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Single Family ResidenceResidential
$514,998$417 / 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 95How 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
Last sold for $280,000 on Jun 5, 2019

21 N ROBERT ST

SEWAREN, NJ 07077
0
Baths
1,236 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.
0.11 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.
1
StoriesHow many floors the home has above ground.

Valuation

$515K
$488K low$542K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$280,000 · Jun 5, 2019
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$514,998
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$411,998

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,927 (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.$69,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$54,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$69,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$69,500

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.Cape Cod
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.12
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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

Foreclosure Filings(2)

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

E
Matthew Jago Elementary SchoolD+
Elementary · Grades KG–5 · 0.3 mi
H
Woodbridge High SchoolC-
High · Grades 9–12 · 1.5 mi
M
Avenel Middle SchoolD+
Middle · Grades 6–8 · 2.6 mi

District: Woodbridge Township School District

Neighborhood · ZIP 07077These 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.119
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.102

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
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.3,014
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,246 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,765
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,748
Average tempThe average temperature here across a full year.54°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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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 N Robert 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 less than 67% of homes in Middlesex County
  • Costs more per square foot than 77% of homes in Middlesex County
  • Smaller than 75% of homes in Middlesex County
  • Has a smaller lot than 89% of homes in Sewaren 07077
  • Older than 97% of homes in Middlesex County

What homes are worth in Sewaren 07077

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

This home
$381K$739K

This home is worth more than 57% of homes in Sewaren 07077.

How it measures up in Sewaren 07077

The dot is this home. The mark in the middle is the typical home in Sewaren 07077.

Estimated value$514,998
CheaperTypical $503,811Pricier

Pricier than 57% of homes nearby

Price per ft²$417
CheaperTypical $372Pricier

Pricier than 70% of homes nearby

Living area1,236 ft²
SmallerTypical 1,344 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.11 ac
SmallerTypical 0.14 acBigger

Bigger than 11% of homes nearby

Year built1906
OlderTypical 1953Newer

Newer than 10% of homes nearby

How 21 N Robert St ranks against every home in each area.
MeasureThis homeSewaren 07077Middlesex County
Estimated valuepricier than$514,99857% of homes33% of homes
Price per ft²pricier than$41770% of homes77% of homes
Living areabigger than1,236 ft²43% of homes25% of homes
Lot sizebigger than0.11 ac11% of homes32% of homes
Year builtnewer than190610% of homes3% of homes

About 21 N Robert St

How much is 21 N Robert St, Sewaren, NJ worth?

The TopHap Estimate for 21 N Robert St, Sewaren, NJ is $514,998 as of Jul 14, 2026. The likely range is $488,121 to $541,875. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 N Robert St, Sewaren, NJ last sell?

21 N Robert St, Sewaren, NJ last sold on Jun 5, 2019 for $280,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 N Robert St, Sewaren, NJ?

21 N Robert St, Sewaren, NJ has 1,236 square feet of living space and a 0.12-acre lot.

When was 21 N Robert St, Sewaren, NJ built?

21 N Robert St, Sewaren, NJ was built in 1906, making it 120 years old. It is a cape cod home. The building has 1 story.

What schools serve 21 N Robert St, Sewaren, NJ?

21 N Robert St, Sewaren, NJ is assigned to Matthew Jago Elementary School (elementary), rated D+; Woodbridge High School (high), rated C-; Avenel Middle School (middle), rated D+. All sit in Woodbridge Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 N Robert St, Sewaren, NJ compare to other homes in Sewaren 07077?

Among the 825 homes in Sewaren 07077, it is worth more than 57% of them ($514,998 against a typical $503,811), its price per square foot is higher than 70% of them ($417 against a typical $372), it is bigger than 43% of them (1,236 ft² against a typical 1,344 ft²), its lot is bigger than 11% of them (0.11 ac against a typical 0.14 ac) and it is newer than 10% of them (1906 against a typical 1953). Measured against all of Middlesex County, it is worth more than 33% 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 N Robert St, Sewaren, NJ?

The 2025 property tax bill for 21 N Robert St, Sewaren, NJ was $9,927. The county assessed it at $69,500.

Closest homes

More homes in Sewaren 07077

Assigned schools

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