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Single Family ResidenceResidential
$863,862$317 / 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 94How 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

21 BLACKSTONE AVE

WARWICK, RI 02889
3
Beds
2.5
Baths
2,727 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.
0.4 ac
Lot SizeThe size of the land the home sits on, from county records.
1905
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$864K
$812K low$915K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,301 (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.$653,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$133,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$520,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$541,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$771,970

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
CountyKENT
Lot (acres)The size of the land the home sits on, from county records.0.40
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
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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(1)

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
Warwick Neck Elementary SchoolC+
Elementary · Grades KG–6 · 0.7 mi
M
Warwick Veterans Memorial Middle SchoolC-
Middle · Grades 7–8 · 2.3 mi
H
Pilgrim High SchoolB
High · Grades 9–12 · 4.9 mi

District: Warwick School District

Neighborhood · ZIP 02889These 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.88
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.60

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
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.27,921
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,690 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,508
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,725
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%

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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

21 Blackstone Ave 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 97% of homes in Warwick 02889
  • Costs less per square foot than 67% of homes in Warwick 02889
  • Bigger than 97% of homes in Warwick 02889
  • Has a bigger lot than 89% of homes in Warwick 02889
  • Older than 94% of homes in Warwick 02889

What homes are worth in Warwick 02889

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

This home
$248K$981K

This home is worth more than 97% of homes in Warwick 02889.

How it measures up in Warwick 02889

The dot is this home. The mark in the middle is the typical home in Warwick 02889.

Estimated value$863,862
CheaperTypical $410,029Pricier

Pricier than 97% of homes nearby

Price per ft²$317
CheaperTypical $349Pricier

Pricier than 33% of homes nearby

Living area2,727 ft²
SmallerTypical 1,155 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.4 ac
SmallerTypical 0.19 acBigger

Bigger than 89% of homes nearby

Year built1905
OlderTypical 1955Newer

Newer than 6% of homes nearby

How 21 Blackstone Ave ranks against every home in each area.
MeasureThis homeWarwick 02889Kent County
Estimated valuepricier than$863,86297% of homes94% of homes
Price per ft²pricier than$31733% of homes40% of homes
Living areabigger than2,727 ft²97% of homes92% of homes
Lot sizebigger than0.4 ac89% of homes69% of homes
Year builtnewer than19056% of homes7% of homes

About 21 Blackstone Ave

How much is 21 Blackstone Ave, Warwick, RI worth?

The TopHap Estimate for 21 Blackstone Ave, Warwick, RI is $863,862 as of Sep 24, 2026. The likely range is $812,369 to $915,355. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Blackstone Ave, Warwick, RI last sell?

21 Blackstone Ave, Warwick, RI last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Blackstone Ave, Warwick, RI?

21 Blackstone Ave, Warwick, RI has 3 bedrooms, 2.5 bathrooms, 2,727 square feet of living space and a 0.40-acre lot.

When was 21 Blackstone Ave, Warwick, RI built?

21 Blackstone Ave, Warwick, RI was built in 1905, making it 121 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Blackstone Ave, Warwick, RI?

21 Blackstone Ave, Warwick, RI is assigned to Warwick Neck Elementary School (elementary), rated C+; Warwick Veterans Memorial Middle School (middle), rated C-; Pilgrim High School (high), rated B. All sit in Warwick School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Blackstone Ave, Warwick, RI compare to other homes in Warwick 02889?

Among the 10,658 homes in Warwick 02889, it is worth more than 97% of them ($863,862 against a typical $410,029), its price per square foot is higher than 33% of them ($317 against a typical $349), it is bigger than 97% of them (2,727 ft² against a typical 1,155 ft²), its lot is bigger than 89% of them (0.4 ac against a typical 0.19 ac) and it is newer than 6% of them (1905 against a typical 1955). Measured against all of Kent County, it is worth more than 94% 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 21 Blackstone Ave, Warwick, RI?

The 2025 property tax bill for 21 Blackstone Ave, Warwick, RI was $8,301. The county assessed it at $653,600.

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