Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$571,976$396 / 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 88How 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 $550,000 on Feb 15, 2024

233 WILLIAMSON AVE

HILLSIDE, NJ 07205
0
Baths
1,444 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.
3,302 ft²
Lot SizeThe size of the land the home sits on, from county records.
1925
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

$572K
$501K low$643K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$550,000 · Feb 15, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,410 (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.$94,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$36,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$58,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$94,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$94,500

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.0.08
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(3)

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(7)

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

M
Krumbiegel Middle SchoolD-
Middle · Grades 6–8 · 0.4 mi
E
Morris Early Childhood Center
Elementary · Grades PK–1 · 0.9 mi
H
Hillside High SchoolD
High · Grades 9–12 · 1.2 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

233 Williamson 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 67% of homes in Hillside 07205
  • Costs more per square foot than 85% of homes in Hillside 07205
  • Smaller than 69% of homes in Union County
  • Has a smaller lot than 89% of homes in Union County
  • Older than 78% of homes in Union County

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
$312K$828K

This home is worth more than 67% 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$571,976
CheaperTypical $531,956Pricier

Pricier than 67% of homes nearby

Price per ft²$396
CheaperTypical $324Pricier

Pricier than 85% of homes nearby

Living area1,444 ft²
SmallerTypical 1,620 ft²Bigger

Bigger than 35% of homes nearby

Lot size3,302 ft²
SmallerTypical 4,182 ft²Bigger

Bigger than 13% of homes nearby

Year built1925
OlderTypical 1929Newer

Newer than 32% of homes nearby

How 233 Williamson Ave ranks against every home in each area.
MeasureThis homeHillside 07205Union County
Estimated valuepricier than$571,97667% of homes33% of homes
Price per ft²pricier than$39685% of homes47% of homes
Living areabigger than1,444 ft²35% of homes31% of homes
Lot sizebigger than3,302 ft²13% of homes11% of homes
Year builtnewer than192532% of homes22% of homes

About 233 Williamson Ave

How much is 233 Williamson Ave, Hillside, NJ worth?

The TopHap Estimate for 233 Williamson Ave, Hillside, NJ is $571,976 as of Sep 24, 2026. The likely range is $500,669 to $643,283. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 233 Williamson Ave, Hillside, NJ last sell?

233 Williamson Ave, Hillside, NJ last sold on Feb 15, 2024 for $550,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 233 Williamson Ave, Hillside, NJ?

233 Williamson Ave, Hillside, NJ has 1,444 square feet of living space and a 0.08-acre lot.

When was 233 Williamson Ave, Hillside, NJ built?

233 Williamson Ave, Hillside, NJ was built in 1925, making it 101 years old. It is a colonial home. The building has 2 stories.

What schools serve 233 Williamson Ave, Hillside, NJ?

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

How does 233 Williamson Ave, Hillside, NJ compare to other homes in Hillside 07205?

Among the 5,784 homes in Hillside 07205, it is worth more than 67% of them ($571,976 against a typical $531,956), its price per square foot is higher than 85% of them ($396 against a typical $324), it is bigger than 35% of them (1,444 ft² against a typical 1,620 ft²), its lot is bigger than 13% of them (3,302 ft² against a typical 4,182 ft²) and it is newer than 32% of them (1925 against a typical 1929). Measured against all of Union County, it is worth more than 33% 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 233 Williamson Ave, Hillside, NJ?

The 2025 property tax bill for 233 Williamson Ave, Hillside, NJ was $8,410. The county assessed it at $94,500.

More homes on Williamson Ave

Closest homes

More homes in Hillside 07205

Assigned schools

Explore the area

See this home in context

Open 233 Williamson Ave 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