21 Fern Ave
East Islip, NY 11730
4 bd 2 ba Built 1958 Lot 12,197 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 | $32,500 | $8,100 | $40,600 | $12,418 |
| 2024 | $32,500 | $8,100 | $40,600 | $12,017 |
| 2023 | $32,500 | $8,100 | $40,600 | $12,017 |
| 2022 | $32,500 | $8,100 | $40,600 | $12,120 |
| 2021 | $32,500 | $8,100 | $40,600 | $11,813 |
| 2020 | $32,500 | $8,100 | $40,600 | $11,722 |
| 2018 | $32,500 | $8,100 | $40,600 | $11,683 |
| 2017 | $32,500 | $8,100 | $40,600 | $11,680 |
| 2016 | $32,500 | $8,100 | $40,600 | $10,524 |
| 2015 | $32,500 | $8,100 | $40,600 | $10,754 |
| 2014 | $32,500 | $8,100 | $40,600 | $9,680 |
| 2013 | $32,500 | $8,100 | $40,600 | $9,552 |
| 2012 | $32,500 | $8,100 | $40,600 | $9,166 |
| 2011 | $32,500 | $8,100 | $40,600 | $8,748 |
| 2010 | $32,500 | $8,100 | $40,600 | $8,245 |
| 2008 | $32,500 | $8,100 | $40,600 | $8,139 |
Property facts
Year built
1958
Property type
single_family
Stories
—
Beds
4
Baths
2
Living area
—
Lot size
12,197 sqft
ZIP code
11730
City
East Islip
Street
Fern Ave
Coordinates
40.73483, -73.18159
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Fern Ave last sell?
No public-record sale is on file for 21 Fern Ave.
What is the current tax assessment for 21 Fern Ave?
The most recent total assessment for 21 Fern Ave (year 2025) is $40,600 with $12,418 in property tax.
When was 21 Fern Ave built?
21 Fern Ave was built in 1958.
How does 21 Fern Ave compare to others on Fern Ave?
We track 6 other properties on Fern Ave. Browse the list under "Other properties on Fern Ave" to compare beds, baths, and sale history.
What are the property facts for 21 Fern Ave?
21 Fern Ave is a 4 bed, 2 bath, 12,197 sqft lot single_family.
Is 21 Fern Ave a flip candidate?
No — 21 Fern Ave does not appear in our flips dataset.
Is 21 Fern Ave a tax-appeal candidate?
No — 21 Fern Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+2.1%
Implied 1-yr
+8.4%
2026 Q3
$806.5K
2026 Q4
$821.5K
ZIP 11730 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Fern Ave