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Single Family ResidenceResidential
$1,390,789$574 / 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 94How 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

109 PROSPECT ST

CARLISLE, MA 01741
4
Beds
2.5
Baths
2,425 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.
7.98 ac
Lot SizeThe size of the land the home sits on, from county records.
1982
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

$1.4M
$1.3M low$1.5M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,063 (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.$1,142,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$656,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$486,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,089,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,299,885

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.13 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.0.2 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.Contemporary
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.7.98
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.Forced Air With Air Conditioning
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(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
Carlisle SchoolA
Elementary · Grades PK–8 · 1.7 mi
H
Concord Carlisle High SchoolA+
High · Grades 9–12 · 3.9 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

109 Prospect 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 86% of homes in Middlesex County
  • Costs more per square foot than 90% of homes in Carlisle 01741
  • Smaller than 74% of homes in Carlisle 01741
  • Has a bigger lot than 96% of homes in Carlisle 01741
  • Newer than 73% of homes in Middlesex County

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
$791K$2.6M

This home is worth more than 52% 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$1,390,789
CheaperTypical $1,374,429Pricier

Pricier than 52% of homes nearby

Price per ft²$574
CheaperTypical $437Pricier

Pricier than 90% of homes nearby

Living area2,425 ft²
SmallerTypical 3,138 ft²Bigger

Bigger than 26% of homes nearby

Lot size7.98 ac
SmallerTypical 2.14 acBigger

Bigger than 96% of homes nearby

Year built1982
OlderTypical 1979Newer

Newer than 57% of homes nearby

How 109 Prospect St ranks against every home in each area.
MeasureThis homeCarlisle 01741Middlesex County
Estimated valuepricier than$1,390,78952% of homes86% of homes
Price per ft²pricier than$57490% of homes72% of homes
Living areabigger than2,425 ft²26% of homes71% of homes
Lot sizebigger than7.98 ac96% of homes96% of homes
Year builtnewer than198257% of homes73% of homes

About 109 Prospect St

How much is 109 Prospect St, Carlisle, MA worth?

The TopHap Estimate for 109 Prospect St, Carlisle, MA is $1,390,789 as of Aug 30, 2026. The likely range is $1,302,823 to $1,478,755. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 109 Prospect St, Carlisle, MA last sell?

109 Prospect St, Carlisle, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 109 Prospect St, Carlisle, MA?

109 Prospect St, Carlisle, MA has 4 bedrooms, 2.5 bathrooms, 2,425 square feet of living space and a 7.98-acre lot.

When was 109 Prospect St, Carlisle, MA built?

109 Prospect St, Carlisle, MA was built in 1982, making it 44 years old. It is a contemporary home. The building has 2 stories.

What schools serve 109 Prospect St, Carlisle, MA?

109 Prospect 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 109 Prospect St, Carlisle, MA compare to other homes in Carlisle 01741?

Among the 1,841 homes in Carlisle 01741, it is worth more than 52% of them ($1,390,789 against a typical $1,374,429), its price per square foot is higher than 90% of them ($574 against a typical $437), it is bigger than 26% of them (2,425 ft² against a typical 3,138 ft²), its lot is bigger than 96% of them (7.98 ac against a typical 2.14 ac) and it is newer than 57% of them (1982 against a typical 1979). Measured against all of Middlesex County, it is worth more than 86% 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 109 Prospect St, Carlisle, MA?

The 2025 property tax bill for 109 Prospect St, Carlisle, MA was $15,063. The county assessed it at $1,142,900.

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