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Single Family ResidenceResidential
$367,638$471 / 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 Oct 21, 2026
Last sold for $100,000 on Oct 12, 2021

520 JOHN ST

SOUTH AMBOY, NJ 08879
0
Baths
780 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.
1930
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$368K
$327K low$408K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$100,000 · Oct 12, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,469 (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.$170,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$125,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$45,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$170,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$170,000

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.Ranch
CountyMIDDLESEX
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(1)

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.

E
South Amboy Elementary SchoolD+
Elementary · Grades PK–6 · 0.5 mi
M
South Amboy Middle High SchoolD
Middle · Grades 7–12 · 0.8 mi

District: South Amboy City School District

Neighborhood · ZIP 08879These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.102

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.1%
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.23,254
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,866 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,649
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,457
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%

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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

520 John 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 92% of homes in South Amboy 08879
  • Costs more per square foot than 89% of homes in Middlesex County
  • Smaller than 97% of homes in Middlesex County
  • Has a smaller lot than 68% of homes in Middlesex County
  • Older than 87% of homes in Middlesex County

What homes are worth in South Amboy 08879

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

This home
$309K$985K

This home is worth more than 8% of homes in South Amboy 08879.

How it measures up in South Amboy 08879

The dot is this home. The mark in the middle is the typical home in South Amboy 08879.

Estimated value$367,638
CheaperTypical $523,136Pricier

Pricier than 8% of homes nearby

Price per ft²$471
CheaperTypical $377Pricier

Pricier than 84% of homes nearby

Living area780 ft²
SmallerTypical 1,414 ft²Bigger

Bigger than 8% of homes nearby

Lot size0.11 ac
SmallerTypical 0.11 acBigger

Bigger than 33% of homes nearby

Year built1930
OlderTypical 1954Newer

Newer than 28% of homes nearby

How 520 John St ranks against every home in each area.
MeasureThis homeSouth Amboy 08879Middlesex County
Estimated valuepricier than$367,6388% of homes8% of homes
Price per ft²pricier than$47184% of homes89% of homes
Living areabigger than780 ft²8% of homes3% of homes
Lot sizebigger than0.11 ac33% of homes32% of homes
Year builtnewer than193028% of homes13% of homes

About 520 John St

How much is 520 John St, South Amboy, NJ worth?

The TopHap Estimate for 520 John St, South Amboy, NJ is $367,638 as of Oct 21, 2026. The likely range is $327,023 to $408,253. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 520 John St, South Amboy, NJ last sell?

520 John St, South Amboy, NJ last sold on Oct 12, 2021 for $100,000, according to the county's recorded deed.

How big is 520 John St, South Amboy, NJ?

520 John St, South Amboy, NJ has 780 square feet of living space and a 0.12-acre lot.

When was 520 John St, South Amboy, NJ built?

520 John St, South Amboy, NJ was built in 1930, making it 96 years old. It is a ranch home. The building has 1 story.

What schools serve 520 John St, South Amboy, NJ?

520 John St, South Amboy, NJ is assigned to South Amboy Elementary School (elementary), rated D+; South Amboy Middle High School (middle), rated D. All sit in South Amboy City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 520 John St, South Amboy, NJ compare to other homes in South Amboy 08879?

Among the 7,042 homes in South Amboy 08879, it is worth more than 8% of them ($367,638 against a typical $523,136), its price per square foot is higher than 84% of them ($471 against a typical $377), it is bigger than 8% of them (780 ft² against a typical 1,414 ft²), its lot is bigger than 33% of them (0.11 ac against a typical 0.11 ac) and it is newer than 28% of them (1930 against a typical 1954). Measured against all of Middlesex County, it is worth more than 8% 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 520 John St, South Amboy, NJ?

The 2025 property tax bill for 520 John St, South Amboy, NJ was $5,469. The county assessed it at $170,000.

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Assigned schools

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