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Single Family ResidenceResidential
$898,601$310 / 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 93How 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

42 FOURTH ST

FLAGTOWN, NJ 08821
0
Baths
2,895 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.
1.33 ac
Lot SizeThe size of the land the home sits on, from county records.
2000
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$899K
$834K low$963K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,025 (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.$651,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$298,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$352,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$632,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$651,100

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.44
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
19
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.
95
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.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

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.Colonial
CountySOMERSET
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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
Hillsborough Township Middle SchoolA-
Middle · Grades 7–8 · 2.1 mi
H
Hillsborough High SchoolA-
High · Grades 9–12 · 2.3 mi
E
Woodfern Elementary SchoolA
Elementary · Grades KG–4 · 4.1 mi

District: Hillsborough Township School District

Neighborhood · ZIP 08821These 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.9
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.93

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.98%
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.1.7%
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.18
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.442 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$153,521
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$173,661
Average tempThe average temperature here across a full year.52°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

42 Fourth 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 73% of homes in Somerset County
  • Costs less per square foot than 75% of homes in Somerset County
  • Bigger than 80% of homes in Somerset County
  • Has a bigger lot than 88% of homes in Somerset County
  • Newer than 88% of homes in Somerset County

What homes are worth in Somerset County

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

This home
$392K$899K

This home is worth more than almost all homes in Somerset County.

How it measures up in Somerset County

The dot is this home. The mark in the middle is the typical home in Somerset County.

Estimated value$898,601
CheaperTypical $662,528Pricier

Pricier than 73% of homes nearby

Price per ft²$310
CheaperTypical $352Pricier

Pricier than 25% of homes nearby

Living area2,895 ft²
SmallerTypical 1,917 ft²Bigger

Bigger than 80% of homes nearby

Lot size1.33 ac
SmallerTypical 0.25 acBigger

Bigger than 88% of homes nearby

Year built2000
OlderTypical 1983Newer

Newer than 88% of homes nearby

How 42 Fourth St ranks against every home in each area.
MeasureThis homeSomerset County
Estimated valuepricier than$898,60173% of homes
Price per ft²pricier than$31025% of homes
Living areabigger than2,895 ft²80% of homes
Lot sizebigger than1.33 ac88% of homes
Year builtnewer than200088% of homes

About 42 Fourth St

How much is 42 Fourth St, Flagtown, NJ worth?

The TopHap Estimate for 42 Fourth St, Flagtown, NJ is $898,601 as of Aug 30, 2026. The likely range is $834,360 to $962,842. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 42 Fourth St, Flagtown, NJ last sell?

42 Fourth St, Flagtown, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

When was 42 Fourth St, Flagtown, NJ built?

42 Fourth St, Flagtown, NJ was built in 2000, making it 26 years old. It is a colonial home. The building has 2 stories.

What schools serve 42 Fourth St, Flagtown, NJ?

42 Fourth St, Flagtown, NJ is assigned to Hillsborough Township Middle School (middle), rated A-; Hillsborough High School (high), rated A-; Woodfern Elementary School (elementary), rated A. All sit in Hillsborough Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 42 Fourth St, Flagtown, NJ compare to other homes in Somerset County?

Among the 104,527 homes in Somerset County, it is worth more than 73% of them ($898,601 against a typical $662,528), its price per square foot is higher than 25% of them ($310 against a typical $352), it is bigger than 80% of them (2,895 ft² against a typical 1,917 ft²), its lot is bigger than 88% of them (1.33 ac against a typical 0.25 ac) and it is newer than 88% of them (2000 against a typical 1983). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 42 Fourth St, Flagtown, NJ?

The 2025 property tax bill for 42 Fourth St, Flagtown, NJ was $14,025. The county assessed it at $651,100.

More homes on Fourth St

Closest homes

More homes in Flagtown 08821

Assigned schools

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