Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,456,262$1,235 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $590,000 on Nov 29, 2004

145 PROSPECT ST

CAMBRIDGE, MA 02139
2
Beds
1.5
Baths
1,179 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.
1,545 ft²
Lot SizeThe size of the land the home sits on, from county records.
1841
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.5M
$1.3M low$1.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$590,000 · Nov 29, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,336 (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.$1,155,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$560,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$594,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,100,480

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.Conventional
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.04
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.Asphalt
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
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(3)

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
CambridgeportA-
Elementary · Grades PK–5 · 0.2 mi
M
Amigos SchoolA
Middle · Grades PK–8 · 0.5 mi
H
Cambridge Rindge and LatinB
High · Grades 9–12 · 0.6 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

145 Prospect 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 87% of homes in Middlesex County
  • Among the highest price per square foot in Middlesex County
  • Smaller than 81% of homes in Middlesex County
  • Among the smallest lots in Middlesex County
  • Among the oldest homes in Mid-Cambridge

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
$393K$2.7M

This home is worth more than 81% 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$1,456,262
CheaperTypical $921,989Pricier

Pricier than 81% of homes nearby

Price per ft²$1235
CheaperTypical $916Pricier

Pricier than 93% of homes nearby

Living area1,179 ft²
SmallerTypical 1,200 ft²Bigger

Bigger than 49% of homes nearby

Lot size1,545 ft²
SmallerTypical 0.11 acBigger

Bigger than 4% of homes nearby

Year built1841
OlderTypical 1903Newer

Older than almost all homes nearby

How 145 Prospect St ranks against every home in each area.
MeasureThis homeMid-CambridgeCambridge 02139Middlesex County
Estimated valuepricier than$1,456,26281% of homes81% of homes87% of homes
Price per ft²pricier than$123591% of homes93% of homesalmost all homes
Living areabigger than1,179 ft²59% of homes49% of homes19% of homes
Lot sizebigger than1,545 ft²3% of homes4% of homesalmost no homes
Year builtnewer than1841almost no homesalmost no homesalmost no homes

About 145 Prospect St

How much is 145 Prospect St, Cambridge, MA worth?

The TopHap Estimate for 145 Prospect St, Cambridge, MA is $1,456,262 as of Sep 24, 2026. The likely range is $1,341,578 to $1,570,946. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 145 Prospect St, Cambridge, MA last sell?

145 Prospect St, Cambridge, MA last sold on Nov 29, 2004 for $590,000, according to the county's recorded deed.

How big is 145 Prospect St, Cambridge, MA?

145 Prospect St, Cambridge, MA has 2 bedrooms, 1.5 bathrooms, 1,179 square feet of living space and a 0.04-acre lot.

When was 145 Prospect St, Cambridge, MA built?

145 Prospect St, Cambridge, MA was built in 1841, making it 185 years old. It is a conventional home. The building has 2 stories.

What schools serve 145 Prospect St, Cambridge, MA?

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

How does 145 Prospect St, Cambridge, MA compare to other homes in Cambridge 02139?

Among the 7,274 homes in Cambridge 02139, it is worth more than 81% of them ($1,456,262 against a typical $921,989), its price per square foot is higher than 93% of them ($1235 against a typical $916), it is bigger than 49% of them (1,179 ft² against a typical 1,200 ft²), its lot is bigger than 4% of them (1,545 ft² against a typical 0.11 ac) and it is newer than almost none of them (1841 against a typical 1903). Measured against all of Middlesex County, it is worth more than 87% 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 145 Prospect St, Cambridge, MA?

The 2025 property tax bill for 145 Prospect St, Cambridge, MA was $7,336. The county assessed it at $1,155,200.

More homes on Prospect St

Closest homes

More homes in Cambridge 02139

Assigned schools

Explore the area

See this home in context

Open 145 Prospect St 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