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Single Family ResidenceResidential
$2,109,940$798 / 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 92How 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 $1,997,000 on Nov 12, 2025

20 PROSPECT ST

GREAT BARRINGTON, MA 01230
4
Beds
3.5
Baths
2,644 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.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1926
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

$2.1M
$1.9M low$2.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,997,000 · Nov 12, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,450 (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.$1,318,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$181,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,106,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,243,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,622,013

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.Conventional
CountyBERKSHIRE
Lot (acres)The size of the land the home sits on, from county records.0.35
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
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(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.

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

M
Monument Valley Regional Middle SchoolC+
Middle · Grades 5–8 · 3.9 mi
E
Muddy Brook Regional Elementary SchoolB-
Elementary · Grades PK–4 · 4.0 mi
H
Monument Mountain Regional High SchoolB-
High · Grades 9–12 · 4.2 mi

District: Berkshire Hills School District

Neighborhood · ZIP 01230These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.58

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.79%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.9%
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.8,376
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.84 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$79,357
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$113,887
Average tempThe average temperature here across a full year.45°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.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 Prospect 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.

  • Among the most valuable homes in Berkshire County
  • Among the highest price per square foot in Berkshire County
  • Bigger than 84% of homes in Berkshire County
  • Has a smaller lot than 77% of homes in Great Barrington 01230
  • Older than 69% of homes in Berkshire County

What homes are worth in Great Barrington 01230

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

This home
$271K$2.5M

This home is worth more than 97% of homes in Great Barrington 01230.

How it measures up in Great Barrington 01230

The dot is this home. The mark in the middle is the typical home in Great Barrington 01230.

Estimated value$2,109,940
CheaperTypical $657,218Pricier

Pricier than 97% of homes nearby

Price per ft²$798
CheaperTypical $375Pricier

Pricier than 98% of homes nearby

Living area2,644 ft²
SmallerTypical 1,866 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.35 ac
SmallerTypical 1.33 acBigger

Bigger than 23% of homes nearby

Year built1926
OlderTypical 1961Newer

Newer than 32% of homes nearby

How 20 Prospect St ranks against every home in each area.
MeasureThis homeGreat Barrington 01230Berkshire County
Estimated valuepricier than$2,109,94097% of homesalmost all homes
Price per ft²pricier than$79898% of homesalmost all homes
Living areabigger than2,644 ft²78% of homes84% of homes
Lot sizebigger than0.35 ac23% of homes40% of homes
Year builtnewer than192632% of homes31% of homes

About 20 Prospect St

How much is 20 Prospect St, Great Barrington, MA worth?

The TopHap Estimate for 20 Prospect St, Great Barrington, MA is $2,109,940 as of Sep 24, 2026. The likely range is $1,936,651 to $2,283,229. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Prospect St, Great Barrington, MA last sell?

20 Prospect St, Great Barrington, MA last sold on Nov 12, 2025 for $1,997,000, according to the county's recorded deed.

How big is 20 Prospect St, Great Barrington, MA?

20 Prospect St, Great Barrington, MA has 4 bedrooms, 3.5 bathrooms, 2,644 square feet of living space and a 0.35-acre lot.

When was 20 Prospect St, Great Barrington, MA built?

20 Prospect St, Great Barrington, MA was built in 1926, making it 100 years old. It is a conventional home. The building has 2 stories.

What schools serve 20 Prospect St, Great Barrington, MA?

20 Prospect St, Great Barrington, MA is assigned to Monument Valley Regional Middle School (middle), rated C+; Muddy Brook Regional Elementary School (elementary), rated B-; Monument Mountain Regional High School (high), rated B-. All sit in Berkshire Hills School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Prospect St, Great Barrington, MA compare to other homes in Great Barrington 01230?

Among the 4,686 homes in Great Barrington 01230, it is worth more than 97% of them ($2,109,940 against a typical $657,218), its price per square foot is higher than 98% of them ($798 against a typical $375), it is bigger than 78% of them (2,644 ft² against a typical 1,866 ft²), its lot is bigger than 23% of them (0.35 ac against a typical 1.33 ac) and it is newer than 32% of them (1926 against a typical 1961). Measured against all of Berkshire County, it is worth more than almost all 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 Prospect St, Great Barrington, MA?

The 2026 property tax bill for 20 Prospect St, Great Barrington, MA was $17,450. The county assessed it at $1,318,000.

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