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Single Family ResidenceResidential
$613,003$409 / 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 Jul 14, 2026

21 RICHTER AVE

MILLTOWN, NJ 08850
0
Baths
1,500 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1906
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$613K
$591K low$635K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,780 (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.$140,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$59,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$80,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$140,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$140,700

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.15
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
Joyce Kilmer SchoolC+
Middle · Grades 5–8 · 0.2 mi
E
Parkview Elementary SchoolB+
Elementary · Grades PK–4 · 0.7 mi
H
Spotswood High SchoolC+
High · Grades 9–12 · 4.8 mi

District: Spotswood Borough School District

Neighborhood · ZIP 08850These 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.46
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.98

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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.2%
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.8,284
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,308 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$134,298
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,158
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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 Richter Ave 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.

  • Costs more per square foot than 74% of homes in Middlesex County
  • Has a smaller lot than 71% of homes in Milltown 08850
  • Older than 97% of homes in Middlesex County

What homes are worth in Milltown 08850

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

This home
$426K$1.1M

This home is worth more than 42% of homes in Milltown 08850.

How it measures up in Milltown 08850

The dot is this home. The mark in the middle is the typical home in Milltown 08850.

Estimated value$613,003
CheaperTypical $639,999Pricier

Pricier than 42% of homes nearby

Price per ft²$409
CheaperTypical $396Pricier

Pricier than 59% of homes nearby

Living area1,500 ft²
SmallerTypical 1,641 ft²Bigger

Bigger than 41% of homes nearby

Lot size0.15 ac
SmallerTypical 0.2 acBigger

Bigger than 29% of homes nearby

Year built1906
OlderTypical 1955Newer

Newer than 6% of homes nearby

How 21 Richter Ave ranks against every home in each area.
MeasureThis homeMilltown 08850Middlesex County
Estimated valuepricier than$613,00342% of homes56% of homes
Price per ft²pricier than$40959% of homes74% of homes
Living areabigger than1,500 ft²41% of homes41% of homes
Lot sizebigger than0.15 ac29% of homes51% of homes
Year builtnewer than19066% of homes3% of homes

About 21 Richter Ave

How much is 21 Richter Ave, Milltown, NJ worth?

The TopHap Estimate for 21 Richter Ave, Milltown, NJ is $613,003 as of Jul 14, 2026. The likely range is $590,941 to $635,065. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Richter Ave, Milltown, NJ last sell?

21 Richter Ave, Milltown, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Richter Ave, Milltown, NJ?

21 Richter Ave, Milltown, NJ has 1,500 square feet of living space and a 0.15-acre lot.

When was 21 Richter Ave, Milltown, NJ built?

21 Richter Ave, Milltown, NJ was built in 1906, making it 120 years old. The building has 2 stories.

What schools serve 21 Richter Ave, Milltown, NJ?

21 Richter Ave, Milltown, NJ is assigned to Joyce Kilmer School (middle), rated C+; Parkview Elementary School (elementary), rated B+; Spotswood High School (high), rated C+. All sit in Spotswood Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Richter Ave, Milltown, NJ compare to other homes in Milltown 08850?

Among the 2,852 homes in Milltown 08850, it is worth more than 42% of them ($613,003 against a typical $639,999), its price per square foot is higher than 59% of them ($409 against a typical $396), it is bigger than 41% of them (1,500 ft² against a typical 1,641 ft²), its lot is bigger than 29% of them (0.15 ac against a typical 0.2 ac) and it is newer than 6% of them (1906 against a typical 1955). Measured against all of Middlesex County, it is worth more than 56% 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 Richter Ave, Milltown, NJ?

The 2025 property tax bill for 21 Richter Ave, Milltown, NJ was $9,780. The county assessed it at $140,700.

More homes on Richter Ave

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Assigned schools

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