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CondominiumResidential
$772,099$1,049 / 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 $775,000 on Sep 8, 2021

9 COOPER ST

BOSTON, MA 02113
Building report
2
Beds
1
Baths
736 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.
945 ft²
Lot SizeThe size of the land the home sits on, from county records.
2016
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$772K
$714K low$831K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$775,000 · Sep 8, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,669 (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.$748,600 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$748,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$893,285

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.60 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.28%
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
CountySUFFOLK
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(1)

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
Eliot K-8 SchoolA-
Elementary · Grades PK–8 · 0.2 mi
H
Charlestown High SchoolD+
High · Grades 9–12 · 1.1 mi

District: Boston School District

Neighborhood · ZIP 02113These 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.139
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
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.50%
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.1.4%
PopulationHow many people live in this area.6,619
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.67,574 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$109,491
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$127,316
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

9 Cooper 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 68% of homes in Boston 02113
  • Costs more per square foot than 80% of homes in Suffolk County
  • Smaller than 87% of homes in Suffolk County
  • Has a smaller lot than 78% of homes in Suffolk County
  • Among the newest homes in North End

What homes are worth in Boston 02113

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

This home
$395K$1.9M

This home is worth more than 68% of homes in Boston 02113.

How it measures up in Boston 02113

The dot is this home. The mark in the middle is the typical home in Boston 02113.

Estimated value$772,099
CheaperTypical $671,716Pricier

Pricier than 68% of homes nearby

Price per ft²$1049
CheaperTypical $1069Pricier

Pricier than 45% of homes nearby

Living area736 ft²
SmallerTypical 779 ft²Bigger

Bigger than 47% of homes nearby

Lot size945 ft²
SmallerTypical 741 ft²Bigger

Bigger than 71% of homes nearby

Year built2016
OlderTypical 1900Newer

Newer than almost all homes nearby

How 9 Cooper St ranks against every home in each area.
MeasureThis homeNorth EndBoston 02113Suffolk County
Estimated valuepricier than$772,09944% of homes68% of homes58% of homes
Price per ft²pricier than$104939% of homes45% of homes80% of homes
Living areabigger than736 ft²34% of homes47% of homes13% of homes
Lot sizebigger than945 ft²58% of homes71% of homes22% of homes
Year builtnewer than2016almost all homesalmost all homes94% of homes

About 9 Cooper St

How much is 9 Cooper St, Boston, MA worth?

The TopHap Estimate for 9 Cooper St, Boston, MA is $772,099 as of Sep 24, 2026. The likely range is $713,517 to $830,681. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9 Cooper St, Boston, MA last sell?

9 Cooper St, Boston, MA last sold on Sep 8, 2021 for $775,000, according to the county's recorded deed.

How big is 9 Cooper St, Boston, MA?

9 Cooper St, Boston, MA has 2 bedrooms, 1 bathrooms and 736 square feet of living space.

When was 9 Cooper St, Boston, MA built?

9 Cooper St, Boston, MA was built in 2016, making it 10 years old. The building has 1 story.

What schools serve 9 Cooper St, Boston, MA?

9 Cooper St, Boston, MA is assigned to Eliot K-8 School (elementary), rated A-; Charlestown High School (high), rated D+. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9 Cooper St, Boston, MA compare to other homes in Boston 02113?

Among the 1,750 homes in Boston 02113, it is worth more than 68% of them ($772,099 against a typical $671,716), its price per square foot is higher than 45% of them ($1049 against a typical $1069), it is bigger than 47% of them (736 ft² against a typical 779 ft²), its lot is bigger than 71% of them (945 ft² against a typical 741 ft²) and it is newer than almost all of them (2016 against a typical 1900). Measured against all of Suffolk County, it is worth more than 58% 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 9 Cooper St, Boston, MA?

The 2025 property tax bill for 9 Cooper St, Boston, MA was $8,669. The county assessed it at $748,600.

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