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CondominiumResidential
$753,523$380 / 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 Jul 14, 2026

21A BLACKSMITH ROW

GROTON, MA 01450
2
Beds
2.5
Baths
1,982 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.
4.2 ac
Lot SizeThe size of the land the home sits on, from county records.
2012
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
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

$754K
$703K low$804K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,271 (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.$673,500 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$673,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$865,640

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyMIDDLESEX
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
Florence Roche Elementary SchoolA
Elementary · Grades KG–4 · 0.7 mi
M
Groton - Dunstable Regional Middle SchoolB+
Middle · Grades 5–8 · 0.8 mi
H
Groton - Dunstable Regional High SchoolA
High · Grades 9–12 · 3.3 mi

District: Groton-Dunstable School District

Neighborhood · ZIP 01450These 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.73
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 100.77

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.4.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.11,438
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.343 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$170,664
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$181,425
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%

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

21a Blacksmith Row 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.

  • Costs more per square foot than 77% of homes in Groton 01450
  • Has a bigger lot than 94% of homes in Middlesex County
  • Newer than 95% of homes in Middlesex County

What homes are worth in Groton 01450

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

This home
$325K$1.5M

This home is worth more than 50% of homes in Groton 01450.

How it measures up in Groton 01450

The dot is this home. The mark in the middle is the typical home in Groton 01450.

Estimated value$753,523
CheaperTypical $755,874Pricier

Pricier than 50% of homes nearby

Price per ft²$380
CheaperTypical $336Pricier

Pricier than 77% of homes nearby

Living area1,982 ft²
SmallerTypical 2,294 ft²Bigger

Bigger than 36% of homes nearby

Lot size4.2 ac
SmallerTypical 1.28 acBigger

Bigger than 86% of homes nearby

Year built2012
OlderTypical 1985Newer

Newer than 92% of homes nearby

How 21a Blacksmith Row ranks against every home in each area.
MeasureThis homeGroton 01450Middlesex County
Estimated valuepricier than$753,52350% of homes45% of homes
Price per ft²pricier than$38077% of homes27% of homes
Living areabigger than1,982 ft²36% of homes56% of homes
Lot sizebigger than4.2 ac86% of homes94% of homes
Year builtnewer than201292% of homes95% of homes

About 21a Blacksmith Row

How much is 21a Blacksmith Row, Groton, MA worth?

The TopHap Estimate for 21a Blacksmith Row, Groton, MA is $753,523 as of Jul 14, 2026. The likely range is $703,033 to $804,013. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21a Blacksmith Row, Groton, MA last sell?

21a Blacksmith Row, Groton, MA last sold on May 2, 2018, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21a Blacksmith Row, Groton, MA?

21a Blacksmith Row, Groton, MA has 2 bedrooms, 2.5 bathrooms and 1,982 square feet of living space.

When was 21a Blacksmith Row, Groton, MA built?

21a Blacksmith Row, Groton, MA was built in 2012, making it 14 years old. The building has 2 stories.

What schools serve 21a Blacksmith Row, Groton, MA?

21a Blacksmith Row, Groton, MA is assigned to Florence Roche Elementary School (elementary), rated A; Groton - Dunstable Regional Middle School (middle), rated B+; Groton - Dunstable Regional High School (high), rated A. All sit in Groton-Dunstable School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21a Blacksmith Row, Groton, MA compare to other homes in Groton 01450?

Among the 3,834 homes in Groton 01450, it is worth more than 50% of them ($753,523 against a typical $755,874), its price per square foot is higher than 77% of them ($380 against a typical $336), it is bigger than 36% of them (1,982 ft² against a typical 2,294 ft²), its lot is bigger than 86% of them (4.2 ac against a typical 1.28 ac) and it is newer than 92% of them (2012 against a typical 1985). Measured against all of Middlesex County, it is worth more than 45% 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 21a Blacksmith Row, Groton, MA?

The 2025 property tax bill for 21a Blacksmith Row, Groton, MA was $10,271. The county assessed it at $673,500.

More homes on 21a Blacksmith Row

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