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Single Family ResidenceResidential
$1,533,513$357 / 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 91How 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

20 GREEN ST

CANTON, MA 02021
5
Beds
3.5
Baths
4,294 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.
1.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.5M
$1.4M low$1.7M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,294 (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.$1,445,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$444,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,000,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,390,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,648,725

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
CountyNORFOLK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1991
Lot (acres)The size of the land the home sits on, from county records.1.10
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
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.

M
William H. Galvin Middle SchoolB
Middle · Grades 6–8 · 1.7 mi
E
Lt. Peter M. Hansen Elementary SchoolA-
Elementary · Grades KG–5 · 1.9 mi
H
Canton High SchoolA
High · Grades 9–12 · 3.3 mi

District: Canton School District

Neighborhood · ZIP 02021These 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.101
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.69

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
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.25,067
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,278 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,421
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$168,387
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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 Green 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 95% of homes in Canton 02021
  • Costs less per square foot than 84% of homes in Canton 02021
  • Bigger than 97% of homes in Norfolk County
  • Has a bigger lot than 82% of homes in Norfolk County
  • Newer than 82% of homes in Norfolk County

What homes are worth in Canton 02021

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

This home
$298K$1.7M

This home is worth more than 95% of homes in Canton 02021.

How it measures up in Canton 02021

The dot is this home. The mark in the middle is the typical home in Canton 02021.

Estimated value$1,533,513
CheaperTypical $774,939Pricier

Pricier than 95% of homes nearby

Price per ft²$357
CheaperTypical $415Pricier

Pricier than 16% of homes nearby

Living area4,294 ft²
SmallerTypical 1,898 ft²Bigger

Bigger than 95% of homes nearby

Lot size1.1 ac
SmallerTypical 0.51 acBigger

Bigger than 76% of homes nearby

Year built1990
OlderTypical 1971Newer

Newer than 72% of homes nearby

How 20 Green St ranks against every home in each area.
MeasureThis homeCanton 02021Norfolk County
Estimated valuepricier than$1,533,51395% of homes88% of homes
Price per ft²pricier than$35716% of homes20% of homes
Living areabigger than4,294 ft²95% of homes97% of homes
Lot sizebigger than1.1 ac76% of homes82% of homes
Year builtnewer than199072% of homes82% of homes

About 20 Green St

How much is 20 Green St, Canton, MA worth?

The TopHap Estimate for 20 Green St, Canton, MA is $1,533,513 as of Aug 30, 2026. The likely range is $1,399,375 to $1,667,651. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Green St, Canton, MA last sell?

20 Green St, Canton, MA last sold on Jan 1, 1900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 Green St, Canton, MA?

20 Green St, Canton, MA has 5 bedrooms, 3.5 bathrooms, 4,294 square feet of living space and a 1.10-acre lot.

When was 20 Green St, Canton, MA built?

20 Green St, Canton, MA was built in 1990, making it 36 years old. It is a colonial home. The building has 3 stories.

What schools serve 20 Green St, Canton, MA?

20 Green St, Canton, MA is assigned to William H. Galvin Middle School (middle), rated B; Lt. Peter M. Hansen Elementary School (elementary), rated A-; Canton High School (high), rated A. All sit in Canton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Green St, Canton, MA compare to other homes in Canton 02021?

Among the 7,558 homes in Canton 02021, it is worth more than 95% of them ($1,533,513 against a typical $774,939), its price per square foot is higher than 16% of them ($357 against a typical $415), it is bigger than 95% of them (4,294 ft² against a typical 1,898 ft²), its lot is bigger than 76% of them (1.1 ac against a typical 0.51 ac) and it is newer than 72% of them (1990 against a typical 1971). Measured against all of Norfolk County, it is worth more than 88% 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 Green St, Canton, MA?

The 2025 property tax bill for 20 Green St, Canton, MA was $14,294. The county assessed it at $1,445,300.

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