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Single Family ResidenceResidential
$909,230$546 / 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 90How 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 $815,000 on Apr 28, 2023

423 SOUTH ST

CARLISLE, MA 01741
3
Beds
2
Baths
1,666 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.
3.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
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

$909K
$822K low$996K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$815,000 · Apr 28, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,512 (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.$797,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$588,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$209,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$783,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$967,480

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
Lot (acres)The size of the land the home sits on, from county records.3.46
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.Hot Water
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(4)

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
Carlisle SchoolA
Elementary · Grades PK–8 · 1.7 mi
H
Concord Carlisle High SchoolA+
High · Grades 9–12 · 4.8 mi

District: Concord-Carlisle School District

Neighborhood · ZIP 01741These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.81

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.5,231
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.338 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$224,253
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$263,753
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

423 South 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 less than 94% of homes in Carlisle 01741
  • Costs more per square foot than 85% of homes in Carlisle 01741
  • Smaller than 95% of homes in Carlisle 01741
  • Has a bigger lot than 92% of homes in Middlesex County
  • Older than 78% of homes in Carlisle 01741

What homes are worth in Carlisle 01741

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

This home
$795K$2.6M

This home is worth more than 6% of homes in Carlisle 01741.

How it measures up in Carlisle 01741

The dot is this home. The mark in the middle is the typical home in Carlisle 01741.

Estimated value$909,230
CheaperTypical $1,374,429Pricier

Pricier than 6% of homes nearby

Price per ft²$546
CheaperTypical $437Pricier

Pricier than 85% of homes nearby

Living area1,666 ft²
SmallerTypical 3,138 ft²Bigger

Bigger than 5% of homes nearby

Lot size3.46 ac
SmallerTypical 2.15 acBigger

Bigger than 71% of homes nearby

Year built1963
OlderTypical 1979Newer

Newer than 22% of homes nearby

How 423 South St ranks against every home in each area.
MeasureThis homeCarlisle 01741Middlesex County
Estimated valuepricier than$909,2306% of homes63% of homes
Price per ft²pricier than$54685% of homes68% of homes
Living areabigger than1,666 ft²5% of homes42% of homes
Lot sizebigger than3.46 ac71% of homes92% of homes
Year builtnewer than196322% of homes57% of homes

About 423 South St

How much is 423 South St, Carlisle, MA worth?

The TopHap Estimate for 423 South St, Carlisle, MA is $909,230 as of Aug 30, 2026. The likely range is $822,446 to $996,014. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 423 South St, Carlisle, MA last sell?

423 South St, Carlisle, MA last sold on Apr 28, 2023 for $815,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 423 South St, Carlisle, MA?

423 South St, Carlisle, MA has 3 bedrooms, 2 bathrooms, 1,666 square feet of living space and a 3.46-acre lot.

When was 423 South St, Carlisle, MA built?

423 South St, Carlisle, MA was built in 1963, making it 63 years old. It is a ranch home. The building has 1 story.

What schools serve 423 South St, Carlisle, MA?

423 South St, Carlisle, MA is assigned to Carlisle School (elementary), rated A; Concord Carlisle High School (high), rated A+. All sit in Concord-Carlisle School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 423 South St, Carlisle, MA compare to other homes in Carlisle 01741?

Among the 1,841 homes in Carlisle 01741, it is worth more than 6% of them ($909,230 against a typical $1,374,429), its price per square foot is higher than 85% of them ($546 against a typical $437), it is bigger than 5% of them (1,666 ft² against a typical 3,138 ft²), its lot is bigger than 71% of them (3.46 ac against a typical 2.15 ac) and it is newer than 22% of them (1963 against a typical 1979). Measured against all of Middlesex County, it is worth more than 63% 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 423 South St, Carlisle, MA?

The 2025 property tax bill for 423 South St, Carlisle, MA was $10,512. The county assessed it at $797,600.

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