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Single Family ResidenceResidential
$814,777$335 / 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 91How 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

21 ROSANNE CT

NESCONSET, NY 11767
4
Beds
2.5
Baths
2,430 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$815K
$740K low$889K high
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.$814,777
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$651,822

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,496 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$6,040 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,740
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$755,000

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
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.24
HeatingThe type of heating system in the home.Hot Water
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.Suburban

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
Wenonah Elementary SchoolB-
Elementary · Grades KG–5 · 0.5 mi
H
Sachem High School NorthA
High · Grades 9–12 · 1.7 mi
M
Samoset Middle SchoolC+
Middle · Grades 6–8 · 1.8 mi

District: Sachem Central School District

Neighborhood · ZIP 11767These 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.67
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.14,528
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,469 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$130,103
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$161,310
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

21 Rosanne Ct 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 94% of homes in Lake Ronkonkoma
  • Costs less per square foot than 86% of homes in Nesconset 11767
  • Bigger than 89% of homes in Lake Ronkonkoma
  • Has a smaller lot than 72% of homes in Nesconset 11767
  • Newer than 65% of homes in Lake Ronkonkoma

What homes are worth in Nesconset 11767

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

This home
$467K$1.2M

This home is worth more than 67% of homes in Nesconset 11767.

How it measures up in Nesconset 11767

The dot is this home. The mark in the middle is the typical home in Nesconset 11767.

Estimated value$814,777
CheaperTypical $760,073Pricier

Pricier than 67% of homes nearby

Price per ft²$335
CheaperTypical $398Pricier

Pricier than 14% of homes nearby

Living area2,430 ft²
SmallerTypical 2,008 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.24 ac
SmallerTypical 0.31 acBigger

Bigger than 28% of homes nearby

Year built1970
OlderTypical 1971Newer

Newer than 47% of homes nearby

How 21 Rosanne Ct ranks against every home in each area.
MeasureThis homeLake RonkonkomaNesconset 11767Suffolk County
Estimated valuepricier than$814,77794% of homes67% of homes67% of homes
Price per ft²pricier than$33526% of homes14% of homes21% of homes
Living areabigger than2,430 ft²89% of homes77% of homes82% of homes
Lot sizebigger than0.24 ac54% of homes28% of homes38% of homes
Year builtnewer than197065% of homes47% of homes51% of homes

About 21 Rosanne Ct

How much is 21 Rosanne Ct, Nesconset, NY worth?

The TopHap Estimate for 21 Rosanne Ct, Nesconset, NY is $814,777 as of Jul 14, 2026. The likely range is $740,314 to $889,240. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Rosanne Ct, Nesconset, NY last sell?

21 Rosanne Ct, Nesconset, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Rosanne Ct, Nesconset, NY?

21 Rosanne Ct, Nesconset, NY has 4 bedrooms, 2.5 bathrooms, 2,430 square feet of living space and a 0.24-acre lot.

When was 21 Rosanne Ct, Nesconset, NY built?

21 Rosanne Ct, Nesconset, NY was built in 1970, making it 56 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Rosanne Ct, Nesconset, NY?

21 Rosanne Ct, Nesconset, NY is assigned to Wenonah Elementary School (elementary), rated B-; Sachem High School North (high), rated A; Samoset Middle School (middle), rated C+. All sit in Sachem Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rosanne Ct, Nesconset, NY compare to other homes in Nesconset 11767?

Among the 4,585 homes in Nesconset 11767, it is worth more than 67% of them ($814,777 against a typical $760,073), its price per square foot is higher than 14% of them ($335 against a typical $398), it is bigger than 77% of them (2,430 ft² against a typical 2,008 ft²), its lot is bigger than 28% of them (0.24 ac against a typical 0.31 ac) and it is newer than 47% of them (1970 against a typical 1971). Measured against all of Suffolk County, it is worth more than 67% 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 Rosanne Ct, Nesconset, NY?

The 2024 property tax bill for 21 Rosanne Ct, Nesconset, NY was $4,496. The county assessed it at $6,040.

Closest homes

More homes in Nesconset 11767

Assigned schools

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