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Apartments (Generic)Residential
Last sold for $100,000 on Oct 10, 1991

30 RIVER ST

CAMBRIDGE, MA 02139
0
Baths
4,664 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.
2,042 ft²
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$100,000 · Oct 10, 1991
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.$200,000
MIDDLESEX FSLA · recorded Oct 16, 1998
2nd 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.$150,000
MIDDLESEX FSLA

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,887 (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.$2,187,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$806,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,380,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,187,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
StyleThe architectural style of the home, such as ranch or colonial.Two Family
CountyMiddlesex
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.0.05
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

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.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Amigos SchoolA
Elementary · Grades PK–8 · 0.2 mi
H
Cambridge Rindge and LatinA-
High · Grades 9–12 · 0.7 mi

District: Cambridge School District

Neighborhood · ZIP 02139These 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.136
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.74

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.39,263
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.22,546 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$114,313
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$158,134
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%

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

30 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.

  • Bigger than 97% of homes in Cambridgeport
  • Has a smaller lot than 98% of homes in Middlesex County
  • Older than 81% of homes in Middlesex County

How it measures up in Cambridge 02139

The dot is this home. The mark in the middle is the typical home in Cambridge 02139.

Living area4,664 ft²
SmallerTypical 1,200 ft²Bigger

Bigger than 96% of homes nearby

Lot size2,042 ft²
SmallerTypical 0.11 acBigger

Bigger than 10% of homes nearby

Year built1910
OlderTypical 1903Newer

Newer than 57% of homes nearby

How 30 River St ranks against every home in each area.
MeasureThis homeCambridgeportCambridge 02139Middlesex County
Living areabigger than4,664 ft²97% of homes96% of homes97% of homes
Lot sizebigger than2,042 ft²11% of homes10% of homes2% of homes
Year builtnewer than191057% of homes57% of homes19% of homes

About 30 River St

When did 30 River St, Cambridge, MA last sell?

30 River St, Cambridge, MA last sold on Oct 10, 1991 for $100,000, according to the county's recorded deed.

How big is 30 River St, Cambridge, MA?

30 River St, Cambridge, MA has 4,664 square feet of living space and a 0.05-acre lot.

When was 30 River St, Cambridge, MA built?

30 River St, Cambridge, MA was built in 1910, making it 116 years old. It is a two family home. The building has 3 stories.

What schools serve 30 River St, Cambridge, MA?

30 River St, Cambridge, MA is assigned to Amigos School (elementary), rated A; Cambridge Rindge and Latin (high), rated A-. All sit in Cambridge School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 30 River St, Cambridge, MA compare to other homes in Cambridge 02139?

Among the 7,274 homes in Cambridge 02139, it is bigger than 96% of them (4,664 ft² against a typical 1,200 ft²), its lot is bigger than 10% of them (2,042 ft² against a typical 0.11 ac) and it is newer than 57% of them (1910 against a typical 1903). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 30 River St, Cambridge, MA?

The 2025 property tax bill for 30 River St, Cambridge, MA was $13,887. The county assessed it at $2,187,000.

Closest homes

More homes in Cambridge 02139

Assigned schools

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