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Single Family ResidenceResidential
$505,561$359 / 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 91How 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 $180,000 on Mar 22, 1989

21 DOUGLAS ST

LAMBERTVILLE, NJ 08530
0
Baths
1,408 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$506K
$460K low$551K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$180,000 · Mar 22, 1989

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,041 (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.$430,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$294,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$136,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$399,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$430,700

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHUNTERDON
Lot (acres)The size of the land the home sits on, from county records.0.18
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

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
South Hunterdon Regional Elementary SchoolB-
Elementary · Grades PK–4 · 0.9 mi
M
South Hunterdon Regional Middle School
Middle · Grades 5–8 · 2.9 mi
H
South Hunterdon Regional High SchoolB
High · Grades 9–12 · 3.0 mi

District: South Hunterdon Regional School District

Neighborhood · ZIP 08530These 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.130
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.82

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.7,509
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.296 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,489
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$174,197
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 Douglas 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 less than 70% of homes in Lambertville 08530
  • Costs more per square foot than 86% of homes in Hunterdon County
  • Smaller than 79% of homes in Hunterdon County
  • Has a smaller lot than 79% of homes in Hunterdon County
  • Newer than 69% of homes in Lambertville 08530

What homes are worth in Lambertville 08530

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

This home
$317K$1.2M

This home is worth more than 30% of homes in Lambertville 08530.

How it measures up in Lambertville 08530

The dot is this home. The mark in the middle is the typical home in Lambertville 08530.

Estimated value$505,561
CheaperTypical $598,957Pricier

Pricier than 30% of homes nearby

Price per ft²$359
CheaperTypical $326Pricier

Pricier than 68% of homes nearby

Living area1,408 ft²
SmallerTypical 1,834 ft²Bigger

Bigger than 28% of homes nearby

Lot size0.18 ac
SmallerTypical 0.17 acBigger

Bigger than 51% of homes nearby

Year built1985
OlderTypical 1957Newer

Newer than 69% of homes nearby

How 21 Douglas St ranks against every home in each area.
MeasureThis homeLambertville 08530Hunterdon County
Estimated valuepricier than$505,56130% of homes33% of homes
Price per ft²pricier than$35968% of homes86% of homes
Living areabigger than1,408 ft²28% of homes21% of homes
Lot sizebigger than0.18 ac51% of homes21% of homes
Year builtnewer than198569% of homes59% of homes

About 21 Douglas St

How much is 21 Douglas St, Lambertville, NJ worth?

The TopHap Estimate for 21 Douglas St, Lambertville, NJ is $505,561 as of Aug 30, 2026. The likely range is $460,000 to $551,122. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Douglas St, Lambertville, NJ last sell?

21 Douglas St, Lambertville, NJ last sold on Mar 22, 1989 for $180,000, according to the county's recorded deed.

How big is 21 Douglas St, Lambertville, NJ?

21 Douglas St, Lambertville, NJ has 1,408 square feet of living space and a 0.18-acre lot.

When was 21 Douglas St, Lambertville, NJ built?

21 Douglas St, Lambertville, NJ was built in 1985, making it 41 years old. The building has 2 stories.

What schools serve 21 Douglas St, Lambertville, NJ?

21 Douglas St, Lambertville, NJ is assigned to South Hunterdon Regional Elementary School (elementary), rated B-; South Hunterdon Regional Middle School (middle); South Hunterdon Regional High School (high), rated B. All sit in South Hunterdon Regional School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Douglas St, Lambertville, NJ compare to other homes in Lambertville 08530?

Among the 2,767 homes in Lambertville 08530, it is worth more than 30% of them ($505,561 against a typical $598,957), its price per square foot is higher than 68% of them ($359 against a typical $326), it is bigger than 28% of them (1,408 ft² against a typical 1,834 ft²), its lot is bigger than 51% of them (0.18 ac against a typical 0.17 ac) and it is newer than 69% of them (1985 against a typical 1957). Measured against all of Hunterdon County, it is worth more than 33% 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 Douglas St, Lambertville, NJ?

The 2025 property tax bill for 21 Douglas St, Lambertville, NJ was $9,041. The county assessed it at $430,700.

More homes on Douglas St

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Assigned schools

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