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Duplex (2 Units, Any Combination)Residential
Last sold for $650,000 on Sep 10, 2025

20 CHURCH ST W

GREENWICH, CT 06830
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1918
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 194099 units380–2,060 ft²
$122M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$1.2M
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$923
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+16.7%vs the Greenwich ZIP median sale $/ft² ($791)

Sales Performance

$1.3M
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+21.2%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
3
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
3.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+4.8%per yeartypical hold 6.4 yrsfrom 179 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19871992199820032009201420202025
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19871992199820032009201420202025

283 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$315K$991K$1.7M$2.3M380 ft²716 ft²1,052 ft²1,388 ft²1,724 ft²2,060 ft²
1 bd2 bd3 bd
1 bed
24 units
2 bed
50 units
3 bed
25 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
1 bd · 1 ba · 1,038 ft²
10 units
2 bd · 2 ba · 1,248 ft²
8 units
2 bd · 2 ba · 1,284 ft²
7 units
2 bd · 2 ba · 1,318 ft²
6 units
3 bd · 2.5 ba · 1,578 ft²
6 units
3 bd · 2 ba · 1,634 ft²
6 units
1 bd · 1 ba · 493 ft²
5 units
3 bd · 3 ba · 1,858 ft²
4 units
2 bd · 2.5 ba · 1,284 ft²
3 units
2 bd · 2.5 ba · 1,318 ft²
3 units
2 bd · 2 ba · 1,362 ft²
3 units
3 bd · 2 ba · 1,578 ft²
3 units
2 bd · 2.5 ba · 1,578 ft²
3 units
2 bd · 2.5 ba · 1,634 ft²
3 units
One-off layouts
29 units

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$315K–$548K
5 units
$570K–$699K
6 units
$841K–$1.1M
15 units
$1.1M–$1.3M
34 units
$1.4M–$1.6M
28 units
$1.6M–$1.8M
5 units
$1.9M–$2M
2 units
$2.2M–$2.3M
3 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.63%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.30%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.13.8 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.61%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.25%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$1,199,897
Median tax billThe middle annual property tax bill among the building's units.$5,403
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit A55Dec 19, 2025$1,295,000Unit A22Dec 10, 2025$1,425,000Unit A34Nov 24, 2025$1,300,000BuildingSep 10, 2025$650,000Unit B62Sep 5, 2025$1,358,000Unit B15Jul 1, 2025$1,072,500Unit A61May 2, 2025$2,100,000Unit A15Feb 25, 2025$1,251,000Unit A26Dec 3, 2024$725,000Unit B22Oct 22, 2024$825,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,942 (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.$480,760 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$309,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$171,360
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$480,760
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$336,532

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
42
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
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.
93
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.36 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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyWESTERN CONNECTICUT
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1950
Lot (acres)The size of the land the home sits on, from county records.0.16
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.Hot Water
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(12)

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
New Lebanon SchoolA-
Elementary · Grades PK–5 · 0.2 mi
M
Western Middle SchoolA
Middle · Grades 6–8 · 0.8 mi
H
Greenwich High SchoolA+
High · Grades 9–12 · 3.5 mi

District: Greenwich School District

Neighborhood · ZIP 06830These 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.110
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.119
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.104

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.6%
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.27,704
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,501 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$168,325
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$273,728
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

20 Church St W
4 bd · 3.5 ba · 2,620 ft²
20 Church St # A1
1 bd · 1.5 ba · 794 ft²
$634K
20 Church St # B1
1 bd · 1 ba · 794 ft²
$699K
20 Church St # A2
1 bd · 1 ba · 648 ft²
$617K
20 Church St # B2
1 bd · 1 ba · 648 ft²
$540K
20 Church St # A3
2 bd · 1.5 ba · 1,323 ft²
$1.2M
20 Church St # B3
2 bd · 2.5 ba · 1,400 ft²
$1.1M
20 Church St # A4
2 bd · 3 ba · 1,653 ft²
$1.6M
20 Church St # B4
2 bd · 1 ba · 1,087 ft²
$1M
20 Church St # B5
1 bd · 1 ba · 662 ft²
$570K
20 Church St # B6
1 bd · 1 ba · 380 ft²
$315K
20 Church St # A10
3 bd · 2 ba · 1,634 ft²
$1.6M
20 Church St # B10
3 bd · 2 ba · 1,634 ft²
$1.5M
20 Church St # A11
2 bd · 1 ba · 1,362 ft²
$1.3M
20 Church St # B11
2 bd · 2 ba · 1,362 ft²
$1.6M
20 Church St # A12
2 bd · 2 ba · 1,318 ft²
$1.1M
20 Church St # B12
2 bd · 2 ba · 1,318 ft²
$1.2M
20 Church St # A13
2 bd · 1.5 ba · 1,248 ft²
$1.1M
20 Church St # B13
2 bd · 2.5 ba · 1,248 ft²
$1.3M
20 Church St # A14
3 bd · 2 ba · 1,578 ft²
$1.4M
20 Church St # B14
3 bd · 2.5 ba · 1,578 ft²
$1.4M
20 Church St # A15
2 bd · 2.5 ba · 1,284 ft²
$1.5M
20 Church St # B15
2 bd · 2 ba · 1,284 ft²
$1.2M
20 Church St # A16
1 bd · 1 ba · 1,038 ft²
$1M
20 Church St # B16
1 bd · 1.5 ba · 1,038 ft²
$892K
20 Church St # A17
1 bd · 1 ba · 493 ft²
$436K
20 Church St # B17
1 bd · 1 ba · 493 ft²
$687K
20 Church St # A20
2 bd · 2.5 ba · 1,634 ft²
$1.4M
20 Church St # B20
3 bd · 2 ba · 1,634 ft²
$1.5M
20 Church St # A21
2 bd · 1.5 ba · 1,362 ft²
$1.3M
20 Church St # B21
2 bd · 2 ba · 1,362 ft²
$1.5M
20 Church St # A22
2 bd · 2.5 ba · 1,318 ft²
$1.5M
20 Church St # B22
2 bd · 2 ba · 1,318 ft²
$972K
20 Church St # A23
1 bd · 1.5 ba · 1,248 ft²
$1.1M
20 Church St # B23
2 bd · 2 ba · 1,248 ft²
$1.5M
20 Church St # A24
2 bd · 2.5 ba · 1,578 ft²
$1.4M
20 Church St # B24
3 bd · 2.5 ba · 1,578 ft²
$1.5M
20 Church St # A25
2 bd · 2.5 ba · 1,284 ft²
$1.2M
20 Church St # B25
2 bd · 2 ba · 1,284 ft²
$1.2M
20 Church St # A26
1 bd · 1.5 ba · 1,038 ft²
$841K
20 Church St # B26
1 bd · 1 ba · 1,038 ft²
$884K
20 Church St # A27
1 bd · 1 ba · 493 ft²
$641K
20 Church St # B27
1 bd · 1 ba · 493 ft²
$504K
20 Church St # A30
2 bd · 2.5 ba · 1,634 ft²
$1.4M
20 Church St # B30
2 bd · 2.5 ba · 1,432 ft²
$1.5M
20 Church St # A31
2 bd · 2 ba · 1,362 ft²
$1.3M
20 Church St # B31
3 bd · 2.5 ba · 2,060 ft²
$1.7M
20 Church St # A32
2 bd · 2 ba · 1,318 ft²
$1.2M
20 Church St # B32
2 bd · 2.5 ba · 1,318 ft²
$1.2M
20 Church St # A33
2 bd · 2 ba · 1,248 ft²
$1.2M
20 Church St # B33
2 bd · 2 ba · 1,248 ft²
$1.1M
20 Church St # A34
2 bd · 2.5 ba · 1,578 ft²
$1.4M
20 Church St # B34
3 bd · 2 ba · 1,578 ft²
$1.8M
20 Church St # A35
2 bd · 2 ba · 1,284 ft²
$1.2M
20 Church St # B35
2 bd · 2 ba · 1,284 ft²
$1.2M
20 Church St # A36
1 bd · 1 ba · 1,038 ft²
$945K
20 Church St # B36
1 bd · 1 ba · 1,038 ft²
$959K
20 Church St # A37
1 bd · 1 ba · 493 ft²
$548K
20 Church St # A40
3 bd · 2.5 ba · 1,634 ft²
$1.6M
20 Church St # B40
2 bd · 1.5 ba · 1,432 ft²
$1.2M
20 Church St # A41
3 bd · 2.5 ba · 1,858 ft²
$1.5M
20 Church St # B41
3 bd · 3 ba · 2,060 ft²
$2.2M
20 Church St # A42
3 bd · 2 ba · 1,318 ft²
$1.2M
20 Church St # B42
2 bd · 2 ba · 1,318 ft²
$1.2M
20 Church St # A43
2 bd · 2.5 ba · 1,248 ft²
$1.1M
20 Church St # B43
2 bd · 2 ba · 1,248 ft²
$1.2M
20 Church St # A44
3 bd · 2 ba · 1,578 ft²
$1.5M
20 Church St # B44
3 bd · 2.5 ba · 1,578 ft²
$1.4M
20 Church St # A45
3 bd · 2.5 ba · 1,284 ft²
$1.3M
20 Church St # B45
2 bd · 2 ba · 1,284 ft²
$1.3M
20 Church St # A46
1 bd · 1 ba · 1,038 ft²
$854K
20 Church St # B46
1 bd · 1 ba · 1,038 ft²
$956K
20 Church St # A50
3 bd · 2 ba · 1,634 ft²
$1.6M
20 Church St # B50
3 bd · 2 ba · 1,634 ft²
$1.6M
20 Church St # A51
3 bd · 3 ba · 1,858 ft²
$2.2M
20 Church St # B51
3 bd · 3 ba · 1,858 ft²
$1.8M
20 Church St # A52
2 bd · 2 ba · 1,318 ft²
$1.9M
20 Church St # B52
2 bd · 2.5 ba · 1,318 ft²
$1.3M
20 Church St # A53
2 bd · 2 ba · 1,248 ft²
$1.1M
20 Church St # B53
2 bd · 2 ba · 1,248 ft²
$1.2M
20 Church St # A54
3 bd · 2.5 ba · 1,578 ft²
$1.5M
20 Church St # B54
3 bd · 2.5 ba · 1,578 ft²
$1.4M
20 Church St # A55
2 bd · 2 ba · 1,284 ft²
$1.4M
20 Church St # B55
2 bd · 2.5 ba · 1,284 ft²
$1.2M
20 Church St # A56
1 bd · 1 ba · 1,038 ft²
$1M
20 Church St # B56
1 bd · 1 ba · 1,038 ft²
$914K
20 Church St # A60
3 bd · 2 ba · 1,634 ft²
$1.5M
20 Church St # B60
2 bd · 2.5 ba · 1,634 ft²
$1.5M
20 Church St # A61
3 bd · 3 ba · 1,858 ft²
$2.3M
20 Church St # B61
3 bd · 3 ba · 1,858 ft²
$2M
20 Church St # A62
2 bd · 1.5 ba · 1,318 ft²
$1.2M
20 Church St # B62
2 bd · 1.5 ba · 1,318 ft²
$1.5M
20 Church St # A63
2 bd · 2 ba · 1,248 ft²
$1.2M
20 Church St # B63
2 bd · 2 ba · 1,248 ft²
$1.2M
20 Church St # A64
2 bd · 2.5 ba · 1,578 ft²
$1.5M
20 Church St # B64
3 bd · 2.5 ba · 1,578 ft²
20 Church St # A65
2 bd · 1.5 ba · 1,284 ft²
$1.2M
20 Church St # B65
2 bd · 2 ba · 1,284 ft²
$1.2M
20 Church St # A66
1 bd · 1 ba · 1,038 ft²
$957K
20 Church St # B66
1 bd · 1 ba · 1,038 ft²
$879K

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 20 Church St

How many units are in 20 Church St, Greenwich, CT?

20 Church St, Greenwich, CT has 99 residential units across built in 1940, according to county assessor records.

What is a unit at 20 Church St, Greenwich, CT worth?

The median TopHap Estimate across the 99 units at 20 Church St, Greenwich, CT is $1,218,623. That works out to $923 per square foot. Units run from 380 to 2,060 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 20 Church St, Greenwich, CT expensive for Greenwich?

Units at 20 Church St, Greenwich, CT carry a median of $923 per square foot, 17% above the Greenwich median of $791 per square foot.

How often do units sell at 20 Church St, Greenwich, CT?

3 units at 20 Church St, Greenwich, CT sold in the last 12 months, out of 283 recorded arms-length sales all time. That is a turnover rate of 3.0% of the building per year. The median sale over that period was $1.3M.

Have units at 20 Church St, Greenwich, CT appreciated?

Across 179 repeat sales of the same unit, 20 Church St, Greenwich, CT returned a median 4.8% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 6.4 years.

What floor plans does 20 Church St, Greenwich, CT have?

The most common plan at 20 Church St, Greenwich, CT is a 1-bedroom of 1,038 square feet, repeated 10 times, with a median estimate of $950,362. TopHap identifies 14 recurring plans in the building.

More homes on Church St W

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More homes in Greenwich 06830

Assigned schools

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