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Single Family ResidenceResidential
$600,289$394 / 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 Aug 30, 2026
Last sold for $450,000 on Jun 19, 2018

20 ALTON ST

WALPOLE, MA 02081
3
Beds
1.5
Baths
1,524 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$600K
$514K low$686K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$450,000 · Jun 19, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,484 (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.$583,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$339,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$243,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$682,195

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
CountyNORFOLK
Lot (acres)The size of the land the home sits on, from county records.0.46
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
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
Old Post RoadA-
Elementary · Grades KG–5 · 0.5 mi
H
Walpole High SchoolA-
High · Grades 9–12 · 1.1 mi

District: Walpole School District

Neighborhood · ZIP 02081These 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.27
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.64

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
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.20,697
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,190 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$154,284
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$180,354
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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

20 Alton 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 less than 78% of homes in Walpole 02081
  • Costs less per square foot than 67% of homes in Norfolk County
  • Has a smaller lot than 65% of homes in Walpole 02081
  • Older than 79% of homes in Walpole 02081

What homes are worth in Walpole 02081

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

This home
$404K$1.8M

This home is worth more than 22% of homes in Walpole 02081.

How it measures up in Walpole 02081

The dot is this home. The mark in the middle is the typical home in Walpole 02081.

Estimated value$600,289
CheaperTypical $741,623Pricier

Pricier than 22% of homes nearby

Price per ft²$394
CheaperTypical $415Pricier

Pricier than 36% of homes nearby

Living area1,524 ft²
SmallerTypical 1,797 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.46 ac
SmallerTypical 0.6 acBigger

Bigger than 35% of homes nearby

Year built1950
OlderTypical 1974Newer

Newer than 21% of homes nearby

How 20 Alton St ranks against every home in each area.
MeasureThis homeWalpole 02081Norfolk County
Estimated valuepricier than$600,28922% of homes30% of homes
Price per ft²pricier than$39436% of homes33% of homes
Living areabigger than1,524 ft²37% of homes42% of homes
Lot sizebigger than0.46 ac35% of homes59% of homes
Year builtnewer than195021% of homes38% of homes

About 20 Alton St

How much is 20 Alton St, Walpole, MA worth?

The TopHap Estimate for 20 Alton St, Walpole, MA is $600,289 as of Aug 30, 2026. The likely range is $514,446 to $686,132. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Alton St, Walpole, MA last sell?

20 Alton St, Walpole, MA last sold on Jun 19, 2018 for $450,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 Alton St, Walpole, MA?

20 Alton St, Walpole, MA has 3 bedrooms, 1.5 bathrooms, 1,524 square feet of living space and a 0.46-acre lot.

When was 20 Alton St, Walpole, MA built?

20 Alton St, Walpole, MA was built in 1950, making it 76 years old. It is a cape cod home. The building has 2 stories.

What schools serve 20 Alton St, Walpole, MA?

20 Alton St, Walpole, MA is assigned to Old Post Road (elementary), rated A-; Walpole High School (high), rated A-. All sit in Walpole School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Alton St, Walpole, MA compare to other homes in Walpole 02081?

Among the 6,504 homes in Walpole 02081, it is worth more than 22% of them ($600,289 against a typical $741,623), its price per square foot is higher than 36% of them ($394 against a typical $415), it is bigger than 37% of them (1,524 ft² against a typical 1,797 ft²), its lot is bigger than 35% of them (0.46 ac against a typical 0.6 ac) and it is newer than 21% of them (1950 against a typical 1974). Measured against all of Norfolk County, it is worth more than 30% 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 Alton St, Walpole, MA?

The 2025 property tax bill for 20 Alton St, Walpole, MA was $7,484. The county assessed it at $583,300.

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