Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential
$379,821$387 / 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 97How 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

161 SPLIT ROCK

ACTON, MA 01718
2
Beds
1.5
Baths
981 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.
7.77 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$380K
$368K low$391K high
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.$379,821
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$303,857

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,217 (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.$304,200 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$304,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$407,075

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyMIDDLESEX
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Acton - Boxborough Regional High SchoolA
High · Grades 9–12 · 3.1 mi
E
Luther Conant Elementary SchoolA+
Elementary · Grades KG–6 · 3.2 mi
M
R. J. Grey Junior High SchoolA
Middle · Grades 7–8 · 3.3 mi

District: Acton-Boxborough School District

Neighborhood · ZIP 01718These 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.130
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 100.74

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
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.1.5%
PopulationHow many people live in this area.59
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,659 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$134,897
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,056
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

161 Split Rock 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.

  • Among the least valuable homes in Acton 01718
  • Costs more per square foot than 93% of homes in Acton 01718
  • Among the smallest homes in Acton 01718
  • Has a bigger lot than 96% of homes in Middlesex County
  • Among the newest homes in Acton 01718

What homes are worth in Acton 01718

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

This home
$387K$598K

This home is worth less than almost all homes in Acton 01718.

How it measures up in Acton 01718

The dot is this home. The mark in the middle is the typical home in Acton 01718.

Estimated value$379,821
CheaperTypical $523,311Pricier

Cheaper than almost all homes nearby

Price per ft²$387
CheaperTypical $333Pricier

Pricier than 93% of homes nearby

Living area981 ft²
SmallerTypical 1,594 ft²Bigger

Smaller than almost all homes nearby

Lot size7.77 ac
SmallerTypical 10.95 acBigger

Bigger than 28% of homes nearby

Year built1972
OlderTypical 1972Newer

Newer than almost all homes nearby

How 161 Split Rock ranks against every home in each area.
MeasureThis homeActon 01718Middlesex County
Estimated valuepricier than$379,821almost no homes6% of homes
Price per ft²pricier than$38793% of homes29% of homes
Living areabigger than981 ft²almost no homes10% of homes
Lot sizebigger than7.77 ac28% of homes96% of homes
Year builtnewer than1972almost all homes66% of homes

About 161 Split Rock

How much is 161 Split Rock, Acton, MA worth?

The TopHap Estimate for 161 Split Rock, Acton, MA is $379,821 as of Jul 14, 2026. The likely range is $368,249 to $391,393. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 161 Split Rock, Acton, MA last sell?

161 Split Rock, Acton, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 161 Split Rock, Acton, MA?

161 Split Rock, Acton, MA has 2 bedrooms, 1.5 bathrooms and 981 square feet of living space.

When was 161 Split Rock, Acton, MA built?

161 Split Rock, Acton, MA was built in 1972, making it 54 years old. The building has 2 stories.

What schools serve 161 Split Rock, Acton, MA?

161 Split Rock, Acton, MA is assigned to Acton - Boxborough Regional High School (high), rated A; Luther Conant Elementary School (elementary), rated A+; R. J. Grey Junior High School (middle), rated A. All sit in Acton-Boxborough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 161 Split Rock, Acton, MA compare to other homes in Acton 01718?

Among the 277 homes in Acton 01718, it is worth more than almost none of them ($379,821 against a typical $523,311), its price per square foot is higher than 93% of them ($387 against a typical $333), it is bigger than almost none of them (981 ft² against a typical 1,594 ft²), its lot is bigger than 28% of them (7.77 ac against a typical 10.95 ac) and it is newer than almost all of them (1972 against a typical 1972). Measured against all of Middlesex County, it is worth more than 6% 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 161 Split Rock, Acton, MA?

The 2025 property tax bill for 161 Split Rock, Acton, MA was $5,217. The county assessed it at $304,200.

Closest homes

More homes in Acton 01718

Assigned schools

Explore the area

See this home in context

Open 161 Split Rock 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