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Duplex (2 Units, Any Combination)Residential

21 FRANCIS ST

WATERTOWN, MA 02472
4
Beds
2
Baths
2,807 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.
0.13 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.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,128 (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.$994,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$526,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$467,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$968,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,053,866

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.10 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.0.13
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
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
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

21 Francis 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 85% of homes in Watertown 02472
  • Has a smaller lot than 80% of homes in Middlesex County
  • Older than 72% 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 area2,807 ft²
SmallerTypical 1,728 ft²Bigger

Bigger than 85% of homes nearby

Lot size0.13 ac
SmallerTypical 0.14 acBigger

Bigger than 43% of homes nearby

Year built1925
OlderTypical 1930Newer

Newer than 44% of homes nearby

How 21 Francis St ranks against every home in each area.
MeasureThis homeEast WatertownWatertown 02472Middlesex County
Living areabigger than2,807 ft²78% of homes85% of homes82% of homes
Lot sizebigger than0.13 ac46% of homes43% of homes20% of homes
Year builtnewer than192565% of homes44% of homes28% of homes

About 21 Francis St

When did 21 Francis St, Watertown, MA last sell?

21 Francis St, Watertown, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Francis St, Watertown, MA?

21 Francis St, Watertown, MA has 4 bedrooms, 2 bathrooms, 2,807 square feet of living space and a 0.13-acre lot.

When was 21 Francis St, Watertown, MA built?

21 Francis St, Watertown, MA was built in 1925, making it 101 years old. The building has 2 stories.

What schools serve 21 Francis St, Watertown, MA?

21 Francis 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 21 Francis St, Watertown, MA compare to other homes in Watertown 02472?

Among the 10,041 homes in Watertown 02472, it is bigger than 85% of them (2,807 ft² against a typical 1,728 ft²), its lot is bigger than 43% of them (0.13 ac against a typical 0.14 ac) and it is newer than 44% of them (1925 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 21 Francis St, Watertown, MA?

The 2026 property tax bill for 21 Francis St, Watertown, MA was $12,128. The county assessed it at $994,100.

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