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Single Family ResidenceResidential
$643,319
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 91How 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 $149,900 on Aug 13, 1993

20 ALLISON ST

SOUTH PLAINFIELD, NJ 07080
0
Baths
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$643K
$586K low$701K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$149,900 · Aug 13, 1993

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,479 (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.$156,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$34,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$122,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$156,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$156,900

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.11%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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.0.27
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

H
South Plainfield High SchoolB-
High · Grades 9–12 · 0.3 mi
E
John E. Riley Elementary SchoolA
Elementary · Grades KG–4 · 0.3 mi
M
South Plainfield Middle SchoolC+
Middle · Grades 7–8 · 0.5 mi

District: South Plainfield Borough School District

Neighborhood · ZIP 07080These 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.35
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.101

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.25,481
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,053 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,850
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$145,590
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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 Allison 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 76% of homes in South Plainfield 07080
  • Has a bigger lot than 79% of homes in South Plainfield 07080

What homes are worth in South Plainfield 07080

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

This home
$404K$912K

This home is worth more than 76% of homes in South Plainfield 07080.

How it measures up in South Plainfield 07080

The dot is this home. The mark in the middle is the typical home in South Plainfield 07080.

Estimated value$643,319
CheaperTypical $566,158Pricier

Pricier than 76% of homes nearby

Lot size0.26 ac
SmallerTypical 0.21 acBigger

Bigger than 79% of homes nearby

How 20 Allison St ranks against every home in each area.
MeasureThis homeSouth Plainfield 07080Middlesex County
Estimated valuepricier than$643,31976% of homes63% of homes
Lot sizebigger than0.26 ac79% of homes78% of homes

About 20 Allison St

How much is 20 Allison St, South Plainfield, NJ worth?

The TopHap Estimate for 20 Allison St, South Plainfield, NJ is $643,319 as of Aug 30, 2026. The likely range is $585,961 to $700,677. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Allison St, South Plainfield, NJ last sell?

20 Allison St, South Plainfield, NJ last sold on Aug 13, 1993 for $149,900, according to the county's recorded deed.

What schools serve 20 Allison St, South Plainfield, NJ?

20 Allison St, South Plainfield, NJ is assigned to South Plainfield High School (high), rated B-; John E. Riley Elementary School (elementary), rated A; South Plainfield Middle School (middle), rated C+. All sit in South Plainfield Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Allison St, South Plainfield, NJ compare to other homes in South Plainfield 07080?

Among the 7,536 homes in South Plainfield 07080, it is worth more than 76% of them ($643,319 against a typical $566,158) and its lot is bigger than 79% of them (0.26 ac against a typical 0.21 ac). Measured against all of Middlesex County, it is worth more than 63% 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 Allison St, South Plainfield, NJ?

The 2025 property tax bill for 20 Allison St, South Plainfield, NJ was $11,479. The county assessed it at $156,900.

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