Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$577,875
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 90How 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

20 RIVIERA DR

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

Valuation

$578K
$521K low$635K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,365 (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.$4,275 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$315
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,960
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$534,375

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.0.25
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Accompsett Middle SchoolC+
Middle · Grades 6–8 · 1.4 mi
H
Smithtown High School WestA
High · Grades 9–12 · 1.5 mi
E
Smithtown Elementary SchoolB
Elementary · Grades KG–5 · 1.9 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

20 Riviera Dr 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 Smithtown
  • Has a smaller lot than 78% of homes in Smithtown

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
$528K$1.6M

This home is worth more than 4% 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$577,875
CheaperTypical $797,995Pricier

Pricier than 4% of homes nearby

Lot size0.25 ac
SmallerTypical 0.38 acBigger

Bigger than 30% of homes nearby

How 20 Riviera Dr ranks against every home in each area.
MeasureThis homeSmithtownSmithtown 11787Suffolk County
Estimated valuepricier than$577,8753% of homes4% of homes22% of homes
Lot sizebigger than0.25 ac22% of homes30% of homes46% of homes

About 20 Riviera Dr

How much is 20 Riviera Dr, Smithtown, NY worth?

The TopHap Estimate for 20 Riviera Dr, Smithtown, NY is $577,875 as of Jul 14, 2026. The likely range is $521,080 to $634,670. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Riviera Dr, Smithtown, NY last sell?

20 Riviera Dr, Smithtown, NY last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 20 Riviera Dr, Smithtown, NY?

20 Riviera Dr, Smithtown, NY is assigned to Accompsett Middle School (middle), rated C+; Smithtown High School West (high), rated A; Smithtown 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 20 Riviera Dr, Smithtown, NY compare to other homes in Smithtown 11787?

Among the 11,478 homes in Smithtown 11787, it is worth more than 4% of them ($577,875 against a typical $797,995) and its lot is bigger than 30% of them (0.25 ac against a typical 0.38 ac). Measured against all of Suffolk County, it is worth more than 22% 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 20 Riviera Dr, Smithtown, NY?

The 2024 property tax bill for 20 Riviera Dr, Smithtown, NY was $8,365. The county assessed it at $4,275.

More homes on Riviera Dr

Closest homes

More homes in Smithtown 11787

Assigned schools

Explore the area

See this home in context

Open 20 Riviera Dr 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