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Single Family ResidenceResidential
$1,336,207$442 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $810,000 on Jun 30, 2017

4 DIAMOND CT

PRINCETON JUNCTION, NJ 08550
0
Baths
3,020 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.
0.8 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.3M
$1.3M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$810,000 · Jun 30, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$22,728 (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.$718,800 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$249,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$509,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$718,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$718,800

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMERCER
Lot (acres)The size of the land the home sits on, from county records.0.80
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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
Thomas R. Grover Middle SchoolA
Middle · Grades 6–8 · 1.4 mi
H
West Windsor-Plainsboro High School SouthA-
High · Grades 9–12 · 1.9 mi
E
Maurice Hawk Elementary SchoolA
Elementary · Grades KG–3 · 2.2 mi

District: West Windsor-Plainsboro Regional School District

Neighborhood · ZIP 08550These 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.19
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 100.84

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.20,522
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,038 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$195,394
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$236,863
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

4 Diamond Ct 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 95% of homes in Mercer County
  • Costs more per square foot than 93% of homes in Mercer County
  • Bigger than 92% of homes in Mercer County
  • Has a bigger lot than 91% of homes in Mercer County
  • Newer than 80% of homes in Mercer County

What homes are worth in Princeton Junction 08550

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

This home
$444K$1.7M

This home is worth more than 83% of homes in Princeton Junction 08550.

How it measures up in Princeton Junction 08550

The dot is this home. The mark in the middle is the typical home in Princeton Junction 08550.

Estimated value$1,336,207
CheaperTypical $1,007,946Pricier

Pricier than 83% of homes nearby

Price per ft²$442
CheaperTypical $390Pricier

Pricier than 90% of homes nearby

Living area3,020 ft²
SmallerTypical 2,625 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.8 ac
SmallerTypical 0.69 acBigger

Bigger than 73% of homes nearby

Year built1990
OlderTypical 1989Newer

Newer than 60% of homes nearby

How 4 Diamond Ct ranks against every home in each area.
MeasureThis homePrinceton Junction 08550Mercer County
Estimated valuepricier than$1,336,20783% of homes95% of homes
Price per ft²pricier than$44290% of homes93% of homes
Living areabigger than3,020 ft²69% of homes92% of homes
Lot sizebigger than0.8 ac73% of homes91% of homes
Year builtnewer than199060% of homes80% of homes

About 4 Diamond Ct

How much is 4 Diamond Ct, Princeton Junction, NJ worth?

The TopHap Estimate for 4 Diamond Ct, Princeton Junction, NJ is $1,336,207 as of Oct 21, 2026. The likely range is $1,269,421 to $1,402,993. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4 Diamond Ct, Princeton Junction, NJ last sell?

4 Diamond Ct, Princeton Junction, NJ last sold on Jun 30, 2017 for $810,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 4 Diamond Ct, Princeton Junction, NJ?

4 Diamond Ct, Princeton Junction, NJ has 3,020 square feet of living space and a 0.80-acre lot.

When was 4 Diamond Ct, Princeton Junction, NJ built?

4 Diamond Ct, Princeton Junction, NJ was built in 1990, making it 36 years old. The building has 2 stories.

What schools serve 4 Diamond Ct, Princeton Junction, NJ?

4 Diamond Ct, Princeton Junction, NJ is assigned to Thomas R. Grover Middle School (middle), rated A; West Windsor-Plainsboro High School South (high), rated A-; Maurice Hawk Elementary School (elementary), rated A. All sit in West Windsor-Plainsboro Regional School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4 Diamond Ct, Princeton Junction, NJ compare to other homes in Princeton Junction 08550?

Among the 6,158 homes in Princeton Junction 08550, it is worth more than 83% of them ($1,336,207 against a typical $1,007,946), its price per square foot is higher than 90% of them ($442 against a typical $390), it is bigger than 69% of them (3,020 ft² against a typical 2,625 ft²), its lot is bigger than 73% of them (0.8 ac against a typical 0.69 ac) and it is newer than 60% of them (1990 against a typical 1989). Measured against all of Mercer County, it is worth more than 95% 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 4 Diamond Ct, Princeton Junction, NJ?

The 2025 property tax bill for 4 Diamond Ct, Princeton Junction, NJ was $22,728. The county assessed it at $718,800.

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