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Single Family ResidenceResidential
$976,968$255 / 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 92How 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

321 RIVA AVE

MILLTOWN, NJ 08850
0
Baths
3,825 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.
2.67 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$977K
$897K low$1.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$22,245 (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.$176,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$26,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$149,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$176,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$176,100

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.48 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Colonial
CountyMIDDLESEX
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.

E
Warnsdorfer Elementary SchoolA+
Elementary · Grades KG–4 · 1.8 mi
H
East Brunswick High SchoolA
High · Grades 10–12 · 3.0 mi
M
Hammarskjold Upper Elementary SchoolA
Middle · Grades 5–6 · 3.4 mi

District: East Brunswick Township 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

321 Riva 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.

  • Worth more than 97% of homes in Milltown 08850
  • Among the lowest price per square foot in Milltown 08850
  • Bigger than 98% of homes in Milltown 08850
  • Among the largest lots in Milltown 08850
  • Newer than 95% of homes in Milltown 08850

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 97% 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$976,968
CheaperTypical $639,900Pricier

Pricier than 97% of homes nearby

Price per ft²$255
CheaperTypical $396Pricier

Cheaper than almost all homes nearby

Living area3,825 ft²
SmallerTypical 1,640 ft²Bigger

Bigger than 98% of homes nearby

Lot size2.67 ac
SmallerTypical 0.2 acBigger

Bigger than almost all homes nearby

Year built1991
OlderTypical 1955Newer

Newer than 95% of homes nearby

How 321 Riva Ave ranks against every home in each area.
MeasureThis homeFarrington Lake HeightsMilltown 08850Middlesex County
Estimated valuepricier than$976,96886% of homes97% of homes92% of homes
Price per ft²pricier than$2555% of homesalmost no homes5% of homes
Living areabigger than3,825 ft²88% of homes98% of homes98% of homes
Lot sizebigger than2.67 acalmost all homesalmost all homesalmost all homes
Year builtnewer than199188% of homes95% of homes78% of homes

About 321 Riva Ave

How much is 321 Riva Ave, Milltown, NJ worth?

The TopHap Estimate for 321 Riva Ave, Milltown, NJ is $976,968 as of Jul 14, 2026. The likely range is $896,788 to $1,057,148. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 Riva Ave, Milltown, NJ last sell?

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

When was 321 Riva Ave, Milltown, NJ built?

321 Riva Ave, Milltown, NJ was built in 1991, making it 35 years old. It is a colonial home.

What schools serve 321 Riva Ave, Milltown, NJ?

321 Riva Ave, Milltown, NJ is assigned to Warnsdorfer Elementary School (elementary), rated A+; East Brunswick High School (high), rated A; Hammarskjold Upper Elementary School (middle), rated A. All sit in East Brunswick Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 Riva Ave, Milltown, NJ compare to other homes in Milltown 08850?

Among the 2,852 homes in Milltown 08850, it is worth more than 97% of them ($976,968 against a typical $639,900), its price per square foot is higher than almost none of them ($255 against a typical $396), it is bigger than 98% of them (3,825 ft² against a typical 1,640 ft²), its lot is bigger than almost all of them (2.67 ac against a typical 0.2 ac) and it is newer than 95% of them (1991 against a typical 1955). Measured against all of Middlesex County, it is worth more than 92% 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 321 Riva Ave, Milltown, NJ?

The 2025 property tax bill for 321 Riva Ave, Milltown, NJ was $22,245. The county assessed it at $176,100.

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