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Single Family ResidenceResidential
$630,285$456 / 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 Oct 21, 2026
Last sold for $360,000 on Feb 5, 2019

21 KARP DR

ISLIP TERRACE, NY 11752
0
Baths
1,383 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.

Valuation

$630K
$591K low$670K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$360,000 · Feb 5, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,072 (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.$36,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$29,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$519,718

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.0.26
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.

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

H
East Islip High SchoolB+
High · Grades 9–12 · 0.8 mi
M
East Islip Middle SchoolA
Middle · Grades 6–8 · 0.8 mi
E
Connetquot Elementary School
Elementary · Grades KG–2 · 1.3 mi

District: East Islip Union Free School District

Neighborhood · ZIP 11752These 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.43
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.68

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.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
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.9,076
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,454 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$142,239
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$153,915
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

21 Karp Dr 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 65% of homes in Suffolk County
  • Smaller than 67% of homes in Suffolk County
  • Has a bigger lot than 68% of homes in Islip Terrace
  • Older than 81% of homes in Suffolk County

What homes are worth in Islip Terrace 11752

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

This home
$510K$942K

This home is worth more than 37% of homes in Islip Terrace 11752.

How it measures up in Islip Terrace 11752

The dot is this home. The mark in the middle is the typical home in Islip Terrace 11752.

Estimated value$630,285
CheaperTypical $658,137Pricier

Pricier than 37% of homes nearby

Price per ft²$456
CheaperTypical $428Pricier

Pricier than 57% of homes nearby

Living area1,383 ft²
SmallerTypical 1,606 ft²Bigger

Bigger than 36% of homes nearby

Lot size0.26 ac
SmallerTypical 0.27 acBigger

Bigger than 46% of homes nearby

Year built1953
OlderTypical 1963Newer

Newer than 22% of homes nearby

How 21 Karp Dr ranks against every home in each area.
MeasureThis homeIslip TerraceIslip Terrace 11752Suffolk County
Estimated valuepricier than$630,28539% of homes37% of homes35% of homes
Price per ft²pricier than$45653% of homes57% of homes62% of homes
Living areabigger than1,383 ft²41% of homes36% of homes33% of homes
Lot sizebigger than0.26 ac68% of homes46% of homes48% of homes
Year builtnewer than195332% of homes22% of homes19% of homes

About 21 Karp Dr

How much is 21 Karp Dr, Islip Terrace, NY worth?

The TopHap Estimate for 21 Karp Dr, Islip Terrace, NY is $630,285 as of Oct 21, 2026. The likely range is $590,658 to $669,912. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Karp Dr, Islip Terrace, NY last sell?

21 Karp Dr, Islip Terrace, NY last sold on Feb 5, 2019 for $360,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Karp Dr, Islip Terrace, NY?

21 Karp Dr, Islip Terrace, NY has 1,383 square feet of living space and a 0.26-acre lot.

When was 21 Karp Dr, Islip Terrace, NY built?

21 Karp Dr, Islip Terrace, NY was built in 1953, making it 73 years old.

What schools serve 21 Karp Dr, Islip Terrace, NY?

21 Karp Dr, Islip Terrace, NY is assigned to East Islip High School (high), rated B+; East Islip Middle School (middle), rated A; Connetquot Elementary School (elementary). All sit in East Islip Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Karp Dr, Islip Terrace, NY compare to other homes in Islip Terrace 11752?

Among the 2,899 homes in Islip Terrace 11752, it is worth more than 37% of them ($630,285 against a typical $658,137), its price per square foot is higher than 57% of them ($456 against a typical $428), it is bigger than 36% of them (1,383 ft² against a typical 1,606 ft²), its lot is bigger than 46% of them (0.26 ac against a typical 0.27 ac) and it is newer than 22% of them (1953 against a typical 1963). Measured against all of Suffolk County, it is worth more than 35% 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 Karp Dr, Islip Terrace, NY?

The 2024 property tax bill for 21 Karp Dr, Islip Terrace, NY was $11,072. The county assessed it at $36,900.

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