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Commercial (General)Commercial

421 WATERTOWN ST

NEWTON, MA 02458
4
Beds
2
Baths
4,155 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1880
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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.$6,601 (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.$365,500 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$365,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$823,000

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.Commercial (General)
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
Horace Mann Elementary SchoolA-
Elementary · Grades KG–5 · 0.3 mi
M
F. A. Day Middle SchoolA+
Middle · Grades 6–8 · 0.5 mi
H
Newton North High SchoolA+
High · Grades 9–12 · 1.0 mi

District: Newton School District

Neighborhood · ZIP 02458These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.70

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
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.14,080
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,870 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,714
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$186,633
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

421 Watertown 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 98% of homes in Nonantum
  • Has a bigger lot than 74% of homes in Nonantum
  • Older than 95% of homes in Middlesex County

How it measures up in Newton 02458

The dot is this home. The mark in the middle is the typical home in Newton 02458.

Living area4,155 ft²
SmallerTypical 2,242 ft²Bigger

Bigger than 92% of homes nearby

Lot size0.23 ac
SmallerTypical 0.19 acBigger

Bigger than 62% of homes nearby

Year built1880
OlderTypical 1920Newer

Newer than 17% of homes nearby

How 421 Watertown St ranks against every home in each area.
MeasureThis homeNonantumNewton 02458Middlesex County
Living areabigger than4,155 ft²98% of homes92% of homes96% of homes
Lot sizebigger than0.23 ac74% of homes62% of homes38% of homes
Year builtnewer than188015% of homes17% of homes5% of homes

About 421 Watertown St

When did 421 Watertown St, Newton, MA last sell?

421 Watertown St, Newton, MA last sold on May 19, 2015, according to the county's recorded deed.

How big is 421 Watertown St, Newton, MA?

421 Watertown St, Newton, MA has 4 bedrooms, 2 bathrooms, 4,155 square feet of living space and a 0.23-acre lot.

When was 421 Watertown St, Newton, MA built?

421 Watertown St, Newton, MA was built in 1880, making it 146 years old. The building has 2 stories.

What schools serve 421 Watertown St, Newton, MA?

421 Watertown St, Newton, MA is assigned to Horace Mann Elementary School (elementary), rated A-; F. A. Day Middle School (middle), rated A+; Newton North High School (high), rated A+. All sit in Newton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Watertown St, Newton, MA compare to other homes in Newton 02458?

Among the 3,665 homes in Newton 02458, it is bigger than 92% of them (4,155 ft² against a typical 2,242 ft²), its lot is bigger than 62% of them (0.23 ac against a typical 0.19 ac) and it is newer than 17% of them (1880 against a typical 1920). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 421 Watertown St, Newton, MA?

The 2026 property tax bill for 421 Watertown St, Newton, MA was $6,601. The county assessed it at $365,500.

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