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Single Family ResidenceResidential
$1,738,368$639 / 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 90How 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

21 JOHN ST

CHATHAM, NJ 07928
0
Baths
2,722 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1939
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

$1.7M
$1.6M low$1.9M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,715 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,094,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$665,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$428,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,094,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,094,200

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.57
63
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
15
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
64
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
97
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
47
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.28 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
CountyMORRIS
Lot (acres)The size of the land the home sits on, from county records.0.21
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

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

M
Chatham Middle SchoolB+
Middle · Grades 6–8 · 0.3 mi
E
Milton Avenue SchoolA+
Elementary · Grades PK–3 · 0.3 mi
H
Chatham High SchoolB+
High · Grades 9–12 · 1.3 mi

District: The Chathams School District

Neighborhood · ZIP 07928These 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.57
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.112

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.42%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.19,451
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,233 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$208,392
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$282,042
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.51 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

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.

  • Worth more than 96% of homes in Morris County
  • Costs more per square foot than 97% of homes in Morris County
  • Bigger than 76% of homes in Morris County
  • Has a smaller lot than 68% of homes in Morris County
  • Older than 85% of homes in Morris County

What homes are worth in Chatham 07928

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

This home
$431K$3.7M

This home is worth more than 65% of homes in Chatham 07928.

How it measures up in Chatham 07928

The dot is this home. The mark in the middle is the typical home in Chatham 07928.

Estimated value$1,738,368
CheaperTypical $1,454,221Pricier

Pricier than 65% of homes nearby

Price per ft²$639
CheaperTypical $639Pricier

Pricier than 50% of homes nearby

Living area2,722 ft²
SmallerTypical 2,248 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.22 ac
SmallerTypical 0.33 acBigger

Bigger than 33% of homes nearby

Year built1939
OlderTypical 1959Newer

Newer than 20% of homes nearby

How 21 John St ranks against every home in each area.
MeasureThis homeChatham 07928Morris County
Estimated valuepricier than$1,738,36865% of homes96% of homes
Price per ft²pricier than$63950% of homes97% of homes
Living areabigger than2,722 ft²66% of homes76% of homes
Lot sizebigger than0.22 ac33% of homes32% of homes
Year builtnewer than193920% of homes15% of homes

About 21 John St

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

The TopHap Estimate for 21 John St, Chatham, NJ is $1,738,368 as of Aug 30, 2026. The likely range is $1,562,307 to $1,914,429. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

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

21 John St, Chatham, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 John St, Chatham, NJ?

21 John St, Chatham, NJ has 2,722 square feet of living space and a 0.21-acre lot.

When was 21 John St, Chatham, NJ built?

21 John St, Chatham, NJ was built in 1939, making it 87 years old. The building has 2 stories.

What schools serve 21 John St, Chatham, NJ?

21 John St, Chatham, NJ is assigned to Chatham Middle School (middle), rated B+; Milton Avenue School (elementary), rated A+; Chatham High School (high), rated B+. All sit in The Chathams School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 John St, Chatham, NJ compare to other homes in Chatham 07928?

Among the 6,434 homes in Chatham 07928, it is worth more than 65% of them ($1,738,368 against a typical $1,454,221), its price per square foot is higher than 50% of them ($639 against a typical $639), it is bigger than 66% of them (2,722 ft² against a typical 2,248 ft²), its lot is bigger than 33% of them (0.22 ac against a typical 0.33 ac) and it is newer than 20% of them (1939 against a typical 1959). Measured against all of Morris County, it is worth more than 96% 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, Chatham, NJ?

The 2024 property tax bill for 21 John St, Chatham, NJ was $17,715. The county assessed it at $1,094,200.

More homes on John St

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