Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,580,024$421 / 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 89How 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

23 KEEP ST

MADISON, NJ 07940
0
Baths
3,756 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$1.6M
$1.4M low$1.8M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,506 (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.$728,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$258,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$469,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$728,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$728,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMORRIS
Lot (acres)The size of the land the home sits on, from county records.0.28
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

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

M
Madison Junior SchoolB
Middle · Grades 6–8 · 0.3 mi
E
Kings Road Elementary SchoolA
Elementary · Grades KG–5 · 0.6 mi
H
Madison High SchoolA-
High · Grades 9–12 · 1.2 mi

District: Madison Borough School District

Neighborhood · ZIP 07940These 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.54
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.104

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.42%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
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.17,707
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,782 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$157,455
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$211,017
Average tempThe average temperature here across a full year.51°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

23 Keep 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 95% of homes in Morris County
  • Costs less per square foot than 88% of homes in Madison 07940
  • Bigger than 93% of homes in Morris County
  • Newer than 74% of homes in Madison 07940

What homes are worth in Madison 07940

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

This home
$598K$3.1M

This home is worth more than 74% of homes in Madison 07940.

How it measures up in Madison 07940

The dot is this home. The mark in the middle is the typical home in Madison 07940.

Estimated value$1,580,024
CheaperTypical $1,124,012Pricier

Pricier than 74% of homes nearby

Price per ft²$421
CheaperTypical $550Pricier

Pricier than 12% of homes nearby

Living area3,756 ft²
SmallerTypical 2,184 ft²Bigger

Bigger than 88% of homes nearby

Lot size0.28 ac
SmallerTypical 0.24 acBigger

Bigger than 59% of homes nearby

Year built1978
OlderTypical 1953Newer

Newer than 74% of homes nearby

How 23 Keep St ranks against every home in each area.
MeasureThis homeMadison 07940Morris County
Estimated valuepricier than$1,580,02474% of homes95% of homes
Price per ft²pricier than$42112% of homes72% of homes
Living areabigger than3,756 ft²88% of homes93% of homes
Lot sizebigger than0.28 ac59% of homes42% of homes
Year builtnewer than197874% of homes63% of homes

About 23 Keep St

How much is 23 Keep St, Madison, NJ worth?

The TopHap Estimate for 23 Keep St, Madison, NJ is $1,580,024 as of Sep 24, 2026. The likely range is $1,398,894 to $1,761,154. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23 Keep St, Madison, NJ last sell?

23 Keep St, Madison, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 23 Keep St, Madison, NJ?

23 Keep St, Madison, NJ has 3,756 square feet of living space and a 0.28-acre lot.

When was 23 Keep St, Madison, NJ built?

23 Keep St, Madison, NJ was built in 1978, making it 48 years old. The building has 2 stories.

What schools serve 23 Keep St, Madison, NJ?

23 Keep St, Madison, NJ is assigned to Madison Junior School (middle), rated B; Kings Road Elementary School (elementary), rated A; Madison High School (high), rated A-. All sit in Madison Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23 Keep St, Madison, NJ compare to other homes in Madison 07940?

Among the 4,474 homes in Madison 07940, it is worth more than 74% of them ($1,580,024 against a typical $1,124,012), its price per square foot is higher than 12% of them ($421 against a typical $550), it is bigger than 88% of them (3,756 ft² against a typical 2,184 ft²), its lot is bigger than 59% of them (0.28 ac against a typical 0.24 ac) and it is newer than 74% of them (1978 against a typical 1953). Measured against all of Morris County, it is worth more than 95% 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 23 Keep St, Madison, NJ?

The 2024 property tax bill for 23 Keep St, Madison, NJ was $15,506. The county assessed it at $728,000.

More homes on Keep St

Closest homes

More homes in Madison 07940

Assigned schools

Explore the area

See this home in context

Open 23 Keep 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