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Duplex (2 Units, Any Combination)Residential
Last sold for $418,425 on Feb 2, 2017

15 ROTTKAMP ST

VALLEY STREAM, NY 11580
3
Baths
1,720 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1949
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$418,425 · Feb 2, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,231 (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.$473 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$198
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$275
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$473
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$473,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.12
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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.Porch · 196 ft²

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

Neighborhood · ZIP 11580These 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.63
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 100.94

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.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
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.43,040
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.11,017 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$129,895
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,272
Average tempThe average temperature here across a full year.54°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

15 Rottkamp St 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.

  • Bigger than 79% of homes in North Valley Stream
  • Has a smaller lot than 84% of homes in Nassau County

How it measures up in Valley Stream 11580

The dot is this home. The mark in the middle is the typical home in Valley Stream 11580.

Living area1,720 ft²
SmallerTypical 1,408 ft²Bigger

Bigger than 75% of homes nearby

Lot size0.11 ac
SmallerTypical 0.12 acBigger

Bigger than 36% of homes nearby

Year built1949
OlderTypical 1949Newer

Newer than 53% of homes nearby

How 15 Rottkamp St ranks against every home in each area.
MeasureThis homeNorth Valley StreamValley Stream 11580Nassau County
Living areabigger than1,720 ft²79% of homes75% of homes49% of homes
Lot sizebigger than0.11 ac22% of homes36% of homes16% of homes
Year builtnewer than194953% of homes53% of homes37% of homes

About 15 Rottkamp St

When did 15 Rottkamp St, Valley Stream, NY last sell?

15 Rottkamp St, Valley Stream, NY last sold on Feb 2, 2017 for $418,425, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 15 Rottkamp St, Valley Stream, NY?

15 Rottkamp St, Valley Stream, NY has 3 bathrooms, 1,720 square feet of living space and a 0.12-acre lot.

When was 15 Rottkamp St, Valley Stream, NY built?

15 Rottkamp St, Valley Stream, NY was built in 1949, making it 77 years old. It is a colonial home. The building has 2 stories.

How does 15 Rottkamp St, Valley Stream, NY compare to other homes in Valley Stream 11580?

Among the 10,974 homes in Valley Stream 11580, it is bigger than 75% of them (1,720 ft² against a typical 1,408 ft²), its lot is bigger than 36% of them (0.11 ac against a typical 0.12 ac) and it is newer than 53% of them (1949 against a typical 1949). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 15 Rottkamp St, Valley Stream, NY?

The 2025 property tax bill for 15 Rottkamp St, Valley Stream, NY was $12,231. The county assessed it at $473.

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