Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$618,373$386 / 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 92How 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 $469,000 on Mar 29, 2021

171 E MADISON ST

EAST ISLIP, NY 11730
0
Baths
1,601 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.

Valuation

$618K
$571K low$665K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$469,000 · Mar 29, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,633 (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.$32,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$8,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$24,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$460,564

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.0.22
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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 · 0.7 mi
M
East Islip Middle SchoolA
Middle · Grades 6–8 · 0.7 mi
E
Connetquot Elementary School
Elementary · Grades KG–2 · 0.9 mi

District: East Islip Union Free School District

Neighborhood · ZIP 11730These 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.53
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
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.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.14,421
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,954 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,646
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$163,331
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%

Owner Tools

Do you own this home?
Claim this home

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

171 E Madison 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 80% of homes in East Islip 11730
  • Costs less per square foot than 81% of homes in East Islip 11730
  • Has a smaller lot than 84% of homes in East Islip 11730
  • Older than 96% of homes in Suffolk County

What homes are worth in East Islip 11730

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

This home
$500K$2.3M

This home is worth more than 20% of homes in East Islip 11730.

How it measures up in East Islip 11730

The dot is this home. The mark in the middle is the typical home in East Islip 11730.

Estimated value$618,373
CheaperTypical $717,670Pricier

Pricier than 20% of homes nearby

Price per ft²$386
CheaperTypical $464Pricier

Pricier than 19% of homes nearby

Living area1,601 ft²
SmallerTypical 1,608 ft²Bigger

Bigger than 47% of homes nearby

Lot size0.22 ac
SmallerTypical 0.25 acBigger

Bigger than 16% of homes nearby

Year built1928
OlderTypical 1959Newer

Newer than 9% of homes nearby

How 171 E Madison St ranks against every home in each area.
MeasureThis homeEast Islip 11730Suffolk County
Estimated valuepricier than$618,37320% of homes33% of homes
Price per ft²pricier than$38619% of homes41% of homes
Living areabigger than1,601 ft²47% of homes45% of homes
Lot sizebigger than0.22 ac16% of homes32% of homes
Year builtnewer than19289% of homes4% of homes

About 171 E Madison St

How much is 171 E Madison St, East Islip, NY worth?

The TopHap Estimate for 171 E Madison St, East Islip, NY is $618,373 as of Sep 24, 2026. The likely range is $571,403 to $665,343. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 171 E Madison St, East Islip, NY last sell?

171 E Madison St, East Islip, NY last sold on Mar 29, 2021 for $469,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 171 E Madison St, East Islip, NY?

171 E Madison St, East Islip, NY has 1,601 square feet of living space and a 0.22-acre lot.

When was 171 E Madison St, East Islip, NY built?

171 E Madison St, East Islip, NY was built in 1928, making it 98 years old.

What schools serve 171 E Madison St, East Islip, NY?

171 E Madison St, East Islip, 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 171 E Madison St, East Islip, NY compare to other homes in East Islip 11730?

Among the 4,388 homes in East Islip 11730, it is worth more than 20% of them ($618,373 against a typical $717,670), its price per square foot is higher than 19% of them ($386 against a typical $464), it is bigger than 47% of them (1,601 ft² against a typical 1,608 ft²), its lot is bigger than 16% of them (0.22 ac against a typical 0.25 ac) and it is newer than 9% of them (1928 against a typical 1959). Measured against all of Suffolk County, it is worth more than 33% 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 171 E Madison St, East Islip, NY?

The 2024 property tax bill for 171 E Madison St, East Islip, NY was $9,633. The county assessed it at $32,700.

More homes on E Madison St

Closest homes

More homes in East Islip 11730

Assigned schools

Explore the area

See this home in context

Open 171 E Madison St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map