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Single Family ResidenceResidential
$794,054$194 / 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 89How 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

4 ROCK RD

TYNGSBORO, MA 01879
4
Beds
3 / 1
Baths
4,092 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.
0.69 ac
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
2
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$794K
$704K low$884K 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.$544,654
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$435,723
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.31%
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.$249,400
NETWORK CAP FNDG CORP · recorded Nov 18, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,141 (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.$740,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$241,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$499,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$708,200

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.0.69
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
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.

M
Tyngsborough Middle SchoolB+
Middle · Grades 6–8 · 0.9 mi
H
Tyngsborough High SchoolA-
High · Grades 9–12 · 1.0 mi
E
Tyngsborough Elementary SchoolB-
Elementary · Grades PK–5 · 3.7 mi

District: Tyngsborough School District

Neighborhood · ZIP 01879These 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.50
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.83

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.4.7%
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.12,627
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.702 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,180
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$151,874
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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.Yes

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

4 Rock 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 73% of homes in Tyngsboro 01879
  • Among the lowest price per square foot in Middlesex County
  • Bigger than 97% of homes in Tyngsboro 01879
  • Has a bigger lot than 72% of homes in Middlesex County
  • Newer than 72% of homes in Middlesex County

What homes are worth in Tyngsboro 01879

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

This home
$283K$1.2M

This home is worth more than 73% of homes in Tyngsboro 01879.

How it measures up in Tyngsboro 01879

The dot is this home. The mark in the middle is the typical home in Tyngsboro 01879.

Estimated value$794,054
CheaperTypical $654,621Pricier

Pricier than 73% of homes nearby

Price per ft²$194
CheaperTypical $331Pricier

Cheaper than almost all homes nearby

Living area4,092 ft²
SmallerTypical 1,997 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.69 ac
SmallerTypical 1 acBigger

Bigger than 34% of homes nearby

Year built1980
OlderTypical 1985Newer

Newer than 37% of homes nearby

How 4 Rock Rd ranks against every home in each area.
MeasureThis homeTyngsboro 01879Middlesex County
Estimated valuepricier than$794,05473% of homes51% of homes
Price per ft²pricier than$194almost no homesalmost no homes
Living areabigger than4,092 ft²97% of homes96% of homes
Lot sizebigger than0.69 ac34% of homes72% of homes
Year builtnewer than198037% of homes72% of homes

About 4 Rock Rd

How much is 4 Rock Rd, Tyngsboro, MA worth?

The TopHap Estimate for 4 Rock Rd, Tyngsboro, MA is $794,054 as of Jul 14, 2026. The likely range is $703,732 to $884,376. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 4 Rock Rd, Tyngsboro, MA?

4 Rock Rd, Tyngsboro, MA has 4 bedrooms, 3 bathrooms, 4,092 square feet of living space and a 0.69-acre lot.

When was 4 Rock Rd, Tyngsboro, MA built?

4 Rock Rd, Tyngsboro, MA was built in 1980, making it 46 years old. It is a colonial home. The building has 2 stories.

What schools serve 4 Rock Rd, Tyngsboro, MA?

4 Rock Rd, Tyngsboro, MA is assigned to Tyngsborough Middle School (middle), rated B+; Tyngsborough High School (high), rated A-; Tyngsborough Elementary School (elementary), rated B-. All sit in Tyngsborough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4 Rock Rd, Tyngsboro, MA compare to other homes in Tyngsboro 01879?

Among the 4,283 homes in Tyngsboro 01879, it is worth more than 73% of them ($794,054 against a typical $654,621), its price per square foot is higher than almost none of them ($194 against a typical $331), it is bigger than 97% of them (4,092 ft² against a typical 1,997 ft²), its lot is bigger than 34% of them (0.69 ac against a typical 1 ac) and it is newer than 37% of them (1980 against a typical 1985). Measured against all of Middlesex County, it is worth more than 51% 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 4 Rock Rd, Tyngsboro, MA?

The 2025 property tax bill for 4 Rock Rd, Tyngsboro, MA was $9,141. The county assessed it at $740,800.

Closest homes

More homes in Tyngsboro 01879

Assigned schools

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