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Single Family ResidenceResidential
$205,007$198 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

18 UNION AVE

WINDHAM, CT 06280
3
Beds
1.5
Baths
1,036 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$205K
$183K low$227K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,016 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$101,040 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$30,680
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$70,360
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$101,040
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$70,728

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.52
84
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
11
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
52
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
21
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.87 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySOUTHEASTERN CONNECTICUT
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.2001
Lot (acres)The size of the land the home sits on, from county records.0.33
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Natchaug SchoolC-
Elementary · Grades KG–5 · 0.8 mi
H
Windham High SchoolD
High · Grades 9–12 · 1.2 mi
M
Windham Middle SchoolC-
Middle · Grades 6–8 · 1.9 mi

District: Windham School District

Neighborhood · ZIP 06280These 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.89
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.116
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.62

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.6.8%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.3,287
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.220 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,525
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$108,051
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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

18 Union Ave 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.

  • Among the least valuable homes in Windham 06280
  • Costs less per square foot than 88% of homes in Southeastern Connecticut County
  • Smaller than 86% of homes in Windham 06280
  • Has a smaller lot than 91% of homes in Windham 06280
  • Older than 89% of homes in Windham 06280

What homes are worth in Windham 06280

Each bar is how many homes fall in that price range. The marker is this home.

This home
$215K$617K

This home is worth less than almost all homes in Windham 06280.

How it measures up in Windham 06280

The dot is this home. The mark in the middle is the typical home in Windham 06280.

Estimated value$205,007
CheaperTypical $352,995Pricier

Cheaper than almost all homes nearby

Price per ft²$198
CheaperTypical $235Pricier

Pricier than 20% of homes nearby

Living area1,036 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 14% of homes nearby

Lot size0.33 ac
SmallerTypical 1.29 acBigger

Bigger than 9% of homes nearby

Year built1910
OlderTypical 1968Newer

Newer than 11% of homes nearby

How 18 Union Ave ranks against every home in each area.
MeasureThis homeWindham 06280Southeastern Connecticut County
Estimated valuepricier than$205,007almost no homes3% of homes
Price per ft²pricier than$19820% of homes12% of homes
Living areabigger than1,036 ft²14% of homes16% of homes
Lot sizebigger than0.33 ac9% of homes34% of homes
Year builtnewer than191011% of homes13% of homes

About 18 Union Ave

How much is 18 Union Ave, Windham, CT worth?

The TopHap Estimate for 18 Union Ave, Windham, CT is $205,007 as of Aug 30, 2026. The likely range is $183,349 to $226,665. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Union Ave, Windham, CT last sell?

18 Union Ave, Windham, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18 Union Ave, Windham, CT?

18 Union Ave, Windham, CT has 3 bedrooms, 1.5 bathrooms, 1,036 square feet of living space and a 0.33-acre lot.

When was 18 Union Ave, Windham, CT built?

18 Union Ave, Windham, CT was built in 1910, making it 116 years old. The building has 2 stories.

What schools serve 18 Union Ave, Windham, CT?

18 Union Ave, Windham, CT is assigned to Natchaug School (elementary), rated C-; Windham High School (high), rated D; Windham Middle School (middle), rated C-. All sit in Windham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Union Ave, Windham, CT compare to other homes in Windham 06280?

Among the 1,190 homes in Windham 06280, it is worth more than almost none of them ($205,007 against a typical $352,995), its price per square foot is higher than 20% of them ($198 against a typical $235), it is bigger than 14% of them (1,036 ft² against a typical 1,456 ft²), its lot is bigger than 9% of them (0.33 ac against a typical 1.29 ac) and it is newer than 11% of them (1910 against a typical 1968). Measured against all of Southeastern Connecticut County, it is worth more than 3% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 18 Union Ave, Windham, CT?

The 2025 property tax bill for 18 Union Ave, Windham, CT was $3,016. The county assessed it at $101,040.

More homes on Union Ave

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Assigned schools

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