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Duplex (2 Units, Any Combination)Residential
Last sold for $220,000 on May 22, 1992

12 SAINT MARYS ST

WATERTOWN, MA 02472
5
Beds
3
Baths
3,029 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1926
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
12
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$220,000 · May 22, 1992

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,117 (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.$1,075,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$519,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$555,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,046,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,135,023

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Duplex (2 Units, Any Combination)
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.11
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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 · 0.9 mi
H
Watertown High SchoolC+
High · Grades 9–12 · 1.3 mi
M
Watertown Middle SchoolB-
Middle · Grades 6–8 · 2.0 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

12 Saint Marys 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.

  • Bigger than 90% of homes in Watertown 02472
  • Has a smaller lot than 86% of homes in Middlesex County
  • Older than 71% of homes in Middlesex County

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 area3,029 ft²
SmallerTypical 1,728 ft²Bigger

Bigger than 90% of homes nearby

Lot size0.11 ac
SmallerTypical 0.14 acBigger

Bigger than 23% of homes nearby

Year built1926
OlderTypical 1930Newer

Newer than 45% of homes nearby

How 12 Saint Marys St ranks against every home in each area.
MeasureThis homeEast WatertownWatertown 02472Middlesex County
Living areabigger than3,029 ft²85% of homes90% of homes86% of homes
Lot sizebigger than0.11 ac26% of homes23% of homes14% of homes
Year builtnewer than192667% of homes45% of homes29% of homes

About 12 Saint Marys St

When did 12 Saint Marys St, Watertown, MA last sell?

12 Saint Marys St, Watertown, MA last sold on May 22, 1992 for $220,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 12 Saint Marys St, Watertown, MA?

12 Saint Marys St, Watertown, MA has 5 bedrooms, 3 bathrooms, 3,029 square feet of living space and a 0.11-acre lot.

When was 12 Saint Marys St, Watertown, MA built?

12 Saint Marys St, Watertown, MA was built in 1926, making it 100 years old. The building has 3 stories.

What schools serve 12 Saint Marys St, Watertown, MA?

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

How does 12 Saint Marys St, Watertown, MA compare to other homes in Watertown 02472?

Among the 10,041 homes in Watertown 02472, it is bigger than 90% of them (3,029 ft² against a typical 1,728 ft²), its lot is bigger than 23% of them (0.11 ac against a typical 0.14 ac) and it is newer than 45% of them (1926 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 12 Saint Marys St, Watertown, MA?

The 2026 property tax bill for 12 Saint Marys St, Watertown, MA was $13,117. The county assessed it at $1,075,200.

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