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Single Family ResidenceResidential
$498,320$137 / 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 93How 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 $255,000 on Aug 26, 2019

21 UNION ST

MOUNT HOLLY, NJ 08060
0
Baths
3,633 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1885
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.

Valuation

$498K
$463K low$534K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$255,000 · Aug 26, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,848 (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.$263,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$60,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$203,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$263,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$263,100

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.
26
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
73
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
88
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
33
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyBURLINGTON
Lot (acres)The size of the land the home sits on, from county records.0.23
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(3)

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
F. W. Holbein Middle SchoolC+
Middle · Grades 6–8 · 0.5 mi
H
Rancocas Valley Regional High SchoolC-
High · Grades 9–12 · 0.5 mi
E
John Brainerd Elementary School
Elementary · Grades PK–2 · 0.6 mi

District: Mount Holly Township School District

Neighborhood · ZIP 08060These 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.93
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 100.74

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.26,873
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,186 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$101,707
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$122,594
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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 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 78% of homes in Mount Holly 08060
  • Among the lowest price per square foot in Mount Holly 08060
  • Among the largest homes in Mount Holly 08060
  • Older than 98% of homes in Burlington County

What homes are worth in Mount Holly 08060

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

This home
$185K$700K

This home is worth more than 78% of homes in Mount Holly 08060.

How it measures up in Mount Holly 08060

The dot is this home. The mark in the middle is the typical home in Mount Holly 08060.

Estimated value$498,320
CheaperTypical $404,402Pricier

Pricier than 78% of homes nearby

Price per ft²$137
CheaperTypical $239Pricier

Cheaper than almost all homes nearby

Living area3,633 ft²
SmallerTypical 1,642 ft²Bigger

Bigger than almost all homes nearby

Lot size0.23 ac
SmallerTypical 0.2 acBigger

Bigger than 61% of homes nearby

Year built1885
OlderTypical 1978Newer

Newer than 7% of homes nearby

How 21 Union St ranks against every home in each area.
MeasureThis homeMount Holly 08060Burlington County
Estimated valuepricier than$498,32078% of homes66% of homes
Price per ft²pricier than$137almost no homesalmost no homes
Living areabigger than3,633 ft²almost all homes96% of homes
Lot sizebigger than0.23 ac61% of homes50% of homes
Year builtnewer than18857% of homes2% of homes

About 21 Union St

How much is 21 Union St, Mount Holly, NJ worth?

The TopHap Estimate for 21 Union St, Mount Holly, NJ is $498,320 as of Aug 30, 2026. The likely range is $462,802 to $533,838. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Union St, Mount Holly, NJ last sell?

21 Union St, Mount Holly, NJ last sold on Aug 26, 2019 for $255,000, according to the county's recorded deed.

How big is 21 Union St, Mount Holly, NJ?

21 Union St, Mount Holly, NJ has 3,633 square feet of living space and a 0.23-acre lot.

When was 21 Union St, Mount Holly, NJ built?

21 Union St, Mount Holly, NJ was built in 1885, making it 141 years old. It is a colonial home. The building has 3 stories.

What schools serve 21 Union St, Mount Holly, NJ?

21 Union St, Mount Holly, NJ is assigned to F. W. Holbein Middle School (middle), rated C+; Rancocas Valley Regional High School (high), rated C-; John Brainerd Elementary School (elementary). All sit in Mount Holly Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Union St, Mount Holly, NJ compare to other homes in Mount Holly 08060?

Among the 8,463 homes in Mount Holly 08060, it is worth more than 78% of them ($498,320 against a typical $404,402), its price per square foot is higher than almost none of them ($137 against a typical $239), it is bigger than almost all of them (3,633 ft² against a typical 1,642 ft²), its lot is bigger than 61% of them (0.23 ac against a typical 0.2 ac) and it is newer than 7% of them (1885 against a typical 1978). Measured against all of Burlington County, it is worth more than 66% 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 Union St, Mount Holly, NJ?

The 2025 property tax bill for 21 Union St, Mount Holly, NJ was $9,848. The county assessed it at $263,100.

More homes on Union St

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Assigned schools

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