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Single Family ResidenceResidential
$774,404$423 / 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 98How 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
Last sold for $775,000 on Aug 31, 2026

103 RIVER ST

MONROE TOWNSHIP, NJ 08831
0
Baths
1,831 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.
0.34 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$774K
$755K low$794K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$775,000 · Aug 31, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,108 (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.$351,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$184,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$167,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$351,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$351,700

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.8 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
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.34
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

E
Mill Lake Elementary SchoolB-
Elementary · Grades PK–2 · 1.2 mi
H
Monroe Township High SchoolB
High · Grades 9–12 · 4.1 mi
M
Monroe Township Middle SchoolA
Middle · Grades 6–8 · 4.4 mi

District: Monroe Township School District

Neighborhood · ZIP 08831These 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.58
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.90

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.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.1%
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.58,546
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,176 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$116,679
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$146,555
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

103 River 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 79% of homes in Middlesex County
  • Costs more per square foot than 95% of homes in Monroe Township 08831
  • Has a bigger lot than 87% of homes in Monroe Township 08831
  • Older than 87% of homes in Monroe Township 08831

What homes are worth in Monroe Township 08831

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

This home
$238K$1.5M

This home is worth more than 66% of homes in Monroe Township 08831.

How it measures up in Monroe Township 08831

The dot is this home. The mark in the middle is the typical home in Monroe Township 08831.

Estimated value$774,404
CheaperTypical $647,942Pricier

Pricier than 66% of homes nearby

Price per ft²$423
CheaperTypical $319Pricier

Pricier than 95% of homes nearby

Living area1,831 ft²
SmallerTypical 1,963 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.34 ac
SmallerTypical 1,525 ft²Bigger

Bigger than 87% of homes nearby

Year built1970
OlderTypical 1996Newer

Newer than 13% of homes nearby

How 103 River St ranks against every home in each area.
MeasureThis homeMonroe Township 08831Middlesex County
Estimated valuepricier than$774,40466% of homes79% of homes
Price per ft²pricier than$42395% of homes79% of homes
Living areabigger than1,831 ft²45% of homes62% of homes
Lot sizebigger than0.34 ac87% of homes86% of homes
Year builtnewer than197013% of homes53% of homes

About 103 River St

How much is 103 River St, Monroe Township, NJ worth?

The TopHap Estimate for 103 River St, Monroe Township, NJ is $774,404 as of Sep 24, 2026. The likely range is $755,086 to $793,722. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 103 River St, Monroe Township, NJ last sell?

103 River St, Monroe Township, NJ last sold on Aug 31, 2026 for $775,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 103 River St, Monroe Township, NJ?

103 River St, Monroe Township, NJ has 1,831 square feet of living space and a 0.34-acre lot.

When was 103 River St, Monroe Township, NJ built?

103 River St, Monroe Township, NJ was built in 1970, making it 56 years old. The building has 1 story.

What schools serve 103 River St, Monroe Township, NJ?

103 River St, Monroe Township, NJ is assigned to Mill Lake Elementary School (elementary), rated B-; Monroe Township High School (high), rated B; Monroe Township Middle School (middle), rated A. All sit in Monroe Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 103 River St, Monroe Township, NJ compare to other homes in Monroe Township 08831?

Among the 24,017 homes in Monroe Township 08831, it is worth more than 66% of them ($774,404 against a typical $647,942), its price per square foot is higher than 95% of them ($423 against a typical $319), it is bigger than 45% of them (1,831 ft² against a typical 1,963 ft²), its lot is bigger than 87% of them (0.34 ac against a typical 1,525 ft²) and it is newer than 13% of them (1970 against a typical 1996). Measured against all of Middlesex County, it is worth more than 79% 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 103 River St, Monroe Township, NJ?

The 2025 property tax bill for 103 River St, Monroe Township, NJ was $10,108. The county assessed it at $351,700.

More homes on River St

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Assigned schools

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