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Single Family ResidenceResidential
$1,081,980$1,061 / 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 88How 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 $875,000 on Jul 9, 2021

47 CHESTNUT ST

ISLIP, NY 11751
2
Beds
1
Baths
1,020 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.
1992
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$1.1M
$948K low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$875,000 · Jul 9, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,688 (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.$535,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$398,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$137,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$850,000

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.33 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.92%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountySUFFOLK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1997
Lot (acres)The size of the land the home sits on, from county records.0.11
HeatingThe type of heating system in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Inferior
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 148 ft²

Transaction History(1)

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.

E
Sag Harbor Elementary SchoolB+
Elementary · Grades PK–5 · 2.9 mi
M
Pierson Middle/High SchoolA-
Middle · Grades 6–12 · 2.9 mi

District: Sag Harbor Union Free School District

Neighborhood · ZIP 11751These 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.59
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.69

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
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.15,527
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,057 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$119,597
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$137,797
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

47 Chestnut 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 95% of homes in Noyack
  • Among the highest price per square foot in Islip 11751
  • Smaller than 90% of homes in Islip 11751
  • Has a smaller lot than 97% of homes in Noyack
  • Newer than 92% of homes in Islip 11751

What homes are worth in Islip 11751

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

This home
$463K$1.7M

This home is worth more than 93% of homes in Islip 11751.

How it measures up in Islip 11751

The dot is this home. The mark in the middle is the typical home in Islip 11751.

Estimated value$1,081,980
CheaperTypical $641,086Pricier

Pricier than 93% of homes nearby

Price per ft²$1061
CheaperTypical $421Pricier

Pricier than almost all homes nearby

Living area1,020 ft²
SmallerTypical 1,692 ft²Bigger

Bigger than 10% of homes nearby

Lot size0.11 ac
SmallerTypical 0.24 acBigger

Bigger than 5% of homes nearby

Year built1992
OlderTypical 1957Newer

Newer than 92% of homes nearby

How 47 Chestnut St ranks against every home in each area.
MeasureThis homeNoyackIslip 11751Suffolk County
Estimated valuepricier than$1,081,9805% of homes93% of homes81% of homes
Price per ft²pricier than$106151% of homesalmost all homes94% of homes
Living areabigger than1,020 ft²13% of homes10% of homes12% of homes
Lot sizebigger than0.11 ac3% of homes5% of homes9% of homes
Year builtnewer than199230% of homes92% of homes78% of homes

About 47 Chestnut St

How much is 47 Chestnut St, Islip, NY worth?

The TopHap Estimate for 47 Chestnut St, Islip, NY is $1,081,980 as of Sep 24, 2026. The likely range is $948,395 to $1,215,565. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 47 Chestnut St, Islip, NY last sell?

47 Chestnut St, Islip, NY last sold on Jul 9, 2021 for $875,000, according to the county's recorded deed.

How big is 47 Chestnut St, Islip, NY?

47 Chestnut St, Islip, NY has 2 bedrooms, 1 bathrooms, 1,020 square feet of living space and a 0.11-acre lot.

When was 47 Chestnut St, Islip, NY built?

47 Chestnut St, Islip, NY was built in 1992, making it 34 years old. It is a mobile home home. The building has 2 stories.

What schools serve 47 Chestnut St, Islip, NY?

47 Chestnut St, Islip, NY is assigned to Sag Harbor Elementary School (elementary), rated B+; Pierson Middle/High School (middle), rated A-. All sit in Sag Harbor Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 47 Chestnut St, Islip, NY compare to other homes in Islip 11751?

Among the 4,170 homes in Islip 11751, it is worth more than 93% of them ($1,081,980 against a typical $641,086), its price per square foot is higher than almost all of them ($1061 against a typical $421), it is bigger than 10% of them (1,020 ft² against a typical 1,692 ft²), its lot is bigger than 5% of them (0.11 ac against a typical 0.24 ac) and it is newer than 92% of them (1992 against a typical 1957). Measured against all of Suffolk County, it is worth more than 81% 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 47 Chestnut St, Islip, NY?

The 2024 property tax bill for 47 Chestnut St, Islip, NY was $3,688. The county assessed it at $535,500.

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