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Single Family ResidenceResidential
$799,766$391 / 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 96How 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 $395,000 on Jun 24, 2004

121 DARTMOUTH ST

MARLBOROUGH, MA 01752
3
Beds
2.5
Baths
2,044 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
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

$800K
$771K low$828K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$395,000 · Jun 24, 2004
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.$461,201
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$368,961
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.41%
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.$238,565
ST MARYS CREDIT UNION · R · recorded Mar 26, 2021
2nd 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.$100,000
ST MARYS CREDIT UNION

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,305 (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.$639,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$228,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$411,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$704,710

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.0.50
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
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(3)

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
1LT Charles W. Whitcomb SchoolB-
Middle · Grades 6–8 · 1.5 mi
H
Marlborough High SchoolC-
High · Grades 9–12 · 1.8 mi
E
Goodnow Brothers Elementary SchoolC+
Elementary · Grades KG–5 · 1.8 mi

District: Marlborough School District

Neighborhood · ZIP 01752These 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.100
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.1%
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.42,223
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,953 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,959
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,206
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

121 Dartmouth 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 84% of homes in Marlborough 01752
  • Costs more per square foot than 71% of homes in Marlborough 01752
  • Bigger than 70% of homes in Marlborough 01752
  • Has a bigger lot than 65% of homes in Middlesex County
  • Newer than 79% of homes in Middlesex County

What homes are worth in Marlborough 01752

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

This home
$219K$1.1M

This home is worth more than 84% of homes in Marlborough 01752.

How it measures up in Marlborough 01752

The dot is this home. The mark in the middle is the typical home in Marlborough 01752.

Estimated value$799,766
CheaperTypical $550,256Pricier

Pricier than 84% of homes nearby

Price per ft²$391
CheaperTypical $354Pricier

Pricier than 71% of homes nearby

Living area2,044 ft²
SmallerTypical 1,585 ft²Bigger

Bigger than 70% of homes nearby

Lot size0.5 ac
SmallerTypical 0.46 acBigger

Bigger than 54% of homes nearby

Year built1987
OlderTypical 1968Newer

Newer than 75% of homes nearby

How 121 Dartmouth St ranks against every home in each area.
MeasureThis homeMarlborough 01752Middlesex County
Estimated valuepricier than$799,76684% of homes52% of homes
Price per ft²pricier than$39171% of homes30% of homes
Living areabigger than2,044 ft²70% of homes59% of homes
Lot sizebigger than0.5 ac54% of homes65% of homes
Year builtnewer than198775% of homes79% of homes

About 121 Dartmouth St

How much is 121 Dartmouth St, Marlborough, MA worth?

The TopHap Estimate for 121 Dartmouth St, Marlborough, MA is $799,766 as of Jul 14, 2026. The likely range is $771,216 to $828,316. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Dartmouth St, Marlborough, MA last sell?

121 Dartmouth St, Marlborough, MA last sold on Jun 24, 2004 for $395,000, according to the county's recorded deed.

How big is 121 Dartmouth St, Marlborough, MA?

121 Dartmouth St, Marlborough, MA has 3 bedrooms, 2.5 bathrooms, 2,044 square feet of living space and a 0.50-acre lot.

When was 121 Dartmouth St, Marlborough, MA built?

121 Dartmouth St, Marlborough, MA was built in 1987, making it 39 years old. It is a contemporary home. The building has 2 stories.

What schools serve 121 Dartmouth St, Marlborough, MA?

121 Dartmouth St, Marlborough, MA is assigned to 1LT Charles W. Whitcomb School (middle), rated B-; Marlborough High School (high), rated C-; Goodnow Brothers Elementary School (elementary), rated C+. All sit in Marlborough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 Dartmouth St, Marlborough, MA compare to other homes in Marlborough 01752?

Among the 10,751 homes in Marlborough 01752, it is worth more than 84% of them ($799,766 against a typical $550,256), its price per square foot is higher than 71% of them ($391 against a typical $354), it is bigger than 70% of them (2,044 ft² against a typical 1,585 ft²), its lot is bigger than 54% of them (0.5 ac against a typical 0.46 ac) and it is newer than 75% of them (1987 against a typical 1968). Measured against all of Middlesex County, it is worth more than 52% 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 121 Dartmouth St, Marlborough, MA?

The 2025 property tax bill for 121 Dartmouth St, Marlborough, MA was $6,305. The county assessed it at $639,500.

Closest homes

More homes in Marlborough 01752

Assigned schools

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