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Duplex (2 Units, Any Combination)Residential

21 AVENUE B

NORWALK, CT 06854
4
Beds
3 / 2
Baths
2,198 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,968 (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.$417,070 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$131,040
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$286,030
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$417,070
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$291,949

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyWESTERN 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.1986
Lot (acres)The size of the land the home sits on, from county records.0.14
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.Shingle
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
Brookside Elmentary SchoolD+
Elementary · Grades KG–5 · 0.7 mi
H
McMahon High SchoolD
High · Grades 9–12 · 0.9 mi
M
Roton Middle SchoolC
Middle · Grades 6–8 · 1.5 mi

District: Norwalk School District

Neighborhood · ZIP 06854These 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.115
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 100.95

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.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.20%
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.32,225
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,999 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,188
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,350
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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 Avenue B 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.

  • Bigger than 85% of homes in Flax Hill
  • Has a smaller lot than 93% of homes in Western Connecticut County
  • Newer than 83% of homes in Flax Hill

How it measures up in Norwalk 06854

The dot is this home. The mark in the middle is the typical home in Norwalk 06854.

Living area2,198 ft²
SmallerTypical 1,401 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.14 ac
SmallerTypical 0.18 acBigger

Bigger than 25% of homes nearby

Year built1978
OlderTypical 1963Newer

Newer than 70% of homes nearby

How 21 Avenue B ranks against every home in each area.
MeasureThis homeFlax HillNorwalk 06854Western Connecticut County
Living areabigger than2,198 ft²85% of homes83% of homes57% of homes
Lot sizebigger than0.14 ac16% of homes25% of homes7% of homes
Year builtnewer than197883% of homes70% of homes67% of homes

About 21 Avenue B

When did 21 Avenue B, Norwalk, CT last sell?

21 Avenue B, Norwalk, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Avenue B, Norwalk, CT?

21 Avenue B, Norwalk, CT has 4 bedrooms, 3 bathrooms, 2,198 square feet of living space and a 0.14-acre lot.

When was 21 Avenue B, Norwalk, CT built?

21 Avenue B, Norwalk, CT was built in 1978, making it 48 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Avenue B, Norwalk, CT?

21 Avenue B, Norwalk, CT is assigned to Brookside Elmentary School (elementary), rated D+; McMahon High School (high), rated D; Roton Middle School (middle), rated C. All sit in Norwalk School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Avenue B, Norwalk, CT compare to other homes in Norwalk 06854?

Among the 6,586 homes in Norwalk 06854, it is bigger than 83% of them (2,198 ft² against a typical 1,401 ft²), its lot is bigger than 25% of them (0.14 ac against a typical 0.18 ac) and it is newer than 70% of them (1978 against a typical 1963). 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 Avenue B, Norwalk, CT?

The 2025 property tax bill for 21 Avenue B, Norwalk, CT was $9,968. The county assessed it at $417,070.

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