Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$397,188$402 / 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 Aug 30, 2026
Last sold for $49,000 on Aug 26, 2013

521 LEO ST

HILLSIDE, NJ 07205
0
Baths
988 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.
2,500 ft²
Lot SizeThe size of the land the home sits on, from county records.
1954
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$397K
$366K low$428K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$49,000 · Aug 26, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,309 (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.$70,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$25,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$45,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$70,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$70,900

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.Colonial
CountyUNION
Lot (acres)The size of the land the home sits on, from county records.0.06
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(7)

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(1)

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

H
Hillside High SchoolD-
High · Grades 9–12 · 0.6 mi
M
Krumbiegel Middle SchoolD
Middle · Grades 6–8 · 0.9 mi
E
Morris Early Childhood Center
Elementary · Grades PK–1 · 1.1 mi

District: Hillside Township School District

Neighborhood · ZIP 07205These 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.90
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
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.22,864
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,391 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,810
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,567
Average tempThe average temperature here across a full year.54°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.56%

Owner Tools

Do you own this home?
Claim this home

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

521 Leo 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 95% of homes in Union County
  • Costs more per square foot than 87% of homes in Hillside 07205
  • Smaller than 95% of homes in Hillside 07205
  • Has a smaller lot than 93% of homes in Hillside 07205
  • Newer than 81% of homes in Hillside 07205

What homes are worth in Hillside 07205

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

This home
$327K$801K

This home is worth more than 8% of homes in Hillside 07205.

How it measures up in Hillside 07205

The dot is this home. The mark in the middle is the typical home in Hillside 07205.

Estimated value$397,188
CheaperTypical $526,516Pricier

Pricier than 8% of homes nearby

Price per ft²$402
CheaperTypical $326Pricier

Pricier than 87% of homes nearby

Living area988 ft²
SmallerTypical 1,624 ft²Bigger

Bigger than 5% of homes nearby

Lot size2,500 ft²
SmallerTypical 4,182 ft²Bigger

Bigger than 7% of homes nearby

Year built1954
OlderTypical 1929Newer

Newer than 81% of homes nearby

How 521 Leo St ranks against every home in each area.
MeasureThis homeHillside 07205Union County
Estimated valuepricier than$397,1888% of homes5% of homes
Price per ft²pricier than$40287% of homes49% of homes
Living areabigger than988 ft²5% of homes9% of homes
Lot sizebigger than2,500 ft²7% of homes8% of homes
Year builtnewer than195481% of homes61% of homes

About 521 Leo St

How much is 521 Leo St, Hillside, NJ worth?

The TopHap Estimate for 521 Leo St, Hillside, NJ is $397,188 as of Aug 30, 2026. The likely range is $366,482 to $427,894. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Leo St, Hillside, NJ last sell?

521 Leo St, Hillside, NJ last sold on Aug 26, 2013 for $49,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 521 Leo St, Hillside, NJ?

521 Leo St, Hillside, NJ has 988 square feet of living space and a 0.06-acre lot.

When was 521 Leo St, Hillside, NJ built?

521 Leo St, Hillside, NJ was built in 1954, making it 72 years old. It is a colonial home. The building has 2 stories.

What schools serve 521 Leo St, Hillside, NJ?

521 Leo St, Hillside, NJ is assigned to Hillside High School (high), rated D-; Krumbiegel Middle School (middle), rated D; Morris Early Childhood Center (elementary). All sit in Hillside Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Leo St, Hillside, NJ compare to other homes in Hillside 07205?

Among the 5,784 homes in Hillside 07205, it is worth more than 8% of them ($397,188 against a typical $526,516), its price per square foot is higher than 87% of them ($402 against a typical $326), it is bigger than 5% of them (988 ft² against a typical 1,624 ft²), its lot is bigger than 7% of them (2,500 ft² against a typical 4,182 ft²) and it is newer than 81% of them (1954 against a typical 1929). Measured against all of Union County, it is worth more than 5% 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 521 Leo St, Hillside, NJ?

The 2025 property tax bill for 521 Leo St, Hillside, NJ was $6,309. The county assessed it at $70,900.

More homes on Leo St

Closest homes

More homes in Hillside 07205

Assigned schools

Explore the area

See this home in context

Open 521 Leo St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map