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Single Family ResidenceResidential
$334,915$201 / 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 98How 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
Last sold for $310,000 on Dec 15, 2023

20 CASTLE AVE

ATHOL, MA 01331
3
Beds
1
Baths
1,664 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1947
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$335K
$328K low$342K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$310,000 · Dec 15, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,498 (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.$276,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$50,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$225,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$268,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$346,085

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.Ranch
CountyWORCESTER
Lot (acres)The size of the land the home sits on, from county records.0.20
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.Forced Air With Air Conditioning
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(8)

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.

H
Athol High SchoolD
High · Grades 9–12 · 2.3 mi
E
Athol Community Elementary SchoolD
Elementary · Grades PK–4 · 2.4 mi
M
Athol - Royalston Middle SchoolD
Middle · Grades 5–8 · 2.5 mi

District: Athol-Royalston School District

Neighborhood · ZIP 01331These 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.142
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.55

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.13,781
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.234 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$69,680
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,102
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

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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 Castle Ave 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 87% of homes in Worcester County
  • Costs less per square foot than 94% of homes in Worcester County
  • Bigger than 65% of homes in Athol 01331
  • Has a smaller lot than 83% of homes in Worcester County
  • Older than 70% of homes in Worcester County

What homes are worth in Athol 01331

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

This home
$160K$583K

This home is worth more than 58% of homes in Athol 01331.

How it measures up in Athol 01331

The dot is this home. The mark in the middle is the typical home in Athol 01331.

Estimated value$334,915
CheaperTypical $316,106Pricier

Pricier than 58% of homes nearby

Price per ft²$201
CheaperTypical $226Pricier

Pricier than 32% of homes nearby

Living area1,664 ft²
SmallerTypical 1,431 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.2 ac
SmallerTypical 0.51 acBigger

Bigger than 18% of homes nearby

Year built1947
OlderTypical 1950Newer

Newer than 47% of homes nearby

How 20 Castle Ave ranks against every home in each area.
MeasureThis homeAthol 01331Worcester County
Estimated valuepricier than$334,91558% of homes13% of homes
Price per ft²pricier than$20132% of homes6% of homes
Living areabigger than1,664 ft²65% of homes48% of homes
Lot sizebigger than0.2 ac18% of homes17% of homes
Year builtnewer than194747% of homes30% of homes

About 20 Castle Ave

How much is 20 Castle Ave, Athol, MA worth?

The TopHap Estimate for 20 Castle Ave, Athol, MA is $334,915 as of Sep 24, 2026. The likely range is $327,606 to $342,224. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Castle Ave, Athol, MA last sell?

20 Castle Ave, Athol, MA last sold on Dec 15, 2023 for $310,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 20 Castle Ave, Athol, MA?

20 Castle Ave, Athol, MA has 3 bedrooms, 1 bathrooms, 1,664 square feet of living space and a 0.20-acre lot.

When was 20 Castle Ave, Athol, MA built?

20 Castle Ave, Athol, MA was built in 1947, making it 79 years old. It is a ranch home. The building has 1 story.

What schools serve 20 Castle Ave, Athol, MA?

20 Castle Ave, Athol, MA is assigned to Athol High School (high), rated D; Athol Community Elementary School (elementary), rated D; Athol - Royalston Middle School (middle), rated D. All sit in Athol-Royalston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Castle Ave, Athol, MA compare to other homes in Athol 01331?

Among the 4,903 homes in Athol 01331, it is worth more than 58% of them ($334,915 against a typical $316,106), its price per square foot is higher than 32% of them ($201 against a typical $226), it is bigger than 65% of them (1,664 ft² against a typical 1,431 ft²), its lot is bigger than 18% of them (0.2 ac against a typical 0.51 ac) and it is newer than 47% of them (1947 against a typical 1950). Measured against all of Worcester County, it is worth more than 13% 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 Castle Ave, Athol, MA?

The 2026 property tax bill for 20 Castle Ave, Athol, MA was $3,498. The county assessed it at $276,100.

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