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Single Family ResidenceResidential
$369,071$461 / 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 85How 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

18A SEAFOAM AVE

WINFIELD, NJ
0
Baths
800 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.
483 ft²
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$369K
$313K low$426K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,472 (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.$19,100 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$19,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$19,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$19,100

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyUNION
Lot (acres)The size of the land the home sits on, from county records.0.01
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
Winfield Township SchoolC-
Elementary · Grades PK–8 · 0.1 mi
H
David Bearley Middle/High SchoolC-
High · Grades 7–12 · 3.1 mi

District: Winfield Township School District

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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

18a Seafoam 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 96% of homes in Union County
  • Costs more per square foot than 68% of homes in Union County
  • Smaller than 96% of homes in Union County
  • Among the smallest lots in Union County

How it measures up in Union County

The dot is this home. The mark in the middle is the typical home in Union County.

Estimated value$369,071
CheaperTypical $651,331Pricier

Pricier than 4% of homes nearby

Price per ft²$461
CheaperTypical $405Pricier

Pricier than 68% of homes nearby

Living area800 ft²
SmallerTypical 1,764 ft²Bigger

Bigger than 4% of homes nearby

Lot size483 ft²
SmallerTypical 0.14 acBigger

Smaller than almost all homes nearby

How 18a Seafoam Ave ranks against every home in each area.
MeasureThis homeUnion County
Estimated valuepricier than$369,0714% of homes
Price per ft²pricier than$46168% of homes
Living areabigger than800 ft²4% of homes
Lot sizebigger than483 ft²almost no homes

About 18a Seafoam Ave

How much is 18a Seafoam Ave, Winfield, NJ worth?

The TopHap Estimate for 18a Seafoam Ave, Winfield, NJ is $369,071 as of Sep 24, 2026. The likely range is $312,550 to $425,592. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18a Seafoam Ave, Winfield, NJ last sell?

18a Seafoam Ave, Winfield, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18a Seafoam Ave, Winfield, NJ?

18a Seafoam Ave, Winfield, NJ has 800 square feet of living space and a 0.01-acre lot.

What schools serve 18a Seafoam Ave, Winfield, NJ?

18a Seafoam Ave, Winfield, NJ is assigned to Winfield Township School (elementary), rated C-; David Bearley Middle/High School (high), rated C-. All sit in Winfield Township School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18a Seafoam Ave, Winfield, NJ compare to other homes in Union County?

Among the 134,717 homes in Union County, it is worth more than 4% of them ($369,071 against a typical $651,331), its price per square foot is higher than 68% of them ($461 against a typical $405), it is bigger than 4% of them (800 ft² against a typical 1,764 ft²) and its lot is bigger than almost none of them (483 ft² against a typical 0.14 ac). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 18a Seafoam Ave, Winfield, NJ?

The 2025 property tax bill for 18a Seafoam Ave, Winfield, NJ was $4,472. The county assessed it at $19,100.

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