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Single Family ResidenceResidential
$827,040$641 / 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 96How 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

121 HARRINGTON AVE

CONCORD, MA 01742
2
Beds
1
Baths
1,291 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.
1.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1933
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$827K
$796K low$858K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,263 (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.$774,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$574,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$200,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$765,800

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.188 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.1 percent flood zone

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.Ranch
CountyMiddlesex
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.1965
Lot (acres)The size of the land the home sits on, from county records.1.16
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Steam
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.No

Transaction History(1)

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
Thoreau Elementary SchoolB+
Elementary · Grades KG–5 · 0.6 mi
M
Concord Middle SchoolB+
Middle · Grades 6–8 · 0.9 mi
H
Concord Carlisle High SchoolA+
High · Grades 9–12 · 3.1 mi

District: Concord School District

Neighborhood · ZIP 01742These 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.47
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.74

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.18,974
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.737 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$185,796
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$221,000
Average tempThe average temperature here across a full year.49°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

121 Harrington Ave 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 90% of homes in Concord 01742
  • Costs more per square foot than 81% of homes in Middlesex County
  • Smaller than 88% of homes in Concord 01742
  • Has a bigger lot than 83% of homes in Middlesex County
  • Older than 80% of homes in Concord 01742

What homes are worth in Concord 01742

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

This home
$554K$4.2M

This home is worth more than 10% of homes in Concord 01742.

How it measures up in Concord 01742

The dot is this home. The mark in the middle is the typical home in Concord 01742.

Estimated value$827,040
CheaperTypical $1,448,564Pricier

Pricier than 10% of homes nearby

Price per ft²$641
CheaperTypical $598Pricier

Pricier than 63% of homes nearby

Living area1,291 ft²
SmallerTypical 2,389 ft²Bigger

Bigger than 12% of homes nearby

Lot size1.16 ac
SmallerTypical 0.65 acBigger

Bigger than 69% of homes nearby

Year built1933
OlderTypical 1966Newer

Newer than 20% of homes nearby

How 121 Harrington Ave ranks against every home in each area.
MeasureThis homeConcord 01742Middlesex County
Estimated valuepricier than$827,04010% of homes56% of homes
Price per ft²pricier than$64163% of homes81% of homes
Living areabigger than1,291 ft²12% of homes24% of homes
Lot sizebigger than1.16 ac69% of homes83% of homes
Year builtnewer than193320% of homes33% of homes

About 121 Harrington Ave

How much is 121 Harrington Ave, Concord, MA worth?

The TopHap Estimate for 121 Harrington Ave, Concord, MA is $827,040 as of Sep 24, 2026. The likely range is $796,372 to $857,708. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Harrington Ave, Concord, MA last sell?

121 Harrington Ave, Concord, MA last sold on Dec 1, 1981, according to the county's recorded deed.

How big is 121 Harrington Ave, Concord, MA?

121 Harrington Ave, Concord, MA has 2 bedrooms, 1 bathrooms, 1,291 square feet of living space and a 1.16-acre lot.

When was 121 Harrington Ave, Concord, MA built?

121 Harrington Ave, Concord, MA was built in 1933, making it 93 years old. It is a ranch home. The building has 1 story.

What schools serve 121 Harrington Ave, Concord, MA?

121 Harrington Ave, Concord, MA is assigned to Thoreau Elementary School (elementary), rated B+; Concord Middle School (middle), rated B+; Concord Carlisle High School (high), rated A+. All sit in Concord School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 Harrington Ave, Concord, MA compare to other homes in Concord 01742?

Among the 5,735 homes in Concord 01742, it is worth more than 10% of them ($827,040 against a typical $1,448,564), its price per square foot is higher than 63% of them ($641 against a typical $598), it is bigger than 12% of them (1,291 ft² against a typical 2,389 ft²), its lot is bigger than 69% of them (1.16 ac against a typical 0.65 ac) and it is newer than 20% of them (1933 against a typical 1966). Measured against all of Middlesex County, it is worth more than 56% 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 121 Harrington Ave, Concord, MA?

The 2025 property tax bill for 121 Harrington Ave, Concord, MA was $10,263. The county assessed it at $774,000.

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