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CondominiumResidential
$1,405,229$763 / 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 Oct 21, 2026
Last sold for $1,250,000 on Mar 5, 2021

9 MONMOUTH ST

SOMERVILLE, MA 02143
Building report
3
Beds
2.5
Baths
1,842 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1870
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

$1.4M
$1.4M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,250,000 · Mar 5, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,337 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,396,800 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,396,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,362,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,326,260

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Victorian
CountyMIDDLESEX
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(2)

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
Somerville High SchoolC
High · Grades 9–12 · 0.5 mi
E
John F KennedyA
Elementary · Grades PK–8 · 0.6 mi

District: Somerville School District

Neighborhood · ZIP 02143These 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 100.75

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.6%
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.26,484
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.17,570 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,148
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$143,076
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

9 Monmouth 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 88% of homes in Somerville 02143
  • Costs more per square foot than 91% of homes in Middlesex County
  • Has a bigger lot than 84% of homes in Spring Hill
  • Older than 98% of homes in Spring Hill

What homes are worth in Somerville 02143

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

This home
$420K$2M

This home is worth more than 88% of homes in Somerville 02143.

How it measures up in Somerville 02143

The dot is this home. The mark in the middle is the typical home in Somerville 02143.

Estimated value$1,405,229
CheaperTypical $886,020Pricier

Pricier than 88% of homes nearby

Price per ft²$763
CheaperTypical $761Pricier

Pricier than 51% of homes nearby

Living area1,842 ft²
SmallerTypical 1,750 ft²Bigger

Bigger than 53% of homes nearby

Lot size0.18 ac
SmallerTypical 4,138 ft²Bigger

Bigger than 76% of homes nearby

Year built1870
OlderTypical 1900Newer

Newer than 3% of homes nearby

How 9 Monmouth St ranks against every home in each area.
MeasureThis homeSpring HillSomerville 02143Middlesex County
Estimated valuepricier than$1,405,22987% of homes88% of homes87% of homes
Price per ft²pricier than$76364% of homes51% of homes91% of homes
Living areabigger than1,842 ft²47% of homes53% of homes51% of homes
Lot sizebigger than0.18 ac84% of homes76% of homes31% of homes
Year builtnewer than18702% of homes3% of homes2% of homes

About 9 Monmouth St

How much is 9 Monmouth St, Somerville, MA worth?

The TopHap Estimate for 9 Monmouth St, Somerville, MA is $1,405,229 as of Oct 21, 2026. The likely range is $1,362,492 to $1,447,966. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9 Monmouth St, Somerville, MA last sell?

9 Monmouth St, Somerville, MA last sold on Mar 5, 2021 for $1,250,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 9 Monmouth St, Somerville, MA?

9 Monmouth St, Somerville, MA has 3 bedrooms, 2.5 bathrooms and 1,842 square feet of living space.

When was 9 Monmouth St, Somerville, MA built?

9 Monmouth St, Somerville, MA was built in 1870, making it 156 years old. It is a victorian home. The building has 2 stories.

What schools serve 9 Monmouth St, Somerville, MA?

9 Monmouth St, Somerville, MA is assigned to Somerville High School (high), rated C; John F Kennedy (elementary), rated A. All sit in Somerville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9 Monmouth St, Somerville, MA compare to other homes in Somerville 02143?

Among the 5,955 homes in Somerville 02143, it is worth more than 88% of them ($1,405,229 against a typical $886,020), its price per square foot is higher than 51% of them ($763 against a typical $761), it is bigger than 53% of them (1,842 ft² against a typical 1,750 ft²), its lot is bigger than 76% of them (0.18 ac against a typical 4,138 ft²) and it is newer than 3% of them (1870 against a typical 1900). 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 9 Monmouth St, Somerville, MA?

The 2026 property tax bill for 9 Monmouth St, Somerville, MA was $15,337. The county assessed it at $1,396,800.

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