Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$593,393$237 / 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 91How 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 $327,000 on Jul 26, 2017

21 ROCKY RD W

HARWINTON, CT 06791
4
Beds
3
Baths
2,508 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.
2.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$593K
$538K low$649K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$327,000 · Jul 26, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,604 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$329,160 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$76,020
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$253,140
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$329,160
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$573,836

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.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
15
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
57
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.Colonial
CountyNORTHWEST HILLS
Lot (acres)The size of the land the home sits on, from county records.2.26
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
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

Transaction History(9)

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
Harwinton Consolidated SchoolB+
Elementary · Grades PK–4 · 3.8 mi
H
Lewis S. Mills High SchoolA
High · Grades 9–12 · 5.1 mi
M
Har-Bur Middle SchoolA-
Middle · Grades 5–8 · 5.1 mi

District: Regional School District 10

Neighborhood · ZIP 06791These 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.57
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.62

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.25%
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.0.9%
PopulationHow many people live in this area.5,135
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.166 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$112,415
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$129,457
Average tempThe average temperature here across a full year.47°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 Rocky Rd W 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 81% of homes in Harwinton 06791
  • Bigger than 79% of homes in Harwinton 06791
  • Has a bigger lot than 67% of homes in Northwest Hills County
  • Newer than 75% of homes in Northwest Hills County

What homes are worth in Harwinton 06791

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

This home
$251K$911K

This home is worth more than 81% of homes in Harwinton 06791.

How it measures up in Harwinton 06791

The dot is this home. The mark in the middle is the typical home in Harwinton 06791.

Estimated value$593,393
CheaperTypical $435,864Pricier

Pricier than 81% of homes nearby

Price per ft²$237
CheaperTypical $250Pricier

Pricier than 40% of homes nearby

Living area2,508 ft²
SmallerTypical 1,741 ft²Bigger

Bigger than 79% of homes nearby

Lot size2.26 ac
SmallerTypical 2 acBigger

Bigger than 59% of homes nearby

Year built1987
OlderTypical 1970Newer

Newer than 73% of homes nearby

How 21 Rocky Rd W ranks against every home in each area.
MeasureThis homeHarwinton 06791Northwest Hills County
Estimated valuepricier than$593,39381% of homes71% of homes
Price per ft²pricier than$23740% of homes39% of homes
Living areabigger than2,508 ft²79% of homes78% of homes
Lot sizebigger than2.26 ac59% of homes67% of homes
Year builtnewer than198773% of homes75% of homes

About 21 Rocky Rd W

How much is 21 Rocky Rd W, Harwinton, CT worth?

The TopHap Estimate for 21 Rocky Rd W, Harwinton, CT is $593,393 as of Sep 24, 2026. The likely range is $537,862 to $648,924. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Rocky Rd W, Harwinton, CT last sell?

21 Rocky Rd W, Harwinton, CT last sold on Jul 26, 2017 for $327,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Rocky Rd W, Harwinton, CT?

21 Rocky Rd W, Harwinton, CT has 4 bedrooms, 3 bathrooms, 2,508 square feet of living space and a 2.26-acre lot.

When was 21 Rocky Rd W, Harwinton, CT built?

21 Rocky Rd W, Harwinton, CT was built in 1987, making it 39 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Rocky Rd W, Harwinton, CT?

21 Rocky Rd W, Harwinton, CT is assigned to Harwinton Consolidated School (elementary), rated B+; Lewis S. Mills High School (high), rated A; Har-Bur Middle School (middle), rated A-. All sit in Regional School District 10. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rocky Rd W, Harwinton, CT compare to other homes in Harwinton 06791?

Among the 2,313 homes in Harwinton 06791, it is worth more than 81% of them ($593,393 against a typical $435,864), its price per square foot is higher than 40% of them ($237 against a typical $250), it is bigger than 79% of them (2,508 ft² against a typical 1,741 ft²), its lot is bigger than 59% of them (2.26 ac against a typical 2 ac) and it is newer than 73% of them (1987 against a typical 1970). Measured against all of Northwest Hills County, it is worth more than 71% 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 Rocky Rd W, Harwinton, CT?

The 2026 property tax bill for 21 Rocky Rd W, Harwinton, CT was $7,604. The county assessed it at $329,160.

More homes on Rocky Rd W

Closest homes

More homes in Harwinton 06791

Assigned schools

Explore the area

See this home in context

Open 21 Rocky Rd W 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