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Single Family ResidenceResidential
$605,966$324 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $50,000 on Aug 31, 2000

21 ONYX DR

NORTH DARTMOUTH, MA 02747
3
Beds
2.5
Baths
1,872 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.
0.49 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
Year BuiltThe year the home was originally built, according to county records.
1
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

$606K
$573K low$639K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$50,000 · Aug 31, 2000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,134 (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.$480,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$189,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$290,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$513,380

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.Ranch
CountyBRISTOL
Lot (acres)The size of the land the home sits on, from county records.0.49
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(4)

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.

H
Dartmouth High SchoolB-
High · Grades 9–12 · 1.0 mi
M
Dartmouth Middle SchoolB+
Middle · Grades 6–8 · 1.4 mi
E
James M. Quinn SchoolB
Elementary · Grades KG–5 · 1.5 mi

District: Dartmouth School District

Neighborhood · ZIP 02747These 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.63
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.58

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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
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.23,541
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.486 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$95,499
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$113,359
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

Owner Tools

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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

21 Onyx Dr 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 66% of homes in Bristol County
  • Costs less per square foot than 73% of homes in North Dartmouth 02747

What homes are worth in North Dartmouth 02747

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

This home
$346K$1.1M

This home is worth more than 55% of homes in North Dartmouth 02747.

How it measures up in North Dartmouth 02747

The dot is this home. The mark in the middle is the typical home in North Dartmouth 02747.

Estimated value$605,966
CheaperTypical $582,210Pricier

Pricier than 55% of homes nearby

Price per ft²$324
CheaperTypical $363Pricier

Pricier than 27% of homes nearby

Living area1,872 ft²
SmallerTypical 1,621 ft²Bigger

Bigger than 62% of homes nearby

Lot size0.49 ac
SmallerTypical 0.56 acBigger

Bigger than 47% of homes nearby

Year built1975
OlderTypical 1975Newer

Newer than 50% of homes nearby

How 21 Onyx Dr ranks against every home in each area.
MeasureThis homeNorth Dartmouth 02747Bristol County
Estimated valuepricier than$605,96655% of homes66% of homes
Price per ft²pricier than$32427% of homes40% of homes
Living areabigger than1,872 ft²62% of homes59% of homes
Lot sizebigger than0.49 ac47% of homes59% of homes
Year builtnewer than197550% of homes60% of homes

About 21 Onyx Dr

How much is 21 Onyx Dr, North Dartmouth, MA worth?

The TopHap Estimate for 21 Onyx Dr, North Dartmouth, MA is $605,966 as of Sep 24, 2026. The likely range is $573,371 to $638,561. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Onyx Dr, North Dartmouth, MA last sell?

21 Onyx Dr, North Dartmouth, MA last sold on Aug 31, 2000 for $50,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Onyx Dr, North Dartmouth, MA?

21 Onyx Dr, North Dartmouth, MA has 3 bedrooms, 2.5 bathrooms, 1,872 square feet of living space and a 0.49-acre lot.

When was 21 Onyx Dr, North Dartmouth, MA built?

21 Onyx Dr, North Dartmouth, MA was built in 1975, making it 51 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Onyx Dr, North Dartmouth, MA?

21 Onyx Dr, North Dartmouth, MA is assigned to Dartmouth High School (high), rated B-; Dartmouth Middle School (middle), rated B+; James M. Quinn School (elementary), rated B. All sit in Dartmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Onyx Dr, North Dartmouth, MA compare to other homes in North Dartmouth 02747?

Among the 6,322 homes in North Dartmouth 02747, it is worth more than 55% of them ($605,966 against a typical $582,210), its price per square foot is higher than 27% of them ($324 against a typical $363), it is bigger than 62% of them (1,872 ft² against a typical 1,621 ft²), its lot is bigger than 47% of them (0.49 ac against a typical 0.56 ac) and it is newer than 50% of them (1975 against a typical 1975). Measured against all of Bristol County, it is worth more than 66% 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 21 Onyx Dr, North Dartmouth, MA?

The 2025 property tax bill for 21 Onyx Dr, North Dartmouth, MA was $4,134. The county assessed it at $480,100.

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