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Triplex (3 Units, Any Combination)Residential
Last sold for $475,000 on Jan 30, 2012

21 ARMSTRONG ST

JAMAICA PLAIN, MA 02130
8
Beds
3
Baths
3,318 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.
3,606 ft²
Lot SizeThe size of the land the home sits on, from county records.
1925
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
17
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$475,000 · Jan 30, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,321 (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.$1,323,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$403,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$919,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,312,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Triplex (3 Units, Any Combination)
CountySuffolk
Lot (acres)The size of the land the home sits on, from county records.0.08
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Electric
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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.

E
John F. Kennedy Elementary SchoolC
Elementary · Grades PK–5 · 0.1 mi
M
Curley K-8 SchoolD
Middle · Grades PK–8 · 0.5 mi
H
Greater Egleston Community High School
High · Grades 9–12 · 0.6 mi

District: Boston School District

Neighborhood · ZIP 02130These 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.94
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.75

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.37,863
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.10,409 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$114,234
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,638
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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 Armstrong 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 88% of homes in Suffolk County
  • Has a bigger lot than 66% of homes in Jamaica Plain 02130
  • Newer than 65% of homes in Jamaica Plain 02130

How it measures up in Jamaica Plain 02130

The dot is this home. The mark in the middle is the typical home in Jamaica Plain 02130.

Living area3,318 ft²
SmallerTypical 1,442 ft²Bigger

Bigger than 87% of homes nearby

Lot size3,606 ft²
SmallerTypical 2,047 ft²Bigger

Bigger than 66% of homes nearby

Year built1925
OlderTypical 1910Newer

Newer than 65% of homes nearby

How 21 Armstrong St ranks against every home in each area.
MeasureThis homeJamaica Plain 02130Suffolk County
Living areabigger than3,318 ft²87% of homes88% of homes
Lot sizebigger than3,606 ft²66% of homes59% of homes
Year builtnewer than192565% of homes58% of homes

About 21 Armstrong St

When did 21 Armstrong St, Jamaica Plain, MA last sell?

21 Armstrong St, Jamaica Plain, MA last sold on Jan 30, 2012 for $475,000, according to the county's recorded deed.

How big is 21 Armstrong St, Jamaica Plain, MA?

21 Armstrong St, Jamaica Plain, MA has 8 bedrooms, 3 bathrooms, 3,318 square feet of living space and a 0.08-acre lot.

When was 21 Armstrong St, Jamaica Plain, MA built?

21 Armstrong St, Jamaica Plain, MA was built in 1925, making it 101 years old. The building has 3 stories.

What schools serve 21 Armstrong St, Jamaica Plain, MA?

21 Armstrong St, Jamaica Plain, MA is assigned to John F. Kennedy Elementary School (elementary), rated C; Curley K-8 School (middle), rated D; Greater Egleston Community High School (high). All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Armstrong St, Jamaica Plain, MA compare to other homes in Jamaica Plain 02130?

Among the 9,401 homes in Jamaica Plain 02130, it is bigger than 87% of them (3,318 ft² against a typical 1,442 ft²), its lot is bigger than 66% of them (3,606 ft² against a typical 2,047 ft²) and it is newer than 65% of them (1925 against a typical 1910). 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 Armstrong St, Jamaica Plain, MA?

The 2025 property tax bill for 21 Armstrong St, Jamaica Plain, MA was $15,321. The county assessed it at $1,323,100.

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