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Single Family ResidenceResidential
$983,153$399 / 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 96How 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 $250,000 on Apr 1, 1991

38 UNION ST

PRINCETON, NJ 08540
0
Baths
2,465 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.
0.41 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.

Valuation

$983K
$943K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$250,000 · Apr 1, 1991

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,516 (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.$841,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$317,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$523,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$675,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$841,000

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.
22
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
67
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
CountySOMERSET
Lot (acres)The size of the land the home sits on, from county records.0.41
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.

E
Claremont Elementary SchoolC-
Elementary · Grades PK–5 · 5.5 mi
M
Franklin Middle School @ Sampson G. Smith CampusC-
Middle · Grades 6–8 · 9.5 mi
H
Franklin High SchoolD+
High · Grades 9–12 · 10.3 mi

District: Franklin 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

38 Union 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 79% of homes in Somerset County
  • Costs more per square foot than 75% of homes in Somerset County
  • Bigger than 69% of homes in Somerset County
  • Newer than 72% of homes in Somerset County

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
$305K$3.3M

This home is worth more than 48% 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$983,153
CheaperTypical $1,011,579Pricier

Pricier than 48% of homes nearby

Price per ft²$399
CheaperTypical $429Pricier

Pricier than 41% of homes nearby

Living area2,465 ft²
SmallerTypical 2,258 ft²Bigger

Bigger than 58% of homes nearby

Lot size0.41 ac
SmallerTypical 0.28 acBigger

Bigger than 56% of homes nearby

Year built1991
OlderTypical 1986Newer

Newer than 64% of homes nearby

How 38 Union St ranks against every home in each area.
MeasureThis homePrinceton 08540Somerset County
Estimated valuepricier than$983,15348% of homes79% of homes
Price per ft²pricier than$39941% of homes75% of homes
Living areabigger than2,465 ft²58% of homes69% of homes
Lot sizebigger than0.41 ac56% of homes59% of homes
Year builtnewer than199164% of homes72% of homes

About 38 Union St

How much is 38 Union St, Princeton, NJ worth?

The TopHap Estimate for 38 Union St, Princeton, NJ is $983,153 as of Sep 24, 2026. The likely range is $943,161 to $1,023,145. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 38 Union St, Princeton, NJ last sell?

38 Union St, Princeton, NJ last sold on Apr 1, 1991 for $250,000, according to the county's recorded deed.

How big is 38 Union St, Princeton, NJ?

38 Union St, Princeton, NJ has 2,465 square feet of living space and a 0.41-acre lot.

When was 38 Union St, Princeton, NJ built?

38 Union St, Princeton, NJ was built in 1991, making it 35 years old.

What schools serve 38 Union St, Princeton, NJ?

38 Union St, Princeton, NJ is assigned to Claremont Elementary School (elementary), rated C-; Franklin Middle School @ Sampson G. Smith Campus (middle), rated C-; Franklin High School (high), rated D+. All sit in Franklin Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 38 Union St, Princeton, NJ compare to other homes in Princeton 08540?

Among the 13,780 homes in Princeton 08540, it is worth more than 48% of them ($983,153 against a typical $1,011,579), its price per square foot is higher than 41% of them ($399 against a typical $429), it is bigger than 58% of them (2,465 ft² against a typical 2,258 ft²), its lot is bigger than 56% of them (0.41 ac against a typical 0.28 ac) and it is newer than 64% of them (1991 against a typical 1986). Measured against all of Somerset County, it is worth more than 79% 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 38 Union St, Princeton, NJ?

The 2025 property tax bill for 38 Union St, Princeton, NJ was $14,516. The county assessed it at $841,000.

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Assigned schools

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