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CondominiumResidential
$350,544$470 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $220,000 on Nov 28, 2018

633 RIVER ST

MATTAPAN, MA 02126
Building report
3
Beds
1
Baths
746 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.
746 ft²
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
1
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$351K
$326K low$375K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$220,000 · Nov 28, 2018
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$205,544
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$164,435
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.46%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$145,000
BRIDGEWATER SAVINGS BANK · recorded Nov 28, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,499 (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.$302,200 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$302,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$321,670

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
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.1999
Lot (acres)The size of the land the home sits on, from county records.0.02
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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
James J Chittick Elementary SchoolC-
Elementary · Grades PK–5 · 0.3 mi
M
Mildred Avenue K-8 SchoolD+
Middle · Grades KG–8 · 0.8 mi
H
Another Course To CollegeF
High · Grades 9–12 · 0.9 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

633 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.

  • Worth less than 97% of homes in Suffolk County
  • Costs more per square foot than 81% of homes in Mattapan 02126
  • Among the smallest homes in Mattapan 02126
  • Among the smallest lots in Mattapan 02126

What homes are worth in Mattapan 02126

Each bar is how many homes fall in that price range. The marker is this home.

This home
$298K$810K

This home is worth more than 5% of homes in Mattapan 02126.

How it measures up in Mattapan 02126

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

Estimated value$350,544
CheaperTypical $559,999Pricier

Pricier than 5% of homes nearby

Price per ft²$470
CheaperTypical $406Pricier

Pricier than 81% of homes nearby

Living area746 ft²
SmallerTypical 1,926 ft²Bigger

Smaller than almost all homes nearby

Lot size746 ft²
SmallerTypical 0.11 acBigger

Smaller than almost all homes nearby

Year built1930
OlderTypical 1929Newer

Newer than 53% of homes nearby

How 633 River St ranks against every home in each area.
MeasureThis homeMattapanMattapan 02126Suffolk County
Estimated valuepricier than$350,5446% of homes5% of homes3% of homes
Price per ft²pricier than$47074% of homes81% of homes25% of homes
Living areabigger than746 ft²2% of homesalmost no homes14% of homes
Lot sizebigger than746 ft²2% of homesalmost no homes14% of homes
Year builtnewer than193053% of homes53% of homes62% of homes

About 633 River St

How much is 633 River St, Mattapan, MA worth?

The TopHap Estimate for 633 River St, Mattapan, MA is $350,544 as of Jul 14, 2026. The likely range is $325,665 to $375,423. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 633 River St, Mattapan, MA last sell?

633 River St, Mattapan, MA last sold on Nov 28, 2018 for $220,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 633 River St, Mattapan, MA?

633 River St, Mattapan, MA has 3 bedrooms, 1 bathrooms, 746 square feet of living space and a 0.02-acre lot.

When was 633 River St, Mattapan, MA built?

633 River St, Mattapan, MA was built in 1930, making it 96 years old. The building has 1 story.

What schools serve 633 River St, Mattapan, MA?

633 River St, Mattapan, MA is assigned to James J Chittick Elementary School (elementary), rated C-; Mildred Avenue K-8 School (middle), rated D+; Another Course To College (high), rated F. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 633 River St, Mattapan, MA compare to other homes in Mattapan 02126?

Among the 3,890 homes in Mattapan 02126, it is worth more than 5% of them ($350,544 against a typical $559,999), its price per square foot is higher than 81% of them ($470 against a typical $406), it is bigger than almost none of them (746 ft² against a typical 1,926 ft²), its lot is bigger than almost none of them (746 ft² against a typical 0.11 ac) and it is newer than 53% of them (1930 against a typical 1929). Measured against all of Suffolk County, it is worth more than 3% 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 633 River St, Mattapan, MA?

The 2025 property tax bill for 633 River St, Mattapan, MA was $3,499. The county assessed it at $302,200.

Closest homes

More homes in Mattapan 02126

Assigned schools

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