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Single Family ResidenceResidential
$523,562$216 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 84How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $60,000 on Oct 25, 1995

21 SOUTH ST

SHIRLEY, MA 01464
4
Beds
3 / 1
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.
1.09 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
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.

Valuation

$524K
$439K low$608K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$60,000 · Oct 25, 1995

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,351 (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.$566,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$133,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$433,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$523,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMiddlesex
Lot (acres)The size of the land the home sits on, from county records.1.09
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.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

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.

Foreclosure Filings(1)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Lura A White Elementary SchoolB-
Elementary · Grades KG–5 · 0.1 mi
M
Ayer Shirley Regional Middle SchoolB
Middle · Grades 6–8 · 0.9 mi
H
Ayer Shirley Regional High SchoolB
High · Grades 9–12 · 4.5 mi

District: Ayer-Shirley School District

Neighborhood · ZIP 01464These 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.89
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.74

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.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.7,097
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.449 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$120,824
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$144,771
Average tempThe average temperature here across a full year.47°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 South 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.

  • Worth less than 83% of homes in Middlesex County
  • Among the lowest price per square foot in Middlesex County
  • Bigger than 72% of homes in Shirley 01464
  • Has a bigger lot than 82% of homes in Middlesex County
  • Older than 88% of homes in Shirley 01464

What homes are worth in Shirley 01464

Each bar is how many homes fall in that price range. The marker is this home.

This home
$297K$829K

This home is worth more than 55% of homes in Shirley 01464.

How it measures up in Shirley 01464

The dot is this home. The mark in the middle is the typical home in Shirley 01464.

Estimated value$523,562
CheaperTypical $508,277Pricier

Pricier than 55% of homes nearby

Price per ft²$216
CheaperTypical $265Pricier

Pricier than 19% of homes nearby

Living area2,426 ft²
SmallerTypical 1,940 ft²Bigger

Bigger than 72% of homes nearby

Lot size1.09 ac
SmallerTypical 0.92 acBigger

Bigger than 61% of homes nearby

Year built1900
OlderTypical 1985Newer

Newer than 12% of homes nearby

How 21 South St ranks against every home in each area.
MeasureThis homeShirley 01464Middlesex County
Estimated valuepricier than$523,56255% of homes17% of homes
Price per ft²pricier than$21619% of homesalmost no homes
Living areabigger than2,426 ft²72% of homes71% of homes
Lot sizebigger than1.09 ac61% of homes82% of homes
Year builtnewer than190012% of homes15% of homes

About 21 South St

How much is 21 South St, Shirley, MA worth?

The TopHap Estimate for 21 South St, Shirley, MA is $523,562 as of Aug 30, 2026. The likely range is $439,437 to $607,687. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 South St, Shirley, MA last sell?

21 South St, Shirley, MA last sold on Oct 25, 1995 for $60,000, according to the county's recorded deed.

How big is 21 South St, Shirley, MA?

21 South St, Shirley, MA has 4 bedrooms, 3 bathrooms, 2,426 square feet of living space and a 1.09-acre lot.

When was 21 South St, Shirley, MA built?

21 South St, Shirley, MA was built in 1900, making it 126 years old. The building has 2 stories.

What schools serve 21 South St, Shirley, MA?

21 South St, Shirley, MA is assigned to Lura A White Elementary School (elementary), rated B-; Ayer Shirley Regional Middle School (middle), rated B; Ayer Shirley Regional High School (high), rated B. All sit in Ayer-Shirley School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 South St, Shirley, MA compare to other homes in Shirley 01464?

Among the 2,116 homes in Shirley 01464, it is worth more than 55% of them ($523,562 against a typical $508,277), its price per square foot is higher than 19% of them ($216 against a typical $265), it is bigger than 72% of them (2,426 ft² against a typical 1,940 ft²), its lot is bigger than 61% of them (1.09 ac against a typical 0.92 ac) and it is newer than 12% of them (1900 against a typical 1985). Measured against all of Middlesex County, it is worth more than 17% of homes there. 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 South St, Shirley, MA?

The 2025 property tax bill for 21 South St, Shirley, MA was $7,351. The county assessed it at $566,800.

More homes on South St

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Assigned schools

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