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Single Family ResidenceResidential
$706,104$539 / 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 94How 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

343 RIVER RD

SAINT JAMES, NY 11780
2
Beds
1
Baths
1,309 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.
1.4 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$706K
$661K low$752K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,795 (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.$4,510 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,010
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$563,750

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.28 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountySUFFOLK
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.Suburban

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 · 0.6 mi
H
Smithtown High School EastA+
High · Grades 9–12 · 1.2 mi
E
Dogwood Elementary SchoolB
Elementary · Grades KG–5 · 1.4 mi

District: Smithtown Central School District

Neighborhood · ZIP 11780These 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.37
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.95%
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.2.0%
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.16,050
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,043 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$149,578
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$186,897
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

343 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 78% of homes in Smithtown
  • Costs more per square foot than 81% of homes in Smithtown
  • Smaller than 84% of homes in Smithtown
  • Has a bigger lot than 98% of homes in Smithtown
  • Older than 75% of homes in Saint James 11780

What homes are worth in Saint James 11780

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

This home
$442K$2.7M

This home is worth more than 32% of homes in Saint James 11780.

How it measures up in Saint James 11780

The dot is this home. The mark in the middle is the typical home in Saint James 11780.

Estimated value$706,104
CheaperTypical $842,970Pricier

Pricier than 32% of homes nearby

Price per ft²$539
CheaperTypical $455Pricier

Pricier than 76% of homes nearby

Living area1,309 ft²
SmallerTypical 2,160 ft²Bigger

Bigger than 18% of homes nearby

Lot size1.4 ac
SmallerTypical 0.47 acBigger

Bigger than 82% of homes nearby

Year built1960
OlderTypical 1972Newer

Newer than 25% of homes nearby

How 343 River Rd ranks against every home in each area.
MeasureThis homeSmithtownSaint James 11780Suffolk County
Estimated valuepricier than$706,10422% of homes32% of homes52% of homes
Price per ft²pricier than$53981% of homes76% of homes77% of homes
Living areabigger than1,309 ft²16% of homes18% of homes29% of homes
Lot sizebigger than1.4 ac98% of homes82% of homes96% of homes
Year builtnewer than196028% of homes25% of homes32% of homes

About 343 River Rd

How much is 343 River Rd, Saint James, NY worth?

The TopHap Estimate for 343 River Rd, Saint James, NY is $706,104 as of Jul 14, 2026. The likely range is $660,670 to $751,538. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 343 River Rd, Saint James, NY last sell?

343 River Rd, Saint James, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 343 River Rd, Saint James, NY?

343 River Rd, Saint James, NY has 2 bedrooms, 1 bathrooms and 1,309 square feet of living space.

When was 343 River Rd, Saint James, NY built?

343 River Rd, Saint James, NY was built in 1960, making it 66 years old. It is a ranch home. The building has 1 story.

What schools serve 343 River Rd, Saint James, NY?

343 River Rd, Saint James, NY is assigned to Nesaquake Middle School (middle), rated B; Smithtown High School East (high), rated A+; Dogwood 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 343 River Rd, Saint James, NY compare to other homes in Saint James 11780?

Among the 5,598 homes in Saint James 11780, it is worth more than 32% of them ($706,104 against a typical $842,970), its price per square foot is higher than 76% of them ($539 against a typical $455), it is bigger than 18% of them (1,309 ft² against a typical 2,160 ft²), its lot is bigger than 82% of them (1.4 ac against a typical 0.47 ac) and it is newer than 25% of them (1960 against a typical 1972). Measured against all of Suffolk County, it is worth more than 52% 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 343 River Rd, Saint James, NY?

The 2024 property tax bill for 343 River Rd, Saint James, NY was $11,795. The county assessed it at $4,510.

More homes on River Rd

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More homes in Saint James 11780

Assigned schools

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