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Single Family ResidenceResidential
$844,842$262 / 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 94How 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 $150,000 on Oct 21, 2004

21 KNOLL LN

ROCKY HILL, CT 06067
3
Beds
2.5
Baths
3,221 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
2005
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$845K
$792K low$898K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$150,000 · Oct 21, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,552 (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.$448,140 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$144,690
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$303,450
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$448,140
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$313,698

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.35
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
61
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
90
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
20
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

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.Ranch
CountyCAPITOL
Lot (acres)The size of the land the home sits on, from county records.0.46
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
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Spa/Hot Tub (Only)
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(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
West Hill SchoolA+
Elementary · Grades PK–3 · 0.5 mi
M
Albert D. Griswold Middle SchoolA
Middle · Grades 6–8 · 2.1 mi
H
Rocky Hill High SchoolB+
High · Grades 9–12 · 2.3 mi

District: Rocky Hill School District

Neighborhood · ZIP 06067These 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.48
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
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.20,649
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,480 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$104,932
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,528
Average tempThe average temperature here across a full year.49°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.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 Knoll Ln 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 96% of homes in Capitol County
  • Bigger than 95% of homes in Rocky Hill 06067
  • Newer than 95% of homes in Rocky Hill 06067

What homes are worth in Rocky Hill 06067

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

This home
$148K$1M

This home is worth more than 95% of homes in Rocky Hill 06067.

How it measures up in Rocky Hill 06067

The dot is this home. The mark in the middle is the typical home in Rocky Hill 06067.

Estimated value$844,842
CheaperTypical $418,897Pricier

Pricier than 95% of homes nearby

Price per ft²$262
CheaperTypical $271Pricier

Pricier than 43% of homes nearby

Living area3,221 ft²
SmallerTypical 1,478 ft²Bigger

Bigger than 95% of homes nearby

Lot size0.46 ac
SmallerTypical 0.46 acBigger

Bigger than 52% of homes nearby

Year built2005
OlderTypical 1976Newer

Newer than 95% of homes nearby

How 21 Knoll Ln ranks against every home in each area.
MeasureThis homeRocky Hill 06067Capitol County
Estimated valuepricier than$844,84295% of homes96% of homes
Price per ft²pricier than$26243% of homes54% of homes
Living areabigger than3,221 ft²95% of homes93% of homes
Lot sizebigger than0.46 ac52% of homes55% of homes
Year builtnewer than200595% of homes95% of homes

About 21 Knoll Ln

How much is 21 Knoll Ln, Rocky Hill, CT worth?

The TopHap Estimate for 21 Knoll Ln, Rocky Hill, CT is $844,842 as of Sep 24, 2026. The likely range is $791,706 to $897,978. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Knoll Ln, Rocky Hill, CT last sell?

21 Knoll Ln, Rocky Hill, CT last sold on Oct 21, 2004 for $150,000, according to the county's recorded deed.

How big is 21 Knoll Ln, Rocky Hill, CT?

21 Knoll Ln, Rocky Hill, CT has 3 bedrooms, 2.5 bathrooms, 3,221 square feet of living space and a 0.46-acre lot.

When was 21 Knoll Ln, Rocky Hill, CT built?

21 Knoll Ln, Rocky Hill, CT was built in 2005, making it 21 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Knoll Ln, Rocky Hill, CT?

21 Knoll Ln, Rocky Hill, CT is assigned to West Hill School (elementary), rated A+; Albert D. Griswold Middle School (middle), rated A; Rocky Hill High School (high), rated B+. All sit in Rocky Hill School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Knoll Ln, Rocky Hill, CT compare to other homes in Rocky Hill 06067?

Among the 6,664 homes in Rocky Hill 06067, it is worth more than 95% of them ($844,842 against a typical $418,897), its price per square foot is higher than 43% of them ($262 against a typical $271), it is bigger than 95% of them (3,221 ft² against a typical 1,478 ft²), its lot is bigger than 52% of them (0.46 ac against a typical 0.46 ac) and it is newer than 95% of them (2005 against a typical 1976). Measured against all of Capitol County, it is worth more than 96% 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 Knoll Ln, Rocky Hill, CT?

The 2025 property tax bill for 21 Knoll Ln, Rocky Hill, CT was $13,552. The county assessed it at $448,140.

More homes on Knoll Ln

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Assigned schools

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