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Single Family ResidenceResidential
$413,628$295 / 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 Aug 30, 2026
Last sold for $352,000 on Jan 31, 2024

21 ALTAIR AVE

PLYMOUTH, CT 06782
3
Beds
2
Baths
1,404 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.
0.93 ac
Lot SizeThe size of the land the home sits on, from county records.
1989
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$414K
$381K low$446K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$352,000 · Jan 31, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,121 (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.$179,970 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$52,570
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$127,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$179,970
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$125,979

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.39
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
56
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
98
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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.Raised Ranch
CountyNAUGATUCK VALLEY
Lot (acres)The size of the land the home sits on, from county records.0.93
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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, 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(5)

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
Plymouth Center School
Elementary · Grades PK–2 · 0.1 mi
H
Terryville High SchoolB
High · Grades 9–12 · 1.3 mi
M
Eli Terry Jr. Middle SchoolB-
Middle · Grades 6–8 · 2.4 mi

District: Plymouth School District

Neighborhood · ZIP 06782These 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.95
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.68

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.9.9%
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.1,870
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.249 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$101,979
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$111,882
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%

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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 Altair 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 71% of homes in Plymouth 06782
  • Costs more per square foot than 83% of homes in Plymouth 06782
  • Has a bigger lot than 75% of homes in Naugatuck Valley County
  • Newer than 81% of homes in Naugatuck Valley County

What homes are worth in Plymouth 06782

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

This home
$208K$665K

This home is worth more than 71% of homes in Plymouth 06782.

How it measures up in Plymouth 06782

The dot is this home. The mark in the middle is the typical home in Plymouth 06782.

Estimated value$413,628
CheaperTypical $353,219Pricier

Pricier than 71% of homes nearby

Price per ft²$295
CheaperTypical $246Pricier

Pricier than 83% of homes nearby

Living area1,404 ft²
SmallerTypical 1,510 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.93 ac
SmallerTypical 0.92 acBigger

Bigger than 53% of homes nearby

Year built1989
OlderTypical 1960Newer

Newer than 76% of homes nearby

How 21 Altair Ave ranks against every home in each area.
MeasureThis homePlymouth 06782Naugatuck Valley County
Estimated valuepricier than$413,62871% of homes57% of homes
Price per ft²pricier than$29583% of homes71% of homes
Living areabigger than1,404 ft²44% of homes45% of homes
Lot sizebigger than0.93 ac53% of homes75% of homes
Year builtnewer than198976% of homes81% of homes

About 21 Altair Ave

How much is 21 Altair Ave, Plymouth, CT worth?

The TopHap Estimate for 21 Altair Ave, Plymouth, CT is $413,628 as of Aug 30, 2026. The likely range is $381,410 to $445,846. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Altair Ave, Plymouth, CT last sell?

21 Altair Ave, Plymouth, CT last sold on Jan 31, 2024 for $352,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Altair Ave, Plymouth, CT?

21 Altair Ave, Plymouth, CT has 3 bedrooms, 2 bathrooms, 1,404 square feet of living space and a 0.93-acre lot.

When was 21 Altair Ave, Plymouth, CT built?

21 Altair Ave, Plymouth, CT was built in 1989, making it 37 years old. It is a raised ranch home. The building has 1 story.

What schools serve 21 Altair Ave, Plymouth, CT?

21 Altair Ave, Plymouth, CT is assigned to Plymouth Center School (elementary); Terryville High School (high), rated B; Eli Terry Jr. Middle School (middle), rated B-. All sit in Plymouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Altair Ave, Plymouth, CT compare to other homes in Plymouth 06782?

Among the 926 homes in Plymouth 06782, it is worth more than 71% of them ($413,628 against a typical $353,219), its price per square foot is higher than 83% of them ($295 against a typical $246), it is bigger than 44% of them (1,404 ft² against a typical 1,510 ft²), its lot is bigger than 53% of them (0.93 ac against a typical 0.92 ac) and it is newer than 76% of them (1989 against a typical 1960). Measured against all of Naugatuck Valley County, it is worth more than 57% 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 Altair Ave, Plymouth, CT?

The 2025 property tax bill for 21 Altair Ave, Plymouth, CT was $7,121. The county assessed it at $179,970.

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