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Single Family ResidenceResidential
$974,312$362 / 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 93How 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 $367,665 on Jan 15, 1998

21 BUTTERFIELD DR

WESTBOROUGH, MA 01581
4
Beds
2.5
Baths
2,692 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1997
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

$974K
$907K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$367,665 · Jan 15, 1998

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$16,413 (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.$1,030,300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$375,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$655,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$947,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,146,296

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
CountyWORCESTER
Lot (acres)The size of the land the home sits on, from county records.0.33
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 With Air Conditioning
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(3)

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
Elsie A.Hastings Elementary SchoolA-
Elementary · Grades KG–3 · 0.7 mi
H
Westborough High SchoolA+
High · Grades 9–12 · 1.8 mi
M
Sarah W. Gibbons Middle SchoolA+
Middle · Grades 7–8 · 2.0 mi

District: Westborough School District

Neighborhood · ZIP 01581These 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.65
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 100.59

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.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.21,880
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,023 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$137,510
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$171,995
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.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

21 Butterfield Dr 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 95% of homes in Worcester County
  • Costs more per square foot than 77% of homes in Worcester County
  • Bigger than 84% of homes in Worcester County
  • Has a smaller lot than 83% of homes in Westborough 01581
  • Newer than 80% of homes in Worcester County

What homes are worth in Westborough 01581

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

This home
$260K$1.5M

This home is worth more than 78% of homes in Westborough 01581.

How it measures up in Westborough 01581

The dot is this home. The mark in the middle is the typical home in Westborough 01581.

Estimated value$974,312
CheaperTypical $695,550Pricier

Pricier than 78% of homes nearby

Price per ft²$362
CheaperTypical $375Pricier

Pricier than 40% of homes nearby

Living area2,692 ft²
SmallerTypical 1,936 ft²Bigger

Bigger than 75% of homes nearby

Lot size0.33 ac
SmallerTypical 0.66 acBigger

Bigger than 17% of homes nearby

Year built1997
OlderTypical 1977Newer

Newer than 75% of homes nearby

How 21 Butterfield Dr ranks against every home in each area.
MeasureThis homeWestborough 01581Worcester County
Estimated valuepricier than$974,31278% of homes95% of homes
Price per ft²pricier than$36240% of homes77% of homes
Living areabigger than2,692 ft²75% of homes84% of homes
Lot sizebigger than0.33 ac17% of homes37% of homes
Year builtnewer than199775% of homes80% of homes

About 21 Butterfield Dr

How much is 21 Butterfield Dr, Westborough, MA worth?

The TopHap Estimate for 21 Butterfield Dr, Westborough, MA is $974,312 as of Sep 24, 2026. The likely range is $907,072 to $1,041,552. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Butterfield Dr, Westborough, MA last sell?

21 Butterfield Dr, Westborough, MA last sold on Jan 15, 1998 for $367,665, according to the county's recorded deed.

How big is 21 Butterfield Dr, Westborough, MA?

21 Butterfield Dr, Westborough, MA has 4 bedrooms, 2.5 bathrooms, 2,692 square feet of living space and a 0.33-acre lot.

When was 21 Butterfield Dr, Westborough, MA built?

21 Butterfield Dr, Westborough, MA was built in 1997, making it 29 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Butterfield Dr, Westborough, MA?

21 Butterfield Dr, Westborough, MA is assigned to Elsie A.Hastings Elementary School (elementary), rated A-; Westborough High School (high), rated A+; Sarah W. Gibbons Middle School (middle), rated A+. All sit in Westborough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Butterfield Dr, Westborough, MA compare to other homes in Westborough 01581?

Among the 5,696 homes in Westborough 01581, it is worth more than 78% of them ($974,312 against a typical $695,550), its price per square foot is higher than 40% of them ($362 against a typical $375), it is bigger than 75% of them (2,692 ft² against a typical 1,936 ft²), its lot is bigger than 17% of them (0.33 ac against a typical 0.66 ac) and it is newer than 75% of them (1997 against a typical 1977). Measured against all of Worcester County, it is worth more than 95% 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 Butterfield Dr, Westborough, MA?

The 2026 property tax bill for 21 Butterfield Dr, Westborough, MA was $16,413. The county assessed it at $1,030,300.

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