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CondominiumResidential
$708,660$668 / 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 93How 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
Last sold for $687,500 on Apr 30, 2025

20 UNION AVE

JAMAICA PLAIN, MA 02130
Building report
2
Beds
1
Baths
1,061 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.
1,061 ft²
Lot SizeThe size of the land the home sits on, from county records.
1899
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$709K
$658K low$759K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$687,500 · Apr 30, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,162 (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.$618,500 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$618,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$649,515

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.29 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.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountySUFFOLK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2000
Lot (acres)The size of the land the home sits on, from county records.0.02
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
Community Academy
High · Grades 9–12 · 0.1 mi
E
Mission Hill K-8 School
Elementary · Grades PK–8 · 0.4 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%

Owner Tools

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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

20 Union Ave 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.

  • Smaller than 70% of homes in Jamaica Plain 02130
  • Has a smaller lot than 74% of homes in Suffolk County
  • Older than 88% of homes in Jamaica Plain 02130

What homes are worth in Jamaica Plain 02130

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

This home
$392K$2.2M

This home is worth more than 41% 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.

Estimated value$708,660
CheaperTypical $786,843Pricier

Pricier than 41% of homes nearby

Price per ft²$668
CheaperTypical $641Pricier

Pricier than 61% of homes nearby

Living area1,061 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 30% of homes nearby

Lot size1,061 ft²
SmallerTypical 2,134 ft²Bigger

Bigger than 27% of homes nearby

Year built1899
OlderTypical 1910Newer

Newer than 12% of homes nearby

How 20 Union Ave ranks against every home in each area.
MeasureThis homeJamaica Plain 02130Suffolk County
Estimated valuepricier than$708,66041% of homes51% of homes
Price per ft²pricier than$66861% of homes56% of homes
Living areabigger than1,061 ft²30% of homes31% of homes
Lot sizebigger than1,061 ft²27% of homes26% of homes
Year builtnewer than189912% of homes18% of homes

About 20 Union Ave

How much is 20 Union Ave, Jamaica Plain, MA worth?

The TopHap Estimate for 20 Union Ave, Jamaica Plain, MA is $708,660 as of Oct 21, 2026. The likely range is $658,405 to $758,915. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Union Ave, Jamaica Plain, MA last sell?

20 Union Ave, Jamaica Plain, MA last sold on Apr 30, 2025 for $687,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 Union Ave, Jamaica Plain, MA?

20 Union Ave, Jamaica Plain, MA has 2 bedrooms, 1 bathrooms, 1,061 square feet of living space and a 0.02-acre lot.

When was 20 Union Ave, Jamaica Plain, MA built?

20 Union Ave, Jamaica Plain, MA was built in 1899, making it 127 years old. The building has 2 stories.

What schools serve 20 Union Ave, Jamaica Plain, MA?

20 Union Ave, Jamaica Plain, MA is assigned to Community Academy (high); Mission Hill K-8 School (elementary). All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Union Ave, Jamaica Plain, MA compare to other homes in Jamaica Plain 02130?

Among the 9,401 homes in Jamaica Plain 02130, it is worth more than 41% of them ($708,660 against a typical $786,843), its price per square foot is higher than 61% of them ($668 against a typical $641), it is bigger than 30% of them (1,061 ft² against a typical 1,456 ft²), its lot is bigger than 27% of them (1,061 ft² against a typical 2,134 ft²) and it is newer than 12% of them (1899 against a typical 1910). Measured against all of Suffolk County, it is worth more than 51% 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 20 Union Ave, Jamaica Plain, MA?

The 2025 property tax bill for 20 Union Ave, Jamaica Plain, MA was $7,162. The county assessed it at $618,500.

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