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Duplex (2 Units, Any Combination)Residential
Last sold for $640,000 on Jun 26, 2019

21 ROCK AVE

SWAMPSCOTT, MA 01907
4
Beds
3 / 1
Baths
2,371 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1867
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
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.$640,000 · Jun 26, 2019
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.$480,000
MSA LENDING LLC · P · recorded Jun 26, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,781 (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.$678,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$275,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$402,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$661,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyEssex
Lot (acres)The size of the land the home sits on, from county records.0.21
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
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(11)

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
Swampscott High SchoolA
High · Grades 9–12 · 0.7 mi
M
Swampscott Middle SchoolC+
Middle · Grades 5–8 · 1.0 mi
E
Swampscott Elementary SchoolC+
Elementary · Grades KG–4 · 1.2 mi

District: Swampscott School District

Neighborhood · ZIP 01907These 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.62
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.81

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.15,022
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,395 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$135,474
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$175,738
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%

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 Rock Ave 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 70% of homes in Swampscott 01907
  • Older than 97% of homes in Swampscott 01907

How it measures up in Swampscott 01907

The dot is this home. The mark in the middle is the typical home in Swampscott 01907.

Living area2,371 ft²
SmallerTypical 1,840 ft²Bigger

Bigger than 70% of homes nearby

Lot size0.21 ac
SmallerTypical 0.19 acBigger

Bigger than 56% of homes nearby

Year built1867
OlderTypical 1937Newer

Newer than 3% of homes nearby

How 21 Rock Ave ranks against every home in each area.
MeasureThis homeSwampscott 01907Essex County
Living areabigger than2,371 ft²70% of homes70% of homes
Lot sizebigger than0.21 ac56% of homes40% of homes
Year builtnewer than18673% of homes5% of homes

About 21 Rock Ave

When did 21 Rock Ave, Swampscott, MA last sell?

21 Rock Ave, Swampscott, MA last sold on Jun 26, 2019 for $640,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Rock Ave, Swampscott, MA?

21 Rock Ave, Swampscott, MA has 4 bedrooms, 3 bathrooms, 2,371 square feet of living space and a 0.21-acre lot.

When was 21 Rock Ave, Swampscott, MA built?

21 Rock Ave, Swampscott, MA was built in 1867, making it 159 years old. It is a conventional home. The building has 2 stories.

What schools serve 21 Rock Ave, Swampscott, MA?

21 Rock Ave, Swampscott, MA is assigned to Swampscott High School (high), rated A; Swampscott Middle School (middle), rated C+; Swampscott Elementary School (elementary), rated C+. All sit in Swampscott School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rock Ave, Swampscott, MA compare to other homes in Swampscott 01907?

Among the 5,167 homes in Swampscott 01907, it is bigger than 70% of them (2,371 ft² against a typical 1,840 ft²), its lot is bigger than 56% of them (0.21 ac against a typical 0.19 ac) and it is newer than 3% of them (1867 against a typical 1937). 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 Rock Ave, Swampscott, MA?

The 2025 property tax bill for 21 Rock Ave, Swampscott, MA was $7,781. The county assessed it at $678,400.

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Assigned schools

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