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Single Family ResidenceResidential
$1,187,569$341 / 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 94How 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
Last sold for $952,500 on Sep 26, 2022

21 ROCKY HILL RD

PRINCETON, NJ 08540
0
Baths
3,483 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
2001
Year BuiltThe year the home was originally built, according to county records.

Valuation

$1.2M
$1.1M 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.$952,500 · Sep 26, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,038 (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.$298,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$90,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$208,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$298,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$298,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.19
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.

H
South Brunswick High SchoolB+
High · Grades 9–12 · 1.4 mi
E
Cambridge Elementary SchoolA-
Elementary · Grades PK–5 · 2.1 mi
M
Crossroads South Middle SchoolA
Middle · Grades 6–8 · 2.9 mi

District: South Brunswick Township School District

Neighborhood · ZIP 08540These 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.65
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.92

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.94%
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.5.5%
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.53,074
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,031 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$158,898
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$213,931
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%

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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

21 Rocky Hill Rd 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 97% of homes in Middlesex County
  • Costs less per square foot than 86% of homes in Princeton Walk
  • Bigger than 97% of homes in Princeton Walk
  • Has a bigger lot than 75% of homes in Princeton Walk
  • Among the newest homes in Princeton Walk

What homes are worth in Princeton 08540

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

This home
$284K$3.1M

This home is worth more than 63% of homes in Princeton 08540.

How it measures up in Princeton 08540

The dot is this home. The mark in the middle is the typical home in Princeton 08540.

Estimated value$1,187,569
CheaperTypical $1,002,641Pricier

Pricier than 63% of homes nearby

Price per ft²$341
CheaperTypical $427Pricier

Pricier than 16% of homes nearby

Living area3,483 ft²
SmallerTypical 2,238 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.19 ac
SmallerTypical 0.28 acBigger

Bigger than 40% of homes nearby

Year built2001
OlderTypical 1986Newer

Newer than 85% of homes nearby

How 21 Rocky Hill Rd ranks against every home in each area.
MeasureThis homePrinceton WalkPrinceton 08540Middlesex County
Estimated valuepricier than$1,187,56996% of homes63% of homes97% of homes
Price per ft²pricier than$34114% of homes16% of homes39% of homes
Living areabigger than3,483 ft²97% of homes83% of homes97% of homes
Lot sizebigger than0.19 ac75% of homes40% of homes64% of homes
Year builtnewer than2001almost all homes85% of homes88% of homes

About 21 Rocky Hill Rd

How much is 21 Rocky Hill Rd, Princeton, NJ worth?

The TopHap Estimate for 21 Rocky Hill Rd, Princeton, NJ is $1,187,569 as of Aug 30, 2026. The likely range is $1,120,899 to $1,254,239. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Rocky Hill Rd, Princeton, NJ last sell?

21 Rocky Hill Rd, Princeton, NJ last sold on Sep 26, 2022 for $952,500, according to the county's recorded deed.

How big is 21 Rocky Hill Rd, Princeton, NJ?

21 Rocky Hill Rd, Princeton, NJ has 3,483 square feet of living space and a 0.19-acre lot.

When was 21 Rocky Hill Rd, Princeton, NJ built?

21 Rocky Hill Rd, Princeton, NJ was built in 2001, making it 25 years old.

What schools serve 21 Rocky Hill Rd, Princeton, NJ?

21 Rocky Hill Rd, Princeton, NJ is assigned to South Brunswick High School (high), rated B+; Cambridge Elementary School (elementary), rated A-; Crossroads South Middle School (middle), rated A. All sit in South Brunswick Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rocky Hill Rd, Princeton, NJ compare to other homes in Princeton 08540?

Among the 13,780 homes in Princeton 08540, it is worth more than 63% of them ($1,187,569 against a typical $1,002,641), its price per square foot is higher than 16% of them ($341 against a typical $427), it is bigger than 83% of them (3,483 ft² against a typical 2,238 ft²), its lot is bigger than 40% of them (0.19 ac against a typical 0.28 ac) and it is newer than 85% of them (2001 against a typical 1986). Measured against all of Middlesex County, it is worth more than 97% 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 21 Rocky Hill Rd, Princeton, NJ?

The 2025 property tax bill for 21 Rocky Hill Rd, Princeton, NJ was $17,038. The county assessed it at $298,500.

More homes on Rocky Hill Rd

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