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CondominiumResidential
$422,537$650 / 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 98How 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 $435,000 on Oct 26, 2023

21 CHESTNUT ST

CHELSEA, MA 02150
Building report
2
Beds
1
Baths
650 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.
1900
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$423K
$413K low$432K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$435,000 · Oct 26, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,637 (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.$402,900 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$402,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$405,175

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountySUFFOLK
HeatingThe type of heating system in the home.Baseboard
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(19)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Eugene Wright Science and Technology AcademyD-
Middle · Grades 5–8 · 0.5 mi
H
Chelsea High SchoolD-
High · Grades 9–12 · 0.8 mi
E
William a Berkowitz Elementary SchoolC+
Elementary · Grades 1–4 · 1.4 mi

District: Chelsea School District

Neighborhood · ZIP 02150These 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.89
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.76

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.16%
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.40,106
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.16,087 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,192
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,537
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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 Chestnut 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 90% of homes in Suffolk County
  • Costs more per square foot than 98% of homes in Chelsea 02150
  • Smaller than 96% of homes in Chelsea 02150
  • Older than 69% of homes in Suffolk County

What homes are worth in Chelsea 02150

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

This home
$279K$842K

This home is worth more than 32% of homes in Chelsea 02150.

How it measures up in Chelsea 02150

The dot is this home. The mark in the middle is the typical home in Chelsea 02150.

Estimated value$422,537
CheaperTypical $488,908Pricier

Pricier than 32% of homes nearby

Price per ft²$650
CheaperTypical $436Pricier

Pricier than 98% of homes nearby

Living area650 ft²
SmallerTypical 1,749 ft²Bigger

Bigger than 4% of homes nearby

Year built1900
OlderTypical 1920Newer

Newer than 39% of homes nearby

How 21 Chestnut St ranks against every home in each area.
MeasureThis homeChelsea 02150Suffolk County
Estimated valuepricier than$422,53732% of homes10% of homes
Price per ft²pricier than$65098% of homes54% of homes
Living areabigger than650 ft²4% of homes9% of homes
Year builtnewer than190039% of homes31% of homes

About 21 Chestnut St

How much is 21 Chestnut St, Chelsea, MA worth?

The TopHap Estimate for 21 Chestnut St, Chelsea, MA is $422,537 as of Oct 21, 2026. The likely range is $412,691 to $432,383. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Chestnut St, Chelsea, MA last sell?

21 Chestnut St, Chelsea, MA last sold on Oct 26, 2023 for $435,000, according to the county's recorded deed. TopHap holds 11 recorded sales for this parcel.

How big is 21 Chestnut St, Chelsea, MA?

21 Chestnut St, Chelsea, MA has 2 bedrooms, 1 bathrooms and 650 square feet of living space.

When was 21 Chestnut St, Chelsea, MA built?

21 Chestnut St, Chelsea, MA was built in 1900, making it 126 years old. It is a condo/apartment home. The building has 1 story.

What schools serve 21 Chestnut St, Chelsea, MA?

21 Chestnut St, Chelsea, MA is assigned to Eugene Wright Science and Technology Academy (middle), rated D-; Chelsea High School (high), rated D-; William a Berkowitz Elementary School (elementary), rated C+. All sit in Chelsea School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Chestnut St, Chelsea, MA compare to other homes in Chelsea 02150?

Among the 5,340 homes in Chelsea 02150, it is worth more than 32% of them ($422,537 against a typical $488,908), its price per square foot is higher than 98% of them ($650 against a typical $436), it is bigger than 4% of them (650 ft² against a typical 1,749 ft²) and it is newer than 39% of them (1900 against a typical 1920). Measured against all of Suffolk County, it is worth more than 10% 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 Chestnut St, Chelsea, MA?

The 2025 property tax bill for 21 Chestnut St, Chelsea, MA was $4,637. The county assessed it at $402,900.

More homes on Chestnut St

Closest homes

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Assigned schools

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