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CondominiumResidential
$1,212,479$576 / 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 94How 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 $1,075,000 on Jun 28, 2019

42 HARLOW ST

ARLINGTON, MA 02474
4
Beds
2
Baths
2,104 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1914
Year BuiltThe year the home was originally built, according to county records.
1
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

$1.2M
$1.1M low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,075,000 · Jun 28, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,590 (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.$1,179,900 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,175,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,134,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,123,019

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.Condo/Apartment
CountyMIDDLESEX
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2019
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.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Thompson Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
H
Arlington High SchoolA+
High · Grades 9–12 · 1.1 mi
M
Ottoson Middle SchoolA+
Middle · Grades 7–8 · 1.8 mi

District: Arlington School District

Neighborhood · ZIP 02474These 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.93
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 100.79

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.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.28,960
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,757 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$135,066
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$157,393
Average tempThe average temperature here across a full year.49°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

42 Harlow 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 81% of homes in Middlesex County
  • Costs more per square foot than 73% of homes in Middlesex County
  • Has a smaller lot than 74% of homes in Middlesex County
  • Older than 86% of homes in Arlington 02474

What homes are worth in Arlington 02474

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

This home
$335K$2.2M

This home is worth more than 70% of homes in Arlington 02474.

How it measures up in Arlington 02474

The dot is this home. The mark in the middle is the typical home in Arlington 02474.

Estimated value$1,212,479
CheaperTypical $1,018,540Pricier

Pricier than 70% of homes nearby

Price per ft²$576
CheaperTypical $581Pricier

Pricier than 48% of homes nearby

Living area2,104 ft²
SmallerTypical 1,975 ft²Bigger

Bigger than 56% of homes nearby

Lot size0.16 ac
SmallerTypical 0.14 acBigger

Bigger than 61% of homes nearby

Year built1914
OlderTypical 1934Newer

Newer than 14% of homes nearby

How 42 Harlow St ranks against every home in each area.
MeasureThis homeArlington 02474Middlesex County
Estimated valuepricier than$1,212,47970% of homes81% of homes
Price per ft²pricier than$57648% of homes73% of homes
Living areabigger than2,104 ft²56% of homes61% of homes
Lot sizebigger than0.16 ac61% of homes26% of homes
Year builtnewer than191414% of homes20% of homes

About 42 Harlow St

How much is 42 Harlow St, Arlington, MA worth?

The TopHap Estimate for 42 Harlow St, Arlington, MA is $1,212,479 as of Oct 21, 2026. The likely range is $1,145,064 to $1,279,894. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 42 Harlow St, Arlington, MA last sell?

42 Harlow St, Arlington, MA last sold on Jun 28, 2019 for $1,075,000, according to the county's recorded deed.

How big is 42 Harlow St, Arlington, MA?

42 Harlow St, Arlington, MA has 4 bedrooms, 2 bathrooms and 2,104 square feet of living space.

When was 42 Harlow St, Arlington, MA built?

42 Harlow St, Arlington, MA was built in 1914, making it 112 years old. It is a condo/apartment home. The building has 1 story.

What schools serve 42 Harlow St, Arlington, MA?

42 Harlow St, Arlington, MA is assigned to Thompson Elementary School (elementary), rated A; Arlington High School (high), rated A+; Ottoson Middle School (middle), rated A+. All sit in Arlington School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 42 Harlow St, Arlington, MA compare to other homes in Arlington 02474?

Among the 8,570 homes in Arlington 02474, it is worth more than 70% of them ($1,212,479 against a typical $1,018,540), its price per square foot is higher than 48% of them ($576 against a typical $581), it is bigger than 56% of them (2,104 ft² against a typical 1,975 ft²), its lot is bigger than 61% of them (0.16 ac against a typical 0.14 ac) and it is newer than 14% of them (1914 against a typical 1934). Measured against all of Middlesex County, it is worth more than 81% 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 42 Harlow St, Arlington, MA?

The 2026 property tax bill for 42 Harlow St, Arlington, MA was $12,590. The county assessed it at $1,179,900.

More homes on Harlow St

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