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Single Family ResidenceResidential
$426,982$356 / 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 85How 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
Last sold for $150,000 on Apr 12, 2016

91 RIVERSIDE AVE

FLANDERS, NY 11901
2
Beds
1
Baths
1,199 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$427K
$364K low$490K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$150,000 · Apr 12, 2016
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.$426,982
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$341,586

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,145 (2020)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$190,200 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$68,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$121,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$190,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$301,905

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
Lot (acres)The size of the land the home sits on, from county records.0.18
HeatingThe type of heating system in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 450 ft²Porch · 403 ft²

Transaction History(6)

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
Phillips Avenue SchoolD-
Elementary · Grades PK–4 · 1.0 mi
M
Riverhead Middle SchoolD
Middle · Grades 6–8 · 2.4 mi
H
Riverhead Senior High SchoolC-
High · Grades 9–12 · 2.6 mi

District: Riverhead Central School District

Neighborhood · ZIP 11901These 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.129
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 100.50

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.29,638
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.531 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$77,609
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,711
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

91 Riverside Ave 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 96% of homes in Suffolk County
  • Costs less per square foot than 79% of homes in Flanders
  • Smaller than 78% of homes in Suffolk County
  • Has a smaller lot than 83% of homes in Riverhead 11901
  • Older than 91% of homes in Flanders

What homes are worth in Riverhead 11901

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

This home
$354K$1.9M

This home is worth more than 8% of homes in Riverhead 11901.

How it measures up in Riverhead 11901

The dot is this home. The mark in the middle is the typical home in Riverhead 11901.

Estimated value$426,982
CheaperTypical $635,171Pricier

Pricier than 8% of homes nearby

Price per ft²$356
CheaperTypical $424Pricier

Pricier than 21% of homes nearby

Living area1,199 ft²
SmallerTypical 1,380 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.18 ac
SmallerTypical 0.32 acBigger

Bigger than 17% of homes nearby

Year built1987
OlderTypical 1991Newer

Newer than 40% of homes nearby

How 91 Riverside Ave ranks against every home in each area.
MeasureThis homeFlandersRiverhead 11901Suffolk County
Estimated valuepricier than$426,98218% of homes8% of homes4% of homes
Price per ft²pricier than$35621% of homes21% of homes29% of homes
Living areabigger than1,199 ft²50% of homes37% of homes22% of homes
Lot sizebigger than0.18 ac22% of homes17% of homes25% of homes
Year builtnewer than19879% of homes40% of homes71% of homes

About 91 Riverside Ave

How much is 91 Riverside Ave, Flanders, NY worth?

The TopHap Estimate for 91 Riverside Ave, Flanders, NY is $426,982 as of Jul 14, 2026. The likely range is $363,759 to $490,205. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 91 Riverside Ave, Flanders, NY last sell?

91 Riverside Ave, Flanders, NY last sold on Apr 12, 2016 for $150,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 91 Riverside Ave, Flanders, NY?

91 Riverside Ave, Flanders, NY has 2 bedrooms, 1 bathrooms, 1,199 square feet of living space and a 0.18-acre lot.

When was 91 Riverside Ave, Flanders, NY built?

91 Riverside Ave, Flanders, NY was built in 1987, making it 39 years old. It is a ranch home. The building has 1 story.

What schools serve 91 Riverside Ave, Flanders, NY?

91 Riverside Ave, Flanders, NY is assigned to Phillips Avenue School (elementary), rated D-; Riverhead Middle School (middle), rated D; Riverhead Senior High School (high), rated C-. All sit in Riverhead Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 91 Riverside Ave, Flanders, NY compare to other homes in Riverhead 11901?

Among the 9,718 homes in Riverhead 11901, it is worth more than 8% of them ($426,982 against a typical $635,171), its price per square foot is higher than 21% of them ($356 against a typical $424), it is bigger than 37% of them (1,199 ft² against a typical 1,380 ft²), its lot is bigger than 17% of them (0.18 ac against a typical 0.32 ac) and it is newer than 40% of them (1987 against a typical 1991). Measured against all of Suffolk County, it is worth more than 4% 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 91 Riverside Ave, Flanders, NY?

The 2020 property tax bill for 91 Riverside Ave, Flanders, NY was $3,145. The county assessed it at $190,200.

Closest homes

More homes in Flanders 11901

Assigned schools

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