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Single Family ResidenceResidential
$289,745$253 / 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 83How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

21 OBSERVER ST

SPRINGFIELD, MA 01104
3
Beds
2
Baths
1,144 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
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

$290K
$240K low$339K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,123 (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.$266,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$38,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$228,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$224,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$282,994

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.Ranch
CountyHAMPDEN
Lot (acres)The size of the land the home sits on, from county records.0.24
HeatingThe type of heating system in the home.Electric
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

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
John F Kennedy Middle SchoolF
Middle · Grades 6–8 · 1.0 mi
H
Springfield Public Day High SchoolF
High · Grades 9–12 · 1.3 mi
E
Margaret C Ells
Elementary · Grades PK–PK · 2.3 mi

District: Springfield School District

Neighborhood · ZIP 01104These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
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.8.7%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.22%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.25,391
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,468 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$46,704
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$61,556
Average tempThe average temperature here across a full year.49°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 Observer 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 71% of homes in Hampden County
  • Costs more per square foot than 68% of homes in Springfield 01104
  • Smaller than 76% of homes in Hampden County
  • Has a bigger lot than 91% of homes in East Springfield
  • Newer than 93% of homes in East Springfield

What homes are worth in Springfield 01104

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

This home
$202K$449K

This home is worth more than 56% of homes in Springfield 01104.

How it measures up in Springfield 01104

The dot is this home. The mark in the middle is the typical home in Springfield 01104.

Estimated value$289,745
CheaperTypical $283,775Pricier

Pricier than 56% of homes nearby

Price per ft²$253
CheaperTypical $233Pricier

Pricier than 68% of homes nearby

Living area1,144 ft²
SmallerTypical 1,401 ft²Bigger

Bigger than 29% of homes nearby

Lot size0.24 ac
SmallerTypical 0.13 acBigger

Bigger than 91% of homes nearby

Year built1987
OlderTypical 1941Newer

Newer than 93% of homes nearby

How 21 Observer St ranks against every home in each area.
MeasureThis homeEast SpringfieldSpringfield 01104Hampden County
Estimated valuepricier than$289,74553% of homes56% of homes29% of homes
Price per ft²pricier than$25361% of homes68% of homes57% of homes
Living areabigger than1,144 ft²38% of homes29% of homes24% of homes
Lot sizebigger than0.24 ac91% of homes91% of homes39% of homes
Year builtnewer than198793% of homes93% of homes83% of homes

About 21 Observer St

How much is 21 Observer St, Springfield, MA worth?

The TopHap Estimate for 21 Observer St, Springfield, MA is $289,745 as of Oct 21, 2026. The likely range is $240,226 to $339,264. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Observer St, Springfield, MA last sell?

21 Observer St, Springfield, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Observer St, Springfield, MA?

21 Observer St, Springfield, MA has 3 bedrooms, 2 bathrooms, 1,144 square feet of living space and a 0.24-acre lot.

When was 21 Observer St, Springfield, MA built?

21 Observer St, Springfield, MA was built in 1987, making it 39 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Observer St, Springfield, MA?

21 Observer St, Springfield, MA is assigned to John F Kennedy Middle School (middle), rated F; Springfield Public Day High School (high), rated F; Margaret C Ells (elementary). All sit in Springfield School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Observer St, Springfield, MA compare to other homes in Springfield 01104?

Among the 5,872 homes in Springfield 01104, it is worth more than 56% of them ($289,745 against a typical $283,775), its price per square foot is higher than 68% of them ($253 against a typical $233), it is bigger than 29% of them (1,144 ft² against a typical 1,401 ft²), its lot is bigger than 91% of them (0.24 ac against a typical 0.13 ac) and it is newer than 93% of them (1987 against a typical 1941). Measured against all of Hampden County, it is worth more than 29% 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 Observer St, Springfield, MA?

The 2026 property tax bill for 21 Observer St, Springfield, MA was $4,123. The county assessed it at $266,700.

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