Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential
$498,998$998 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

73 RIVER ST APT 3B

CAMBRIDGE, MA 02139
Building report
1
Beds
1
Baths
500 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.
1902
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$499K
$485K low$513K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,757 (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.$434,200 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$434,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$412,500

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.36
3
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
59
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
89
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Condominium
CountyMiddlesex
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

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 · 0.1 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%

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

73 River St Apt 3b 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 95% of homes in Cambridge 02139
  • Costs more per square foot than 97% of homes in Middlesex County
  • Among the smallest homes in Middlesex County
  • Older than 84% of homes in Middlesex County

What homes are worth in Cambridge 02139

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

This home
$390K$2.7M

This home is worth more than 5% of homes in Cambridge 02139.

How it measures up in Cambridge 02139

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

Estimated value$498,998
CheaperTypical $937,574Pricier

Pricier than 5% of homes nearby

Price per ft²$998
CheaperTypical $926Pricier

Pricier than 69% of homes nearby

Living area500 ft²
SmallerTypical 1,200 ft²Bigger

Bigger than 3% of homes nearby

Year built1902
OlderTypical 1903Newer

Newer than 46% of homes nearby

How 73 River St Apt 3b ranks against every home in each area.
MeasureThis homeRiversideCambridge 02139Middlesex County
Estimated valuepricier than$498,9986% of homes5% of homes15% of homes
Price per ft²pricier than$99861% of homes69% of homes97% of homes
Living areabigger than500 ft²3% of homes3% of homesalmost no homes
Year builtnewer than190240% of homes46% of homes16% of homes

About 73 River St Apt 3b

How much is 73 River St Apt 3b, Cambridge, MA worth?

The TopHap Estimate for 73 River St Apt 3b, Cambridge, MA is $498,998 as of Aug 30, 2026. The likely range is $484,719 to $513,277. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 73 River St Apt 3b, Cambridge, MA?

73 River St Apt 3b, Cambridge, MA has 1 bedrooms, 1 bathrooms and 500 square feet of living space.

When was 73 River St Apt 3b, Cambridge, MA built?

73 River St Apt 3b, Cambridge, MA was built in 1902, making it 124 years old. The building has 1 story.

What schools serve 73 River St Apt 3b, Cambridge, MA?

73 River St Apt 3b, 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 73 River St Apt 3b, Cambridge, MA compare to other homes in Cambridge 02139?

Among the 7,274 homes in Cambridge 02139, it is worth more than 5% of them ($498,998 against a typical $937,574), its price per square foot is higher than 69% of them ($998 against a typical $926), it is bigger than 3% of them (500 ft² against a typical 1,200 ft²) and it is newer than 46% of them (1902 against a typical 1903). Measured against all of Middlesex County, it is worth more than 15% 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 73 River St Apt 3b, Cambridge, MA?

The 2025 property tax bill for 73 River St Apt 3b, Cambridge, MA was $2,757. The county assessed it at $434,200.

More homes on River St Apt 3b

Closest homes

More homes in Cambridge 02139

Assigned schools

Explore the area

See this home in context

Open 73 River St Apt 3b 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