Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$371,481$191 / 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 95How 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 $340,000 on Nov 19, 2024

100 UNION ST

WESTFIELD, MA 01085
3
Beds
2
Baths
1,950 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.
0.45 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
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

$371K
$351K low$392K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$340,000 · Nov 19, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,299 (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.$283,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$80,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$202,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$323,285

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.30 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyHAMPDEN
Lot (acres)The size of the land the home sits on, from county records.0.45
ConstructionThe main material the home's frame and walls are built from.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
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(2)

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
Westfield High SchoolB-
High · Grades 9–12 · 1.5 mi
M
Westfield Middle SchoolC-
Middle · Grades 7–8 · 1.5 mi
E
Paper Mill Elementary SchoolB
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%

Owner Tools

Do you own this home?
Claim this home

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

100 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.

  • Costs less per square foot than 89% of homes in Westfield 01085
  • Bigger than 70% of homes in Hampden County

What homes are worth in Westfield 01085

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

This home
$191K$737K

This home is worth more than 48% of homes in Westfield 01085.

How it measures up in Westfield 01085

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

Estimated value$371,481
CheaperTypical $377,208Pricier

Pricier than 48% of homes nearby

Price per ft²$191
CheaperTypical $250Pricier

Pricier than 11% of homes nearby

Living area1,950 ft²
SmallerTypical 1,638 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.45 ac
SmallerTypical 0.5 acBigger

Bigger than 41% of homes nearby

Year built1958
OlderTypical 1964Newer

Newer than 43% of homes nearby

How 100 Union St ranks against every home in each area.
MeasureThis homeWestfield 01085Hampden County
Estimated valuepricier than$371,48148% of homes63% of homes
Price per ft²pricier than$19111% of homes17% of homes
Living areabigger than1,950 ft²65% of homes70% of homes
Lot sizebigger than0.45 ac41% of homes64% of homes
Year builtnewer than195843% of homes54% of homes

About 100 Union St

How much is 100 Union St, Westfield, MA worth?

The TopHap Estimate for 100 Union St, Westfield, MA is $371,481 as of Aug 30, 2026. The likely range is $351,101 to $391,861. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Union St, Westfield, MA last sell?

100 Union St, Westfield, MA last sold on Nov 19, 2024 for $340,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 100 Union St, Westfield, MA?

100 Union St, Westfield, MA has 3 bedrooms, 2 bathrooms, 1,950 square feet of living space and a 0.45-acre lot.

When was 100 Union St, Westfield, MA built?

100 Union St, Westfield, MA was built in 1958, making it 68 years old. It is a conventional home. The building has 2 stories.

What schools serve 100 Union St, Westfield, MA?

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

How does 100 Union St, Westfield, MA compare to other homes in Westfield 01085?

Among the 11,970 homes in Westfield 01085, it is worth more than 48% of them ($371,481 against a typical $377,208), its price per square foot is higher than 11% of them ($191 against a typical $250), it is bigger than 65% of them (1,950 ft² against a typical 1,638 ft²), its lot is bigger than 41% of them (0.45 ac against a typical 0.5 ac) and it is newer than 43% of them (1958 against a typical 1964). Measured against all of Hampden County, it is worth more than 63% 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 100 Union St, Westfield, MA?

The 2025 property tax bill for 100 Union St, Westfield, MA was $4,299. The county assessed it at $283,200.

More homes on Union St

Closest homes

More homes in Westfield 01085

Assigned schools

Explore the area

See this home in context

Open 100 Union St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map