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Single Family ResidenceResidential
$2,657,396$762 / 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 80How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jun 23, 2026
Last sold for $1,167,500 on Mar 21, 2007

21 SYCAMORE DR

ROSLYN, NY 11576
3.5
Baths
3,486 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$2.7M
$2.1M low$3.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,167,500 · Mar 21, 2007
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.$1,279,646
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$1,023,717
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.52%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$729,750
WELLS FARGO BANK · recorded Jun 24, 2009
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$648,000
FLAGSTAR BANK FSB

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$34,148 (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.$1,591 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$384
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,207
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,542
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,591,000

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.Colonial
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.21
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, Basement
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.Deck · 168 ft²Patio · 168 ft²Porch · 56 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
Roslyn Heights Elementary School
Elementary · Grades KG–11 · 1.2 mi
H
Roslyn High SchoolA
High · Grades 9–12 · 1.3 mi
M
Roslyn Middle SchoolA-
Middle · Grades 6–8 · 1.9 mi

District: Roslyn Union Free School District

Neighborhood · ZIP 11576These 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.78
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 100.104

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
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.13,502
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,896 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$189,117
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$255,113
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%

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

21 Sycamore 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 more than 97% of homes in Nassau County
  • Costs more per square foot than 95% of homes in Nassau County
  • Bigger than 94% of homes in Nassau County
  • Has a bigger lot than 79% of homes in Nassau County
  • Newer than 93% of homes in Nassau County

What homes are worth in Roslyn 11576

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

This home
$863K$4M

This home is worth more than 89% of homes in Roslyn 11576.

How it measures up in Roslyn 11576

The dot is this home. The mark in the middle is the typical home in Roslyn 11576.

Estimated value$2,657,396
CheaperTypical $1,828,644Pricier

Pricier than 89% of homes nearby

Price per ft²$762
CheaperTypical $629Pricier

Pricier than 91% of homes nearby

Living area3,486 ft²
SmallerTypical 2,798 ft²Bigger

Bigger than 73% of homes nearby

Lot size0.21 ac
SmallerTypical 0.35 acBigger

Bigger than 25% of homes nearby

Year built1999
OlderTypical 1965Newer

Newer than 89% of homes nearby

How 21 Sycamore Dr ranks against every home in each area.
MeasureThis homeRoslyn 11576Nassau County
Estimated valuepricier than$2,657,39689% of homes97% of homes
Price per ft²pricier than$76291% of homes95% of homes
Living areabigger than3,486 ft²73% of homes94% of homes
Lot sizebigger than0.21 ac25% of homes79% of homes
Year builtnewer than199989% of homes93% of homes

About 21 Sycamore Dr

How much is 21 Sycamore Dr, Roslyn, NY worth?

The TopHap Estimate for 21 Sycamore Dr, Roslyn, NY is $2,657,396 as of Jun 23, 2026. The likely range is $2,125,916 to $3,188,875. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Sycamore Dr, Roslyn, NY last sell?

21 Sycamore Dr, Roslyn, NY last sold on Mar 21, 2007 for $1,167,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Sycamore Dr, Roslyn, NY?

21 Sycamore Dr, Roslyn, NY has 3.5 bathrooms, 3,486 square feet of living space and a 0.21-acre lot.

When was 21 Sycamore Dr, Roslyn, NY built?

21 Sycamore Dr, Roslyn, NY was built in 1999, making it 27 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Sycamore Dr, Roslyn, NY?

21 Sycamore Dr, Roslyn, NY is assigned to Roslyn Heights Elementary School (elementary); Roslyn High School (high), rated A; Roslyn Middle School (middle), rated A-. All sit in Roslyn Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Sycamore Dr, Roslyn, NY compare to other homes in Roslyn 11576?

Among the 4,806 homes in Roslyn 11576, it is worth more than 89% of them ($2,657,396 against a typical $1,828,644), its price per square foot is higher than 91% of them ($762 against a typical $629), it is bigger than 73% of them (3,486 ft² against a typical 2,798 ft²), its lot is bigger than 25% of them (0.21 ac against a typical 0.35 ac) and it is newer than 89% of them (1999 against a typical 1965). Measured against all of Nassau County, it is worth more than 97% 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 21 Sycamore Dr, Roslyn, NY?

The 2025 property tax bill for 21 Sycamore Dr, Roslyn, NY was $34,148. The county assessed it at $1,591.

Closest homes

More homes in Roslyn 11576

Assigned schools

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