Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$758,050
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

417 RIVER RD

SMITHTOWN, NY 11787
0
Baths
2.61 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$758K
$701K low$815K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,321 (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.$5,090 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,590
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$636,250

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySUFFOLK
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.

M
Nesaquake Middle SchoolB
Middle · Grades 6–8 · 1.0 mi
H
Smithtown High School EastA+
High · Grades 9–12 · 1.6 mi
E
Saint James Elementary SchoolB-
Elementary · Grades KG–5 · 1.7 mi

District: Smithtown Central School District

Neighborhood · ZIP 11787These 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.44
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
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.29%
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.1.1%
PopulationHow many people live in this area.34,997
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,227 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,428
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$168,182
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

417 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.

  • Among the largest lots in Smithtown 11787

What homes are worth in Smithtown 11787

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

This home
$529K$1.6M

This home is worth more than 39% of homes in Smithtown 11787.

How it measures up in Smithtown 11787

The dot is this home. The mark in the middle is the typical home in Smithtown 11787.

Estimated value$758,050
CheaperTypical $799,633Pricier

Pricier than 39% of homes nearby

Lot size2.61 ac
SmallerTypical 0.38 acBigger

Bigger than almost all homes nearby

How 417 River Rd ranks against every home in each area.
MeasureThis homeSmithtown 11787Suffolk County
Estimated valuepricier than$758,05039% of homes61% of homes
Lot sizebigger than2.61 acalmost all homesalmost all homes

About 417 River Rd

How much is 417 River Rd, Smithtown, NY worth?

The TopHap Estimate for 417 River Rd, Smithtown, NY is $758,050 as of Jul 14, 2026. The likely range is $700,726 to $815,374. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 417 River Rd, Smithtown, NY last sell?

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

What schools serve 417 River Rd, Smithtown, NY?

417 River Rd, Smithtown, NY is assigned to Nesaquake Middle School (middle), rated B; Smithtown High School East (high), rated A+; Saint James Elementary School (elementary), rated B-. All sit in Smithtown Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 417 River Rd, Smithtown, NY compare to other homes in Smithtown 11787?

Among the 11,478 homes in Smithtown 11787, it is worth more than 39% of them ($758,050 against a typical $799,633) and its lot is bigger than almost all of them (2.61 ac against a typical 0.38 ac). Measured against all of Suffolk County, it is worth more than 61% 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 417 River Rd, Smithtown, NY?

The 2024 property tax bill for 417 River Rd, Smithtown, NY was $8,321. The county assessed it at $5,090.

More homes on River Rd

Closest homes

More homes in Smithtown 11787

Assigned schools

Explore the area

See this home in context

Open 417 River Rd 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