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Single Family ResidenceResidential
$872,996$437 / 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 Sep 24, 2026

139 KNOLLWOOD DR

WATCHUNG, NJ 07069
0
Baths
1,998 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.
2.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$873K
$810K low$936K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,882 (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.$811,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$534,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$277,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$762,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$811,400

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.45
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
20
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
68
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
93
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
CountySOMERSET
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

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

M
Valley View SchoolA
Middle · Grades 5–8 · 0.7 mi
H
Watchung Hills Regional High SchoolB
High · Grades 9–12 · 2.0 mi
E
Bayberry SchoolB+
Elementary · Grades PK–4 · 2.3 mi

District: Watchung Borough School District

Neighborhood · ZIP 07069These 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.146
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.106

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.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
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.7,301
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,171 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$149,740
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$202,595
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.50 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

139 Knollwood Dr 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 71% of homes in Somerset County
  • Costs more per square foot than 86% of homes in Somerset County
  • Smaller than 78% of homes in Watchung 07069
  • Has a bigger lot than 95% of homes in Somerset County

What homes are worth in Watchung 07069

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

This home
$544K$2.3M

This home is worth more than 37% of homes in Watchung 07069.

How it measures up in Watchung 07069

The dot is this home. The mark in the middle is the typical home in Watchung 07069.

Estimated value$872,996
CheaperTypical $965,103Pricier

Pricier than 37% of homes nearby

Price per ft²$437
CheaperTypical $349Pricier

Pricier than 84% of homes nearby

Living area1,998 ft²
SmallerTypical 2,868 ft²Bigger

Bigger than 22% of homes nearby

Lot size2.1 ac
SmallerTypical 1.47 acBigger

Bigger than 94% of homes nearby

Year built1970
OlderTypical 1968Newer

Newer than 55% of homes nearby

How 139 Knollwood Dr ranks against every home in each area.
MeasureThis homeWatchung 07069Somerset County
Estimated valuepricier than$872,99637% of homes71% of homes
Price per ft²pricier than$43784% of homes86% of homes
Living areabigger than1,998 ft²22% of homes53% of homes
Lot sizebigger than2.1 ac94% of homes95% of homes
Year builtnewer than197055% of homes40% of homes

About 139 Knollwood Dr

How much is 139 Knollwood Dr, Watchung, NJ worth?

The TopHap Estimate for 139 Knollwood Dr, Watchung, NJ is $872,996 as of Sep 24, 2026. The likely range is $809,996 to $935,996. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 139 Knollwood Dr, Watchung, NJ last sell?

139 Knollwood Dr, Watchung, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

When was 139 Knollwood Dr, Watchung, NJ built?

139 Knollwood Dr, Watchung, NJ was built in 1970, making it 56 years old. The building has 1 story.

What schools serve 139 Knollwood Dr, Watchung, NJ?

139 Knollwood Dr, Watchung, NJ is assigned to Valley View School (middle), rated A; Watchung Hills Regional High School (high), rated B; Bayberry School (elementary), rated B+. All sit in Watchung Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 139 Knollwood Dr, Watchung, NJ compare to other homes in Watchung 07069?

Among the 2,038 homes in Watchung 07069, it is worth more than 37% of them ($872,996 against a typical $965,103), its price per square foot is higher than 84% of them ($437 against a typical $349), it is bigger than 22% of them (1,998 ft² against a typical 2,868 ft²), its lot is bigger than 94% of them (2.1 ac against a typical 1.47 ac) and it is newer than 55% of them (1970 against a typical 1968). Measured against all of Somerset County, it is worth more than 71% 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 139 Knollwood Dr, Watchung, NJ?

The 2025 property tax bill for 139 Knollwood Dr, Watchung, NJ was $14,882. The county assessed it at $811,400.

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