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Single Family ResidenceResidential
$579,316$217 / 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 92How 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

12 THORNTON ST

MENDON, MA 01756
4
Beds
1.5
Baths
2,672 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.
0.87 ac
Lot SizeThe size of the land the home sits on, from county records.
1969
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$579K
$535K low$623K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,907 (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.$520,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$144,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$350,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$477,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$689,225

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.Raised Ranch
CountyWORCESTER
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.1974
Lot (acres)The size of the land the home sits on, from county records.0.86
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.Electric
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(5)

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
Henry P. Clough Elementary SchoolB
Elementary · Grades PK–4 · 1.5 mi
M
Miscoe Hill Middle SchoolB-
Middle · Grades 5–8 · 2.3 mi
H
Nipmuc Regional High SchoolB
High · Grades 9–12 · 4.7 mi

District: Mendon-Upton School District

Neighborhood · ZIP 01756These 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.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.64

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.9%
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.6,409
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.357 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$128,573
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$169,057
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

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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

12 Thornton 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 74% of homes in Mendon 01756
  • Costs less per square foot than 98% of homes in Mendon 01756
  • Bigger than 84% of homes in Worcester County
  • Has a smaller lot than 79% of homes in Mendon 01756
  • Older than 74% of homes in Mendon 01756

What homes are worth in Mendon 01756

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

This home
$357K$1.2M

This home is worth more than 26% of homes in Mendon 01756.

How it measures up in Mendon 01756

The dot is this home. The mark in the middle is the typical home in Mendon 01756.

Estimated value$579,316
CheaperTypical $712,269Pricier

Pricier than 26% of homes nearby

Price per ft²$217
CheaperTypical $327Pricier

Pricier than 2% of homes nearby

Living area2,672 ft²
SmallerTypical 2,222 ft²Bigger

Bigger than 72% of homes nearby

Lot size0.87 ac
SmallerTypical 1.4 acBigger

Bigger than 21% of homes nearby

Year built1969
OlderTypical 1987Newer

Newer than 26% of homes nearby

How 12 Thornton St ranks against every home in each area.
MeasureThis homeMendon 01756Worcester County
Estimated valuepricier than$579,31626% of homes68% of homes
Price per ft²pricier than$2172% of homes9% of homes
Living areabigger than2,672 ft²72% of homes84% of homes
Lot sizebigger than0.87 ac21% of homes64% of homes
Year builtnewer than196926% of homes51% of homes

About 12 Thornton St

How much is 12 Thornton St, Mendon, MA worth?

The TopHap Estimate for 12 Thornton St, Mendon, MA is $579,316 as of Sep 24, 2026. The likely range is $535,397 to $623,235. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12 Thornton St, Mendon, MA last sell?

12 Thornton St, Mendon, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 12 Thornton St, Mendon, MA?

12 Thornton St, Mendon, MA has 4 bedrooms, 1.5 bathrooms, 2,672 square feet of living space and a 0.86-acre lot.

When was 12 Thornton St, Mendon, MA built?

12 Thornton St, Mendon, MA was built in 1969, making it 57 years old. It is a raised ranch home. The building has 1 story.

What schools serve 12 Thornton St, Mendon, MA?

12 Thornton St, Mendon, MA is assigned to Henry P. Clough Elementary School (elementary), rated B; Miscoe Hill Middle School (middle), rated B-; Nipmuc Regional High School (high), rated B. All sit in Mendon-Upton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12 Thornton St, Mendon, MA compare to other homes in Mendon 01756?

Among the 2,161 homes in Mendon 01756, it is worth more than 26% of them ($579,316 against a typical $712,269), its price per square foot is higher than 2% of them ($217 against a typical $327), it is bigger than 72% of them (2,672 ft² against a typical 2,222 ft²), its lot is bigger than 21% of them (0.87 ac against a typical 1.4 ac) and it is newer than 26% of them (1969 against a typical 1987). Measured against all of Worcester County, it is worth more than 68% 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 12 Thornton St, Mendon, MA?

The 2026 property tax bill for 12 Thornton St, Mendon, MA was $6,907. The county assessed it at $520,900.

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