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CondominiumResidential
$858,976$523 / 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 96How 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 $850,000 on Jul 7, 2026

24 DECATUR ST

COS COB, CT 06807
Building report
2
Beds
2.5
Baths
1,643 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.
1980
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$859K
$827K low$891K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$850,000 · Jul 7, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,876 (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.$560,490 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$560,490
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$444,780
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$840,966

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyWESTERN CONNECTICUT
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
Cos Cob SchoolB+
Elementary · Grades KG–5 · 0.5 mi
M
Central Middle SchoolA
Middle · Grades 6–8 · 0.7 mi
H
Greenwich High SchoolA+
High · Grades 9–12 · 1.1 mi

District: Greenwich School District

Neighborhood · ZIP 06807These 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.54
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.103

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.7,630
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,321 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$180,144
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$235,340
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.51 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

24 Decatur 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 less than 94% of homes in Cos Cob 06807
  • Costs less per square foot than 94% of homes in Cos Cob 06807
  • Smaller than 80% of homes in Cos Cob 06807
  • Newer than 76% of homes in Cos Cob 06807

What homes are worth in Cos Cob 06807

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

This home
$674K$4.2M

This home is worth more than 6% of homes in Cos Cob 06807.

How it measures up in Cos Cob 06807

The dot is this home. The mark in the middle is the typical home in Cos Cob 06807.

Estimated value$858,976
CheaperTypical $1,751,548Pricier

Pricier than 6% of homes nearby

Price per ft²$523
CheaperTypical $750Pricier

Pricier than 6% of homes nearby

Living area1,643 ft²
SmallerTypical 2,388 ft²Bigger

Bigger than 20% of homes nearby

Year built1980
OlderTypical 1963Newer

Newer than 76% of homes nearby

How 24 Decatur St ranks against every home in each area.
MeasureThis homeCos Cob 06807Western Connecticut County
Estimated valuepricier than$858,9766% of homes55% of homes
Price per ft²pricier than$5236% of homes69% of homes
Living areabigger than1,643 ft²20% of homes38% of homes
Year builtnewer than198076% of homes69% of homes

About 24 Decatur St

How much is 24 Decatur St, Cos Cob, CT worth?

The TopHap Estimate for 24 Decatur St, Cos Cob, CT is $858,976 as of Sep 24, 2026. The likely range is $827,414 to $890,538. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 24 Decatur St, Cos Cob, CT last sell?

24 Decatur St, Cos Cob, CT last sold on Jul 7, 2026 for $850,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 24 Decatur St, Cos Cob, CT?

24 Decatur St, Cos Cob, CT has 2 bedrooms, 2.5 bathrooms and 1,643 square feet of living space.

When was 24 Decatur St, Cos Cob, CT built?

24 Decatur St, Cos Cob, CT was built in 1980, making it 46 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 24 Decatur St, Cos Cob, CT?

24 Decatur St, Cos Cob, CT is assigned to Cos Cob School (elementary), rated B+; Central Middle School (middle), rated A; Greenwich High School (high), rated A+. All sit in Greenwich School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 24 Decatur St, Cos Cob, CT compare to other homes in Cos Cob 06807?

Among the 2,396 homes in Cos Cob 06807, it is worth more than 6% of them ($858,976 against a typical $1,751,548), its price per square foot is higher than 6% of them ($523 against a typical $750), it is bigger than 20% of them (1,643 ft² against a typical 2,388 ft²) and it is newer than 76% of them (1980 against a typical 1963). Measured against all of Western Connecticut County, it is worth more than 55% 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 24 Decatur St, Cos Cob, CT?

The 2026 property tax bill for 24 Decatur St, Cos Cob, CT was $5,876. The county assessed it at $560,490.

More homes on Decatur St

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More homes in Cos Cob 06807

Assigned schools

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