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Single Family ResidenceResidential
$800,530$397 / 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 Oct 21, 2026
Last sold for $295,000 on Nov 10, 2011

121 MOUNTAINSIDE RD

MENDHAM, NJ 07945
0
Baths
2,018 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.
3.36 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$801K
$741K low$860K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$295,000 · Nov 10, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,289 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$734,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$379,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$354,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$684,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$734,200

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.
18
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
64
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
98
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
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
CountyMORRIS
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(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.

Foreclosure Filings(1)

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

H
West Morris Mendham High SchoolA-
High · Grades 9–12 · 1.1 mi
E
Mendham Township Elementary SchoolA+
Elementary · Grades PK–4 · 1.7 mi
M
Mendham Township Middle SchoolA+
Middle · Grades 5–8 · 2.8 mi

District: Mendham Township School District

Neighborhood · ZIP 07945These 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.88
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 100.101

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.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.1%
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.10,295
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.510 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$212,259
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$270,274
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.53 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

121 Mountainside Rd 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 83% of homes in Mendham 07945
  • Smaller than 79% of homes in Mendham 07945
  • Has a bigger lot than 96% of homes in Morris County
  • Older than 79% of homes in Mendham 07945

What homes are worth in Mendham 07945

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

This home
$510K$2.6M

This home is worth more than 17% of homes in Mendham 07945.

How it measures up in Mendham 07945

The dot is this home. The mark in the middle is the typical home in Mendham 07945.

Estimated value$800,530
CheaperTypical $1,108,125Pricier

Pricier than 17% of homes nearby

Price per ft²$397
CheaperTypical $396Pricier

Pricier than 51% of homes nearby

Living area2,018 ft²
SmallerTypical 2,808 ft²Bigger

Bigger than 21% of homes nearby

Lot size3.36 ac
SmallerTypical 1.03 acBigger

Bigger than 84% of homes nearby

Year built1957
OlderTypical 1973Newer

Newer than 21% of homes nearby

How 121 Mountainside Rd ranks against every home in each area.
MeasureThis homeMendham 07945Morris County
Estimated valuepricier than$800,53017% of homes60% of homes
Price per ft²pricier than$39751% of homes63% of homes
Living areabigger than2,018 ft²21% of homes51% of homes
Lot sizebigger than3.36 ac84% of homes96% of homes
Year builtnewer than195721% of homes35% of homes

About 121 Mountainside Rd

How much is 121 Mountainside Rd, Mendham, NJ worth?

The TopHap Estimate for 121 Mountainside Rd, Mendham, NJ is $800,530 as of Oct 21, 2026. The likely range is $741,089 to $859,971. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Mountainside Rd, Mendham, NJ last sell?

121 Mountainside Rd, Mendham, NJ last sold on Nov 10, 2011 for $295,000, according to the county's recorded deed.

When was 121 Mountainside Rd, Mendham, NJ built?

121 Mountainside Rd, Mendham, NJ was built in 1957, making it 69 years old. The building has 1 story.

What schools serve 121 Mountainside Rd, Mendham, NJ?

121 Mountainside Rd, Mendham, NJ is assigned to West Morris Mendham High School (high), rated A-; Mendham Township Elementary School (elementary), rated A+; Mendham Township Middle School (middle), rated A+. All sit in Mendham Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 Mountainside Rd, Mendham, NJ compare to other homes in Mendham 07945?

Among the 3,209 homes in Mendham 07945, it is worth more than 17% of them ($800,530 against a typical $1,108,125), its price per square foot is higher than 51% of them ($397 against a typical $396), it is bigger than 21% of them (2,018 ft² against a typical 2,808 ft²), its lot is bigger than 84% of them (3.36 ac against a typical 1.03 ac) and it is newer than 21% of them (1957 against a typical 1973). Measured against all of Morris County, it is worth more than 60% 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 121 Mountainside Rd, Mendham, NJ?

The 2024 property tax bill for 121 Mountainside Rd, Mendham, NJ was $12,289. The county assessed it at $734,200.

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