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CondominiumResidential
$940,625$688 / 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 88How 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 $810,000 on Dec 19, 2024

18 ARTHER ST

GREENWICH, CT 06831
Building report
3
Beds
2.5
Baths
1,368 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
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

$941K
$828K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$810,000 · Dec 19, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,321 (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.$507,570 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$507,570
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$401,660
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$876,653

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.50
38
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.
65
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
94
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
49
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 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
Lot (acres)The size of the land the home sits on, from county records.0.12
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
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(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.

M
Western Middle SchoolA-
Middle · Grades 6–8 · 0.6 mi
E
Glenville SchoolA
Elementary · Grades KG–5 · 1.6 mi
H
Greenwich High SchoolA+
High · Grades 9–12 · 2.4 mi

District: Greenwich School District

Neighborhood · ZIP 06831These 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.76
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 100.105

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
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.17,909
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.648 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$210,519
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$312,404
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

18 Arther 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 91% of homes in Greenwich 06831
  • Costs more per square foot than 82% of homes in Western Connecticut County
  • Smaller than 92% of homes in Greenwich 06831
  • Among the smallest lots in Greenwich 06831
  • Newer than 91% of homes in Western Connecticut County

What homes are worth in Greenwich 06831

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

This home
$709K$10M

This home is worth more than 9% of homes in Greenwich 06831.

How it measures up in Greenwich 06831

The dot is this home. The mark in the middle is the typical home in Greenwich 06831.

Estimated value$940,625
CheaperTypical $2,179,173Pricier

Pricier than 9% of homes nearby

Price per ft²$688
CheaperTypical $705Pricier

Pricier than 46% of homes nearby

Living area1,368 ft²
SmallerTypical 3,075 ft²Bigger

Bigger than 8% of homes nearby

Lot size0.12 ac
SmallerTypical 1.39 acBigger

Smaller than almost all homes nearby

Year built2003
OlderTypical 1966Newer

Newer than 89% of homes nearby

How 18 Arther St ranks against every home in each area.
MeasureThis homeGreenwich 06831Western Connecticut County
Estimated valuepricier than$940,6259% of homes59% of homes
Price per ft²pricier than$68846% of homes82% of homes
Living areabigger than1,368 ft²8% of homes27% of homes
Lot sizebigger than0.12 acalmost no homes4% of homes
Year builtnewer than200389% of homes91% of homes

About 18 Arther St

How much is 18 Arther St, Greenwich, CT worth?

The TopHap Estimate for 18 Arther St, Greenwich, CT is $940,625 as of Oct 21, 2026. The likely range is $828,409 to $1,052,841. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Arther St, Greenwich, CT last sell?

18 Arther St, Greenwich, CT last sold on Dec 19, 2024 for $810,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 18 Arther St, Greenwich, CT?

18 Arther St, Greenwich, CT has 3 bedrooms, 2.5 bathrooms, 1,368 square feet of living space and a 0.12-acre lot.

When was 18 Arther St, Greenwich, CT built?

18 Arther St, Greenwich, CT was built in 2003, making it 23 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 18 Arther St, Greenwich, CT?

18 Arther St, Greenwich, CT is assigned to Western Middle School (middle), rated A-; Glenville School (elementary), 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 18 Arther St, Greenwich, CT compare to other homes in Greenwich 06831?

Among the 5,196 homes in Greenwich 06831, it is worth more than 9% of them ($940,625 against a typical $2,179,173), its price per square foot is higher than 46% of them ($688 against a typical $705), it is bigger than 8% of them (1,368 ft² against a typical 3,075 ft²), its lot is bigger than almost none of them (0.12 ac against a typical 1.39 ac) and it is newer than 89% of them (2003 against a typical 1966). Measured against all of Western Connecticut 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 18 Arther St, Greenwich, CT?

The 2026 property tax bill for 18 Arther St, Greenwich, CT was $5,321. The county assessed it at $507,570.

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