Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$426,591$234 / 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 Aug 30, 2026

21 PROSPECT ST

OAKVILLE, CT 06779
4
Beds
2
Baths
1,822 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.
1955
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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

$427K
$397K low$457K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,254 (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.$208,180 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$42,560
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$165,620
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$208,180
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$145,726

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.Cape Cod
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.1997
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.Asphalt
HeatingThe type of heating system in the home.Hot Water
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

Transaction History(3)

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
Swift Middle SchoolB
Middle · Grades 6–8 · 0.2 mi
H
Watertown High SchoolC
High · Grades 9–12 · 0.9 mi
E
John Trumbull Primary School
Elementary · Grades PK–2 · 1.5 mi

District: Watertown School District

Neighborhood · ZIP 06779These 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.108
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.66

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.96%
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.3.9%
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.7,020
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,441 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$78,896
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$100,276
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

21 Prospect 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 83% of homes in Oakville 06779
  • Costs less per square foot than 81% of homes in Oakville 06779
  • Bigger than 81% of homes in Oakville 06779
  • Has a smaller lot than 95% of homes in Oakville 06779
  • Older than 67% of homes in Naugatuck Valley County

What homes are worth in Oakville 06779

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

This home
$218K$578K

This home is worth more than 83% of homes in Oakville 06779.

How it measures up in Oakville 06779

The dot is this home. The mark in the middle is the typical home in Oakville 06779.

Estimated value$426,591
CheaperTypical $361,100Pricier

Pricier than 83% of homes nearby

Price per ft²$234
CheaperTypical $279Pricier

Pricier than 19% of homes nearby

Living area1,822 ft²
SmallerTypical 1,288 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.14 ac
SmallerTypical 0.25 acBigger

Bigger than 5% of homes nearby

Year built1955
OlderTypical 1956Newer

Newer than 49% of homes nearby

How 21 Prospect St ranks against every home in each area.
MeasureThis homeOakville 06779Naugatuck Valley County
Estimated valuepricier than$426,59183% of homes59% of homes
Price per ft²pricier than$23419% of homes33% of homes
Living areabigger than1,822 ft²81% of homes65% of homes
Lot sizebigger than0.14 ac5% of homes10% of homes
Year builtnewer than195549% of homes33% of homes

About 21 Prospect St

How much is 21 Prospect St, Oakville, CT worth?

The TopHap Estimate for 21 Prospect St, Oakville, CT is $426,591 as of Aug 30, 2026. The likely range is $396,558 to $456,624. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Prospect St, Oakville, CT last sell?

21 Prospect St, Oakville, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Prospect St, Oakville, CT?

21 Prospect St, Oakville, CT has 4 bedrooms, 2 bathrooms, 1,822 square feet of living space and a 0.14-acre lot.

When was 21 Prospect St, Oakville, CT built?

21 Prospect St, Oakville, CT was built in 1955, making it 71 years old. It is a cape cod home. The building has 2 stories.

What schools serve 21 Prospect St, Oakville, CT?

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

How does 21 Prospect St, Oakville, CT compare to other homes in Oakville 06779?

Among the 2,756 homes in Oakville 06779, it is worth more than 83% of them ($426,591 against a typical $361,100), its price per square foot is higher than 19% of them ($234 against a typical $279), it is bigger than 81% of them (1,822 ft² against a typical 1,288 ft²), its lot is bigger than 5% of them (0.14 ac against a typical 0.25 ac) and it is newer than 49% of them (1955 against a typical 1956). Measured against all of Naugatuck Valley County, it is worth more than 59% 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 Prospect St, Oakville, CT?

The 2025 property tax bill for 21 Prospect St, Oakville, CT was $6,254. The county assessed it at $208,180.

More homes on Prospect St

Closest homes

More homes in Oakville 06779

Assigned schools

Explore the area

See this home in context

Open 21 Prospect 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