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Duplex (2 Units, Any Combination)Residential
Last sold for $220,000 on Oct 28, 1988

21 WALNUT ST

NATICK, MA 01760
4
Beds
2
Baths
2,426 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.
0.16 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.
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.

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 · Oct 28, 1988

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,642 (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.$722,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$376,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$346,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$680,300

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
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.2010
Lot (acres)The size of the land the home sits on, from county records.0.16
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(4)

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.

H
Natick High SchoolA
High · Grades 9–12 · 1.0 mi
E
Lilja Elementary SchoolA-
Elementary · Grades KG–4 · 1.2 mi
M
Wilson Middle SchoolA-
Middle · Grades 5–8 · 1.2 mi

District: Natick School District

Neighborhood · ZIP 01760These 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.79
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
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.37,721
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,380 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,738
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$174,842
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

21 Walnut 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 75% of homes in Natick 01760
  • Has a smaller lot than 89% of homes in Natick 01760
  • Older than 83% of homes in Natick 01760

How it measures up in Natick 01760

The dot is this home. The mark in the middle is the typical home in Natick 01760.

Living area2,426 ft²
SmallerTypical 1,705 ft²Bigger

Bigger than 75% of homes nearby

Lot size0.16 ac
SmallerTypical 0.3 acBigger

Bigger than 11% of homes nearby

Year built1926
OlderTypical 1955Newer

Newer than 17% of homes nearby

How 21 Walnut St ranks against every home in each area.
MeasureThis homeNatick 01760Middlesex County
Living areabigger than2,426 ft²75% of homes71% of homes
Lot sizebigger than0.16 ac11% of homes28% of homes
Year builtnewer than192617% of homes29% of homes

About 21 Walnut St

When did 21 Walnut St, Natick, MA last sell?

21 Walnut St, Natick, MA last sold on Oct 28, 1988 for $220,000, according to the county's recorded deed.

How big is 21 Walnut St, Natick, MA?

21 Walnut St, Natick, MA has 4 bedrooms, 2 bathrooms, 2,426 square feet of living space and a 0.16-acre lot.

When was 21 Walnut St, Natick, MA built?

21 Walnut St, Natick, MA was built in 1926, making it 100 years old. The building has 2 stories.

What schools serve 21 Walnut St, Natick, MA?

21 Walnut St, Natick, MA is assigned to Natick High School (high), rated A; Lilja Elementary School (elementary), rated A-; Wilson Middle School (middle), rated A-. All sit in Natick School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Walnut St, Natick, MA compare to other homes in Natick 01760?

Among the 12,050 homes in Natick 01760, it is bigger than 75% of them (2,426 ft² against a typical 1,705 ft²), its lot is bigger than 11% of them (0.16 ac against a typical 0.3 ac) and it is newer than 17% of them (1926 against a typical 1955). 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 Walnut St, Natick, MA?

The 2025 property tax bill for 21 Walnut St, Natick, MA was $8,642. The county assessed it at $722,600.

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