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Single Family ResidenceResidential
$274,797$134 / 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 81How 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 HARPER ST

STAMFORD, NY 12167
5
Beds
3
Baths
2,052 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.
0.42 ac
Lot SizeThe size of the land the home sits on, from county records.
1880
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$275K
$224K low$326K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,404 (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.$45,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$42,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$45,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$285,625

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.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
10
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
52
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
90
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
36
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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.Traditional/Old
CountyDELAWARE
Lot (acres)The size of the land the home sits on, from county records.0.42
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 189 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Stamford Central SchoolC+
Elementary · Grades PK–12 · 0.2 mi

District: Stamford Central School District

Neighborhood · ZIP 12167These 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.147
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.49

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.67%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
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.1,657
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.37 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,163
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,749
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.42 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.49%

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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 Harper 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 more than 68% of homes in Stamford 12167
  • Costs less per square foot than 67% of homes in Delaware County
  • Bigger than 80% of homes in Delaware County
  • Has a smaller lot than 86% of homes in Stamford 12167
  • Older than 92% of homes in Delaware County

What homes are worth in Stamford 12167

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

This home
$83K$626K

This home is worth more than 68% of homes in Stamford 12167.

How it measures up in Stamford 12167

The dot is this home. The mark in the middle is the typical home in Stamford 12167.

Estimated value$274,797
CheaperTypical $223,691Pricier

Pricier than 68% of homes nearby

Price per ft²$134
CheaperTypical $152Pricier

Pricier than 37% of homes nearby

Living area2,052 ft²
SmallerTypical 1,476 ft²Bigger

Bigger than 74% of homes nearby

Lot size0.42 ac
SmallerTypical 3.4 acBigger

Bigger than 14% of homes nearby

Year built1880
OlderTypical 1969Newer

Newer than 9% of homes nearby

How 21 Harper St ranks against every home in each area.
MeasureThis homeStamford 12167Delaware County
Estimated valuepricier than$274,79768% of homes58% of homes
Price per ft²pricier than$13437% of homes33% of homes
Living areabigger than2,052 ft²74% of homes80% of homes
Lot sizebigger than0.42 ac14% of homes18% of homes
Year builtnewer than18809% of homes8% of homes

About 21 Harper St

How much is 21 Harper St, Stamford, NY worth?

The TopHap Estimate for 21 Harper St, Stamford, NY is $274,797 as of Sep 24, 2026. The likely range is $223,837 to $325,757. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Harper St, Stamford, NY last sell?

21 Harper St, Stamford, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Harper St, Stamford, NY?

21 Harper St, Stamford, NY has 5 bedrooms, 3 bathrooms, 2,052 square feet of living space and a 0.42-acre lot.

When was 21 Harper St, Stamford, NY built?

21 Harper St, Stamford, NY was built in 1880, making it 146 years old. It is a traditional/old home. The building has 2 stories.

What schools serve 21 Harper St, Stamford, NY?

21 Harper St, Stamford, NY is assigned to Stamford Central School (elementary), rated C+. All sit in Stamford Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Harper St, Stamford, NY compare to other homes in Stamford 12167?

Among the 1,337 homes in Stamford 12167, it is worth more than 68% of them ($274,797 against a typical $223,691), its price per square foot is higher than 37% of them ($134 against a typical $152), it is bigger than 74% of them (2,052 ft² against a typical 1,476 ft²), its lot is bigger than 14% of them (0.42 ac against a typical 3.4 ac) and it is newer than 9% of them (1880 against a typical 1969). Measured against all of Delaware County, it is worth more than 58% 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 Harper St, Stamford, NY?

The 2025 property tax bill for 21 Harper St, Stamford, NY was $5,404. The county assessed it at $45,700.

More homes on Harper St

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Assigned schools

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