Skip to content
Skip to content
TopHapOpen in map
Triplex (3 Units, Any Combination)Residential
Last sold for $520,000 on Aug 8, 2012

21 ROSSMORE ST

SOMERVILLE, MA 02143
8
Beds
5 / 1
Baths
2,698 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.
2,330 ft²
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
14
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$520,000 · Aug 8, 2012
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$751,986
DRAPER AND KRAMER MORTGAGE CORP. · R · recorded Mar 15, 2021
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$30,000
WINTHROP FCU

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,001 (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.$1,375,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$522,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$852,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,375,000

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.36 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.26%
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.Triplex (3 Units, Any Combination)
CountyMiddlesex
Lot (acres)The size of the land the home sits on, from county records.0.05
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
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(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.

E
Albert F. Argenziano School at Lincoln ParkA-
Elementary · Grades PK–8 · 0.4 mi
H
Somerville High SchoolB-
High · Grades 9–12 · 0.7 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

21 Rossmore 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.

  • Bigger than 79% of homes in Middlesex County
  • Has a smaller lot than 97% of homes in Middlesex County
  • Older than 80% of homes in Middlesex County

How it measures up in Somerville 02143

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

Living area2,698 ft²
SmallerTypical 1,749 ft²Bigger

Bigger than 75% of homes nearby

Lot size2,330 ft²
SmallerTypical 4,095 ft²Bigger

Bigger than 10% of homes nearby

Year built1910
OlderTypical 1900Newer

Newer than 66% of homes nearby

How 21 Rossmore St ranks against every home in each area.
MeasureThis homeUnion Square / Prospect HillSomerville 02143Middlesex County
Living areabigger than2,698 ft²73% of homes75% of homes79% of homes
Lot sizebigger than2,330 ft²12% of homes10% of homes3% of homes
Year builtnewer than191065% of homes66% of homes20% of homes

About 21 Rossmore St

When did 21 Rossmore St, Somerville, MA last sell?

21 Rossmore St, Somerville, MA last sold on Aug 8, 2012 for $520,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Rossmore St, Somerville, MA?

21 Rossmore St, Somerville, MA has 8 bedrooms, 5 bathrooms, 2,698 square feet of living space and a 0.05-acre lot.

When was 21 Rossmore St, Somerville, MA built?

21 Rossmore St, Somerville, MA was built in 1910, making it 116 years old. The building has 3 stories.

What schools serve 21 Rossmore St, Somerville, MA?

21 Rossmore St, Somerville, MA is assigned to Albert F. Argenziano School at Lincoln Park (elementary), rated A-; Somerville High School (high), rated B-. All sit in Somerville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rossmore St, Somerville, MA compare to other homes in Somerville 02143?

Among the 5,956 homes in Somerville 02143, it is bigger than 75% of them (2,698 ft² against a typical 1,749 ft²), its lot is bigger than 10% of them (2,330 ft² against a typical 4,095 ft²) and it is newer than 66% of them (1910 against a typical 1900). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Rossmore St, Somerville, MA?

The 2025 property tax bill for 21 Rossmore St, Somerville, MA was $15,001. The county assessed it at $1,375,000.

Closest homes

More homes in Somerville 02143

Assigned schools

Explore the area

See this home in context

Open 21 Rossmore 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