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Rural ResidenceResidential
$145,845$116 / 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 86How 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

4520 STATE ROUTE 21

ANDOVER, NY 14806
2
Beds
1.5
Baths
1,260 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.
22.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$146K
$126K low$166K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,089 (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.$76,380 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$19,855
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$56,525
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$76,380
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$129,458

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.46
79
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.
58
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
82
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
4
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.68 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
StyleThe architectural style of the home, such as ranch or colonial.Contemporary
CountyALLEGANY
Lot (acres)The size of the land the home sits on, from county records.22.20
HeatingThe type of heating system in the home.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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 330 ft²Porch · 402 ft²

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
Andover SchoolC-
Elementary · Grades PK–12 · 2.4 mi

District: Andover Central School District

Neighborhood · ZIP 14806These 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.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.37

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.82%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.26%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.2,531
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.$57,092
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$77,327
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.48%

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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

4520 State Route 21 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 69% of homes in Andover 14806
  • Costs more per square foot than 80% of homes in Andover 14806
  • Smaller than 68% of homes in Andover 14806
  • Has a bigger lot than 83% of homes in Allegany County

What homes are worth in Andover 14806

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

This home
$32K$391K

This home is worth more than 69% of homes in Andover 14806.

How it measures up in Andover 14806

The dot is this home. The mark in the middle is the typical home in Andover 14806.

Estimated value$145,845
CheaperTypical $102,665Pricier

Pricier than 69% of homes nearby

Price per ft²$116
CheaperTypical $61Pricier

Pricier than 80% of homes nearby

Living area1,260 ft²
SmallerTypical 1,570 ft²Bigger

Bigger than 32% of homes nearby

Lot size22.2 ac
SmallerTypical 2.9 acBigger

Bigger than 72% of homes nearby

Year built1973
OlderTypical 1957Newer

Newer than 62% of homes nearby

How 4520 State Route 21 ranks against every home in each area.
MeasureThis homeAndover 14806Allegany County
Estimated valuepricier than$145,84569% of homes65% of homes
Price per ft²pricier than$11680% of homes78% of homes
Living areabigger than1,260 ft²32% of homes40% of homes
Lot sizebigger than22.2 ac72% of homes83% of homes
Year builtnewer than197362% of homes63% of homes

About 4520 State Route 21

How much is 4520 State Route 21, Andover, NY worth?

The TopHap Estimate for 4520 State Route 21, Andover, NY is $145,845 as of Sep 24, 2026. The likely range is $125,998 to $165,692. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4520 State Route 21, Andover, NY last sell?

4520 State Route 21, Andover, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4520 State Route 21, Andover, NY?

4520 State Route 21, Andover, NY has 2 bedrooms, 1.5 bathrooms, 1,260 square feet of living space and a 22.20-acre lot.

When was 4520 State Route 21, Andover, NY built?

4520 State Route 21, Andover, NY was built in 1973, making it 53 years old. It is a contemporary home. The building has 1 story.

What schools serve 4520 State Route 21, Andover, NY?

4520 State Route 21, Andover, NY is assigned to Andover School (elementary), rated C-. All sit in Andover Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4520 State Route 21, Andover, NY compare to other homes in Andover 14806?

Among the 1,089 homes in Andover 14806, it is worth more than 69% of them ($145,845 against a typical $102,665), its price per square foot is higher than 80% of them ($116 against a typical $61), it is bigger than 32% of them (1,260 ft² against a typical 1,570 ft²), its lot is bigger than 72% of them (22.2 ac against a typical 2.9 ac) and it is newer than 62% of them (1973 against a typical 1957). Measured against all of Allegany County, it is worth more than 65% 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 4520 State Route 21, Andover, NY?

The 2026 property tax bill for 4520 State Route 21, Andover, NY was $4,089. The county assessed it at $76,380.

More homes on State Route 21

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More homes in Andover 14806

Assigned schools

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