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CondominiumResidential
$1,030,395$652 / 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 Aug 30, 2026
Last sold for $739,900 on Dec 2, 2020

1 RIVER RUN UNIT 3

WILLIAMSTOWN, MA 01267
Building report
3
Beds
2
Baths
1,580 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.
2019
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1M
$945K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$739,900 · Dec 2, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,866 (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.$787,400 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$787,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$782,000

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.22
99
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
10
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.154 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyBerkshire
HeatingThe type of heating system in the home.Forced Air
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

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

E
Williamstown Elementary SchoolB
Elementary · Grades PK–6 · 0.7 mi
M
Mount Greylock Regional High SchoolB+
Middle · Grades 7–12 · 3.2 mi

District: Mount Greylock School District

Neighborhood · ZIP 01267These 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.58
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.54

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.80%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.8,406
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.139 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$101,851
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,416
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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

1 River Run Unit 3 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 93% of homes in Berkshire County
  • Among the highest price per square foot in Williamstown 01267
  • Among the newest homes in Williamstown 01267

What homes are worth in Williamstown 01267

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

This home
$200K$2.1M

This home is worth more than 89% of homes in Williamstown 01267.

How it measures up in Williamstown 01267

The dot is this home. The mark in the middle is the typical home in Williamstown 01267.

Estimated value$1,030,395
CheaperTypical $506,130Pricier

Pricier than 89% of homes nearby

Price per ft²$652
CheaperTypical $292Pricier

Pricier than almost all homes nearby

Living area1,580 ft²
SmallerTypical 1,820 ft²Bigger

Bigger than 40% of homes nearby

Year built2019
OlderTypical 1955Newer

Newer than almost all homes nearby

How 1 River Run Unit 3 ranks against every home in each area.
MeasureThis homeWilliamstown 01267Berkshire County
Estimated valuepricier than$1,030,39589% of homes93% of homes
Price per ft²pricier than$652almost all homes98% of homes
Living areabigger than1,580 ft²40% of homes47% of homes
Year builtnewer than2019almost all homesalmost all homes

About 1 River Run Unit 3

How much is 1 River Run Unit 3, Williamstown, MA worth?

The TopHap Estimate for 1 River Run Unit 3, Williamstown, MA is $1,030,395 as of Aug 30, 2026. The likely range is $944,686 to $1,116,104. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1 River Run Unit 3, Williamstown, MA last sell?

1 River Run Unit 3, Williamstown, MA last sold on Dec 2, 2020 for $739,900, according to the county's recorded deed.

How big is 1 River Run Unit 3, Williamstown, MA?

1 River Run Unit 3, Williamstown, MA has 3 bedrooms, 2 bathrooms and 1,580 square feet of living space.

When was 1 River Run Unit 3, Williamstown, MA built?

1 River Run Unit 3, Williamstown, MA was built in 2019, making it 7 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 1 River Run Unit 3, Williamstown, MA?

1 River Run Unit 3, Williamstown, MA is assigned to Williamstown Elementary School (elementary), rated B; Mount Greylock Regional High School (middle), rated B+. All sit in Mount Greylock School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1 River Run Unit 3, Williamstown, MA compare to other homes in Williamstown 01267?

Among the 2,486 homes in Williamstown 01267, it is worth more than 89% of them ($1,030,395 against a typical $506,130), its price per square foot is higher than almost all of them ($652 against a typical $292), it is bigger than 40% of them (1,580 ft² against a typical 1,820 ft²) and it is newer than almost all of them (2019 against a typical 1955). Measured against all of Berkshire County, it is worth more than 93% 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 1 River Run Unit 3, Williamstown, MA?

The 2025 property tax bill for 1 River Run Unit 3, Williamstown, MA was $10,866. The county assessed it at $787,400.

More homes on River Run Unit 3

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Assigned schools

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