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Single Family ResidenceResidential
$443,274$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 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

21 DUPONT AVE

PISCATAWAY, NJ 08854
0
Baths
1,412 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1914
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$443K
$420K low$466K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,192 (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.$454,300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$346,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$107,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$404,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$454,300

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.22
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Grandview Elementary SchoolC
Elementary · Grades KG–3 · 0.7 mi
M
T. Schor Middle SchoolB-
Middle · Grades 6–8 · 0.7 mi
H
Piscataway High SchoolC
High · Grades 9–12 · 1.9 mi

District: Piscataway Township School District

Neighborhood · ZIP 08854These 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.57
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.103

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.63,382
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,298 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$116,616
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,705
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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 Dupont Ave 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 88% of homes in Piscataway 08854
  • Costs less per square foot than 82% of homes in Piscataway 08854
  • Smaller than 66% of homes in Piscataway 08854
  • Has a bigger lot than 69% of homes in Middlesex County
  • Older than 98% of homes in Piscataway 08854

What homes are worth in Piscataway 08854

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

This home
$340K$1M

This home is worth more than 12% of homes in Piscataway 08854.

How it measures up in Piscataway 08854

The dot is this home. The mark in the middle is the typical home in Piscataway 08854.

Estimated value$443,274
CheaperTypical $582,908Pricier

Pricier than 12% of homes nearby

Price per ft²$314
CheaperTypical $358Pricier

Pricier than 18% of homes nearby

Living area1,412 ft²
SmallerTypical 1,628 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.22 ac
SmallerTypical 0.23 acBigger

Bigger than 46% of homes nearby

Year built1914
OlderTypical 1973Newer

Newer than 2% of homes nearby

How 21 Dupont Ave ranks against every home in each area.
MeasureThis homePiscataway 08854Middlesex County
Estimated valuepricier than$443,27412% of homes18% of homes
Price per ft²pricier than$31418% of homes24% of homes
Living areabigger than1,412 ft²34% of homes36% of homes
Lot sizebigger than0.22 ac46% of homes69% of homes
Year builtnewer than19142% of homes5% of homes

About 21 Dupont Ave

How much is 21 Dupont Ave, Piscataway, NJ worth?

The TopHap Estimate for 21 Dupont Ave, Piscataway, NJ is $443,274 as of Sep 24, 2026. The likely range is $420,380 to $466,168. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Dupont Ave, Piscataway, NJ last sell?

21 Dupont Ave, Piscataway, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Dupont Ave, Piscataway, NJ?

21 Dupont Ave, Piscataway, NJ has 1,412 square feet of living space and a 0.22-acre lot.

When was 21 Dupont Ave, Piscataway, NJ built?

21 Dupont Ave, Piscataway, NJ was built in 1914, making it 112 years old. The building has 2 stories.

What schools serve 21 Dupont Ave, Piscataway, NJ?

21 Dupont Ave, Piscataway, NJ is assigned to Grandview Elementary School (elementary), rated C; T. Schor Middle School (middle), rated B-; Piscataway High School (high), rated C. All sit in Piscataway Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Dupont Ave, Piscataway, NJ compare to other homes in Piscataway 08854?

Among the 13,708 homes in Piscataway 08854, it is worth more than 12% of them ($443,274 against a typical $582,908), its price per square foot is higher than 18% of them ($314 against a typical $358), it is bigger than 34% of them (1,412 ft² against a typical 1,628 ft²), its lot is bigger than 46% of them (0.22 ac against a typical 0.23 ac) and it is newer than 2% of them (1914 against a typical 1973). Measured against all of Middlesex County, it is worth more than 18% 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 Dupont Ave, Piscataway, NJ?

The 2025 property tax bill for 21 Dupont Ave, Piscataway, NJ was $7,192. The county assessed it at $454,300.

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Assigned schools

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