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Single Family ResidenceResidential
$318,868$226 / 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 84How 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 $210,000 on Aug 18, 2021

11 CLARKSON ST

ANSONIA, CT 06401
3
Beds
1.5
Baths
1,410 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
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

$319K
$268K low$370K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$210,000 · Aug 18, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,560 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$154,770 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$43,890
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$110,880
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$154,770
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$321,263

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.Conventional
CountyNAUGATUCK VALLEY
Lot (acres)The size of the land the home sits on, from county records.0.18
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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(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.

Foreclosure Filings(1)

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

E
Prendergast SchoolD
Elementary · Grades PK–5 · 2.0 mi

District: Ansonia School District

Neighborhood · ZIP 06401These 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.148
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.69

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.19,793
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,088 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,317
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,812
Average tempThe average temperature here across a full year.50°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.58%

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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

11 Clarkson 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.

  • Worth less than 87% of homes in Ansonia 06401
  • Costs less per square foot than 83% of homes in Ansonia 06401
  • Has a smaller lot than 77% of homes in Naugatuck Valley County
  • Older than 94% of homes in Naugatuck Valley County

What homes are worth in Ansonia 06401

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

This home
$215K$556K

This home is worth more than 13% of homes in Ansonia 06401.

How it measures up in Ansonia 06401

The dot is this home. The mark in the middle is the typical home in Ansonia 06401.

Estimated value$318,868
CheaperTypical $390,377Pricier

Pricier than 13% of homes nearby

Price per ft²$226
CheaperTypical $297Pricier

Pricier than 17% of homes nearby

Living area1,410 ft²
SmallerTypical 1,488 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.18 ac
SmallerTypical 0.23 acBigger

Bigger than 34% of homes nearby

Year built1900
OlderTypical 1955Newer

Newer than 22% of homes nearby

How 11 Clarkson St ranks against every home in each area.
MeasureThis homeAnsonia 06401Naugatuck Valley County
Estimated valuepricier than$318,86813% of homes29% of homes
Price per ft²pricier than$22617% of homes27% of homes
Living areabigger than1,410 ft²45% of homes45% of homes
Lot sizebigger than0.18 ac34% of homes23% of homes
Year builtnewer than190022% of homes6% of homes

About 11 Clarkson St

How much is 11 Clarkson St, Ansonia, CT worth?

The TopHap Estimate for 11 Clarkson St, Ansonia, CT is $318,868 as of Oct 21, 2026. The likely range is $267,877 to $369,859. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 11 Clarkson St, Ansonia, CT last sell?

11 Clarkson St, Ansonia, CT last sold on Aug 18, 2021 for $210,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 11 Clarkson St, Ansonia, CT?

11 Clarkson St, Ansonia, CT has 3 bedrooms, 1.5 bathrooms, 1,410 square feet of living space and a 0.18-acre lot.

When was 11 Clarkson St, Ansonia, CT built?

11 Clarkson St, Ansonia, CT was built in 1900, making it 126 years old. It is a conventional home. The building has 2 stories.

What schools serve 11 Clarkson St, Ansonia, CT?

11 Clarkson St, Ansonia, CT is assigned to Prendergast School (elementary), rated D. All sit in Ansonia School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 11 Clarkson St, Ansonia, CT compare to other homes in Ansonia 06401?

Among the 5,259 homes in Ansonia 06401, it is worth more than 13% of them ($318,868 against a typical $390,377), its price per square foot is higher than 17% of them ($226 against a typical $297), it is bigger than 45% of them (1,410 ft² against a typical 1,488 ft²), its lot is bigger than 34% of them (0.18 ac against a typical 0.23 ac) and it is newer than 22% of them (1900 against a typical 1955). Measured against all of Naugatuck Valley County, it is worth more than 29% 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 11 Clarkson St, Ansonia, CT?

The 2026 property tax bill for 11 Clarkson St, Ansonia, CT was $4,560. The county assessed it at $154,770.

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