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Single Family ResidenceResidential
$523,838$242 / 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

525 PROSPECT AVE

CENTRAL ISLIP, NY 11722
0
Baths
2,168 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.
0.45 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.

Valuation

$524K
$492K low$555K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$31,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$9,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$22,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$445,070

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.0.45
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.

H
Central Islip Senior High SchoolC-
High · Grades 9–12 · 0.6 mi
E
Anthony Alfano Elementary SchoolD
Elementary · Grades PK–6 · 0.6 mi
M
Ralph Reed SchoolD
Middle · Grades 7–8 · 1.3 mi

District: Central Islip Union Free School District

Neighborhood · ZIP 11722These 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.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.67

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
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.37,500
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,450 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$98,750
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,293
Average tempThe average temperature here across a full year.52°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.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

525 Prospect 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 87% of homes in Suffolk County
  • Among the lowest price per square foot in Suffolk County
  • Bigger than 91% of homes in Central Islip 11722
  • Has a bigger lot than 88% of homes in Central Islip 11722
  • Newer than 66% of homes in Central Islip 11722

What homes are worth in Central Islip 11722

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

This home
$416K$854K

This home is worth more than 35% of homes in Central Islip 11722.

How it measures up in Central Islip 11722

The dot is this home. The mark in the middle is the typical home in Central Islip 11722.

Estimated value$523,838
CheaperTypical $550,908Pricier

Pricier than 35% of homes nearby

Price per ft²$242
CheaperTypical $411Pricier

Pricier than 3% of homes nearby

Living area2,168 ft²
SmallerTypical 1,353 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.45 ac
SmallerTypical 0.18 acBigger

Bigger than 88% of homes nearby

Year built1973
OlderTypical 1966Newer

Newer than 66% of homes nearby

How 525 Prospect Ave ranks against every home in each area.
MeasureThis homeCentral Islip 11722Suffolk County
Estimated valuepricier than$523,83835% of homes13% of homes
Price per ft²pricier than$2423% of homesalmost no homes
Living areabigger than2,168 ft²91% of homes74% of homes
Lot sizebigger than0.45 ac88% of homes71% of homes
Year builtnewer than197366% of homes58% of homes

About 525 Prospect Ave

How much is 525 Prospect Ave, Central Islip, NY worth?

The TopHap Estimate for 525 Prospect Ave, Central Islip, NY is $523,838 as of Sep 24, 2026. The likely range is $492,369 to $555,308. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 525 Prospect Ave, Central Islip, NY last sell?

525 Prospect Ave, Central Islip, NY last sold on Dec 4, 2018, according to the county's recorded deed.

How big is 525 Prospect Ave, Central Islip, NY?

525 Prospect Ave, Central Islip, NY has 2,168 square feet of living space and a 0.45-acre lot.

When was 525 Prospect Ave, Central Islip, NY built?

525 Prospect Ave, Central Islip, NY was built in 1973, making it 53 years old.

What schools serve 525 Prospect Ave, Central Islip, NY?

525 Prospect Ave, Central Islip, NY is assigned to Central Islip Senior High School (high), rated C-; Anthony Alfano Elementary School (elementary), rated D; Ralph Reed School (middle), rated D. All sit in Central Islip Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 525 Prospect Ave, Central Islip, NY compare to other homes in Central Islip 11722?

Among the 8,246 homes in Central Islip 11722, it is worth more than 35% of them ($523,838 against a typical $550,908), its price per square foot is higher than 3% of them ($242 against a typical $411), it is bigger than 91% of them (2,168 ft² against a typical 1,353 ft²), its lot is bigger than 88% of them (0.45 ac against a typical 0.18 ac) and it is newer than 66% of them (1973 against a typical 1966). Measured against all of Suffolk County, it is worth more than 13% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Prospect Ave

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Assigned schools

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