 against a typical 1973). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 637 United St, Key West, FL?

The 2024 property tax bill for 637 United St, Key West, FL was $9,721. The county assessed it at $1,040,359.

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