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Single Family ResidenceResidential
$608,331$183 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $851,000 on Mar 31, 2022

21 WEST ST

AMHERST, NH 03031
5
Beds
2.5
Baths
3,328 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$608K
$584K low$632K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$851,000 · Mar 31, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,223 (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.$384,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$113,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$271,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$982,300

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.55
87
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
27
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
55
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
85
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
25
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.105 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Rustic
CountyHILLSBOROUGH
Lot (acres)The size of the land the home sits on, from county records.0.18
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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, Basement
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.Deck

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

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

E
Clark-Wilkins SchoolA-
Elementary · Grades PK–4 · 2.6 mi
H
Souhegan Coop High SchoolA
High · Grades 9–12 · 4.0 mi
M
Amherst Middle SchoolB
Middle · Grades 5–8 · 4.2 mi

District: Souhegan Cooperative School District

Neighborhood · ZIP 03031These 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.56
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.85

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.12,242
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.353 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$152,510
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$186,046
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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 West 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 69% of homes in Hillsborough County
  • Among the lowest price per square foot in Amherst 03031
  • Bigger than 92% of homes in Hillsborough County
  • Has a smaller lot than 97% of homes in Amherst 03031
  • Older than 75% of homes in Amherst 03031

What homes are worth in Amherst 03031

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

This home
$354K$1.3M

This home is worth more than 32% of homes in Amherst 03031.

How it measures up in Amherst 03031

The dot is this home. The mark in the middle is the typical home in Amherst 03031.

Estimated value$608,331
CheaperTypical $679,429Pricier

Pricier than 32% of homes nearby

Price per ft²$183
CheaperTypical $316Pricier

Cheaper than almost all homes nearby

Living area3,328 ft²
SmallerTypical 2,178 ft²Bigger

Bigger than 89% of homes nearby

Lot size0.18 ac
SmallerTypical 1.5 acBigger

Bigger than 3% of homes nearby

Year built1968
OlderTypical 1979Newer

Newer than 25% of homes nearby

How 21 West St ranks against every home in each area.
MeasureThis homeAmherst 03031Hillsborough County
Estimated valuepricier than$608,33132% of homes69% of homes
Price per ft²pricier than$183almost no homes3% of homes
Living areabigger than3,328 ft²89% of homes92% of homes
Lot sizebigger than0.18 ac3% of homes17% of homes
Year builtnewer than196825% of homes35% of homes

About 21 West St

How much is 21 West St, Amherst, NH worth?

The TopHap Estimate for 21 West St, Amherst, NH is $608,331 as of Aug 30, 2026. The likely range is $584,383 to $632,279. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 West St, Amherst, NH last sell?

21 West St, Amherst, NH last sold on Mar 31, 2022 for $851,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 West St, Amherst, NH?

21 West St, Amherst, NH has 5 bedrooms, 2.5 bathrooms, 3,328 square feet of living space and a 0.18-acre lot.

When was 21 West St, Amherst, NH built?

21 West St, Amherst, NH was built in 1968, making it 58 years old. It is a rustic home. The building has 1 story.

What schools serve 21 West St, Amherst, NH?

21 West St, Amherst, NH is assigned to Clark-Wilkins School (elementary), rated A-; Souhegan Coop High School (high), rated A; Amherst Middle School (middle), rated B. All sit in Souhegan Cooperative School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 West St, Amherst, NH compare to other homes in Amherst 03031?

Among the 4,438 homes in Amherst 03031, it is worth more than 32% of them ($608,331 against a typical $679,429), its price per square foot is higher than almost none of them ($183 against a typical $316), it is bigger than 89% of them (3,328 ft² against a typical 2,178 ft²), its lot is bigger than 3% of them (0.18 ac against a typical 1.5 ac) and it is newer than 25% of them (1968 against a typical 1979). Measured against all of Hillsborough County, it is worth more than 69% 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 West St, Amherst, NH?

The 2025 property tax bill for 21 West St, Amherst, NH was $9,223. The county assessed it at $384,600.

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