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Single Family ResidenceResidential
$343,379$222 / 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 97How 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
Last sold for $213,000 on May 5, 2021

21 WARREN ST

WATERBURY, CT 06706
3
Beds
1
Baths
1,546 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
1
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

$343K
$332K low$355K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$213,000 · May 5, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,653 (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.$153,510 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,890
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$137,620
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$153,510
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$294,171

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.Ranch
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.1979
Lot (acres)The size of the land the home sits on, from county records.0.16
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.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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.Deck

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
Washington Elementary SchoolD-
Elementary · Grades KG–5 · 0.4 mi
M
West Side Middle SchoolD
Middle · Grades 6–8 · 1.6 mi
H
Crosby High SchoolF
High · Grades 9–12 · 3.1 mi

District: Waterbury School District

Neighborhood · ZIP 06706These 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.126
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.70

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.9.9%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.24%
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.16,856
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,038 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$56,953
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$71,096
Average tempThe average temperature here across a full year.49°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.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

21 Warren 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 more than 93% of homes in Hopeville
  • Costs less per square foot than 75% of homes in Naugatuck Valley County
  • Bigger than 74% of homes in Hopeville
  • Has a smaller lot than 84% of homes in Naugatuck Valley County
  • Older than 71% of homes in Naugatuck Valley County

What homes are worth in Waterbury 06706

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

This home
$103K$431K

This home is worth more than 85% of homes in Waterbury 06706.

How it measures up in Waterbury 06706

The dot is this home. The mark in the middle is the typical home in Waterbury 06706.

Estimated value$343,379
CheaperTypical $281,443Pricier

Pricier than 85% of homes nearby

Price per ft²$222
CheaperTypical $234Pricier

Pricier than 44% of homes nearby

Living area1,546 ft²
SmallerTypical 1,260 ft²Bigger

Bigger than 68% of homes nearby

Lot size0.16 ac
SmallerTypical 0.19 acBigger

Bigger than 40% of homes nearby

Year built1953
OlderTypical 1952Newer

Newer than 53% of homes nearby

How 21 Warren St ranks against every home in each area.
MeasureThis homeHopevilleWaterbury 06706Naugatuck Valley County
Estimated valuepricier than$343,37993% of homes85% of homes37% of homes
Price per ft²pricier than$22237% of homes44% of homes25% of homes
Living areabigger than1,546 ft²74% of homes68% of homes53% of homes
Lot sizebigger than0.16 ac44% of homes40% of homes16% of homes
Year builtnewer than195352% of homes53% of homes29% of homes

About 21 Warren St

How much is 21 Warren St, Waterbury, CT worth?

The TopHap Estimate for 21 Warren St, Waterbury, CT is $343,379 as of Sep 24, 2026. The likely range is $331,723 to $355,035. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Warren St, Waterbury, CT last sell?

21 Warren St, Waterbury, CT last sold on May 5, 2021 for $213,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Warren St, Waterbury, CT?

21 Warren St, Waterbury, CT has 3 bedrooms, 1 bathrooms, 1,546 square feet of living space and a 0.16-acre lot.

When was 21 Warren St, Waterbury, CT built?

21 Warren St, Waterbury, CT was built in 1953, making it 73 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Warren St, Waterbury, CT?

21 Warren St, Waterbury, CT is assigned to Washington Elementary School (elementary), rated D-; West Side Middle School (middle), rated D; Crosby High School (high), rated F. All sit in Waterbury School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Warren St, Waterbury, CT compare to other homes in Waterbury 06706?

Among the 3,471 homes in Waterbury 06706, it is worth more than 85% of them ($343,379 against a typical $281,443), its price per square foot is higher than 44% of them ($222 against a typical $234), it is bigger than 68% of them (1,546 ft² against a typical 1,260 ft²), its lot is bigger than 40% of them (0.16 ac against a typical 0.19 ac) and it is newer than 53% of them (1953 against a typical 1952). Measured against all of Naugatuck Valley County, it is worth more than 37% 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 21 Warren St, Waterbury, CT?

The 2026 property tax bill for 21 Warren St, Waterbury, CT was $6,653. The county assessed it at $153,510.

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