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Duplex (2 Units, Any Combination)Residential

91 UNION ST

WESTFIELD, MA 01085
3
Beds
2
Baths
2,294 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.
0.3 ac
Lot SizeThe size of the land the home sits on, from county records.
1884
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,121 (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.$276,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$76,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$199,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$261,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$325,427

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.28
98
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
36
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.108 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.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
CountyHAMPDEN
Lot (acres)The size of the land the home sits on, from county records.0.30
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Slate
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Westfield Middle SchoolC-
Middle · Grades 7–8 · 1.5 mi
H
Westfield High SchoolC-
High · Grades 9–12 · 1.5 mi
E
Paper Mill Elementary SchoolC-
Elementary · Grades KG–4 · 1.6 mi

District: Westfield School District

Neighborhood · ZIP 01085These 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.73
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 100.60

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.42,029
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.668 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,603
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$101,101
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.50 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

91 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.

  • Bigger than 80% of homes in Hampden County
  • Has a smaller lot than 74% of homes in Westfield 01085
  • Older than 97% of homes in Hampden County

How it measures up in Westfield 01085

The dot is this home. The mark in the middle is the typical home in Westfield 01085.

Living area2,294 ft²
SmallerTypical 1,632 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.3 ac
SmallerTypical 0.5 acBigger

Bigger than 26% of homes nearby

Year built1884
OlderTypical 1964Newer

Newer than 5% of homes nearby

How 91 Union St ranks against every home in each area.
MeasureThis homeWestfield 01085Hampden County
Living areabigger than2,294 ft²78% of homes80% of homes
Lot sizebigger than0.3 ac26% of homes50% of homes
Year builtnewer than18845% of homes3% of homes

About 91 Union St

When did 91 Union St, Westfield, MA last sell?

91 Union St, Westfield, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 91 Union St, Westfield, MA?

91 Union St, Westfield, MA has 3 bedrooms, 2 bathrooms, 2,294 square feet of living space and a 0.30-acre lot.

When was 91 Union St, Westfield, MA built?

91 Union St, Westfield, MA was built in 1884, making it 142 years old. The building has 2 stories.

What schools serve 91 Union St, Westfield, MA?

91 Union St, Westfield, MA is assigned to Westfield Middle School (middle), rated C-; Westfield High School (high), rated C-; Paper Mill Elementary School (elementary), rated C-. All sit in Westfield School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 91 Union St, Westfield, MA compare to other homes in Westfield 01085?

Among the 11,970 homes in Westfield 01085, it is bigger than 78% of them (2,294 ft² against a typical 1,632 ft²), its lot is bigger than 26% of them (0.3 ac against a typical 0.5 ac) and it is newer than 5% of them (1884 against a typical 1964). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 91 Union St, Westfield, MA?

The 2026 property tax bill for 91 Union St, Westfield, MA was $4,121. The county assessed it at $276,000.

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