Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$354,173$205 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

18 KNOWLTON ST

WATERTOWN, CT 06795
3
Beds
2.5
Baths
1,726 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
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

$354K
$321K low$388K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,134 (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.$204,190 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$44,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$160,090
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$204,190
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$142,933

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
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.1994
Lot (acres)The size of the land the home sits on, from county records.0.22
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

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

E
John Trumbull Primary School
Elementary · Grades PK–2 · 1.0 mi
H
Watertown High SchoolC+
High · Grades 9–12 · 1.1 mi
M
Swift Middle SchoolB-
Middle · Grades 6–8 · 1.9 mi

District: Watertown School District

Neighborhood · ZIP 06795These 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.65
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 100.71

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
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.15,556
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.582 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$99,118
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,802
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

18 Knowlton 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 75% of homes in Watertown 06795
  • Costs less per square foot than 87% of homes in Watertown 06795
  • Has a smaller lot than 95% of homes in Watertown 06795
  • Older than 89% of homes in Watertown 06795

What homes are worth in Watertown 06795

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

This home
$197K$875K

This home is worth more than 25% of homes in Watertown 06795.

How it measures up in Watertown 06795

The dot is this home. The mark in the middle is the typical home in Watertown 06795.

Estimated value$354,173
CheaperTypical $426,758Pricier

Pricier than 25% of homes nearby

Price per ft²$205
CheaperTypical $250Pricier

Pricier than 13% of homes nearby

Living area1,726 ft²
SmallerTypical 1,696 ft²Bigger

Bigger than 51% of homes nearby

Lot size0.22 ac
SmallerTypical 0.68 acBigger

Bigger than 5% of homes nearby

Year built1928
OlderTypical 1973Newer

Newer than 11% of homes nearby

How 18 Knowlton St ranks against every home in each area.
MeasureThis homeWatertown 06795Naugatuck Valley County
Estimated valuepricier than$354,17325% of homes40% of homes
Price per ft²pricier than$20513% of homes17% of homes
Living areabigger than1,726 ft²51% of homes62% of homes
Lot sizebigger than0.22 ac5% of homes25% of homes
Year builtnewer than192811% of homes15% of homes

About 18 Knowlton St

How much is 18 Knowlton St, Watertown, CT worth?

The TopHap Estimate for 18 Knowlton St, Watertown, CT is $354,173 as of Sep 24, 2026. The likely range is $320,671 to $387,675. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Knowlton St, Watertown, CT last sell?

18 Knowlton St, Watertown, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18 Knowlton St, Watertown, CT?

18 Knowlton St, Watertown, CT has 3 bedrooms, 2.5 bathrooms, 1,726 square feet of living space and a 0.22-acre lot.

When was 18 Knowlton St, Watertown, CT built?

18 Knowlton St, Watertown, CT was built in 1928, making it 98 years old. It is a conventional home. The building has 2 stories.

What schools serve 18 Knowlton St, Watertown, CT?

18 Knowlton St, Watertown, CT is assigned to John Trumbull Primary School (elementary); Watertown High School (high), rated C+; Swift Middle School (middle), rated B-. All sit in Watertown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Knowlton St, Watertown, CT compare to other homes in Watertown 06795?

Among the 5,098 homes in Watertown 06795, it is worth more than 25% of them ($354,173 against a typical $426,758), its price per square foot is higher than 13% of them ($205 against a typical $250), it is bigger than 51% of them (1,726 ft² against a typical 1,696 ft²), its lot is bigger than 5% of them (0.22 ac against a typical 0.68 ac) and it is newer than 11% of them (1928 against a typical 1973). Measured against all of Naugatuck Valley County, it is worth more than 40% 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 Knowlton St, Watertown, CT?

The 2025 property tax bill for 18 Knowlton St, Watertown, CT was $6,134. The county assessed it at $204,190.

More homes on Knowlton St

Closest homes

More homes in Watertown 06795

Assigned schools

Explore the area

See this home in context

Open 18 Knowlton St 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