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Single Family ResidenceResidential
$554,901$322 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $429,000 on Aug 15, 2022

21 PLANK RD

PROSPECT, CT 06712
5
Beds
3
Baths
1,724 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.
1.6 ac
Lot SizeThe size of the land the home sits on, from county records.
1974
Year BuiltThe year the home was originally built, according to county records.
1
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$555K
$518K low$592K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$429,000 · Aug 15, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,879 (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.$308,140 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$83,160
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$224,980
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$192,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$215,698

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
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.1996
Lot (acres)The size of the land the home sits on, from county records.1.60
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.Baseboard
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.In-Ground Pool
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.

M
Long River Middle SchoolB
Middle · Grades 6–8 · 1.8 mi
E
Prospect Elementary SchoolB+
Elementary · Grades KG–5 · 2.0 mi
H
Woodland Regional High SchoolB
High · Grades 9–12 · 9.4 mi

District: Regional School District 16

Neighborhood · ZIP 06712These 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.77
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.9,938
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.690 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$123,145
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$129,530
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 Plank Rd 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 77% of homes in Naugatuck Valley County
  • Costs more per square foot than 79% of homes in Naugatuck Valley County
  • Has a bigger lot than 88% of homes in Naugatuck Valley County

What homes are worth in Prospect 06712

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

This home
$300K$771K

This home is worth more than 73% of homes in Prospect 06712.

How it measures up in Prospect 06712

The dot is this home. The mark in the middle is the typical home in Prospect 06712.

Estimated value$554,901
CheaperTypical $479,525Pricier

Pricier than 73% of homes nearby

Price per ft²$322
CheaperTypical $279Pricier

Pricier than 74% of homes nearby

Living area1,724 ft²
SmallerTypical 1,628 ft²Bigger

Bigger than 54% of homes nearby

Lot size1.6 ac
SmallerTypical 0.93 acBigger

Bigger than 84% of homes nearby

Year built1974
OlderTypical 1983Newer

Newer than 43% of homes nearby

How 21 Plank Rd ranks against every home in each area.
MeasureThis homeProspect 06712Naugatuck Valley County
Estimated valuepricier than$554,90173% of homes77% of homes
Price per ft²pricier than$32274% of homes79% of homes
Living areabigger than1,724 ft²54% of homes61% of homes
Lot sizebigger than1.6 ac84% of homes88% of homes
Year builtnewer than197443% of homes59% of homes

About 21 Plank Rd

How much is 21 Plank Rd, Prospect, CT worth?

The TopHap Estimate for 21 Plank Rd, Prospect, CT is $554,901 as of Jul 14, 2026. The likely range is $518,040 to $591,762. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Plank Rd, Prospect, CT last sell?

21 Plank Rd, Prospect, CT last sold on Aug 15, 2022 for $429,000, according to the county's recorded deed.

How big is 21 Plank Rd, Prospect, CT?

21 Plank Rd, Prospect, CT has 5 bedrooms, 3 bathrooms, 1,724 square feet of living space and a 1.60-acre lot.

When was 21 Plank Rd, Prospect, CT built?

21 Plank Rd, Prospect, CT was built in 1974, making it 52 years old. It is a raised ranch home. The building has 1 story.

What schools serve 21 Plank Rd, Prospect, CT?

21 Plank Rd, Prospect, CT is assigned to Long River Middle School (middle), rated B; Prospect Elementary School (elementary), rated B+; Woodland Regional High School (high), rated B. All sit in Regional School District 16. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Plank Rd, Prospect, CT compare to other homes in Prospect 06712?

Among the 3,651 homes in Prospect 06712, it is worth more than 73% of them ($554,901 against a typical $479,525), its price per square foot is higher than 74% of them ($322 against a typical $279), it is bigger than 54% of them (1,724 ft² against a typical 1,628 ft²), its lot is bigger than 84% of them (1.6 ac against a typical 0.93 ac) and it is newer than 43% of them (1974 against a typical 1983). Measured against all of Naugatuck Valley County, it is worth more than 77% 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 Plank Rd, Prospect, CT?

The 2025 property tax bill for 21 Plank Rd, Prospect, CT was $7,879. The county assessed it at $308,140.

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