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Single Family ResidenceResidential
$1,006,413$1,342 / 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 87How 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

51 CHESTNUT ST

ISLIP, NY 11751
2
Beds
1
Baths
750 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.
2010
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$1M
$871K low$1.1M 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.$596,900 (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.$198,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$947,460

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.36 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
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 · 750 ft²

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.

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

Owner Tools

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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

51 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 97% of homes in Noyack
  • Among the highest price per square foot in Islip 11751
  • Among the smallest homes in Islip 11751
  • Has a smaller lot than 97% of homes in Noyack
  • Newer than 98% 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
$458K$1.8M

This home is worth more than 91% 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$1,006,413
CheaperTypical $641,007Pricier

Pricier than 91% of homes nearby

Price per ft²$1342
CheaperTypical $422Pricier

Pricier than almost all homes nearby

Living area750 ft²
SmallerTypical 1,670 ft²Bigger

Smaller than almost all homes nearby

Lot size0.11 ac
SmallerTypical 0.24 acBigger

Bigger than 5% of homes nearby

Year built2010
OlderTypical 1957Newer

Newer than 98% of homes nearby

How 51 Chestnut St ranks against every home in each area.
MeasureThis homeNoyackIslip 11751Suffolk County
Estimated valuepricier than$1,006,4133% of homes91% of homes79% of homes
Price per ft²pricier than$134280% of homesalmost all homes97% of homes
Living areabigger than750 ft²3% of homesalmost no homes3% of homes
Lot sizebigger than0.11 ac3% of homes5% of homes9% of homes
Year builtnewer than201081% of homes98% of homes96% of homes

About 51 Chestnut St

How much is 51 Chestnut St, Islip, NY worth?

The TopHap Estimate for 51 Chestnut St, Islip, NY is $1,006,413 as of Sep 24, 2026. The likely range is $870,578 to $1,142,248. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 51 Chestnut St, Islip, NY last sell?

51 Chestnut St, Islip, NY last sold on Dec 21, 2018, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 51 Chestnut St, Islip, NY?

51 Chestnut St, Islip, NY has 2 bedrooms, 1 bathrooms, 750 square feet of living space and a 0.11-acre lot.

When was 51 Chestnut St, Islip, NY built?

51 Chestnut St, Islip, NY was built in 2010, making it 16 years old. It is a mobile home home. The building has 1 story.

What schools serve 51 Chestnut St, Islip, NY?

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

How does 51 Chestnut St, Islip, NY compare to other homes in Islip 11751?

Among the 4,166 homes in Islip 11751, it is worth more than 91% of them ($1,006,413 against a typical $641,007), its price per square foot is higher than almost all of them ($1342 against a typical $422), it is bigger than almost none of them (750 ft² against a typical 1,670 ft²), its lot is bigger than 5% of them (0.11 ac against a typical 0.24 ac) and it is newer than 98% of them (2010 against a typical 1957). Measured against all of Suffolk County, it is worth more than 79% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Chestnut St

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Assigned schools

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