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CondominiumResidential
$647,154$662 / 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 90How 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 $650,000 on May 22, 2026

166 FRANKLIN ST

ARLINGTON, MA 02474
Building report
2
Beds
1
Baths
977 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.
3,633 ft²
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$647K
$579K low$715K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$650,000 · May 22, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,189 (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.$580,000 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$580,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$558,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$610,545

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.37
6
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
55
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
93
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

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
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.Steam
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(1)

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
Thompson Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
H
Arlington High SchoolA+
High · Grades 9–12 · 0.9 mi
M
Ottoson Middle SchoolA+
Middle · Grades 7–8 · 1.6 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

166 Franklin 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 less than 87% of homes in Arlington 02474
  • Costs more per square foot than 84% of homes in Middlesex County
  • Smaller than 90% of homes in Arlington 02474
  • Has a smaller lot than 97% of homes in Arlington 02474
  • Older than 96% 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
$339K$2M

This home is worth more than 13% 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$647,154
CheaperTypical $1,016,543Pricier

Pricier than 13% of homes nearby

Price per ft²$662
CheaperTypical $582Pricier

Pricier than 76% of homes nearby

Living area977 ft²
SmallerTypical 1,984 ft²Bigger

Bigger than 10% of homes nearby

Lot size3,633 ft²
SmallerTypical 0.14 acBigger

Bigger than 3% of homes nearby

Year built1890
OlderTypical 1933Newer

Newer than 4% of homes nearby

How 166 Franklin St ranks against every home in each area.
MeasureThis homeArlington 02474Middlesex County
Estimated valuepricier than$647,15413% of homes32% of homes
Price per ft²pricier than$66276% of homes84% of homes
Living areabigger than977 ft²10% of homes10% of homes
Lot sizebigger than3,633 ft²3% of homes7% of homes
Year builtnewer than18904% of homes7% of homes

About 166 Franklin St

How much is 166 Franklin St, Arlington, MA worth?

The TopHap Estimate for 166 Franklin St, Arlington, MA is $647,154 as of Oct 21, 2026. The likely range is $579,290 to $715,018. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 166 Franklin St, Arlington, MA last sell?

166 Franklin St, Arlington, MA last sold on May 22, 2026 for $650,000, according to the county's recorded deed.

How big is 166 Franklin St, Arlington, MA?

166 Franklin St, Arlington, MA has 2 bedrooms, 1 bathrooms and 977 square feet of living space.

When was 166 Franklin St, Arlington, MA built?

166 Franklin St, Arlington, MA was built in 1890, making it 136 years old. It is a condo/apartment home.

What schools serve 166 Franklin St, Arlington, MA?

166 Franklin 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 166 Franklin St, Arlington, MA compare to other homes in Arlington 02474?

Among the 8,570 homes in Arlington 02474, it is worth more than 13% of them ($647,154 against a typical $1,016,543), its price per square foot is higher than 76% of them ($662 against a typical $582), it is bigger than 10% of them (977 ft² against a typical 1,984 ft²), its lot is bigger than 3% of them (3,633 ft² against a typical 0.14 ac) and it is newer than 4% of them (1890 against a typical 1933). Measured against all of Middlesex County, it is worth more than 32% 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 166 Franklin St, Arlington, MA?

The 2026 property tax bill for 166 Franklin St, Arlington, MA was $6,189. The county assessed it at $580,000.

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