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Single Family ResidenceResidential
$589,911$370 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $108,000 on Sep 27, 1989

11 COTTAGE ST

CHELSEA, MA 02150
3
Beds
1.5
Baths
1,594 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.
1,575 ft²
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
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

$590K
$558K low$622K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$108,000 · Sep 27, 1989

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,483 (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.$390,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$146,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$244,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$383,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$650,750

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.Conventional
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.04
HeatingThe type of heating system in the home.Hot Water
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(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.

M
Eugene Wright Science and Technology AcademyD-
Middle · Grades 5–8 · 0.3 mi
H
Chelsea High SchoolD-
High · Grades 9–12 · 0.7 mi
E
William a Berkowitz Elementary SchoolC+
Elementary · Grades 1–4 · 0.9 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

11 Cottage 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 more than 76% of homes in Chelsea 02150
  • Costs less per square foot than 91% of homes in Suffolk County
  • Has a smaller lot than 92% of homes in Chelsea 02150

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$830K

This home is worth more than 76% 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$589,911
CheaperTypical $491,046Pricier

Pricier than 76% of homes nearby

Price per ft²$370
CheaperTypical $437Pricier

Pricier than 22% of homes nearby

Living area1,594 ft²
SmallerTypical 1,726 ft²Bigger

Bigger than 45% of homes nearby

Lot size1,575 ft²
SmallerTypical 3,703 ft²Bigger

Bigger than 8% of homes nearby

Year built1920
OlderTypical 1920Newer

Newer than 59% of homes nearby

How 11 Cottage St ranks against every home in each area.
MeasureThis homeChelsea 02150Suffolk County
Estimated valuepricier than$589,91176% of homes32% of homes
Price per ft²pricier than$37022% of homes9% of homes
Living areabigger than1,594 ft²45% of homes55% of homes
Lot sizebigger than1,575 ft²8% of homes40% of homes
Year builtnewer than192059% of homes55% of homes

About 11 Cottage St

How much is 11 Cottage St, Chelsea, MA worth?

The TopHap Estimate for 11 Cottage St, Chelsea, MA is $589,911 as of Sep 24, 2026. The likely range is $557,548 to $622,274. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 11 Cottage St, Chelsea, MA last sell?

11 Cottage St, Chelsea, MA last sold on Sep 27, 1989 for $108,000, according to the county's recorded deed.

How big is 11 Cottage St, Chelsea, MA?

11 Cottage St, Chelsea, MA has 3 bedrooms, 1.5 bathrooms, 1,594 square feet of living space and a 0.04-acre lot.

When was 11 Cottage St, Chelsea, MA built?

11 Cottage St, Chelsea, MA was built in 1920, making it 106 years old. It is a conventional home. The building has 2 stories.

What schools serve 11 Cottage St, Chelsea, MA?

11 Cottage 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 11 Cottage St, Chelsea, MA compare to other homes in Chelsea 02150?

Among the 5,340 homes in Chelsea 02150, it is worth more than 76% of them ($589,911 against a typical $491,046), its price per square foot is higher than 22% of them ($370 against a typical $437), it is bigger than 45% of them (1,594 ft² against a typical 1,726 ft²), its lot is bigger than 8% of them (1,575 ft² against a typical 3,703 ft²) and it is newer than 59% of them (1920 against a typical 1920). Measured against all of Suffolk County, it is worth more than 32% 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 11 Cottage St, Chelsea, MA?

The 2026 property tax bill for 11 Cottage St, Chelsea, MA was $4,483. The county assessed it at $390,500.

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Assigned schools

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