Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,087,529$295 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $960,000 on Oct 15, 2020

21 SCHOOL ST

HOPKINTON, MA 01748
4
Beds
3.5
Baths
3,685 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.
2.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1979
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.1M
$1M low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$960,000 · Oct 15, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,873 (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.$913,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$392,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$520,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$874,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,119,971

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.2.20
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
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(6)

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
Hopkinton High SchoolA+
High · Grades 9–12 · 2.8 mi
M
Hopkinton Middle SchoolA+
Middle · Grades 6–8 · 2.8 mi
E
Marathon Elementary School
Elementary · Grades PK–1 · 3.1 mi

District: Hopkinton School District

Neighborhood · ZIP 01748These 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.36
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.66

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.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.19,208
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.687 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$189,861
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$255,819
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

Owner Tools

Do you own this home?
Claim this home

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 School 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 more than 75% of homes in Middlesex County
  • Costs less per square foot than 96% of homes in Hopkinton 01748
  • Bigger than 93% of homes in Middlesex County
  • Has a bigger lot than 90% of homes in Middlesex County
  • Newer than 71% of homes in Middlesex County

What homes are worth in Hopkinton 01748

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

This home
$437K$2M

This home is worth more than 64% of homes in Hopkinton 01748.

How it measures up in Hopkinton 01748

The dot is this home. The mark in the middle is the typical home in Hopkinton 01748.

Estimated value$1,087,529
CheaperTypical $969,397Pricier

Pricier than 64% of homes nearby

Price per ft²$295
CheaperTypical $424Pricier

Pricier than 4% of homes nearby

Living area3,685 ft²
SmallerTypical 2,330 ft²Bigger

Bigger than 89% of homes nearby

Lot size2.2 ac
SmallerTypical 1.23 acBigger

Bigger than 72% of homes nearby

Year built1979
OlderTypical 1992Newer

Newer than 31% of homes nearby

How 21 School St ranks against every home in each area.
MeasureThis homeHopkinton 01748Middlesex County
Estimated valuepricier than$1,087,52964% of homes75% of homes
Price per ft²pricier than$2954% of homes8% of homes
Living areabigger than3,685 ft²89% of homes93% of homes
Lot sizebigger than2.2 ac72% of homes90% of homes
Year builtnewer than197931% of homes71% of homes

About 21 School St

How much is 21 School St, Hopkinton, MA worth?

The TopHap Estimate for 21 School St, Hopkinton, MA is $1,087,529 as of Sep 24, 2026. The likely range is $1,024,496 to $1,150,562. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 School St, Hopkinton, MA last sell?

21 School St, Hopkinton, MA last sold on Oct 15, 2020 for $960,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 School St, Hopkinton, MA?

21 School St, Hopkinton, MA has 4 bedrooms, 3.5 bathrooms, 3,685 square feet of living space and a 2.20-acre lot.

When was 21 School St, Hopkinton, MA built?

21 School St, Hopkinton, MA was built in 1979, making it 47 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 School St, Hopkinton, MA?

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

How does 21 School St, Hopkinton, MA compare to other homes in Hopkinton 01748?

Among the 6,096 homes in Hopkinton 01748, it is worth more than 64% of them ($1,087,529 against a typical $969,397), its price per square foot is higher than 4% of them ($295 against a typical $424), it is bigger than 89% of them (3,685 ft² against a typical 2,330 ft²), its lot is bigger than 72% of them (2.2 ac against a typical 1.23 ac) and it is newer than 31% of them (1979 against a typical 1992). Measured against all of Middlesex County, it is worth more than 75% 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 School St, Hopkinton, MA?

The 2026 property tax bill for 21 School St, Hopkinton, MA was $12,873. The county assessed it at $913,000.

More homes on School St

Closest homes

More homes in Hopkinton 01748

Assigned schools

Explore the area

See this home in context

Open 21 School St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map