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Single Family ResidenceResidential
$542,393$394 / 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 89How 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 $500,000 on Mar 26, 2025

21 JAMES AVE

CLARK, NJ 07066
0
Baths
1,376 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1942
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$542K
$483K low$602K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$500,000 · Mar 26, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,356 (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.$324,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$172,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$152,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$324,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$324,200

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyUNION
Lot (acres)The size of the land the home sits on, from county records.0.12
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

Transaction History(5)

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
Arthur L. Johnson High SchoolB-
High · Grades 9–12 · 1.5 mi
M
Carl H. Kumpf Middle SchoolA-
Middle · Grades 6–8 · 1.9 mi
E
Frank K. Hehnly Elementary SchoolB+
Elementary · Grades KG–5 · 2.4 mi

District: Clark Township School District

Neighborhood · ZIP 07066These 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.48
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 100.108

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.15,791
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,665 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,996
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$150,742
Average tempThe average temperature here across a full year.53°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 James 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 95% of homes in Clark 07066
  • Costs less per square foot than 69% of homes in Clark 07066
  • Smaller than 78% of homes in Clark 07066
  • Has a smaller lot than 83% of homes in Clark 07066
  • Older than 88% of homes in Clark 07066

What homes are worth in Clark 07066

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

This home
$410K$1.4M

This home is worth more than 5% of homes in Clark 07066.

How it measures up in Clark 07066

The dot is this home. The mark in the middle is the typical home in Clark 07066.

Estimated value$542,393
CheaperTypical $759,159Pricier

Pricier than 5% of homes nearby

Price per ft²$394
CheaperTypical $426Pricier

Pricier than 31% of homes nearby

Living area1,376 ft²
SmallerTypical 1,756 ft²Bigger

Bigger than 22% of homes nearby

Lot size0.12 ac
SmallerTypical 0.19 acBigger

Bigger than 17% of homes nearby

Year built1942
OlderTypical 1958Newer

Newer than 12% of homes nearby

How 21 James Ave ranks against every home in each area.
MeasureThis homeClark 07066Union County
Estimated valuepricier than$542,3935% of homes26% of homes
Price per ft²pricier than$39431% of homes46% of homes
Living areabigger than1,376 ft²22% of homes27% of homes
Lot sizebigger than0.12 ac17% of homes37% of homes
Year builtnewer than194212% of homes41% of homes

About 21 James Ave

How much is 21 James Ave, Clark, NJ worth?

The TopHap Estimate for 21 James Ave, Clark, NJ is $542,393 as of Sep 24, 2026. The likely range is $483,068 to $601,718. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 James Ave, Clark, NJ last sell?

21 James Ave, Clark, NJ last sold on Mar 26, 2025 for $500,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 James Ave, Clark, NJ?

21 James Ave, Clark, NJ has 1,376 square feet of living space and a 0.12-acre lot.

When was 21 James Ave, Clark, NJ built?

21 James Ave, Clark, NJ was built in 1942, making it 84 years old. The building has 2 stories.

What schools serve 21 James Ave, Clark, NJ?

21 James Ave, Clark, NJ is assigned to Arthur L. Johnson High School (high), rated B-; Carl H. Kumpf Middle School (middle), rated A-; Frank K. Hehnly Elementary School (elementary), rated B+. All sit in Clark Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 James Ave, Clark, NJ compare to other homes in Clark 07066?

Among the 4,896 homes in Clark 07066, it is worth more than 5% of them ($542,393 against a typical $759,159), its price per square foot is higher than 31% of them ($394 against a typical $426), it is bigger than 22% of them (1,376 ft² against a typical 1,756 ft²), its lot is bigger than 17% of them (0.12 ac against a typical 0.19 ac) and it is newer than 12% of them (1942 against a typical 1958). Measured against all of Union County, it is worth more than 26% 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 James Ave, Clark, NJ?

The 2025 property tax bill for 21 James Ave, Clark, NJ was $7,356. The county assessed it at $324,200.

More homes on James Ave

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More homes in Clark 07066

Assigned schools

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