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CondominiumResidential
$407,229$314 / 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 Aug 30, 2026
Last sold for $290,000 on Jan 29, 2019

19 ONAMOG ST

MARLBOROUGH, MA 01752
Building report
2
Beds
2.5
Baths
1,296 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.
1.02 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$407K
$390K low$425K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$290,000 · Jan 29, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,626 (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.$367,700 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$367,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$389,025

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
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
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(9)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(4)

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 · 1.0 mi
E
Goodnow Brothers Elementary SchoolC+
Elementary · Grades KG–5 · 1.4 mi
H
Marlborough High SchoolC-
High · Grades 9–12 · 1.4 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%

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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

19 Onamog 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 92% of homes in Middlesex County
  • Costs less per square foot than 88% of homes in Middlesex County
  • Smaller than 75% of homes in Middlesex County
  • Has a bigger lot than 80% of homes in Middlesex County
  • Newer than 82% 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
$194K$1.1M

This home is worth more than 23% 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$407,229
CheaperTypical $522,262Pricier

Pricier than 23% of homes nearby

Price per ft²$314
CheaperTypical $336Pricier

Pricier than 38% of homes nearby

Living area1,296 ft²
SmallerTypical 1,590 ft²Bigger

Bigger than 32% of homes nearby

Lot size1.02 ac
SmallerTypical 0.46 acBigger

Bigger than 73% of homes nearby

Year built1990
OlderTypical 1968Newer

Newer than 79% of homes nearby

How 19 Onamog St ranks against every home in each area.
MeasureThis homeMarlborough 01752Middlesex County
Estimated valuepricier than$407,22923% of homes8% of homes
Price per ft²pricier than$31438% of homes12% of homes
Living areabigger than1,296 ft²32% of homes25% of homes
Lot sizebigger than1.02 ac73% of homes80% of homes
Year builtnewer than199079% of homes82% of homes

About 19 Onamog St

How much is 19 Onamog St, Marlborough, MA worth?

The TopHap Estimate for 19 Onamog St, Marlborough, MA is $407,229 as of Aug 30, 2026. The likely range is $389,949 to $424,509. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 19 Onamog St, Marlborough, MA last sell?

19 Onamog St, Marlborough, MA last sold on Jan 29, 2019 for $290,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 19 Onamog St, Marlborough, MA?

19 Onamog St, Marlborough, MA has 2 bedrooms, 2.5 bathrooms and 1,296 square feet of living space.

When was 19 Onamog St, Marlborough, MA built?

19 Onamog St, Marlborough, MA was built in 1990, making it 36 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 19 Onamog St, Marlborough, MA?

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

How does 19 Onamog St, Marlborough, MA compare to other homes in Marlborough 01752?

Among the 10,751 homes in Marlborough 01752, it is worth more than 23% of them ($407,229 against a typical $522,262), its price per square foot is higher than 38% of them ($314 against a typical $336), it is bigger than 32% of them (1,296 ft² against a typical 1,590 ft²), its lot is bigger than 73% of them (1.02 ac against a typical 0.46 ac) and it is newer than 79% of them (1990 against a typical 1968). Measured against all of Middlesex County, it is worth more than 8% 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 19 Onamog St, Marlborough, MA?

The 2025 property tax bill for 19 Onamog St, Marlborough, MA was $3,626. The county assessed it at $367,700.

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