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Single Family ResidenceResidential
$1,656,610$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 Aug 30, 2026
Last sold for $962,500 on Mar 21, 2022

900 ROUND SWAMP RD

OLD BETHPAGE, NY 11804
2.5
Baths
3,075 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.
0.61 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.7M
$1.6M low$1.8M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$962,500 · Mar 21, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$20,584 (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.$694 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$417
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$277
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$693
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$694,000

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.Ranch
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.61
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.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Dead End
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 304 ft²Patio · 108 ft²Porch · 54 ft²

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.

E
Old Bethpage Elementary SchoolB+
Elementary · Grades KG–4 · 0.7 mi
M
Howard B. Mattlin Middle SchoolA-
Middle · Grades 5–8 · 1.4 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

900 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 97% of homes in Old Bethpage
  • Costs less per square foot than 67% of homes in Old Bethpage
  • Bigger than 98% of homes in Old Bethpage
  • Among the largest lots in Old Bethpage
  • Newer than 75% of homes in Nassau County

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
$718K$1.7M

This home is worth more than 97% 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$1,656,610
CheaperTypical $1,005,582Pricier

Pricier than 97% of homes nearby

Price per ft²$539
CheaperTypical $563Pricier

Pricier than 33% of homes nearby

Living area3,075 ft²
SmallerTypical 1,854 ft²Bigger

Bigger than 96% of homes nearby

Lot size0.61 ac
SmallerTypical 0.23 acBigger

Bigger than almost all homes nearby

Year built1959
OlderTypical 1958Newer

Newer than 61% of homes nearby

How 900 Round Swamp Rd ranks against every home in each area.
MeasureThis homeOld BethpageOld Bethpage 11804Nassau County
Estimated valuepricier than$1,656,61097% of homes97% of homes90% of homes
Price per ft²pricier than$53933% of homes33% of homes58% of homes
Living areabigger than3,075 ft²98% of homes96% of homes91% of homes
Lot sizebigger than0.61 acalmost all homesalmost all homes96% of homes
Year builtnewer than195935% of homes61% of homes75% of homes

About 900 Round Swamp Rd

How much is 900 Round Swamp Rd, Old Bethpage, NY worth?

The TopHap Estimate for 900 Round Swamp Rd, Old Bethpage, NY is $1,656,610 as of Aug 30, 2026. The likely range is $1,558,011 to $1,755,208. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 900 Round Swamp Rd, Old Bethpage, NY last sell?

900 Round Swamp Rd, Old Bethpage, NY last sold on Mar 21, 2022 for $962,500, according to the county's recorded deed.

How big is 900 Round Swamp Rd, Old Bethpage, NY?

900 Round Swamp Rd, Old Bethpage, NY has 2.5 bathrooms, 3,075 square feet of living space and a 0.61-acre lot.

When was 900 Round Swamp Rd, Old Bethpage, NY built?

900 Round Swamp Rd, Old Bethpage, NY was built in 1959, making it 67 years old. It is a ranch home. The building has 1 story.

What schools serve 900 Round Swamp Rd, Old Bethpage, NY?

900 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 900 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 97% of them ($1,656,610 against a typical $1,005,582), its price per square foot is higher than 33% of them ($539 against a typical $563), it is bigger than 96% of them (3,075 ft² against a typical 1,854 ft²), its lot is bigger than almost all of them (0.61 ac against a typical 0.23 ac) and it is newer than 61% of them (1959 against a typical 1958). Measured against all of Nassau County, it is worth more than 90% 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 900 Round Swamp Rd, Old Bethpage, NY?

The 2025 property tax bill for 900 Round Swamp Rd, Old Bethpage, NY was $20,584. The county assessed it at $694.

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