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Single Family ResidenceResidential
$4,061,886$1,500 / 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 95How 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 $2,425,000 on May 13, 2016

12 ASH ST

CAMBRIDGE, MA 02138
4
Beds
2.5
Baths
2,708 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.
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1846
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
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

$4.1M
$3.8M low$4.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,425,000 · May 13, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$23,915 (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.$3,766,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,837,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,929,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$4,049,470

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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.10
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.Slate
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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 LatinA-
High · Grades 9–12 · 0.7 mi
E
Maria L. BaldwinA-
Elementary · Grades PK–5 · 0.7 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

12 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 89% of homes in Middlesex County
  • Among the oldest homes in Harvard Square

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
$431K$7.3M

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$4,061,886
CheaperTypical $1,049,477Pricier

Pricier than 92% of homes nearby

Price per ft²$1500
CheaperTypical $981Pricier

Pricier than 91% of homes nearby

Living area2,708 ft²
SmallerTypical 1,319 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.1 ac
SmallerTypical 0.17 acBigger

Bigger than 26% of homes nearby

Year built1846
OlderTypical 1920Newer

Older than almost all homes nearby

How 12 Ash St ranks against every home in each area.
MeasureThis homeHarvard SquareCambridge 02138Middlesex County
Estimated valuepricier than$4,061,88689% of homes92% of homesalmost all homes
Price per ft²pricier than$150064% of homes91% of homesalmost all homes
Living areabigger than2,708 ft²89% of homes81% of homes80% of homes
Lot sizebigger than0.1 ac18% of homes26% of homes11% of homes
Year builtnewer than1846almost no homesalmost no homesalmost no homes

About 12 Ash St

How much is 12 Ash St, Cambridge, MA worth?

The TopHap Estimate for 12 Ash St, Cambridge, MA is $4,061,886 as of Sep 24, 2026. The likely range is $3,847,352 to $4,276,420. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12 Ash St, Cambridge, MA last sell?

12 Ash St, Cambridge, MA last sold on May 13, 2016 for $2,425,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 12 Ash St, Cambridge, MA?

12 Ash St, Cambridge, MA has 4 bedrooms, 2.5 bathrooms, 2,708 square feet of living space and a 0.10-acre lot.

When was 12 Ash St, Cambridge, MA built?

12 Ash St, Cambridge, MA was built in 1846, making it 180 years old. It is a colonial home. The building has 2 stories.

What schools serve 12 Ash St, Cambridge, MA?

12 Ash St, Cambridge, MA is assigned to Cambridge Rindge and Latin (high), rated A-; 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 12 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 ($4,061,886 against a typical $1,049,477), its price per square foot is higher than 91% of them ($1500 against a typical $981), it is bigger than 81% of them (2,708 ft² against a typical 1,319 ft²), its lot is bigger than 26% of them (0.1 ac against a typical 0.17 ac) and it is newer than almost none of them (1846 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 12 Ash St, Cambridge, MA?

The 2025 property tax bill for 12 Ash St, Cambridge, MA was $23,915. The county assessed it at $3,766,100.

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