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Single Family ResidenceResidential
$1,488,860$602 / 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 75How 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

3 MOSTYN ST

SWAMPSCOTT, MA 01907
3
Beds
2.5
Baths
2,473 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1925
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.

Valuation

$1.5M
$1.1M low$1.9M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,435 (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.$1,119,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$462,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$657,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,044,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,183,509

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyESSEX
Lot (acres)The size of the land the home sits on, from county records.0.25
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 With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(9)

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
Swampscott Elementary SchoolB
Elementary · Grades KG–4 · 0.7 mi
M
Swampscott Middle SchoolB
Middle · Grades 5–8 · 0.9 mi
H
Swampscott High SchoolB+
High · Grades 9–12 · 1.7 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%

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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

3 Mostyn 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 95% of homes in Essex County
  • Costs more per square foot than 91% of homes in Essex County
  • Bigger than 73% of homes in Swampscott 01907
  • Older than 68% of homes in Essex County

What homes are worth in Swampscott 01907

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

This home
$355K$2.7M

This home is worth more than 89% 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.

Estimated value$1,488,860
CheaperTypical $822,393Pricier

Pricier than 89% of homes nearby

Price per ft²$602
CheaperTypical $465Pricier

Pricier than 89% of homes nearby

Living area2,473 ft²
SmallerTypical 1,837 ft²Bigger

Bigger than 73% of homes nearby

Lot size0.25 ac
SmallerTypical 0.19 acBigger

Bigger than 64% of homes nearby

Year built1925
OlderTypical 1936Newer

Newer than 41% of homes nearby

How 3 Mostyn St ranks against every home in each area.
MeasureThis homeSwampscott 01907Essex County
Estimated valuepricier than$1,488,86089% of homes95% of homes
Price per ft²pricier than$60289% of homes91% of homes
Living areabigger than2,473 ft²73% of homes72% of homes
Lot sizebigger than0.25 ac64% of homes48% of homes
Year builtnewer than192541% of homes32% of homes

About 3 Mostyn St

How much is 3 Mostyn St, Swampscott, MA worth?

The TopHap Estimate for 3 Mostyn St, Swampscott, MA is $1,488,860 as of Sep 24, 2026. The likely range is $1,117,501 to $1,860,219. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3 Mostyn St, Swampscott, MA last sell?

3 Mostyn St, Swampscott, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3 Mostyn St, Swampscott, MA?

3 Mostyn St, Swampscott, MA has 3 bedrooms, 2.5 bathrooms, 2,473 square feet of living space and a 0.25-acre lot.

When was 3 Mostyn St, Swampscott, MA built?

3 Mostyn St, Swampscott, MA was built in 1925, making it 101 years old. The building has 2 stories.

What schools serve 3 Mostyn St, Swampscott, MA?

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

How does 3 Mostyn St, Swampscott, MA compare to other homes in Swampscott 01907?

Among the 5,167 homes in Swampscott 01907, it is worth more than 89% of them ($1,488,860 against a typical $822,393), its price per square foot is higher than 89% of them ($602 against a typical $465), it is bigger than 73% of them (2,473 ft² against a typical 1,837 ft²), its lot is bigger than 64% of them (0.25 ac against a typical 0.19 ac) and it is newer than 41% of them (1925 against a typical 1936). Measured against all of Essex County, it is worth more than 95% 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 3 Mostyn St, Swampscott, MA?

The 2026 property tax bill for 3 Mostyn St, Swampscott, MA was $13,435. The county assessed it at $1,119,600.

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