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Single Family ResidenceResidential
$839,838
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 Jul 14, 2026

81 RIVER RD

GREAT RIVER, NY 11739
0
Baths
0.62 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$840K
$775K low$904K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$839,838
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$671,870

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.$49,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$23,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$25,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$701,409

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.108 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.45%
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.minimal

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
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.62
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Timber Point Elementary School
Elementary · Grades KG–2 · 1.1 mi
H
East Islip High SchoolA
High · Grades 9–12 · 2.6 mi
M
East Islip Middle SchoolC+
Middle · Grades 6–8 · 2.6 mi

District: East Islip Union Free School District

Neighborhood · ZIP 11739These 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.41
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 100.64

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.9%
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.1,550
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.290 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$150,601
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$186,236
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

81 River Rd 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 Great River 11739
  • Has a bigger lot than 82% of homes in Suffolk County

What homes are worth in Great River 11739

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

This home
$720K$2.3M

This home is worth more than 5% of homes in Great River 11739.

How it measures up in Great River 11739

The dot is this home. The mark in the middle is the typical home in Great River 11739.

Estimated value$839,838
CheaperTypical $1,114,620Pricier

Pricier than 5% of homes nearby

Lot size0.62 ac
SmallerTypical 0.5 acBigger

Bigger than 67% of homes nearby

How 81 River Rd ranks against every home in each area.
MeasureThis homeGreat RiverGreat River 11739Suffolk County
Estimated valuepricier than$839,83824% of homes5% of homes70% of homes
Lot sizebigger than0.62 ac74% of homes67% of homes82% of homes

About 81 River Rd

How much is 81 River Rd, Great River, NY worth?

The TopHap Estimate for 81 River Rd, Great River, NY is $839,838 as of Jul 14, 2026. The likely range is $775,460 to $904,216. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 81 River Rd, Great River, NY last sell?

81 River Rd, Great River, NY last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 81 River Rd, Great River, NY?

81 River Rd, Great River, NY is assigned to Timber Point Elementary School (elementary); East Islip High School (high), rated A; East Islip Middle School (middle), rated C+. All sit in East Islip Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 81 River Rd, Great River, NY compare to other homes in Great River 11739?

Among the 383 homes in Great River 11739, it is worth more than 5% of them ($839,838 against a typical $1,114,620) and its lot is bigger than 67% of them (0.62 ac against a typical 0.5 ac). Measured against all of Suffolk County, it is worth more than 70% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on River Rd

Closest homes

More homes in Great River 11739

Assigned schools

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See this home in context

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