Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$281,567$335 / 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 Sep 24, 2026
Last sold for $284,000 on Oct 7, 2026

3 PROSPECT ST

MOUNT ARLINGTON, NJ 07856
Building report
0
Baths
840 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.
784 ft²
Lot SizeThe size of the land the home sits on, from county records.
1988
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$282K
$256K low$308K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$284,000 · Oct 7, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,426 (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.$155,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$90,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$65,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$155,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$155,500

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.Condo/Apartment
CountyMORRIS
Lot (acres)The size of the land the home sits on, from county records.0.02
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(4)

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
Edith M. Decker Elementary School
Elementary · Grades PK–2 · 0.4 mi
M
Mount Arlington Public SchoolB
Middle · Grades 3–8 · 0.9 mi
H
Roxbury High SchoolC
High · Grades 9–12 · 4.7 mi

District: Roxbury Township School District

Neighborhood · ZIP 07856These 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.138
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.5,616
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,321 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$95,556
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$105,359
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.52 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

Owner Tools

Do you own this home?
Claim this home

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

3 Prospect 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 98% of homes in Mount Arlington 07856
  • Costs less per square foot than 65% of homes in Morris County
  • Smaller than 97% of homes in Mount Arlington 07856
  • Has a smaller lot than 98% of homes in Morris County
  • Newer than 75% of homes in Morris County

What homes are worth in Mount Arlington 07856

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

This home
$292K$1.5M

This home is worth more than 2% of homes in Mount Arlington 07856.

How it measures up in Mount Arlington 07856

The dot is this home. The mark in the middle is the typical home in Mount Arlington 07856.

Estimated value$281,567
CheaperTypical $497,452Pricier

Pricier than 2% of homes nearby

Price per ft²$335
CheaperTypical $318Pricier

Pricier than 61% of homes nearby

Living area840 ft²
SmallerTypical 1,612 ft²Bigger

Bigger than 3% of homes nearby

Lot size784 ft²
SmallerTypical 2,309 ft²Bigger

Bigger than 16% of homes nearby

Year built1988
OlderTypical 1994Newer

Newer than 38% of homes nearby

How 3 Prospect St ranks against every home in each area.
MeasureThis homeMount Arlington 07856Morris County
Estimated valuepricier than$281,5672% of homes2% of homes
Price per ft²pricier than$33561% of homes35% of homes
Living areabigger than840 ft²3% of homes3% of homes
Lot sizebigger than784 ft²16% of homes2% of homes
Year builtnewer than198838% of homes75% of homes

About 3 Prospect St

How much is 3 Prospect St, Mount Arlington, NJ worth?

The TopHap Estimate for 3 Prospect St, Mount Arlington, NJ is $281,567 as of Sep 24, 2026. The likely range is $255,612 to $307,522. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3 Prospect St, Mount Arlington, NJ last sell?

3 Prospect St, Mount Arlington, NJ last sold on Oct 7, 2026 for $284,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 3 Prospect St, Mount Arlington, NJ?

3 Prospect St, Mount Arlington, NJ has 840 square feet of living space and a 0.02-acre lot.

When was 3 Prospect St, Mount Arlington, NJ built?

3 Prospect St, Mount Arlington, NJ was built in 1988, making it 38 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 3 Prospect St, Mount Arlington, NJ?

3 Prospect St, Mount Arlington, NJ is assigned to Edith M. Decker Elementary School (elementary); Mount Arlington Public School (middle), rated B; Roxbury High School (high), rated C. All sit in Roxbury Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3 Prospect St, Mount Arlington, NJ compare to other homes in Mount Arlington 07856?

Among the 1,846 homes in Mount Arlington 07856, it is worth more than 2% of them ($281,567 against a typical $497,452), its price per square foot is higher than 61% of them ($335 against a typical $318), it is bigger than 3% of them (840 ft² against a typical 1,612 ft²), its lot is bigger than 16% of them (784 ft² against a typical 2,309 ft²) and it is newer than 38% of them (1988 against a typical 1994). Measured against all of Morris County, it is worth more than 2% 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 3 Prospect St, Mount Arlington, NJ?

The 2025 property tax bill for 3 Prospect St, Mount Arlington, NJ was $3,426. The county assessed it at $155,500.

More homes on Prospect St

Closest homes

More homes in Mount Arlington 07856

Assigned schools

Explore the area

See this home in context

Open 3 Prospect St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map