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Triplex (3 Units, Any Combination)Residential

145 COTTAGE ST

CHELSEA, MA 02150
8
Beds
3.5
Baths
2,560 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.
2,813 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.
12
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.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,414 (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.$732,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$181,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$551,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$676,500

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.0.07
HeatingThe type of heating system in the home.Steam
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(9)

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
Clark Avenue SchoolF
Middle · Grades 5–8 · 0.5 mi
E
William a Berkowitz Elementary SchoolC+
Elementary · Grades 1–4 · 0.8 mi
H
Chelsea High SchoolD-
High · Grades 9–12 · 1.0 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

145 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.

  • Bigger than 78% of homes in Suffolk County
  • Has a smaller lot than 69% 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.

Living area2,560 ft²
SmallerTypical 1,734 ft²Bigger

Bigger than 70% of homes nearby

Lot size2,813 ft²
SmallerTypical 3,659 ft²Bigger

Bigger than 31% of homes nearby

Year built1920
OlderTypical 1920Newer

Newer than 58% of homes nearby

How 145 Cottage St ranks against every home in each area.
MeasureThis homeChelsea 02150Suffolk County
Living areabigger than2,560 ft²70% of homes78% of homes
Lot sizebigger than2,813 ft²31% of homes52% of homes
Year builtnewer than192058% of homes55% of homes

About 145 Cottage St

When did 145 Cottage St, Chelsea, MA last sell?

145 Cottage St, Chelsea, MA last sold on Feb 1, 2018, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 145 Cottage St, Chelsea, MA?

145 Cottage St, Chelsea, MA has 8 bedrooms, 3.5 bathrooms, 2,560 square feet of living space and a 0.07-acre lot.

When was 145 Cottage St, Chelsea, MA built?

145 Cottage St, Chelsea, MA was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 145 Cottage St, Chelsea, MA?

145 Cottage St, Chelsea, MA is assigned to Clark Avenue School (middle), rated F; William a Berkowitz Elementary School (elementary), rated C+; Chelsea High School (high), rated D-. All sit in Chelsea School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 145 Cottage St, Chelsea, MA compare to other homes in Chelsea 02150?

Among the 5,340 homes in Chelsea 02150, it is bigger than 70% of them (2,560 ft² against a typical 1,734 ft²), its lot is bigger than 31% of them (2,813 ft² against a typical 3,659 ft²) and it is newer than 58% of them (1920 against a typical 1920). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 145 Cottage St, Chelsea, MA?

The 2026 property tax bill for 145 Cottage St, Chelsea, MA was $8,414. The county assessed it at $732,900.

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