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Single Family ResidenceResidential
$467,408$205 / 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 Aug 30, 2026
Last sold for $234,895 on Jul 1, 2010

21 S MARS DR

SEWELL, NJ 08080
0
Baths
2,276 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.
1983
Year BuiltThe year the home was originally built, according to county records.

Valuation

$467K
$448K low$487K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$234,895 · Jul 1, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,367 (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.$242,800 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$57,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$185,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$242,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$242,800

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.43
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
24
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
72
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
86
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
CountyGLOUCESTER
Lot (acres)The size of the land the home sits on, from county records.0.23
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
Orchard Valley Middle SchoolB
Middle · Grades 6–8 · 0.6 mi
E
Thomas Jefferson Elementary SchoolB+
Elementary · Grades KG–5 · 0.7 mi
H
Washington Township High SchoolC+
High · Grades 9–12 · 1.5 mi

District: Washington Township School District

Neighborhood · ZIP 08080These 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.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.9%
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.42,430
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,444 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$114,695
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,357
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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 S Mars Dr 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 72% of homes in Gloucester County
  • Costs less per square foot than 74% of homes in Sewell 08080
  • Bigger than 74% of homes in Gloucester County
  • Older than 68% of homes in Sewell 08080

What homes are worth in Sewell 08080

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

This home
$232K$809K

This home is worth more than 55% of homes in Sewell 08080.

How it measures up in Sewell 08080

The dot is this home. The mark in the middle is the typical home in Sewell 08080.

Estimated value$467,408
CheaperTypical $449,182Pricier

Pricier than 55% of homes nearby

Price per ft²$205
CheaperTypical $223Pricier

Pricier than 26% of homes nearby

Living area2,276 ft²
SmallerTypical 2,030 ft²Bigger

Bigger than 61% of homes nearby

Lot size0.23 ac
SmallerTypical 0.24 acBigger

Bigger than 45% of homes nearby

Year built1983
OlderTypical 1987Newer

Newer than 32% of homes nearby

How 21 S Mars Dr ranks against every home in each area.
MeasureThis homeSewell 08080Gloucester County
Estimated valuepricier than$467,40855% of homes72% of homes
Price per ft²pricier than$20526% of homes35% of homes
Living areabigger than2,276 ft²61% of homes74% of homes
Lot sizebigger than0.23 ac45% of homes42% of homes
Year builtnewer than198332% of homes54% of homes

About 21 S Mars Dr

How much is 21 S Mars Dr, Sewell, NJ worth?

The TopHap Estimate for 21 S Mars Dr, Sewell, NJ is $467,408 as of Aug 30, 2026. The likely range is $448,258 to $486,558. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 S Mars Dr, Sewell, NJ last sell?

21 S Mars Dr, Sewell, NJ last sold on Jul 1, 2010 for $234,895, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 S Mars Dr, Sewell, NJ?

21 S Mars Dr, Sewell, NJ has 2,276 square feet of living space and a 0.23-acre lot.

When was 21 S Mars Dr, Sewell, NJ built?

21 S Mars Dr, Sewell, NJ was built in 1983, making it 43 years old.

What schools serve 21 S Mars Dr, Sewell, NJ?

21 S Mars Dr, Sewell, NJ is assigned to Orchard Valley Middle School (middle), rated B; Thomas Jefferson Elementary School (elementary), rated B+; Washington Township High School (high), rated C+. All sit in Washington Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 S Mars Dr, Sewell, NJ compare to other homes in Sewell 08080?

Among the 13,178 homes in Sewell 08080, it is worth more than 55% of them ($467,408 against a typical $449,182), its price per square foot is higher than 26% of them ($205 against a typical $223), it is bigger than 61% of them (2,276 ft² against a typical 2,030 ft²), its lot is bigger than 45% of them (0.23 ac against a typical 0.24 ac) and it is newer than 32% of them (1983 against a typical 1987). Measured against all of Gloucester County, it is worth more than 72% 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 S Mars Dr, Sewell, NJ?

The 2025 property tax bill for 21 S Mars Dr, Sewell, NJ was $9,367. The county assessed it at $242,800.

More homes on S Mars Dr

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