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Single Family ResidenceResidential
$541,556$542 / 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 94How 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 $325,000 on Apr 3, 2018

542 PROSPECT ST

COPIAGUE, NY 11726
1
Baths
1,000 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.
1975
Year BuiltThe year the home was originally built, according to county records.

Valuation

$542K
$509K low$575K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$325,000 · Apr 3, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,738 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$2,440 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$130
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,310
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$413,559

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.12
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(7)

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.

H
Walter G O'Connell Copiague High SchoolC
High · Grades 9–12 · 0.7 mi
M
Copiague Middle SchoolC-
Middle · Grades 6–8 · 0.7 mi
E
Deauville Gardens East Elementary SchoolB
Elementary · Grades KG–5 · 2.0 mi

District: Copiague Union Free School District

Neighborhood · ZIP 11726These 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.80
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.77

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.21,341
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,549 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$103,288
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,923
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.58%

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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

542 Prospect 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 84% of homes in Suffolk County
  • Costs more per square foot than 88% of homes in Copiague 11726
  • Smaller than 89% of homes in Copiague 11726
  • Has a smaller lot than 95% of homes in North Amityville
  • Newer than 80% of homes in Copiague 11726

What homes are worth in Copiague 11726

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

This home
$408K$1.7M

This home is worth more than 24% of homes in Copiague 11726.

How it measures up in Copiague 11726

The dot is this home. The mark in the middle is the typical home in Copiague 11726.

Estimated value$541,556
CheaperTypical $605,578Pricier

Pricier than 24% of homes nearby

Price per ft²$542
CheaperTypical $414Pricier

Pricier than 88% of homes nearby

Living area1,000 ft²
SmallerTypical 1,547 ft²Bigger

Bigger than 11% of homes nearby

Lot size0.11 ac
SmallerTypical 0.17 acBigger

Bigger than 13% of homes nearby

Year built1975
OlderTypical 1958Newer

Newer than 80% of homes nearby

How 542 Prospect St ranks against every home in each area.
MeasureThis homeNorth AmityvilleCopiague 11726Suffolk County
Estimated valuepricier than$541,55640% of homes24% of homes16% of homes
Price per ft²pricier than$54284% of homes88% of homes77% of homes
Living areabigger than1,000 ft²23% of homes11% of homes11% of homes
Lot sizebigger than0.11 ac5% of homes13% of homes9% of homes
Year builtnewer than197574% of homes80% of homes61% of homes

About 542 Prospect St

How much is 542 Prospect St, Copiague, NY worth?

The TopHap Estimate for 542 Prospect St, Copiague, NY is $541,556 as of Sep 24, 2026. The likely range is $508,509 to $574,603. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 542 Prospect St, Copiague, NY last sell?

542 Prospect St, Copiague, NY last sold on Apr 3, 2018 for $325,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 542 Prospect St, Copiague, NY?

542 Prospect St, Copiague, NY has 1 bathrooms, 1,000 square feet of living space and a 0.12-acre lot.

When was 542 Prospect St, Copiague, NY built?

542 Prospect St, Copiague, NY was built in 1975, making it 51 years old.

What schools serve 542 Prospect St, Copiague, NY?

542 Prospect St, Copiague, NY is assigned to Walter G O'Connell Copiague High School (high), rated C; Copiague Middle School (middle), rated C-; Deauville Gardens East Elementary School (elementary), rated B. All sit in Copiague Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 542 Prospect St, Copiague, NY compare to other homes in Copiague 11726?

Among the 4,741 homes in Copiague 11726, it is worth more than 24% of them ($541,556 against a typical $605,578), its price per square foot is higher than 88% of them ($542 against a typical $414), it is bigger than 11% of them (1,000 ft² against a typical 1,547 ft²), its lot is bigger than 13% of them (0.11 ac against a typical 0.17 ac) and it is newer than 80% of them (1975 against a typical 1958). Measured against all of Suffolk County, it is worth more than 16% 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 542 Prospect St, Copiague, NY?

The 2024 property tax bill for 542 Prospect St, Copiague, NY was $8,738. The county assessed it at $2,440.

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Assigned schools

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