Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$531,741$490 / 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 91How 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 $244,000 on Sep 14, 2016

21 JOHN ST

EDISON, NJ 08837
0
Baths
1,086 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$532K
$487K low$577K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$244,000 · Sep 14, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,653 (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.$128,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$81,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$47,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$128,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$128,600

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.42
12
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
87
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.2 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.0.19
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.

M
Herbert Hoover Middle SchoolC+
Middle · Grades 6–8 · 0.4 mi
E
Lincoln Elementary SchoolA-
Elementary · Grades KG–5 · 2.4 mi
H
Edison High SchoolC-
High · Grades 9–12 · 2.9 mi

District: Edison Township School District

Neighborhood · ZIP 08837These 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.101
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.106

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.2%
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.19,280
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,979 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$95,956
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$120,434
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%

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

21 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.

  • Costs more per square foot than 92% of homes in Middlesex County
  • Smaller than 85% of homes in Middlesex County
  • Has a bigger lot than 74% of homes in Edison 08837

What homes are worth in Edison 08837

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

This home
$235K$1.1M

This home is worth more than 44% of homes in Edison 08837.

How it measures up in Edison 08837

The dot is this home. The mark in the middle is the typical home in Edison 08837.

Estimated value$531,741
CheaperTypical $551,477Pricier

Pricier than 44% of homes nearby

Price per ft²$490
CheaperTypical $404Pricier

Pricier than 80% of homes nearby

Living area1,086 ft²
SmallerTypical 1,300 ft²Bigger

Bigger than 31% of homes nearby

Lot size0.19 ac
SmallerTypical 0.14 acBigger

Bigger than 74% of homes nearby

Year built1957
OlderTypical 1961Newer

Newer than 44% of homes nearby

How 21 John St ranks against every home in each area.
MeasureThis homeEdison 08837Middlesex County
Estimated valuepricier than$531,74144% of homes38% of homes
Price per ft²pricier than$49080% of homes92% of homes
Living areabigger than1,086 ft²31% of homes15% of homes
Lot sizebigger than0.19 ac74% of homes64% of homes
Year builtnewer than195744% of homes36% of homes

About 21 John St

How much is 21 John St, Edison, NJ worth?

The TopHap Estimate for 21 John St, Edison, NJ is $531,741 as of Oct 21, 2026. The likely range is $486,503 to $576,979. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 John St, Edison, NJ last sell?

21 John St, Edison, NJ last sold on Sep 14, 2016 for $244,000, according to the county's recorded deed.

How big is 21 John St, Edison, NJ?

21 John St, Edison, NJ has 1,086 square feet of living space and a 0.19-acre lot.

When was 21 John St, Edison, NJ built?

21 John St, Edison, NJ was built in 1957, making it 69 years old. The building has 1 story.

What schools serve 21 John St, Edison, NJ?

21 John St, Edison, NJ is assigned to Herbert Hoover Middle School (middle), rated C+; Lincoln Elementary School (elementary), rated A-; Edison High School (high), rated C-. All sit in Edison Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 John St, Edison, NJ compare to other homes in Edison 08837?

Among the 3,802 homes in Edison 08837, it is worth more than 44% of them ($531,741 against a typical $551,477), its price per square foot is higher than 80% of them ($490 against a typical $404), it is bigger than 31% of them (1,086 ft² against a typical 1,300 ft²), its lot is bigger than 74% of them (0.19 ac against a typical 0.14 ac) and it is newer than 44% of them (1957 against a typical 1961). Measured against all of Middlesex County, it is worth more than 38% 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 21 John St, Edison, NJ?

The 2025 property tax bill for 21 John St, Edison, NJ was $7,653. The county assessed it at $128,600.

More homes on John St

Closest homes

More homes in Edison 08837

Assigned schools

Explore the area

See this home in context

Open 21 John 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