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Single Family ResidenceResidential
$1,120,612$514 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $285,000 on Nov 3, 1999

891 ROUND SWAMP RD

OLD BETHPAGE, NY 11804
3
Baths
2,179 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1988
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.1M
$1M low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$285,000 · Nov 3, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,039 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$618 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$288
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$330
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$609
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$618,000

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.Raised Ranch
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.27
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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.Highway
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 240 ft²Patio · 240 ft²

Transaction History(2)

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
Old Bethpage Elementary SchoolB+
Elementary · Grades KG–4 · 0.7 mi
M
Howard B. Mattlin Middle SchoolA-
Middle · Grades 5–8 · 1.5 mi
H
Plainview-Old Bethpage John F. Kennedy High SchoolA
High · Grades 9–12 · 1.6 mi

District: Plainview-Old Bethpage Central School District

Neighborhood · ZIP 11804These 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.117
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.111
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.89

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.7%
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.5,721
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,911 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$177,890
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$167,799
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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

891 Round Swamp 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 more than 77% of homes in Nassau County
  • Costs less per square foot than 80% of homes in Old Bethpage
  • Bigger than 77% of homes in Old Bethpage
  • Has a bigger lot than 88% of homes in Nassau County
  • Newer than 95% of homes in Old Bethpage 11804

What homes are worth in Old Bethpage 11804

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

This home
$724K$1.7M

This home is worth more than 68% of homes in Old Bethpage 11804.

How it measures up in Old Bethpage 11804

The dot is this home. The mark in the middle is the typical home in Old Bethpage 11804.

Estimated value$1,120,612
CheaperTypical $1,008,708Pricier

Pricier than 68% of homes nearby

Price per ft²$514
CheaperTypical $561Pricier

Pricier than 20% of homes nearby

Living area2,179 ft²
SmallerTypical 1,841 ft²Bigger

Bigger than 70% of homes nearby

Lot size0.26 ac
SmallerTypical 0.23 acBigger

Bigger than 87% of homes nearby

Year built1988
OlderTypical 1958Newer

Newer than 95% of homes nearby

How 891 Round Swamp Rd ranks against every home in each area.
MeasureThis homeOld BethpageOld Bethpage 11804Nassau County
Estimated valuepricier than$1,120,61268% of homes68% of homes77% of homes
Price per ft²pricier than$51420% of homes20% of homes50% of homes
Living areabigger than2,179 ft²77% of homes70% of homes72% of homes
Lot sizebigger than0.26 ac87% of homes87% of homes88% of homes
Year builtnewer than198855% of homes95% of homes92% of homes

About 891 Round Swamp Rd

How much is 891 Round Swamp Rd, Old Bethpage, NY worth?

The TopHap Estimate for 891 Round Swamp Rd, Old Bethpage, NY is $1,120,612 as of Aug 30, 2026. The likely range is $1,041,652 to $1,199,572. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 891 Round Swamp Rd, Old Bethpage, NY last sell?

891 Round Swamp Rd, Old Bethpage, NY last sold on Nov 3, 1999 for $285,000, according to the county's recorded deed.

How big is 891 Round Swamp Rd, Old Bethpage, NY?

891 Round Swamp Rd, Old Bethpage, NY has 3 bathrooms, 2,179 square feet of living space and a 0.27-acre lot.

When was 891 Round Swamp Rd, Old Bethpage, NY built?

891 Round Swamp Rd, Old Bethpage, NY was built in 1988, making it 38 years old. It is a raised ranch home. The building has 2 stories.

What schools serve 891 Round Swamp Rd, Old Bethpage, NY?

891 Round Swamp Rd, Old Bethpage, NY is assigned to Old Bethpage Elementary School (elementary), rated B+; Howard B. Mattlin Middle School (middle), rated A-; Plainview-Old Bethpage John F. Kennedy High School (high), rated A. All sit in Plainview-Old Bethpage Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 891 Round Swamp Rd, Old Bethpage, NY compare to other homes in Old Bethpage 11804?

Among the 1,533 homes in Old Bethpage 11804, it is worth more than 68% of them ($1,120,612 against a typical $1,008,708), its price per square foot is higher than 20% of them ($514 against a typical $561), it is bigger than 70% of them (2,179 ft² against a typical 1,841 ft²), its lot is bigger than 87% of them (0.26 ac against a typical 0.23 ac) and it is newer than 95% of them (1988 against a typical 1958). Measured against all of Nassau County, it is worth more than 77% 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 891 Round Swamp Rd, Old Bethpage, NY?

The 2025 property tax bill for 891 Round Swamp Rd, Old Bethpage, NY was $14,039. The county assessed it at $618.

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