Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$390,095$234 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $112,500 on Apr 27, 1992

89 TREADWELL AVE

THOMASTON, CT 06787
3
Beds
2 / 1
Baths
1,670 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.
0.42 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$390K
$359K low$421K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$112,500 · Apr 27, 1992

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,450 (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.$152,180 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$42,350
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$109,830
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$152,180
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$106,526

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.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%

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
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyNAUGATUCK VALLEY
Lot (acres)The size of the land the home sits on, from county records.0.42
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Electric
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.In-Ground Pool

Transaction History(4)

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
Black Rock SchoolC-
Elementary · Grades PK–3 · 2.4 mi
M
Thomaston High SchoolB-
Middle · Grades 7–12 · 2.4 mi

District: Thomaston School District

Neighborhood · ZIP 06787These 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.59
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.95%
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.4.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.7,823
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.624 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,522
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$124,660
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.52 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

Owner Tools

Do you own this home?
Claim this home

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

89 Treadwell 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.

  • Worth more than 65% of homes in Thomaston 06787
  • Costs less per square foot than 68% of homes in Naugatuck Valley County
  • Has a smaller lot than 69% of homes in Thomaston 06787
  • Older than 74% of homes in Naugatuck Valley County

What homes are worth in Thomaston 06787

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

This home
$180K$635K

This home is worth more than 65% of homes in Thomaston 06787.

How it measures up in Thomaston 06787

The dot is this home. The mark in the middle is the typical home in Thomaston 06787.

Estimated value$390,095
CheaperTypical $340,008Pricier

Pricier than 65% of homes nearby

Price per ft²$234
CheaperTypical $228Pricier

Pricier than 56% of homes nearby

Living area1,670 ft²
SmallerTypical 1,524 ft²Bigger

Bigger than 57% of homes nearby

Lot size0.42 ac
SmallerTypical 0.57 acBigger

Bigger than 31% of homes nearby

Year built1950
OlderTypical 1968Newer

Newer than 29% of homes nearby

How 89 Treadwell Ave ranks against every home in each area.
MeasureThis homeThomaston 06787Naugatuck Valley County
Estimated valuepricier than$390,09565% of homes50% of homes
Price per ft²pricier than$23456% of homes32% of homes
Living areabigger than1,670 ft²57% of homes58% of homes
Lot sizebigger than0.42 ac31% of homes53% of homes
Year builtnewer than195029% of homes26% of homes

About 89 Treadwell Ave

How much is 89 Treadwell Ave, Thomaston, CT worth?

The TopHap Estimate for 89 Treadwell Ave, Thomaston, CT is $390,095 as of Oct 21, 2026. The likely range is $359,107 to $421,083. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 89 Treadwell Ave, Thomaston, CT last sell?

89 Treadwell Ave, Thomaston, CT last sold on Apr 27, 1992 for $112,500, according to the county's recorded deed.

How big is 89 Treadwell Ave, Thomaston, CT?

89 Treadwell Ave, Thomaston, CT has 3 bedrooms, 2 bathrooms, 1,670 square feet of living space and a 0.42-acre lot.

When was 89 Treadwell Ave, Thomaston, CT built?

89 Treadwell Ave, Thomaston, CT was built in 1950, making it 76 years old. It is a colonial home. The building has 2 stories.

What schools serve 89 Treadwell Ave, Thomaston, CT?

89 Treadwell Ave, Thomaston, CT is assigned to Black Rock School (elementary), rated C-; Thomaston High School (middle), rated B-. All sit in Thomaston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 89 Treadwell Ave, Thomaston, CT compare to other homes in Thomaston 06787?

Among the 2,721 homes in Thomaston 06787, it is worth more than 65% of them ($390,095 against a typical $340,008), its price per square foot is higher than 56% of them ($234 against a typical $228), it is bigger than 57% of them (1,670 ft² against a typical 1,524 ft²), its lot is bigger than 31% of them (0.42 ac against a typical 0.57 ac) and it is newer than 29% of them (1950 against a typical 1968). Measured against all of Naugatuck Valley County, it is worth more than 50% 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 89 Treadwell Ave, Thomaston, CT?

The 2025 property tax bill for 89 Treadwell Ave, Thomaston, CT was $5,450. The county assessed it at $152,180.

More homes on Treadwell Ave

Closest homes

More homes in Thomaston 06787

Assigned schools

Explore the area

See this home in context

Open 89 Treadwell Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map