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Single Family ResidenceResidential
$533,971$433 / 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 $520,000 on May 5, 2026

19 WILLIAM ST

MONTCLAIR, NJ 07042
0
Baths
1,232 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.
2,400 ft²
Lot SizeThe size of the land the home sits on, from county records.
1865
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$534K
$477K low$591K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$520,000 · May 5, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,426 (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.$268,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$211,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$56,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$268,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$268,100

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyESSEX
Lot (acres)The size of the land the home sits on, from county records.0.06
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.

H
Montclair High SchoolC+
High · Grades 9–12 · 0.3 mi
M
Renaissance Middle School at the Rand BuildingA-
Middle · Grades 6–8 · 0.3 mi
E
Edgemont Elementary SchoolA-
Elementary · Grades KG–5 · 0.6 mi

District: Montclair Town School District

Neighborhood · ZIP 07042These 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.83
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.27,494
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,244 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,077
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$183,948
Average tempThe average temperature here across a full year.52°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

19 William 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 89% of homes in Montclair 07042
  • Costs less per square foot than 65% of homes in Montclair 07042
  • Smaller than 88% of homes in Essex County
  • Has a smaller lot than 98% of homes in Montclair 07042
  • Among the oldest homes in Montclair 07042

What homes are worth in Montclair 07042

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

This home
$332K$3M

This home is worth more than 11% of homes in Montclair 07042.

How it measures up in Montclair 07042

The dot is this home. The mark in the middle is the typical home in Montclair 07042.

Estimated value$533,971
CheaperTypical $1,017,120Pricier

Pricier than 11% of homes nearby

Price per ft²$433
CheaperTypical $477Pricier

Pricier than 35% of homes nearby

Living area1,232 ft²
SmallerTypical 2,308 ft²Bigger

Bigger than 14% of homes nearby

Lot size2,400 ft²
SmallerTypical 0.22 acBigger

Bigger than 2% of homes nearby

Year built1865
OlderTypical 1922Newer

Older than almost all homes nearby

How 19 William St ranks against every home in each area.
MeasureThis homeMontclair 07042Essex County
Estimated valuepricier than$533,97111% of homes23% of homes
Price per ft²pricier than$43335% of homes65% of homes
Living areabigger than1,232 ft²14% of homes12% of homes
Lot sizebigger than2,400 ft²2% of homes8% of homes
Year builtnewer than1865almost no homesalmost no homes

About 19 William St

How much is 19 William St, Montclair, NJ worth?

The TopHap Estimate for 19 William St, Montclair, NJ is $533,971 as of Oct 21, 2026. The likely range is $477,048 to $590,894. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 19 William St, Montclair, NJ last sell?

19 William St, Montclair, NJ last sold on May 5, 2026 for $520,000, according to the county's recorded deed.

How big is 19 William St, Montclair, NJ?

19 William St, Montclair, NJ has 1,232 square feet of living space and a 0.06-acre lot.

When was 19 William St, Montclair, NJ built?

19 William St, Montclair, NJ was built in 1865, making it 161 years old. The building has 2 stories.

What schools serve 19 William St, Montclair, NJ?

19 William St, Montclair, NJ is assigned to Montclair High School (high), rated C+; Renaissance Middle School at the Rand Building (middle), rated A-; Edgemont Elementary School (elementary), rated A-. All sit in Montclair Town School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 19 William St, Montclair, NJ compare to other homes in Montclair 07042?

Among the 6,114 homes in Montclair 07042, it is worth more than 11% of them ($533,971 against a typical $1,017,120), its price per square foot is higher than 35% of them ($433 against a typical $477), it is bigger than 14% of them (1,232 ft² against a typical 2,308 ft²), its lot is bigger than 2% of them (2,400 ft² against a typical 0.22 ac) and it is newer than almost none of them (1865 against a typical 1922). Measured against all of Essex County, it is worth more than 23% 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 19 William St, Montclair, NJ?

The 2025 property tax bill for 19 William St, Montclair, NJ was $9,426. The county assessed it at $268,100.

More homes on William St

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Assigned schools

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