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Single Family ResidenceResidential
$875,286$442 / 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 92How 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 $515,000 on Apr 5, 2019

20 UNION AVE

MAPLEWOOD, NJ 07040
0
Baths
1,980 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$875K
$802K low$948K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$515,000 · Apr 5, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,902 (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.$745,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$292,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$453,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$745,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$745,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyESSEX
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(8)

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(3)

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

E
Clinton Elementary SchoolB+
Elementary · Grades KG–5 · 0.2 mi
H
Columbia High SchoolB-
High · Grades 9–12 · 0.8 mi
M
South Orange Middle SchoolB+
Middle · Grades 6–8 · 1.0 mi

District: South Orange-Maplewood School District

Neighborhood · ZIP 07040These 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.38
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.113

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.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.25,720
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,897 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$164,365
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$201,759
Average tempThe average temperature here across a full year.53°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.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

20 Union 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 more than 69% of homes in Essex County
  • Costs less per square foot than 70% of homes in Maplewood 07040
  • Has a smaller lot than 72% of homes in Maplewood 07040
  • Older than 83% of homes in Maplewood 07040

What homes are worth in Maplewood 07040

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

This home
$319K$2.1M

This home is worth more than 40% of homes in Maplewood 07040.

How it measures up in Maplewood 07040

The dot is this home. The mark in the middle is the typical home in Maplewood 07040.

Estimated value$875,286
CheaperTypical $985,385Pricier

Pricier than 40% of homes nearby

Price per ft²$442
CheaperTypical $499Pricier

Pricier than 30% of homes nearby

Living area1,980 ft²
SmallerTypical 1,936 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.11 ac
SmallerTypical 0.15 acBigger

Bigger than 28% of homes nearby

Year built1920
OlderTypical 1927Newer

Newer than 17% of homes nearby

How 20 Union Ave ranks against every home in each area.
MeasureThis homeMaplewood 07040Essex County
Estimated valuepricier than$875,28640% of homes69% of homes
Price per ft²pricier than$44230% of homes67% of homes
Living areabigger than1,980 ft²52% of homes46% of homes
Lot sizebigger than0.11 ac28% of homes39% of homes
Year builtnewer than192017% of homes25% of homes

About 20 Union Ave

How much is 20 Union Ave, Maplewood, NJ worth?

The TopHap Estimate for 20 Union Ave, Maplewood, NJ is $875,286 as of Sep 24, 2026. The likely range is $802,136 to $948,436. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Union Ave, Maplewood, NJ last sell?

20 Union Ave, Maplewood, NJ last sold on Apr 5, 2019 for $515,000, according to the county's recorded deed. TopHap holds 7 recorded sales for this parcel.

How big is 20 Union Ave, Maplewood, NJ?

20 Union Ave, Maplewood, NJ has 1,980 square feet of living space and a 0.12-acre lot.

When was 20 Union Ave, Maplewood, NJ built?

20 Union Ave, Maplewood, NJ was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 20 Union Ave, Maplewood, NJ?

20 Union Ave, Maplewood, NJ is assigned to Clinton Elementary School (elementary), rated B+; Columbia High School (high), rated B-; South Orange Middle School (middle), rated B+. All sit in South Orange-Maplewood School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Union Ave, Maplewood, NJ compare to other homes in Maplewood 07040?

Among the 6,900 homes in Maplewood 07040, it is worth more than 40% of them ($875,286 against a typical $985,385), its price per square foot is higher than 30% of them ($442 against a typical $499), it is bigger than 52% of them (1,980 ft² against a typical 1,936 ft²), its lot is bigger than 28% of them (0.11 ac against a typical 0.15 ac) and it is newer than 17% of them (1920 against a typical 1927). Measured against all of Essex County, it is worth more than 69% 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 20 Union Ave, Maplewood, NJ?

The 2025 property tax bill for 20 Union Ave, Maplewood, NJ was $17,902. The county assessed it at $745,600.

More homes on Union Ave

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Assigned schools

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