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Single Family ResidenceResidential
$526,754$567 / 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 90How 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 ROSEMARY LN

CENTEREACH, NY 11720
2
Beds
1
Baths
929 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1945
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$527K
$476K low$578K 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.$526,754
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$421,403

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,818 (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.$1,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$150
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,750
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$395,833

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.14 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.28
HeatingThe type of heating system in the home.Radiant
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.Waterfront

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Jericho Elementary SchoolD+
Elementary · Grades KG–9 · 0.4 mi
H
Centereach High SchoolB
High · Grades 8–12 · 1.8 mi
M
Dawnwood Middle SchoolC
Middle · Grades 6–8 · 1.9 mi

District: Middle Country Central School District

Neighborhood · ZIP 11720These 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.55
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.63

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.9%
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.28,643
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,486 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,063
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$145,246
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 Rosemary Ln 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 less than 91% of homes in Centereach 11720
  • Costs more per square foot than 93% of homes in Selden
  • Smaller than 94% of homes in Centereach 11720
  • Has a bigger lot than 68% of homes in Selden
  • Older than 95% of homes in Centereach 11720

What homes are worth in Centereach 11720

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

This home
$437K$1M

This home is worth more than 9% of homes in Centereach 11720.

How it measures up in Centereach 11720

The dot is this home. The mark in the middle is the typical home in Centereach 11720.

Estimated value$526,754
CheaperTypical $634,150Pricier

Pricier than 9% of homes nearby

Price per ft²$567
CheaperTypical $387Pricier

Pricier than 93% of homes nearby

Living area929 ft²
SmallerTypical 1,655 ft²Bigger

Bigger than 6% of homes nearby

Lot size0.28 ac
SmallerTypical 0.31 acBigger

Bigger than 45% of homes nearby

Year built1945
OlderTypical 1965Newer

Newer than 5% of homes nearby

How 21 Rosemary Ln ranks against every home in each area.
MeasureThis homeSeldenCentereach 11720Suffolk County
Estimated valuepricier than$526,75417% of homes9% of homes14% of homes
Price per ft²pricier than$56793% of homes93% of homes81% of homes
Living areabigger than929 ft²8% of homes6% of homes7% of homes
Lot sizebigger than0.28 ac68% of homes45% of homes52% of homes
Year builtnewer than194513% of homes5% of homes10% of homes

About 21 Rosemary Ln

How much is 21 Rosemary Ln, Centereach, NY worth?

The TopHap Estimate for 21 Rosemary Ln, Centereach, NY is $526,754 as of Jul 14, 2026. The likely range is $475,674 to $577,834. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Rosemary Ln, Centereach, NY last sell?

21 Rosemary Ln, Centereach, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Rosemary Ln, Centereach, NY?

21 Rosemary Ln, Centereach, NY has 2 bedrooms, 1 bathrooms, 929 square feet of living space and a 0.28-acre lot.

When was 21 Rosemary Ln, Centereach, NY built?

21 Rosemary Ln, Centereach, NY was built in 1945, making it 81 years old. The building has 1 story.

What schools serve 21 Rosemary Ln, Centereach, NY?

21 Rosemary Ln, Centereach, NY is assigned to Jericho Elementary School (elementary), rated D+; Centereach High School (high), rated B; Dawnwood Middle School (middle), rated C. All sit in Middle Country Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rosemary Ln, Centereach, NY compare to other homes in Centereach 11720?

Among the 8,535 homes in Centereach 11720, it is worth more than 9% of them ($526,754 against a typical $634,150), its price per square foot is higher than 93% of them ($567 against a typical $387), it is bigger than 6% of them (929 ft² against a typical 1,655 ft²), its lot is bigger than 45% of them (0.28 ac against a typical 0.31 ac) and it is newer than 5% of them (1945 against a typical 1965). Measured against all of Suffolk County, it is worth more than 14% 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 Rosemary Ln, Centereach, NY?

The 2024 property tax bill for 21 Rosemary Ln, Centereach, NY was $5,818. The county assessed it at $1,900.

Closest homes

More homes in Centereach 11720

Assigned schools

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