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Duplex (2 Units, Any Combination)Residential

20 CARMEN ST

DORCHESTER, MA 02121
6
Beds
2
Baths
2,950 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.
4,155 ft²
Lot SizeThe size of the land the home sits on, from county records.
1909
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.
1
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.$8,402 (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.$725,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$236,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$489,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$717,500

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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Two Family
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.2004
Lot (acres)The size of the land the home sits on, from county records.0.10
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
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.

E
Sarah Greenwood K-8 SchoolF
Elementary · Grades PK–8 · 0.3 mi
H
Up Academy DorchesterD-
High · Grades PK–12 · 0.4 mi

District: UP Academy Charter School of Dorchester

Neighborhood · ZIP 02121These 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.142
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 100.73

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.23%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.28,076
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.22,114 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$45,811
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$77,928
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

20 Carmen 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 84% of homes in Suffolk County
  • Has a bigger lot than 66% of homes in Suffolk County

How it measures up in Dorchester 02121

The dot is this home. The mark in the middle is the typical home in Dorchester 02121.

Living area2,950 ft²
SmallerTypical 3,261 ft²Bigger

Bigger than 42% of homes nearby

Lot size4,155 ft²
SmallerTypical 4,269 ft²Bigger

Bigger than 47% of homes nearby

Year built1909
OlderTypical 1905Newer

Newer than 57% of homes nearby

How 20 Carmen St ranks against every home in each area.
MeasureThis homeDorchesterDorchester 02121Suffolk County
Living areabigger than2,950 ft²64% of homes42% of homes84% of homes
Lot sizebigger than4,155 ft²61% of homes47% of homes66% of homes
Year builtnewer than190950% of homes57% of homes37% of homes

About 20 Carmen St

When did 20 Carmen St, Dorchester, MA last sell?

20 Carmen St, Dorchester, MA last sold on Apr 7, 2023, according to the county's recorded deed.

How big is 20 Carmen St, Dorchester, MA?

20 Carmen St, Dorchester, MA has 6 bedrooms, 2 bathrooms, 2,950 square feet of living space and a 0.10-acre lot.

When was 20 Carmen St, Dorchester, MA built?

20 Carmen St, Dorchester, MA was built in 1909, making it 117 years old. It is a two family home. The building has 2 stories.

What schools serve 20 Carmen St, Dorchester, MA?

20 Carmen St, Dorchester, MA is assigned to Sarah Greenwood K-8 School (elementary), rated F; Up Academy Dorchester (high), rated D-. All sit in UP Academy Charter School of Dorchester. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Carmen St, Dorchester, MA compare to other homes in Dorchester 02121?

Among the 2,911 homes in Dorchester 02121, it is bigger than 42% of them (2,950 ft² against a typical 3,261 ft²), its lot is bigger than 47% of them (4,155 ft² against a typical 4,269 ft²) and it is newer than 57% of them (1909 against a typical 1905). 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 Carmen St, Dorchester, MA?

The 2025 property tax bill for 20 Carmen St, Dorchester, MA was $8,402. The county assessed it at $725,600.

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