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Single Family ResidenceResidential
$553,390$395 / 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 Jul 14, 2026

13 RIVER ST

WESTFORD, MA 01886
4
Beds
1
Baths
1,400 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1935
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$553K
$499K low$608K 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.$474,390
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$379,512
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.14%
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.$79,000
RBS CITIZENS NA · recorded Aug 12, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,099 (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.$452,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$286,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$166,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$431,100

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.0.33
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
Lloyd G. Blanchard Middle SchoolA-
Middle · Grades 6–8 · 1.1 mi
H
Westford AcademyA
High · Grades 9–12 · 1.2 mi
E
Rita E. Miller Elementary School
Elementary · Grades PK–2 · 3.6 mi

District: Westford School District

Neighborhood · ZIP 01886These 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.19
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.80

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.25,048
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.803 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$163,754
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$183,117
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

13 River 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 87% of homes in Westford 01886
  • Costs less per square foot than 69% of homes in Middlesex County
  • Smaller than 77% of homes in Westford 01886
  • Has a smaller lot than 87% of homes in Westford 01886
  • Older than 91% of homes in Westford 01886

What homes are worth in Westford 01886

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

This home
$323K$1.6M

This home is worth more than 13% of homes in Westford 01886.

How it measures up in Westford 01886

The dot is this home. The mark in the middle is the typical home in Westford 01886.

Estimated value$553,390
CheaperTypical $839,316Pricier

Pricier than 13% of homes nearby

Price per ft²$395
CheaperTypical $421Pricier

Pricier than 34% of homes nearby

Living area1,400 ft²
SmallerTypical 2,080 ft²Bigger

Bigger than 23% of homes nearby

Lot size0.33 ac
SmallerTypical 0.92 acBigger

Bigger than 13% of homes nearby

Year built1935
OlderTypical 1984Newer

Newer than 9% of homes nearby

How 13 River St ranks against every home in each area.
MeasureThis homeWestford 01886Middlesex County
Estimated valuepricier than$553,39013% of homes19% of homes
Price per ft²pricier than$39534% of homes31% of homes
Living areabigger than1,400 ft²23% of homes30% of homes
Lot sizebigger than0.33 ac13% of homes51% of homes
Year builtnewer than19359% of homes34% of homes

About 13 River St

How much is 13 River St, Westford, MA worth?

The TopHap Estimate for 13 River St, Westford, MA is $553,390 as of Jul 14, 2026. The likely range is $498,874 to $607,906. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 13 River St, Westford, MA?

13 River St, Westford, MA has 4 bedrooms, 1 bathrooms, 1,400 square feet of living space and a 0.33-acre lot.

When was 13 River St, Westford, MA built?

13 River St, Westford, MA was built in 1935, making it 91 years old. It is a colonial home. The building has 2 stories.

What schools serve 13 River St, Westford, MA?

13 River St, Westford, MA is assigned to Lloyd G. Blanchard Middle School (middle), rated A-; Westford Academy (high), rated A; Rita E. Miller Elementary School (elementary). All sit in Westford School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 13 River St, Westford, MA compare to other homes in Westford 01886?

Among the 8,171 homes in Westford 01886, it is worth more than 13% of them ($553,390 against a typical $839,316), its price per square foot is higher than 34% of them ($395 against a typical $421), it is bigger than 23% of them (1,400 ft² against a typical 2,080 ft²), its lot is bigger than 13% of them (0.33 ac against a typical 0.92 ac) and it is newer than 9% of them (1935 against a typical 1984). Measured against all of Middlesex County, it is worth more than 19% 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 13 River St, Westford, MA?

The 2025 property tax bill for 13 River St, Westford, MA was $6,099. The county assessed it at $452,800.

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