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CondominiumResidential
$687,391$639 / 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 $686,500 on Aug 31, 2026

331 CHELSEA ST

EAST BOSTON, MA 02128
Building report
2
Beds
2
Baths
1,075 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.
2,286 ft²
Lot SizeThe size of the land the home sits on, from county records.
2019
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

$687K
$637K low$738K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$686,500 · Aug 31, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,622 (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.$658,200 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$658,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$614,460

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.38 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.74%
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.1 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.Condominium
CountySUFFOLK
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
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.

E
Patrick J. Kennedy Elementary SchoolD+
Elementary · Grades PK–5 · 0.1 mi
H
East Boston High SchoolD-
High · Grades 9–12 · 0.4 mi
M
Mario Umana AcademyF
Middle · Grades KG–8 · 0.6 mi

District: Boston School District

Neighborhood · ZIP 02128These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.80

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.42,419
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,831 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,432
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,916
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.44 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

331 Chelsea 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.

  • Smaller than 68% of homes in East Boston 02128
  • Newer than 97% of homes in Suffolk County

What homes are worth in East Boston 02128

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

This home
$335K$1.1M

This home is worth more than 64% of homes in East Boston 02128.

How it measures up in East Boston 02128

The dot is this home. The mark in the middle is the typical home in East Boston 02128.

Estimated value$687,391
CheaperTypical $631,776Pricier

Pricier than 64% of homes nearby

Price per ft²$639
CheaperTypical $623Pricier

Pricier than 54% of homes nearby

Living area1,075 ft²
SmallerTypical 1,545 ft²Bigger

Bigger than 32% of homes nearby

Lot size2,286 ft²
SmallerTypical 2,134 ft²Bigger

Bigger than 54% of homes nearby

Year built2019
OlderTypical 1910Newer

Newer than 91% of homes nearby

How 331 Chelsea St ranks against every home in each area.
MeasureThis homeEast Boston 02128Suffolk County
Estimated valuepricier than$687,39164% of homes48% of homes
Price per ft²pricier than$63954% of homes53% of homes
Living areabigger than1,075 ft²32% of homes32% of homes
Lot sizebigger than2,286 ft²54% of homes48% of homes
Year builtnewer than201991% of homes97% of homes

About 331 Chelsea St

How much is 331 Chelsea St, East Boston, MA worth?

The TopHap Estimate for 331 Chelsea St, East Boston, MA is $687,391 as of Oct 21, 2026. The likely range is $637,146 to $737,636. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 331 Chelsea St, East Boston, MA last sell?

331 Chelsea St, East Boston, MA last sold on Aug 31, 2026 for $686,500, according to the county's recorded deed.

How big is 331 Chelsea St, East Boston, MA?

331 Chelsea St, East Boston, MA has 2 bedrooms, 2 bathrooms and 1,075 square feet of living space.

When was 331 Chelsea St, East Boston, MA built?

331 Chelsea St, East Boston, MA was built in 2019, making it 7 years old. The building has 1 story.

What schools serve 331 Chelsea St, East Boston, MA?

331 Chelsea St, East Boston, MA is assigned to Patrick J. Kennedy Elementary School (elementary), rated D+; East Boston High School (high), rated D-; Mario Umana Academy (middle), rated F. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 331 Chelsea St, East Boston, MA compare to other homes in East Boston 02128?

Among the 7,864 homes in East Boston 02128, it is worth more than 64% of them ($687,391 against a typical $631,776), its price per square foot is higher than 54% of them ($639 against a typical $623), it is bigger than 32% of them (1,075 ft² against a typical 1,545 ft²), its lot is bigger than 54% of them (2,286 ft² against a typical 2,134 ft²) and it is newer than 91% of them (2019 against a typical 1910). Measured against all of Suffolk County, it is worth more than 48% 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 331 Chelsea St, East Boston, MA?

The 2025 property tax bill for 331 Chelsea St, East Boston, MA was $7,622. The county assessed it at $658,200.

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Assigned schools

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