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Single Family ResidenceResidential
$770,529$207 / 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 $375,000 on Feb 29, 2016

331 WILLIAM ST

BOONTON, NJ 07005
0
Baths
3,724 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$771K
$722K low$819K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$375,000 · Feb 29, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,200 (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.$449,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$166,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$283,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$449,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$449,700

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.0.25
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(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

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

H
Boonton High SchoolB-
High · Grades 9–12 · 0.4 mi
E
John Hill SchoolB
Elementary · Grades 1–8 · 0.5 mi

District: Boonton Town School District

Neighborhood · ZIP 07005These 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.128
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.107

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.4%
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.18,320
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.907 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$125,909
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$146,412
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.52 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

331 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.

  • Among the lowest price per square foot in Boonton 07005
  • Bigger than 92% of homes in Morris County
  • Has a smaller lot than 68% of homes in Boonton 07005
  • Older than 96% of homes in Morris County

What homes are worth in Boonton 07005

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

This home
$435K$1.9M

This home is worth more than 57% of homes in Boonton 07005.

How it measures up in Boonton 07005

The dot is this home. The mark in the middle is the typical home in Boonton 07005.

Estimated value$770,529
CheaperTypical $732,389Pricier

Pricier than 57% of homes nearby

Price per ft²$207
CheaperTypical $362Pricier

Cheaper than almost all homes nearby

Living area3,724 ft²
SmallerTypical 2,033 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.25 ac
SmallerTypical 0.38 acBigger

Bigger than 32% of homes nearby

Year built1900
OlderTypical 1956Newer

Newer than 15% of homes nearby

How 331 William St ranks against every home in each area.
MeasureThis homeBoonton 07005Morris County
Estimated valuepricier than$770,52957% of homes56% of homes
Price per ft²pricier than$207almost no homesalmost no homes
Living areabigger than3,724 ft²91% of homes92% of homes
Lot sizebigger than0.25 ac32% of homes38% of homes
Year builtnewer than190015% of homes4% of homes

About 331 William St

How much is 331 William St, Boonton, NJ worth?

The TopHap Estimate for 331 William St, Boonton, NJ is $770,529 as of Sep 24, 2026. The likely range is $721,793 to $819,265. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 331 William St, Boonton, NJ last sell?

331 William St, Boonton, NJ last sold on Feb 29, 2016 for $375,000, according to the county's recorded deed.

How big is 331 William St, Boonton, NJ?

331 William St, Boonton, NJ has 3,724 square feet of living space and a 0.25-acre lot.

When was 331 William St, Boonton, NJ built?

331 William St, Boonton, NJ was built in 1900, making it 126 years old. The building has 2 stories.

What schools serve 331 William St, Boonton, NJ?

331 William St, Boonton, NJ is assigned to Boonton High School (high), rated B-; John Hill School (elementary), rated B. All sit in Boonton Town School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 331 William St, Boonton, NJ compare to other homes in Boonton 07005?

Among the 4,974 homes in Boonton 07005, it is worth more than 57% of them ($770,529 against a typical $732,389), its price per square foot is higher than almost none of them ($207 against a typical $362), it is bigger than 91% of them (3,724 ft² against a typical 2,033 ft²), its lot is bigger than 32% of them (0.25 ac against a typical 0.38 ac) and it is newer than 15% of them (1900 against a typical 1956). Measured against all of Morris County, it is worth more than 56% 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 331 William St, Boonton, NJ?

The 2024 property tax bill for 331 William St, Boonton, NJ was $15,200. The county assessed it at $449,700.

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