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Single Family ResidenceResidential
$4,485,322$1,661 / 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 90How 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 $4,250,000 on May 15, 2024

31 ASH ST

CAMBRIDGE, MA 02138
4
Beds
2.5
Baths
2,700 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.
3,870 ft²
Lot SizeThe size of the land the home sits on, from county records.
1873
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

$4.5M
$4M low$4.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$4,250,000 · May 15, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$27,790 (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.$4,376,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,526,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,850,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,504,075

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.0.09
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
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(7)

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.

H
Cambridge Rindge and LatinB
High · Grades 9–12 · 0.7 mi
E
Maria L. BaldwinA+
Elementary · Grades PK–5 · 0.8 mi
M
Putnam Avenue Upper SchoolB+
Middle · Grades 6–8 · 0.8 mi

District: Cambridge School District

Neighborhood · ZIP 02138These 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.133
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 100.70

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.91%
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.9.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.38,365
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.12,448 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$117,772
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$164,381
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%

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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

31 Ash 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.

  • Among the most valuable homes in Middlesex County
  • Among the highest price per square foot in Middlesex County
  • Bigger than 89% of homes in Harvard Square
  • Has a smaller lot than 92% of homes in Middlesex County
  • Older than 97% of homes in Middlesex County

What homes are worth in Cambridge 02138

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

This home
$446K$7.7M

This home is worth more than 92% of homes in Cambridge 02138.

How it measures up in Cambridge 02138

The dot is this home. The mark in the middle is the typical home in Cambridge 02138.

Estimated value$4,485,322
CheaperTypical $1,060,688Pricier

Pricier than 92% of homes nearby

Price per ft²$1661
CheaperTypical $981Pricier

Pricier than 94% of homes nearby

Living area2,700 ft²
SmallerTypical 1,328 ft²Bigger

Bigger than 80% of homes nearby

Lot size3,870 ft²
SmallerTypical 0.17 acBigger

Bigger than 19% of homes nearby

Year built1873
OlderTypical 1920Newer

Newer than 8% of homes nearby

How 31 Ash St ranks against every home in each area.
MeasureThis homeHarvard SquareCambridge 02138Middlesex County
Estimated valuepricier than$4,485,32291% of homes92% of homesalmost all homes
Price per ft²pricier than$166172% of homes94% of homesalmost all homes
Living areabigger than2,700 ft²89% of homes80% of homes79% of homes
Lot sizebigger than3,870 ft²14% of homes19% of homes8% of homes
Year builtnewer than187313% of homes8% of homes3% of homes

About 31 Ash St

How much is 31 Ash St, Cambridge, MA worth?

The TopHap Estimate for 31 Ash St, Cambridge, MA is $4,485,322 as of Sep 24, 2026. The likely range is $4,042,575 to $4,928,069. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 31 Ash St, Cambridge, MA last sell?

31 Ash St, Cambridge, MA last sold on May 15, 2024 for $4,250,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 31 Ash St, Cambridge, MA?

31 Ash St, Cambridge, MA has 4 bedrooms, 2.5 bathrooms, 2,700 square feet of living space and a 0.09-acre lot.

When was 31 Ash St, Cambridge, MA built?

31 Ash St, Cambridge, MA was built in 1873, making it 153 years old. It is a conventional home. The building has 2 stories.

What schools serve 31 Ash St, Cambridge, MA?

31 Ash St, Cambridge, MA is assigned to Cambridge Rindge and Latin (high), rated B; Maria L. Baldwin (elementary), rated A+; Putnam Avenue Upper School (middle), rated B+. All sit in Cambridge School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 31 Ash St, Cambridge, MA compare to other homes in Cambridge 02138?

Among the 7,738 homes in Cambridge 02138, it is worth more than 92% of them ($4,485,322 against a typical $1,060,688), its price per square foot is higher than 94% of them ($1661 against a typical $981), it is bigger than 80% of them (2,700 ft² against a typical 1,328 ft²), its lot is bigger than 19% of them (3,870 ft² against a typical 0.17 ac) and it is newer than 8% of them (1873 against a typical 1920). Measured against all of Middlesex County, it is worth more than almost all 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 31 Ash St, Cambridge, MA?

The 2025 property tax bill for 31 Ash St, Cambridge, MA was $27,790. The county assessed it at $4,376,300.

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