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Single Family ResidenceResidential
$306,221$382 / 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 Sep 24, 2026
Last sold for $250,000 on Jul 13, 2022

21 MOUNTAINSIDE DR

NEWTON, NJ 07860
0
Baths
802 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.
0.29 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$306K
$284K low$328K 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 · Jul 13, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,569 (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.$173,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$87,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$85,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$173,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$173,600

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.41
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.
57
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
30
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
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountySUSSEX
Lot (acres)The size of the land the home sits on, from county records.0.29
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(8)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Long Pond Elementary SchoolB+
Middle · Grades 5–8 · 0.4 mi
E
Florence M. Burd Elementary SchoolB+
Elementary · Grades PK–4 · 0.9 mi
H
Newton High SchoolC-
High · Grades 9–12 · 3.1 mi

District: Newton Town School District

Neighborhood · ZIP 07860These 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.98
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
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.26,386
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.250 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,501
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,329
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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 Mountainside 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 less than 87% of homes in Newton 07860
  • Costs more per square foot than 92% of homes in Newton 07860
  • Smaller than 95% of homes in Newton 07860
  • Has a smaller lot than 73% of homes in Newton 07860

What homes are worth in Newton 07860

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

This home
$194K$795K

This home is worth more than 13% of homes in Newton 07860.

How it measures up in Newton 07860

The dot is this home. The mark in the middle is the typical home in Newton 07860.

Estimated value$306,221
CheaperTypical $422,644Pricier

Pricier than 13% of homes nearby

Price per ft²$382
CheaperTypical $258Pricier

Pricier than 92% of homes nearby

Living area802 ft²
SmallerTypical 1,680 ft²Bigger

Bigger than 5% of homes nearby

Lot size0.29 ac
SmallerTypical 0.6 acBigger

Bigger than 27% of homes nearby

Year built1963
OlderTypical 1965Newer

Newer than 48% of homes nearby

How 21 Mountainside Dr ranks against every home in each area.
MeasureThis homeNewton 07860Sussex County
Estimated valuepricier than$306,22113% of homes18% of homes
Price per ft²pricier than$38292% of homes85% of homes
Living areabigger than802 ft²5% of homes8% of homes
Lot sizebigger than0.29 ac27% of homes40% of homes
Year builtnewer than196348% of homes37% of homes

About 21 Mountainside Dr

How much is 21 Mountainside Dr, Newton, NJ worth?

The TopHap Estimate for 21 Mountainside Dr, Newton, NJ is $306,221 as of Sep 24, 2026. The likely range is $284,087 to $328,355. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Mountainside Dr, Newton, NJ last sell?

21 Mountainside Dr, Newton, NJ last sold on Jul 13, 2022 for $250,000, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 21 Mountainside Dr, Newton, NJ?

21 Mountainside Dr, Newton, NJ has 802 square feet of living space and a 0.29-acre lot.

When was 21 Mountainside Dr, Newton, NJ built?

21 Mountainside Dr, Newton, NJ was built in 1963, making it 63 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Mountainside Dr, Newton, NJ?

21 Mountainside Dr, Newton, NJ is assigned to Long Pond Elementary School (middle), rated B+; Florence M. Burd Elementary School (elementary), rated B+; Newton High School (high), rated C-. All sit in Newton Town School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Mountainside Dr, Newton, NJ compare to other homes in Newton 07860?

Among the 9,173 homes in Newton 07860, it is worth more than 13% of them ($306,221 against a typical $422,644), its price per square foot is higher than 92% of them ($382 against a typical $258), it is bigger than 5% of them (802 ft² against a typical 1,680 ft²), its lot is bigger than 27% of them (0.29 ac against a typical 0.6 ac) and it is newer than 48% of them (1963 against a typical 1965). Measured against all of Sussex County, it is worth more than 18% 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 Mountainside Dr, Newton, NJ?

The 2025 property tax bill for 21 Mountainside Dr, Newton, NJ was $7,569. The county assessed it at $173,600.

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Assigned schools

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