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Single Family ResidenceResidential
$805,553$218 / 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 94How 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 $245,000 on Nov 8, 2004

421 JOHNSTONE ST

PERTH AMBOY, NJ 08861
0
Baths
3,688 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.
1914
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$806K
$756K low$855K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$245,000 · Nov 8, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,066 (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.$442,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$105,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$337,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$442,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$442,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.13
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.

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

E
Anthony V. Ceres Elementary SchoolD
Elementary · Grades KG–5 · 0.5 mi
H
Perth Amboy High SchoolD
High · Grades 9–12 · 0.6 mi
M
William C. Mcginnis Middle SchoolD-
Middle · Grades 6–8 · 0.6 mi

District: Perth Amboy City School District

Neighborhood · ZIP 08861These 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.124
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.109

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.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.59,006
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.9,525 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$58,231
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,503
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

421 Johnstone 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 more than 98% of homes in Perth Amboy 08861
  • Among the lowest price per square foot in Middlesex County
  • Bigger than 97% of homes in Perth Amboy 08861
  • Has a bigger lot than 79% of homes in Perth Amboy 08861
  • Older than 95% of homes in Middlesex County

What homes are worth in Perth Amboy 08861

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

This home
$275K$781K

This home is worth more than 98% of homes in Perth Amboy 08861.

How it measures up in Perth Amboy 08861

The dot is this home. The mark in the middle is the typical home in Perth Amboy 08861.

Estimated value$805,553
CheaperTypical $479,921Pricier

Pricier than 98% of homes nearby

Price per ft²$218
CheaperTypical $313Pricier

Pricier than 4% of homes nearby

Living area3,688 ft²
SmallerTypical 1,584 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.12 ac
SmallerTypical 3,746 ft²Bigger

Bigger than 79% of homes nearby

Year built1914
OlderTypical 1929Newer

Newer than 27% of homes nearby

How 421 Johnstone St ranks against every home in each area.
MeasureThis homePerth Amboy 08861Middlesex County
Estimated valuepricier than$805,55398% of homes82% of homes
Price per ft²pricier than$2184% of homesalmost no homes
Living areabigger than3,688 ft²97% of homes97% of homes
Lot sizebigger than0.12 ac79% of homes42% of homes
Year builtnewer than191427% of homes5% of homes

About 421 Johnstone St

How much is 421 Johnstone St, Perth Amboy, NJ worth?

The TopHap Estimate for 421 Johnstone St, Perth Amboy, NJ is $805,553 as of Sep 24, 2026. The likely range is $756,315 to $854,791. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Johnstone St, Perth Amboy, NJ last sell?

421 Johnstone St, Perth Amboy, NJ last sold on Nov 8, 2004 for $245,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 421 Johnstone St, Perth Amboy, NJ?

421 Johnstone St, Perth Amboy, NJ has 3,688 square feet of living space and a 0.13-acre lot.

When was 421 Johnstone St, Perth Amboy, NJ built?

421 Johnstone St, Perth Amboy, NJ was built in 1914, making it 112 years old. The building has 2 stories.

What schools serve 421 Johnstone St, Perth Amboy, NJ?

421 Johnstone St, Perth Amboy, NJ is assigned to Anthony V. Ceres Elementary School (elementary), rated D; Perth Amboy High School (high), rated D; William C. Mcginnis Middle School (middle), rated D-. All sit in Perth Amboy City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Johnstone St, Perth Amboy, NJ compare to other homes in Perth Amboy 08861?

Among the 8,555 homes in Perth Amboy 08861, it is worth more than 98% of them ($805,553 against a typical $479,921), its price per square foot is higher than 4% of them ($218 against a typical $313), it is bigger than 97% of them (3,688 ft² against a typical 1,584 ft²), its lot is bigger than 79% of them (0.12 ac against a typical 3,746 ft²) and it is newer than 27% of them (1914 against a typical 1929). Measured against all of Middlesex County, it is worth more than 82% 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 421 Johnstone St, Perth Amboy, NJ?

The 2025 property tax bill for 421 Johnstone St, Perth Amboy, NJ was $14,066. The county assessed it at $442,600.

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