Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$943,174$520 / 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 63How 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 $260,000 on May 10, 1999

100 ROCK RD E

GREEN BROOK, NJ 08812
0
Baths
1,813 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.
0.65 ac
Lot SizeThe size of the land the home sits on, from county records.
1967
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$943K
$593K low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$260,000 · May 10, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,223 (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.$615,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$329,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$286,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$575,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$615,900

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.
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.
91
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
Lot (acres)The size of the land the home sits on, from county records.0.65
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
Green Brook Middle SchoolB
Middle · Grades 5–8 · 1.1 mi
E
Irene E. Feldkirchner Elementary SchoolB
Elementary · Grades PK–4 · 1.4 mi
H
Watchung Hills Regional High SchoolA
High · Grades 9–12 · 2.3 mi

District: Green Brook Township School District

Neighborhood · ZIP 08812These 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.121
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.15,513
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,931 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$123,698
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,053
Average tempThe average temperature here across a full year.52°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%

Owner Tools

Do you own this home?
Claim this home

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

100 Rock Rd E 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 Dunellen 08812
  • Among the highest price per square foot in Dunellen 08812
  • Has a bigger lot than 87% of homes in Dunellen 08812

What homes are worth in Dunellen 08812

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

This home
$356K$1.4M

This home is worth more than 88% of homes in Dunellen 08812.

How it measures up in Dunellen 08812

The dot is this home. The mark in the middle is the typical home in Dunellen 08812.

Estimated value$943,174
CheaperTypical $567,986Pricier

Pricier than 88% of homes nearby

Price per ft²$520
CheaperTypical $338Pricier

Pricier than almost all homes nearby

Living area1,813 ft²
SmallerTypical 1,736 ft²Bigger

Bigger than 55% of homes nearby

Lot size0.65 ac
SmallerTypical 0.24 acBigger

Bigger than 87% of homes nearby

Year built1967
OlderTypical 1956Newer

Newer than 63% of homes nearby

How 100 Rock Rd E ranks against every home in each area.
MeasureThis homeDunellen 08812Somerset County
Estimated valuepricier than$943,17488% of homes77% of homes
Price per ft²pricier than$520almost all homes97% of homes
Living areabigger than1,813 ft²55% of homes46% of homes
Lot sizebigger than0.65 ac87% of homes70% of homes
Year builtnewer than196763% of homes38% of homes

About 100 Rock Rd E

How much is 100 Rock Rd E, Green Brook, NJ worth?

The TopHap Estimate for 100 Rock Rd E, Green Brook, NJ is $943,174 as of Sep 24, 2026. The likely range is $593,238 to $1,293,110. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Rock Rd E, Green Brook, NJ last sell?

100 Rock Rd E, Green Brook, NJ last sold on May 10, 1999 for $260,000, according to the county's recorded deed.

How big is 100 Rock Rd E, Green Brook, NJ?

100 Rock Rd E, Green Brook, NJ has 1,813 square feet of living space and a 0.65-acre lot.

When was 100 Rock Rd E, Green Brook, NJ built?

100 Rock Rd E, Green Brook, NJ was built in 1967, making it 59 years old. The building has 1 story.

What schools serve 100 Rock Rd E, Green Brook, NJ?

100 Rock Rd E, Green Brook, NJ is assigned to Green Brook Middle School (middle), rated B; Irene E. Feldkirchner Elementary School (elementary), rated B; Watchung Hills Regional High School (high), rated A. All sit in Green Brook Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 Rock Rd E, Green Brook, NJ compare to other homes in Dunellen 08812?

Among the 4,191 homes in Dunellen 08812, it is worth more than 88% of them ($943,174 against a typical $567,986), its price per square foot is higher than almost all of them ($520 against a typical $338), it is bigger than 55% of them (1,813 ft² against a typical 1,736 ft²), its lot is bigger than 87% of them (0.65 ac against a typical 0.24 ac) and it is newer than 63% of them (1967 against a typical 1956). Measured against all of Somerset County, it is worth more than 77% 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 100 Rock Rd E, Green Brook, NJ?

The 2025 property tax bill for 100 Rock Rd E, Green Brook, NJ was $12,223. The county assessed it at $615,900.

More homes on Rock Rd E

Closest homes

More homes in Green Brook 08812

Assigned schools

Explore the area

See this home in context

Open 100 Rock Rd E on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map