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Office BuildingCommercial
Last sold for $54,800,180 on Sep 1, 2021

260 ARSENAL PL

WATERTOWN, MA 02472
6 / 6
Baths
95,596 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.
4.89 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$54,800,180 · Sep 1, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$486,450 (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.$21,307,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$8,810,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$12,496,900

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.35
1
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.
58
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
84
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.
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.Office Building
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.1975
Lot (acres)The size of the land the home sits on, from county records.4.88
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.Roll Tar & Gravel
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
GarageWhether the property has a garage, and details like whether it is attached to the home.No Garage
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
Hosmer Elementary SchoolB+
Elementary · Grades PK–5 · 0.3 mi
M
Watertown Middle SchoolB-
Middle · Grades 6–8 · 1.1 mi
H
Watertown High SchoolB-
High · Grades 9–12 · 1.2 mi

District: Watertown School District

Neighborhood · ZIP 02472These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
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.35,928
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,689 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,227
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,103
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%

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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

260 Arsenal Pl 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.

  • Among the largest homes in East Watertown
  • Among the largest lots in East Watertown
  • Newer than 75% of homes in East Watertown

How it measures up in Watertown 02472

The dot is this home. The mark in the middle is the typical home in Watertown 02472.

Living area95,596 ft²
SmallerTypical 1,726 ft²Bigger

Bigger than almost all homes nearby

Lot size4.89 ac
SmallerTypical 0.14 acBigger

Bigger than 95% of homes nearby

Year built1930
OlderTypical 1930Newer

Newer than 55% of homes nearby

How 260 Arsenal Pl ranks against every home in each area.
MeasureThis homeEast WatertownWatertown 02472Middlesex County
Living areabigger than95,596 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than4.89 acalmost all homes95% of homes94% of homes
Year builtnewer than193075% of homes55% of homes33% of homes

About 260 Arsenal Pl

When did 260 Arsenal Pl, Watertown, MA last sell?

260 Arsenal Pl, Watertown, MA last sold on Sep 1, 2021 for $54,800,180, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 260 Arsenal Pl, Watertown, MA?

260 Arsenal Pl, Watertown, MA has 6 bathrooms, 95,596 square feet of living space and a 4.88-acre lot.

When was 260 Arsenal Pl, Watertown, MA built?

260 Arsenal Pl, Watertown, MA was built in 1930, making it 96 years old. The building has 2 stories.

What schools serve 260 Arsenal Pl, Watertown, MA?

260 Arsenal Pl, Watertown, MA is assigned to Hosmer Elementary School (elementary), rated B+; Watertown Middle School (middle), rated B-; Watertown High School (high), rated B-. All sit in Watertown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 260 Arsenal Pl, Watertown, MA compare to other homes in Watertown 02472?

Among the 10,041 homes in Watertown 02472, it is bigger than almost all of them (95,596 ft² against a typical 1,726 ft²), its lot is bigger than 95% of them (4.89 ac against a typical 0.14 ac) and it is newer than 55% of them (1930 against a typical 1930). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 260 Arsenal Pl, Watertown, MA?

The 2025 property tax bill for 260 Arsenal Pl, Watertown, MA was $486,450. The county assessed it at $21,307,500.

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