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Single Family ResidenceResidential
$1,645,447$531 / 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 Jul 14, 2026
Last sold for $926,080 on Jan 31, 2005

511 THOREAU ST

CONCORD, MA 01742
3
Beds
4 / 1
Baths
3,100 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.
1.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1996
Year BuiltThe year the home was originally built, according to county records.
2
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

$1.6M
$1.6M low$1.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$926,080 · Jan 31, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$19,700 (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.$1,485,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$735,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$750,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,485,700

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
CountyMiddlesex
Lot (acres)The size of the land the home sits on, from county records.1.14
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
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(6)

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
Alcott Elementary SchoolA
Elementary · Grades KG–5 · 0.2 mi
H
Concord Carlisle High SchoolA+
High · Grades 9–12 · 0.3 mi
M
Concord Middle SchoolB+
Middle · Grades 6–8 · 2.7 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

511 Thoreau 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 more than 90% of homes in Middlesex County
  • Costs less per square foot than 75% of homes in Concord 01742
  • Bigger than 87% of homes in Middlesex County
  • Has a bigger lot than 82% of homes in Middlesex County
  • Newer than 86% of homes in Middlesex County

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$4.3M

This home is worth more than 60% 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$1,645,447
CheaperTypical $1,457,606Pricier

Pricier than 60% of homes nearby

Price per ft²$531
CheaperTypical $599Pricier

Pricier than 25% of homes nearby

Living area3,100 ft²
SmallerTypical 2,385 ft²Bigger

Bigger than 70% of homes nearby

Lot size1.14 ac
SmallerTypical 0.67 acBigger

Bigger than 67% of homes nearby

Year built1996
OlderTypical 1966Newer

Newer than 82% of homes nearby

How 511 Thoreau St ranks against every home in each area.
MeasureThis homeConcord 01742Middlesex County
Estimated valuepricier than$1,645,44760% of homes90% of homes
Price per ft²pricier than$53125% of homes66% of homes
Living areabigger than3,100 ft²70% of homes87% of homes
Lot sizebigger than1.14 ac67% of homes82% of homes
Year builtnewer than199682% of homes86% of homes

About 511 Thoreau St

How much is 511 Thoreau St, Concord, MA worth?

The TopHap Estimate for 511 Thoreau St, Concord, MA is $1,645,447 as of Jul 14, 2026. The likely range is $1,578,230 to $1,712,664. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 511 Thoreau St, Concord, MA last sell?

511 Thoreau St, Concord, MA last sold on Jan 31, 2005 for $926,080, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 511 Thoreau St, Concord, MA?

511 Thoreau St, Concord, MA has 3 bedrooms, 4 bathrooms, 3,100 square feet of living space and a 1.14-acre lot.

When was 511 Thoreau St, Concord, MA built?

511 Thoreau St, Concord, MA was built in 1996, making it 30 years old. It is a colonial home. The building has 2 stories.

What schools serve 511 Thoreau St, Concord, MA?

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

How does 511 Thoreau St, Concord, MA compare to other homes in Concord 01742?

Among the 5,735 homes in Concord 01742, it is worth more than 60% of them ($1,645,447 against a typical $1,457,606), its price per square foot is higher than 25% of them ($531 against a typical $599), it is bigger than 70% of them (3,100 ft² against a typical 2,385 ft²), its lot is bigger than 67% of them (1.14 ac against a typical 0.67 ac) and it is newer than 82% of them (1996 against a typical 1966). Measured against all of Middlesex County, it is worth more than 90% 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 511 Thoreau St, Concord, MA?

The 2025 property tax bill for 511 Thoreau St, Concord, MA was $19,700. The county assessed it at $1,485,700.

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