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Apartments (Generic)Residential

133 RIVER ST

MATTAPAN, MA 02126
0
Baths
7,904 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
Year BuiltThe year the home was originally built, according to county records.
4
StoriesHow many floors the home has above ground.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,854 (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.$1,196,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$354,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$841,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,249,900

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
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.1970
Lot (acres)The size of the land the home sits on, from county records.0.12
ConstructionThe main material the home's frame and walls are built from.Brick
HeatingThe type of heating system in the home.None
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
Charles H. Taylor Elementary SchoolF
Elementary · Grades PK–5 · 0.4 mi
H
Boston International High SchoolF
High · Grades 9–12 · 0.7 mi
M
Dr. William Henderson Upper SchoolD-
Middle · Grades 5–12 · 0.8 mi

District: Boston School District

Neighborhood · ZIP 02126These 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.84
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 100.75

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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.22,143
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.12,185 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,782
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,132
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

133 River 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.

  • Among the largest homes in Mattapan
  • Has a bigger lot than 80% of homes in Suffolk County
  • Newer than 81% of homes in Mattapan

How it measures up in Mattapan 02126

The dot is this home. The mark in the middle is the typical home in Mattapan 02126.

Living area7,904 ft²
SmallerTypical 1,930 ft²Bigger

Bigger than almost all homes nearby

Lot size0.12 ac
SmallerTypical 0.11 acBigger

Bigger than 63% of homes nearby

Year built1950
OlderTypical 1930Newer

Newer than 80% of homes nearby

How 133 River St ranks against every home in each area.
MeasureThis homeMattapanMattapan 02126Suffolk County
Living areabigger than7,904 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than0.12 ac66% of homes63% of homes80% of homes
Year builtnewer than195081% of homes80% of homes69% of homes

About 133 River St

How big is 133 River St, Mattapan, MA?

133 River St, Mattapan, MA has 7,904 square feet of living space and a 0.12-acre lot.

When was 133 River St, Mattapan, MA built?

133 River St, Mattapan, MA was built in 1950, making it 76 years old. The building has 4 stories.

What schools serve 133 River St, Mattapan, MA?

133 River St, Mattapan, MA is assigned to Charles H. Taylor Elementary School (elementary), rated F; Boston International High School (high), rated F; Dr. William Henderson Upper School (middle), rated D-. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 133 River St, Mattapan, MA compare to other homes in Mattapan 02126?

Among the 3,890 homes in Mattapan 02126, it is bigger than almost all of them (7,904 ft² against a typical 1,930 ft²), its lot is bigger than 63% of them (0.12 ac against a typical 0.11 ac) and it is newer than 80% of them (1950 against a typical 1930). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 133 River St, Mattapan, MA?

The 2025 property tax bill for 133 River St, Mattapan, MA was $13,854. The county assessed it at $1,196,400.

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