21 Halley Ln
Central Islip, NY 11722
4 bd 2 ba Built 1950 Lot 10,019 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $19,100 | $6,600 | $25,700 | $8,649 |
| 2024 | $19,100 | $6,600 | $25,700 | $6,761 |
| 2023 | $17,600 | $6,600 | $24,200 | $6,761 |
| 2022 | $17,600 | $6,600 | $24,200 | $6,675 |
| 2021 | $17,600 | $6,600 | $24,200 | $6,459 |
| 2020 | $17,600 | $6,600 | $24,200 | $6,390 |
| 2017 | $17,600 | $6,600 | $24,200 | $6,026 |
| 2016 | $17,600 | $6,600 | $24,200 | $5,976 |
| 2015 | $25,600 | $6,600 | $32,200 | $8,219 |
| 2014 | $25,600 | $6,600 | $32,200 | $9,557 |
| 2013 | $25,600 | $6,600 | $32,200 | $8,104 |
| 2012 | $25,600 | $6,600 | $32,200 | $8,001 |
| 2011 | $25,600 | $6,600 | $32,200 | $7,718 |
| 2010 | $25,600 | $6,600 | $32,200 | $7,438 |
| 2008 | $25,600 | $6,600 | $32,200 | $6,860 |
Property facts
Year built
1950
Property type
single_family
Stories
2
Beds
4
Baths
2
Living area
—
Lot size
10,019 sqft
ZIP code
11722
City
Central Islip
Street
Halley Ln
Coordinates
40.79686, -73.20335
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Halley Ln last sell?
No public-record sale is on file for 21 Halley Ln.
What is the current tax assessment for 21 Halley Ln?
The most recent total assessment for 21 Halley Ln (year 2025) is $25,700 with $8,649 in property tax.
When was 21 Halley Ln built?
21 Halley Ln was built in 1950.
How does 21 Halley Ln compare to others on Halley Ln?
We track 8 other properties on Halley Ln. Browse the list under "Other properties on Halley Ln" to compare beds, baths, and sale history.
What are the property facts for 21 Halley Ln?
21 Halley Ln is a 4 bed, 2 bath, 10,019 sqft lot single_family.
Is 21 Halley Ln a flip candidate?
No — 21 Halley Ln does not appear in our flips dataset.
Is 21 Halley Ln a tax-appeal candidate?
No — 21 Halley Ln is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-2.9%
Implied 1-yr
-11.7%
2026 Q1
$467.5K
2026 Q2
$450.6K
ZIP 11722 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Halley Ln