Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,458,289$456 / 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 92How 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 $310,200 on May 4, 1987

506 RIVER RD

CARLISLE, MA 01741
4
Beds
3.5
Baths
3,201 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.
4 ac
Lot SizeThe size of the land the home sits on, from county records.
1850
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.5M
$1.3M low$1.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$310,200 · May 4, 1987
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$1,063,289
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$850,631
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.27%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$395,000
MORTGAGE FNCL SVCS INC · recorded Jun 4, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,105 (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.$1,297,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$596,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$701,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,235,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,401,725

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.4.00
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.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
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(5)

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 · 1.8 mi
H
Concord Carlisle High SchoolA+
High · Grades 9–12 · 4.1 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

506 River 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.

  • Worth more than 87% of homes in Middlesex County
  • Bigger than 88% of homes in Middlesex County
  • Has a bigger lot than 93% of homes in Middlesex County
  • Among the oldest 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
$792K$2.7M

This home is worth more than 60% 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$1,458,289
CheaperTypical $1,346,465Pricier

Pricier than 60% of homes nearby

Price per ft²$456
CheaperTypical $431Pricier

Pricier than 63% of homes nearby

Living area3,201 ft²
SmallerTypical 3,114 ft²Bigger

Bigger than 53% of homes nearby

Lot size4 ac
SmallerTypical 2.14 acBigger

Bigger than 76% of homes nearby

Year built1850
OlderTypical 1979Newer

Newer than 4% of homes nearby

How 506 River Rd ranks against every home in each area.
MeasureThis homeCarlisle 01741Middlesex County
Estimated valuepricier than$1,458,28960% of homes87% of homes
Price per ft²pricier than$45663% of homes48% of homes
Living areabigger than3,201 ft²53% of homes88% of homes
Lot sizebigger than4 ac76% of homes93% of homes
Year builtnewer than18504% of homesalmost no homes

About 506 River Rd

How much is 506 River Rd, Carlisle, MA worth?

The TopHap Estimate for 506 River Rd, Carlisle, MA is $1,458,289 as of Jul 14, 2026. The likely range is $1,345,918 to $1,570,660. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 506 River Rd, Carlisle, MA last sell?

506 River Rd, Carlisle, MA last sold on May 4, 1987 for $310,200, according to the county's recorded deed.

How big is 506 River Rd, Carlisle, MA?

506 River Rd, Carlisle, MA has 4 bedrooms, 3.5 bathrooms, 3,201 square feet of living space and a 4.00-acre lot.

When was 506 River Rd, Carlisle, MA built?

506 River Rd, Carlisle, MA was built in 1850, making it 176 years old. It is a colonial home. The building has 3 stories.

What schools serve 506 River Rd, Carlisle, MA?

506 River Rd, 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 506 River Rd, Carlisle, MA compare to other homes in Carlisle 01741?

Among the 1,841 homes in Carlisle 01741, it is worth more than 60% of them ($1,458,289 against a typical $1,346,465), its price per square foot is higher than 63% of them ($456 against a typical $431), it is bigger than 53% of them (3,201 ft² against a typical 3,114 ft²), its lot is bigger than 76% of them (4 ac against a typical 2.14 ac) and it is newer than 4% of them (1850 against a typical 1979). Measured against all of Middlesex County, it is worth more than 87% 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 506 River Rd, Carlisle, MA?

The 2025 property tax bill for 506 River Rd, Carlisle, MA was $17,105. The county assessed it at $1,297,800.

Closest homes

More homes in Carlisle 01741

Assigned schools

Explore the area

See this home in context

Open 506 River Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map