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Single Family ResidenceResidential
$648,810$410 / 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 Aug 30, 2026

23 HARDENBERG ST

NEW BRUNSWICK, NJ 08901
0
Baths
1,584 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.
2,500 ft²
Lot SizeThe size of the land the home sits on, from county records.
1872
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$649K
$593K low$704K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,531 (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.$466,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$190,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$276,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$466,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$466,200

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.41
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
66
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
92
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.

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
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyMIDDLESEX
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.Brick
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
Lincoln Annex SchoolB-
Middle · Grades 4–8 · 0.1 mi
E
Lincoln Elemmentary SchoolC-
Elementary · Grades KG–3 · 0.3 mi
H
New Brunswick High SchoolD-
High · Grades 9–12 · 2.0 mi

District: New Brunswick City School District

Neighborhood · ZIP 08901These 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.145
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.102

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.29%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.56,962
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,584 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$59,508
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,819
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%

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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

23 Hardenberg 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 88% of homes in New Brunswick 08901
  • Costs more per square foot than 89% of homes in New Brunswick 08901
  • Has a smaller lot than 77% of homes in Middlesex County
  • Among the oldest homes in Middlesex County

What homes are worth in New Brunswick 08901

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

This home
$231K$910K

This home is worth more than 88% of homes in New Brunswick 08901.

How it measures up in New Brunswick 08901

The dot is this home. The mark in the middle is the typical home in New Brunswick 08901.

Estimated value$648,810
CheaperTypical $438,672Pricier

Pricier than 88% of homes nearby

Price per ft²$410
CheaperTypical $298Pricier

Pricier than 89% of homes nearby

Living area1,584 ft²
SmallerTypical 1,528 ft²Bigger

Bigger than 54% of homes nearby

Lot size2,500 ft²
SmallerTypical 3,311 ft²Bigger

Bigger than 37% of homes nearby

Year built1872
OlderTypical 1920Newer

Newer than 3% of homes nearby

How 23 Hardenberg St ranks against every home in each area.
MeasureThis homeRutgers University / New Brunswick / College AvenueNew Brunswick 08901Middlesex County
Estimated valuepricier than$648,81026% of homes88% of homes64% of homes
Price per ft²pricier than$41020% of homes89% of homes75% of homes
Living areabigger than1,584 ft²37% of homes54% of homes47% of homes
Lot sizebigger than2,500 ft²39% of homes37% of homes23% of homes
Year builtnewer than187222% of homes3% of homesalmost no homes

About 23 Hardenberg St

How much is 23 Hardenberg St, New Brunswick, NJ worth?

The TopHap Estimate for 23 Hardenberg St, New Brunswick, NJ is $648,810 as of Aug 30, 2026. The likely range is $593,326 to $704,294. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23 Hardenberg St, New Brunswick, NJ last sell?

23 Hardenberg St, New Brunswick, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 23 Hardenberg St, New Brunswick, NJ?

23 Hardenberg St, New Brunswick, NJ has 1,584 square feet of living space and a 0.06-acre lot.

When was 23 Hardenberg St, New Brunswick, NJ built?

23 Hardenberg St, New Brunswick, NJ was built in 1872, making it 154 years old. It is a duplex single home. The building has 2 stories.

What schools serve 23 Hardenberg St, New Brunswick, NJ?

23 Hardenberg St, New Brunswick, NJ is assigned to Lincoln Annex School (middle), rated B-; Lincoln Elemmentary School (elementary), rated C-; New Brunswick High School (high), rated D-. All sit in New Brunswick City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23 Hardenberg St, New Brunswick, NJ compare to other homes in New Brunswick 08901?

Among the 6,071 homes in New Brunswick 08901, it is worth more than 88% of them ($648,810 against a typical $438,672), its price per square foot is higher than 89% of them ($410 against a typical $298), it is bigger than 54% of them (1,584 ft² against a typical 1,528 ft²), its lot is bigger than 37% of them (2,500 ft² against a typical 3,311 ft²) and it is newer than 3% of them (1872 against a typical 1920). Measured against all of Middlesex County, it is worth more than 64% 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 23 Hardenberg St, New Brunswick, NJ?

The 2025 property tax bill for 23 Hardenberg St, New Brunswick, NJ was $12,531. The county assessed it at $466,200.

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