Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$603,083
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 Sep 24, 2026
Last sold for $412,000 on Apr 11, 2006

21 1ST PL

CENTRAL ISLIP, NY 11722
0
Baths
0.32 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$603K
$547K low$659K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$412,000 · Apr 11, 2006

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$33,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$25,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$464,789

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.71 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.0.32
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Ralph Reed SchoolD
Middle · Grades 7–8 · 0.5 mi
E
Andrew T Morrow SchoolD
Elementary · Grades KG–6 · 0.9 mi
H
Central Islip Senior High SchoolC-
High · Grades 9–12 · 1.1 mi

District: Central Islip Union Free School District

Neighborhood · ZIP 11722These 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.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.67

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
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.37,500
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,450 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$98,750
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,293
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%

Owner Tools

Do you own this home?
Claim this home

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 1st Pl 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 74% of homes in Central Islip 11722
  • Has a bigger lot than 77% of homes in Central Islip 11722

What homes are worth in Central Islip 11722

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

This home
$417K$757K

This home is worth more than 74% of homes in Central Islip 11722.

How it measures up in Central Islip 11722

The dot is this home. The mark in the middle is the typical home in Central Islip 11722.

Estimated value$603,083
CheaperTypical $549,990Pricier

Pricier than 74% of homes nearby

Lot size0.32 ac
SmallerTypical 0.18 acBigger

Bigger than 77% of homes nearby

How 21 1st Pl ranks against every home in each area.
MeasureThis homeCentral Islip 11722Suffolk County
Estimated valuepricier than$603,08374% of homes29% of homes
Lot sizebigger than0.32 ac77% of homes55% of homes

About 21 1st Pl

How much is 21 1st Pl, Central Islip, NY worth?

The TopHap Estimate for 21 1st Pl, Central Islip, NY is $603,083 as of Sep 24, 2026. The likely range is $547,160 to $659,006. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 1st Pl, Central Islip, NY last sell?

21 1st Pl, Central Islip, NY last sold on Apr 11, 2006 for $412,000, according to the county's recorded deed.

What schools serve 21 1st Pl, Central Islip, NY?

21 1st Pl, Central Islip, NY is assigned to Ralph Reed School (middle), rated D; Andrew T Morrow School (elementary), rated D; Central Islip Senior High School (high), rated C-. All sit in Central Islip Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 1st Pl, Central Islip, NY compare to other homes in Central Islip 11722?

Among the 8,245 homes in Central Islip 11722, it is worth more than 74% of them ($603,083 against a typical $549,990) and its lot is bigger than 77% of them (0.32 ac against a typical 0.18 ac). Measured against all of Suffolk County, it is worth more than 29% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on 1st Pl

Closest homes

More homes in Central Islip 11722

Assigned schools

Explore the area

See this home in context

Open 21 1st Pl on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map