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Single Family ResidenceResidential
$526,786$278 / 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 88How 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

138 RIVA AVE

MILLTOWN, NJ 08850
0
Baths
1,896 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.
3,280 ft²
Lot SizeThe size of the land the home sits on, from county records.
1918
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$527K
$466K low$588K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,023 (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.$144,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$46,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$98,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$144,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$144,200

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.0.07
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 · 0.3 mi
E
Parkview Elementary SchoolB+
Elementary · Grades PK–4 · 0.8 mi
H
Spotswood High SchoolC+
High · Grades 9–12 · 4.7 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

138 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 less than 84% of homes in Milltown 08850
  • Costs less per square foot than 97% of homes in Milltown 08850
  • Bigger than 65% of homes in Milltown 08850
  • Has a smaller lot than 96% of homes in Milltown 08850
  • Older than 94% 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 16% 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$526,786
CheaperTypical $639,900Pricier

Pricier than 16% of homes nearby

Price per ft²$278
CheaperTypical $396Pricier

Pricier than 3% of homes nearby

Living area1,896 ft²
SmallerTypical 1,640 ft²Bigger

Bigger than 65% of homes nearby

Lot size3,280 ft²
SmallerTypical 0.2 acBigger

Bigger than 4% of homes nearby

Year built1918
OlderTypical 1955Newer

Newer than 19% of homes nearby

How 138 Riva Ave ranks against every home in each area.
MeasureThis homeMilltown 08850Middlesex County
Estimated valuepricier than$526,78616% of homes36% of homes
Price per ft²pricier than$2783% of homes10% of homes
Living areabigger than1,896 ft²65% of homes65% of homes
Lot sizebigger than3,280 ft²4% of homes26% of homes
Year builtnewer than191819% of homes6% of homes

About 138 Riva Ave

How much is 138 Riva Ave, Milltown, NJ worth?

The TopHap Estimate for 138 Riva Ave, Milltown, NJ is $526,786 as of Jul 14, 2026. The likely range is $465,627 to $587,945. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 138 Riva Ave, Milltown, NJ last sell?

138 Riva Ave, Milltown, NJ last sold on Jun 22, 1992, according to the county's recorded deed.

How big is 138 Riva Ave, Milltown, NJ?

138 Riva Ave, Milltown, NJ has 1,896 square feet of living space and a 0.07-acre lot.

When was 138 Riva Ave, Milltown, NJ built?

138 Riva Ave, Milltown, NJ was built in 1918, making it 108 years old. The building has 2 stories.

What schools serve 138 Riva Ave, Milltown, NJ?

138 Riva 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 138 Riva Ave, Milltown, NJ compare to other homes in Milltown 08850?

Among the 2,852 homes in Milltown 08850, it is worth more than 16% of them ($526,786 against a typical $639,900), its price per square foot is higher than 3% of them ($278 against a typical $396), it is bigger than 65% of them (1,896 ft² against a typical 1,640 ft²), its lot is bigger than 4% of them (3,280 ft² against a typical 0.2 ac) and it is newer than 19% of them (1918 against a typical 1955). Measured against all of Middlesex County, it is worth more than 36% 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 138 Riva Ave, Milltown, NJ?

The 2025 property tax bill for 138 Riva Ave, Milltown, NJ was $10,023. The county assessed it at $144,200.

More homes on Riva Ave

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