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Single Family ResidenceResidential
$2,306,357$423 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $1,275,000 on Sep 4, 2003

18 ROCKY BROOK RD

NEW CANAAN, CT 06840
5
Beds
4.5
Baths
5,448 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.
3.08 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$2.3M
$2.1M low$2.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,275,000 · Sep 4, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$21,792 (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.$1,284,360 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$551,250
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$733,110
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,284,360
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,484,519

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.44
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
19
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.
97
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
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.Colonial
CountyWESTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.3.08
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.No

Transaction History(6)

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
East SchoolA+
Elementary · Grades KG–4 · 3.5 mi
M
Saxe Middle SchoolA+
Middle · Grades 5–8 · 4.7 mi
H
New Canaan High SchoolA+
High · Grades 9–12 · 4.9 mi

District: New Canaan School District

Neighborhood · ZIP 06840These 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.58
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 100.94

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.43%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.23,002
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,022 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$236,636
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$377,925
Average tempThe average temperature here across a full year.51°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

18 Rocky Brook 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 87% of homes in Western Connecticut County
  • Costs less per square foot than 98% of homes in New Canaan 06840
  • Bigger than 96% of homes in Western Connecticut County
  • Has a bigger lot than 95% of homes in Western Connecticut County

What homes are worth in New Canaan 06840

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

This home
$476K$5.7M

This home is worth more than 52% of homes in New Canaan 06840.

How it measures up in New Canaan 06840

The dot is this home. The mark in the middle is the typical home in New Canaan 06840.

Estimated value$2,306,357
CheaperTypical $2,254,962Pricier

Pricier than 52% of homes nearby

Price per ft²$423
CheaperTypical $692Pricier

Pricier than 2% of homes nearby

Living area5,448 ft²
SmallerTypical 3,259 ft²Bigger

Bigger than 84% of homes nearby

Lot size3.08 ac
SmallerTypical 1.85 acBigger

Bigger than 86% of homes nearby

Year built1958
OlderTypical 1966Newer

Newer than 36% of homes nearby

How 18 Rocky Brook Rd ranks against every home in each area.
MeasureThis homeNew Canaan 06840Western Connecticut County
Estimated valuepricier than$2,306,35752% of homes87% of homes
Price per ft²pricier than$4232% of homes50% of homes
Living areabigger than5,448 ft²84% of homes96% of homes
Lot sizebigger than3.08 ac86% of homes95% of homes
Year builtnewer than195836% of homes37% of homes

About 18 Rocky Brook Rd

How much is 18 Rocky Brook Rd, New Canaan, CT worth?

The TopHap Estimate for 18 Rocky Brook Rd, New Canaan, CT is $2,306,357 as of Oct 21, 2026. The likely range is $2,053,559 to $2,559,155. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Rocky Brook Rd, New Canaan, CT last sell?

18 Rocky Brook Rd, New Canaan, CT last sold on Sep 4, 2003 for $1,275,000, according to the county's recorded deed.

How big is 18 Rocky Brook Rd, New Canaan, CT?

18 Rocky Brook Rd, New Canaan, CT has 5 bedrooms, 4.5 bathrooms, 5,448 square feet of living space and a 3.08-acre lot.

When was 18 Rocky Brook Rd, New Canaan, CT built?

18 Rocky Brook Rd, New Canaan, CT was built in 1958, making it 68 years old. It is a colonial home. The building has 2 stories.

What schools serve 18 Rocky Brook Rd, New Canaan, CT?

18 Rocky Brook Rd, New Canaan, CT is assigned to East School (elementary), rated A+; Saxe Middle School (middle), rated A+; New Canaan High School (high), rated A+. All sit in New Canaan School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Rocky Brook Rd, New Canaan, CT compare to other homes in New Canaan 06840?

Among the 6,751 homes in New Canaan 06840, it is worth more than 52% of them ($2,306,357 against a typical $2,254,962), its price per square foot is higher than 2% of them ($423 against a typical $692), it is bigger than 84% of them (5,448 ft² against a typical 3,259 ft²), its lot is bigger than 86% of them (3.08 ac against a typical 1.85 ac) and it is newer than 36% of them (1958 against a typical 1966). Measured against all of Western Connecticut County, it is worth more than 87% 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 18 Rocky Brook Rd, New Canaan, CT?

The 2026 property tax bill for 18 Rocky Brook Rd, New Canaan, CT was $21,792. The county assessed it at $1,284,360.

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