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Single Family ResidenceResidential
$676,423$301 / 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 97How 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 $587,500 on Dec 28, 2022

657 LONGLEY RD

GROTON, MA 01450
4
Beds
1.5
Baths
2,248 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.
6 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
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

$676K
$655K low$698K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$587,500 · Dec 28, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,833 (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.$579,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$242,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$337,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$694,260

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.27 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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.Contemporary
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.6.00
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.Baseboard
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(2)

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
Groton - Dunstable Regional High SchoolA
High · Grades 9–12 · 1.7 mi
M
Groton - Dunstable Regional Middle SchoolB+
Middle · Grades 5–8 · 2.6 mi
E
Swallow Union Elementary SchoolA-
Elementary · Grades KG–4 · 4.8 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%

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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

657 Longley Rd 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 less per square foot than 91% of homes in Middlesex County
  • Bigger than 66% of homes in Middlesex County
  • Has a bigger lot than 95% of homes in Middlesex County
  • Older than 66% of homes in Groton 01450

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
$307K$1.5M

This home is worth more than 38% 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$676,423
CheaperTypical $756,184Pricier

Pricier than 38% of homes nearby

Price per ft²$301
CheaperTypical $336Pricier

Pricier than 24% of homes nearby

Living area2,248 ft²
SmallerTypical 2,284 ft²Bigger

Bigger than 48% of homes nearby

Lot size6 ac
SmallerTypical 1.29 acBigger

Bigger than 93% of homes nearby

Year built1972
OlderTypical 1985Newer

Newer than 34% of homes nearby

How 657 Longley Rd ranks against every home in each area.
MeasureThis homeGroton 01450Middlesex County
Estimated valuepricier than$676,42338% of homes36% of homes
Price per ft²pricier than$30124% of homes9% of homes
Living areabigger than2,248 ft²48% of homes66% of homes
Lot sizebigger than6 ac93% of homes95% of homes
Year builtnewer than197234% of homes66% of homes

About 657 Longley Rd

How much is 657 Longley Rd, Groton, MA worth?

The TopHap Estimate for 657 Longley Rd, Groton, MA is $676,423 as of Aug 30, 2026. The likely range is $655,096 to $697,750. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 657 Longley Rd, Groton, MA last sell?

657 Longley Rd, Groton, MA last sold on Dec 28, 2022 for $587,500, according to the county's recorded deed.

How big is 657 Longley Rd, Groton, MA?

657 Longley Rd, Groton, MA has 4 bedrooms, 1.5 bathrooms, 2,248 square feet of living space and a 6.00-acre lot.

When was 657 Longley Rd, Groton, MA built?

657 Longley Rd, Groton, MA was built in 1972, making it 54 years old. It is a contemporary home. The building has 2 stories.

What schools serve 657 Longley Rd, Groton, MA?

657 Longley Rd, Groton, MA is assigned to Groton - Dunstable Regional High School (high), rated A; Groton - Dunstable Regional Middle School (middle), rated B+; Swallow Union Elementary School (elementary), rated A-. All sit in Groton-Dunstable School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 657 Longley Rd, Groton, MA compare to other homes in Groton 01450?

Among the 3,834 homes in Groton 01450, it is worth more than 38% of them ($676,423 against a typical $756,184), its price per square foot is higher than 24% of them ($301 against a typical $336), it is bigger than 48% of them (2,248 ft² against a typical 2,284 ft²), its lot is bigger than 93% of them (6 ac against a typical 1.29 ac) and it is newer than 34% of them (1972 against a typical 1985). Measured against all of Middlesex County, it is worth more than 36% 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 657 Longley Rd, Groton, MA?

The 2025 property tax bill for 657 Longley Rd, Groton, MA was $8,833. The county assessed it at $579,200.

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