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Single Family ResidenceResidential
$332,845$273 / 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 94How 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

21 UNION ST

MONTAGUE, MA 01351
3
Beds
1
Baths
1,218 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1845
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

$333K
$314K low$352K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,778 (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.$248,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$84,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$163,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$248,400

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.16 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyFranklin
Lot (acres)The size of the land the home sits on, from county records.0.15
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
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(5)

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
Turners Fall High SchoolD
High · Grades 9–12 · 3.8 mi
M
Great Falls Middle SchoolC
Middle · Grades 6–8 · 3.8 mi
E
Hillcrest Elementary School
Elementary · Grades PK–1 · 4.6 mi

District: Gill-Montague School District

Neighborhood · ZIP 01351These 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.62
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
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.2,183
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.112 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,938
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,285
Average tempThe average temperature here across a full year.46°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

21 Union 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 66% of homes in Montague 01351
  • Costs more per square foot than 77% of homes in Montague 01351
  • Smaller than 78% of homes in Montague 01351
  • Has a smaller lot than 98% of homes in Montague 01351
  • Older than 95% of homes in Franklin County

What homes are worth in Montague 01351

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

This home
$178K$682K

This home is worth more than 34% of homes in Montague 01351.

How it measures up in Montague 01351

The dot is this home. The mark in the middle is the typical home in Montague 01351.

Estimated value$332,845
CheaperTypical $376,117Pricier

Pricier than 34% of homes nearby

Price per ft²$273
CheaperTypical $238Pricier

Pricier than 77% of homes nearby

Living area1,218 ft²
SmallerTypical 1,680 ft²Bigger

Bigger than 22% of homes nearby

Lot size0.15 ac
SmallerTypical 1.1 acBigger

Bigger than 2% of homes nearby

Year built1845
OlderTypical 1974Newer

Newer than 8% of homes nearby

How 21 Union St ranks against every home in each area.
MeasureThis homeMontague 01351Franklin County
Estimated valuepricier than$332,84534% of homes44% of homes
Price per ft²pricier than$27377% of homes76% of homes
Living areabigger than1,218 ft²22% of homes23% of homes
Lot sizebigger than0.15 ac2% of homes5% of homes
Year builtnewer than18458% of homes5% of homes

About 21 Union St

How much is 21 Union St, Montague, MA worth?

The TopHap Estimate for 21 Union St, Montague, MA is $332,845 as of Aug 30, 2026. The likely range is $314,074 to $351,616. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Union St, Montague, MA last sell?

21 Union St, Montague, MA last sold on Feb 17, 1993, according to the county's recorded deed.

How big is 21 Union St, Montague, MA?

21 Union St, Montague, MA has 3 bedrooms, 1 bathrooms, 1,218 square feet of living space and a 0.15-acre lot.

When was 21 Union St, Montague, MA built?

21 Union St, Montague, MA was built in 1845, making it 181 years old. The building has 2 stories.

What schools serve 21 Union St, Montague, MA?

21 Union St, Montague, MA is assigned to Turners Fall High School (high), rated D; Great Falls Middle School (middle), rated C; Hillcrest Elementary School (elementary). All sit in Gill-Montague School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Union St, Montague, MA compare to other homes in Montague 01351?

Among the 958 homes in Montague 01351, it is worth more than 34% of them ($332,845 against a typical $376,117), its price per square foot is higher than 77% of them ($273 against a typical $238), it is bigger than 22% of them (1,218 ft² against a typical 1,680 ft²), its lot is bigger than 2% of them (0.15 ac against a typical 1.1 ac) and it is newer than 8% of them (1845 against a typical 1974). Measured against all of Franklin County, it is worth more than 44% 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 21 Union St, Montague, MA?

The 2025 property tax bill for 21 Union St, Montague, MA was $3,778. The county assessed it at $248,400.

More homes on Union St

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Assigned schools

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