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Single Family ResidenceResidential
$697,458$388 / 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 97How 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 $495,000 on Mar 17, 2021

256 OLSEN ST

SOUTH AMBOY, NJ 08879
0
Baths
1,798 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.
0.17 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.

Valuation

$697K
$673K low$722K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$495,000 · Mar 17, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,363 (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.$211,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$47,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$163,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$213,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$211,000

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.12 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.0.17
ConstructionThe main material the home's frame and walls are built from.Brick
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.

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

E
Dwight D. Eisenhower Elementary SchoolB
Elementary · Grades KG–3 · 0.5 mi
H
Sayreville War Memorial High SchoolD+
High · Grades 9–12 · 2.0 mi
M
Sayreville Middle SchoolC+
Middle · Grades 6–8 · 2.3 mi

District: Sayreville Borough School District

Neighborhood · ZIP 08879These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.23,254
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,866 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,649
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,457
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%

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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

256 Olsen 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 90% of homes in South Amboy 08879
  • Costs more per square foot than 66% of homes in Middlesex County
  • Bigger than 78% of homes in South Amboy 08879
  • Has a bigger lot than 80% of homes in South Amboy 08879
  • Newer than 74% of homes in South Amboy 08879

What homes are worth in South Amboy 08879

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

This home
$310K$967K

This home is worth more than 90% of homes in South Amboy 08879.

How it measures up in South Amboy 08879

The dot is this home. The mark in the middle is the typical home in South Amboy 08879.

Estimated value$697,458
CheaperTypical $516,801Pricier

Pricier than 90% of homes nearby

Price per ft²$388
CheaperTypical $374Pricier

Pricier than 56% of homes nearby

Living area1,798 ft²
SmallerTypical 1,414 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.17 ac
SmallerTypical 0.11 acBigger

Bigger than 80% of homes nearby

Year built1970
OlderTypical 1954Newer

Newer than 74% of homes nearby

How 256 Olsen St ranks against every home in each area.
MeasureThis homeSouth Amboy 08879Middlesex County
Estimated valuepricier than$697,45890% of homes71% of homes
Price per ft²pricier than$38856% of homes66% of homes
Living areabigger than1,798 ft²78% of homes60% of homes
Lot sizebigger than0.17 ac80% of homes59% of homes
Year builtnewer than197074% of homes53% of homes

About 256 Olsen St

How much is 256 Olsen St, South Amboy, NJ worth?

The TopHap Estimate for 256 Olsen St, South Amboy, NJ is $697,458 as of Sep 24, 2026. The likely range is $673,372 to $721,544. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 256 Olsen St, South Amboy, NJ last sell?

256 Olsen St, South Amboy, NJ last sold on Mar 17, 2021 for $495,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 256 Olsen St, South Amboy, NJ?

256 Olsen St, South Amboy, NJ has 1,798 square feet of living space and a 0.17-acre lot.

When was 256 Olsen St, South Amboy, NJ built?

256 Olsen St, South Amboy, NJ was built in 1970, making it 56 years old.

What schools serve 256 Olsen St, South Amboy, NJ?

256 Olsen St, South Amboy, NJ is assigned to Dwight D. Eisenhower Elementary School (elementary), rated B; Sayreville War Memorial High School (high), rated D+; Sayreville Middle School (middle), rated C+. All sit in Sayreville Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 256 Olsen St, South Amboy, NJ compare to other homes in South Amboy 08879?

Among the 7,042 homes in South Amboy 08879, it is worth more than 90% of them ($697,458 against a typical $516,801), its price per square foot is higher than 56% of them ($388 against a typical $374), it is bigger than 78% of them (1,798 ft² against a typical 1,414 ft²), its lot is bigger than 80% of them (0.17 ac against a typical 0.11 ac) and it is newer than 74% of them (1970 against a typical 1954). Measured against all of Middlesex County, it is worth more than 71% 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 256 Olsen St, South Amboy, NJ?

The 2025 property tax bill for 256 Olsen St, South Amboy, NJ was $13,363. The county assessed it at $211,000.

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