Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$631,326$308 / 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 92How 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 $151,000 on Aug 30, 1991

20 COSMO ST

WESTERLY, RI 02891
4
Beds
2
Baths
2,048 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.
0.47 ac
Lot SizeThe size of the land the home sits on, from county records.
1989
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$631K
$579K low$683K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$151,000 · Aug 30, 1991

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,731 (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.$524,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$186,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$338,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$430,900

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.25
89
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
9
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
29
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.43 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Cape Cod
CountyWASHINGTON
Lot (acres)The size of the land the home sits on, from county records.0.47
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
Dunn's Corners Elementary SchoolA-
Elementary · Grades KG–4 · 0.8 mi
M
Westerly Middle SchoolB-
Middle · Grades 5–8 · 1.1 mi
H
Westerly High SchoolB+
High · Grades 9–12 · 3.0 mi

District: Westerly School District

Neighborhood · ZIP 02891These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.54

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.78%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.21,875
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.710 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,075
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$116,216
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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

20 Cosmo 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.

  • Costs less per square foot than 88% of homes in Washington County
  • Bigger than 70% of homes in Washington County
  • Newer than 71% of homes in Westerly 02891

What homes are worth in Westerly 02891

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

This home
$268K$2.8M

This home is worth more than 60% of homes in Westerly 02891.

How it measures up in Westerly 02891

The dot is this home. The mark in the middle is the typical home in Westerly 02891.

Estimated value$631,326
CheaperTypical $567,137Pricier

Pricier than 60% of homes nearby

Price per ft²$308
CheaperTypical $360Pricier

Pricier than 24% of homes nearby

Living area2,048 ft²
SmallerTypical 1,668 ft²Bigger

Bigger than 67% of homes nearby

Lot size0.47 ac
SmallerTypical 0.4 acBigger

Bigger than 60% of homes nearby

Year built1989
OlderTypical 1975Newer

Newer than 71% of homes nearby

How 20 Cosmo St ranks against every home in each area.
MeasureThis homeWesterly 02891Washington County
Estimated valuepricier than$631,32660% of homes43% of homes
Price per ft²pricier than$30824% of homes12% of homes
Living areabigger than2,048 ft²67% of homes70% of homes
Lot sizebigger than0.47 ac60% of homes47% of homes
Year builtnewer than198971% of homes68% of homes

About 20 Cosmo St

How much is 20 Cosmo St, Westerly, RI worth?

The TopHap Estimate for 20 Cosmo St, Westerly, RI is $631,326 as of Sep 24, 2026. The likely range is $579,188 to $683,464. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Cosmo St, Westerly, RI last sell?

20 Cosmo St, Westerly, RI last sold on Aug 30, 1991 for $151,000, according to the county's recorded deed.

How big is 20 Cosmo St, Westerly, RI?

20 Cosmo St, Westerly, RI has 4 bedrooms, 2 bathrooms, 2,048 square feet of living space and a 0.47-acre lot.

When was 20 Cosmo St, Westerly, RI built?

20 Cosmo St, Westerly, RI was built in 1989, making it 37 years old. It is a cape cod home. The building has 2 stories.

What schools serve 20 Cosmo St, Westerly, RI?

20 Cosmo St, Westerly, RI is assigned to Dunn's Corners Elementary School (elementary), rated A-; Westerly Middle School (middle), rated B-; Westerly High School (high), rated B+. All sit in Westerly School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Cosmo St, Westerly, RI compare to other homes in Westerly 02891?

Among the 10,296 homes in Westerly 02891, it is worth more than 60% of them ($631,326 against a typical $567,137), its price per square foot is higher than 24% of them ($308 against a typical $360), it is bigger than 67% of them (2,048 ft² against a typical 1,668 ft²), its lot is bigger than 60% of them (0.47 ac against a typical 0.4 ac) and it is newer than 71% of them (1989 against a typical 1975). Measured against all of Washington County, it is worth more than 43% 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 20 Cosmo St, Westerly, RI?

The 2025 property tax bill for 20 Cosmo St, Westerly, RI was $3,731. The county assessed it at $524,800.

More homes on Cosmo St

Closest homes

More homes in Westerly 02891

Assigned schools

Explore the area

See this home in context

Open 20 Cosmo St 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