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Single Family ResidenceResidential
$611,268$261 / 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 96How 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 $230,000 on Mar 8, 2010

603 RIVER ST

MATTAPAN, MA 02126
4
Beds
1.5
Baths
2,340 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.
0.18 ac
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.
2
StoriesHow many floors the home has above ground.
7
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.

Valuation

$611K
$586K low$637K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$230,000 · Mar 8, 2010
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.$388,738
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$310,990
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.42%
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.$222,530
MERRIMAC MORTGAGE CO · recorded Nov 23, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,510 (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.$562,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$249,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$312,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$703,475

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.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.18
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

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 · 1.0 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.Owner occupied
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

603 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 more than 70% of homes in Mattapan 02126
  • Among the lowest price per square foot in Suffolk County
  • Bigger than 74% of homes in Suffolk County
  • Has a bigger lot than 91% of homes in Suffolk County
  • Older than 92% of homes 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 70% 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$611,268
CheaperTypical $559,999Pricier

Pricier than 70% of homes nearby

Price per ft²$261
CheaperTypical $406Pricier

Pricier than 5% of homes nearby

Living area2,340 ft²
SmallerTypical 1,926 ft²Bigger

Bigger than 62% of homes nearby

Lot size0.18 ac
SmallerTypical 0.11 acBigger

Bigger than 89% of homes nearby

Year built1900
OlderTypical 1929Newer

Newer than 8% of homes nearby

How 603 River St ranks against every home in each area.
MeasureThis homeMattapanMattapan 02126Suffolk County
Estimated valuepricier than$611,26866% of homes70% of homes34% of homes
Price per ft²pricier than$2615% of homes5% of homesalmost no homes
Living areabigger than2,340 ft²65% of homes62% of homes74% of homes
Lot sizebigger than0.18 ac90% of homes89% of homes91% of homes
Year builtnewer than190011% of homes8% of homes31% of homes

About 603 River St

How much is 603 River St, Mattapan, MA worth?

The TopHap Estimate for 603 River St, Mattapan, MA is $611,268 as of Jul 14, 2026. The likely range is $585,559 to $636,977. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 603 River St, Mattapan, MA last sell?

603 River St, Mattapan, MA last sold on Mar 8, 2010 for $230,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 603 River St, Mattapan, MA?

603 River St, Mattapan, MA has 4 bedrooms, 1.5 bathrooms, 2,340 square feet of living space and a 0.18-acre lot.

When was 603 River St, Mattapan, MA built?

603 River St, Mattapan, MA was built in 1900, making it 126 years old. It is a colonial home. The building has 2 stories.

What schools serve 603 River St, Mattapan, MA?

603 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 603 River St, Mattapan, MA compare to other homes in Mattapan 02126?

Among the 3,890 homes in Mattapan 02126, it is worth more than 70% of them ($611,268 against a typical $559,999), its price per square foot is higher than 5% of them ($261 against a typical $406), it is bigger than 62% of them (2,340 ft² against a typical 1,926 ft²), its lot is bigger than 89% of them (0.18 ac against a typical 0.11 ac) and it is newer than 8% of them (1900 against a typical 1929). Measured against all of Suffolk County, it is worth more than 34% 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 603 River St, Mattapan, MA?

The 2025 property tax bill for 603 River St, Mattapan, MA was $6,510. The county assessed it at $562,200.

Closest homes

More homes in Mattapan 02126

Assigned schools

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