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Residential (General/Single)Residential
$2,536,800$506 / 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 86How 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 $2,500,000 on Jul 23, 2026

45 WILLIAM ST

DEMAREST, NJ 07627
0
Baths
5,009 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.
0.39 ac
Lot SizeThe size of the land the home sits on, from county records.
2009
Year BuiltThe year the home was originally built, according to county records.

Valuation

$2.5M
$2.2M low$2.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,500,000 · Jul 23, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$39,428 (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.$2,184,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$754,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,430,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$904,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,184,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyBERGEN
Lot (acres)The size of the land the home sits on, from county records.0.39
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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.

E
County Road Elementary School
Elementary · Grades KG–1 · 0.2 mi
M
Demarest Middle SchoolA-
Middle · Grades 5–8 · 0.7 mi
H
Northern Valley Regional High School at DemarestA+
High · Grades 9–12 · 1.3 mi

District: Northern Valley Regional School District

Neighborhood · ZIP 07627These 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.29
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.123
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.119

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.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.0.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.5,132
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,441 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$170,274
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$259,946
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

45 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 more than 98% of homes in Bergen County
  • Costs less per square foot than 82% of homes in Demarest 07627
  • Bigger than 97% of homes in Bergen County
  • Has a bigger lot than 81% of homes in Bergen County
  • Newer than 95% of homes in Bergen County

What homes are worth in Demarest 07627

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

This home
$823K$4.4M

This home is worth more than 80% of homes in Demarest 07627.

How it measures up in Demarest 07627

The dot is this home. The mark in the middle is the typical home in Demarest 07627.

Estimated value$2,536,800
CheaperTypical $1,613,261Pricier

Pricier than 80% of homes nearby

Price per ft²$506
CheaperTypical $604Pricier

Pricier than 18% of homes nearby

Living area5,009 ft²
SmallerTypical 2,708 ft²Bigger

Bigger than 89% of homes nearby

Lot size0.39 ac
SmallerTypical 0.28 acBigger

Bigger than 70% of homes nearby

Year built2009
OlderTypical 1962Newer

Newer than 84% of homes nearby

How 45 William St ranks against every home in each area.
MeasureThis homeDemarest 07627Bergen County
Estimated valuepricier than$2,536,80080% of homes98% of homes
Price per ft²pricier than$50618% of homes76% of homes
Living areabigger than5,009 ft²89% of homes97% of homes
Lot sizebigger than0.39 ac70% of homes81% of homes
Year builtnewer than200984% of homes95% of homes

About 45 William St

How much is 45 William St, Demarest, NJ worth?

The TopHap Estimate for 45 William St, Demarest, NJ is $2,536,800 as of Sep 24, 2026. The likely range is $2,186,888 to $2,886,712. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 45 William St, Demarest, NJ last sell?

45 William St, Demarest, NJ last sold on Jul 23, 2026 for $2,500,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 45 William St, Demarest, NJ?

45 William St, Demarest, NJ has 5,009 square feet of living space and a 0.39-acre lot.

When was 45 William St, Demarest, NJ built?

45 William St, Demarest, NJ was built in 2009, making it 17 years old.

What schools serve 45 William St, Demarest, NJ?

45 William St, Demarest, NJ is assigned to County Road Elementary School (elementary); Demarest Middle School (middle), rated A-; Northern Valley Regional High School at Demarest (high), rated A+. All sit in Northern Valley Regional School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 45 William St, Demarest, NJ compare to other homes in Demarest 07627?

Among the 1,693 homes in Demarest 07627, it is worth more than 80% of them ($2,536,800 against a typical $1,613,261), its price per square foot is higher than 18% of them ($506 against a typical $604), it is bigger than 89% of them (5,009 ft² against a typical 2,708 ft²), its lot is bigger than 70% of them (0.39 ac against a typical 0.28 ac) and it is newer than 84% of them (2009 against a typical 1962). Measured against all of Bergen County, it is worth more than 98% 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 45 William St, Demarest, NJ?

The 2025 property tax bill for 45 William St, Demarest, NJ was $39,428. The county assessed it at $2,184,400.

More homes on William St

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Assigned schools

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