Skip to content
Skip to content
TopHapOpen in map
Triplex (3 Units, Any Combination)Residential
Last sold for $1,000,000 on Sep 10, 2020

11 MASCOMA ST

DORCHESTER, MA 02121
3
Beds
3
Baths
4,038 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.
3,417 ft²
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
18
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

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,000,000 · Sep 10, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,242 (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.$1,229,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$239,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$990,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Triplex (3 Units, Any Combination)
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.2019
Lot (acres)The size of the land the home sits on, from county records.0.08
HeatingThe type of heating system in the home.Hot Water
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(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
Martin Luther Jr. King K-8 SchoolF
Elementary · Grades PK–8 · 0.1 mi
H
Jeremiah E. Burke High SchoolF
High · Grades 9–12 · 0.5 mi

District: Boston School District

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%

Owner Tools

Do you own this home?
Claim this home

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 Mascoma 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 95% of homes in Suffolk County
  • Has a smaller lot than 70% of homes in Dorchester 02121
  • Older than 72% of homes in Dorchester

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 area4,038 ft²
SmallerTypical 3,264 ft²Bigger

Bigger than 74% of homes nearby

Lot size3,417 ft²
SmallerTypical 4,269 ft²Bigger

Bigger than 30% of homes nearby

Year built1900
OlderTypical 1905Newer

Newer than 38% of homes nearby

How 11 Mascoma St ranks against every home in each area.
MeasureThis homeDorchesterDorchester 02121Suffolk County
Living areabigger than4,038 ft²90% of homes74% of homes95% of homes
Lot sizebigger than3,417 ft²44% of homes30% of homes58% of homes
Year builtnewer than190028% of homes38% of homes31% of homes

About 11 Mascoma St

When did 11 Mascoma St, Dorchester, MA last sell?

11 Mascoma St, Dorchester, MA last sold on Sep 10, 2020 for $1,000,000, according to the county's recorded deed.

How big is 11 Mascoma St, Dorchester, MA?

11 Mascoma St, Dorchester, MA has 3 bedrooms, 3 bathrooms, 4,038 square feet of living space and a 0.08-acre lot.

When was 11 Mascoma St, Dorchester, MA built?

11 Mascoma St, Dorchester, MA was built in 1900, making it 126 years old. The building has 3 stories.

What schools serve 11 Mascoma St, Dorchester, MA?

11 Mascoma St, Dorchester, MA is assigned to Martin Luther Jr. King K-8 School (elementary), rated F; Jeremiah E. Burke High School (high), rated F. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 11 Mascoma St, Dorchester, MA compare to other homes in Dorchester 02121?

Among the 2,911 homes in Dorchester 02121, it is bigger than 74% of them (4,038 ft² against a typical 3,264 ft²), its lot is bigger than 30% of them (3,417 ft² against a typical 4,269 ft²) and it is newer than 38% of them (1900 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 11 Mascoma St, Dorchester, MA?

The 2025 property tax bill for 11 Mascoma St, Dorchester, MA was $14,242. The county assessed it at $1,229,900.

More homes on Mascoma St

Closest homes

More homes in Dorchester 02121

Assigned schools

Explore the area

See this home in context

Open 11 Mascoma St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map