14 William Ave
East Islip, NY 11730
— ba 1,540 sqft Built 1910 Lot 10,890 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 | $19,300 | $9,900 | $29,200 | $9,307 |
| 2024 | $19,300 | $9,900 | $29,200 | $8,809 |
| 2023 | $19,300 | $9,900 | $29,200 | $8,809 |
| 2022 | $17,400 | $9,900 | $27,300 | $8,549 |
| 2021 | $17,400 | $9,900 | $27,300 | $4,157 |
| 2017 | $17,400 | $9,900 | $27,300 | $8,209 |
| 2016 | $17,400 | $9,900 | $27,300 | $8,231 |
| 2015 | $17,400 | $9,900 | $27,300 | $8,365 |
| 2014 | $17,400 | $9,900 | $27,300 | $8,397 |
| 2013 | $17,400 | $9,900 | $27,300 | $8,286 |
| 2012 | $17,400 | $9,900 | $27,300 | $7,847 |
| 2011 | $17,400 | $9,900 | $27,300 | $7,675 |
| 2010 | $17,400 | $9,900 | $27,300 | $7,302 |
| 2008 | $17,400 | $9,900 | $27,300 | $6,961 |
| 2007 | $17,400 | $9,900 | $27,300 | $6,605 |
Property facts
Year built
1910
Property type
single_family
Stories
—
Beds
—
Baths
—
Living area
1,540 sqft
Lot size
10,890 sqft
ZIP code
11730
City
East Islip
Street
William Ave
Coordinates
40.72964, -73.19437
Comparable properties nearby
Frequently asked questions
When did 14 William Ave last sell?
No public-record sale is on file for 14 William Ave.
What is the current tax assessment for 14 William Ave?
The most recent total assessment for 14 William Ave (year 2025) is $29,200 with $9,307 in property tax.
When was 14 William Ave built?
14 William Ave was built in 1910.
How does 14 William Ave compare to others on William Ave?
We track 1 other property on William Ave. Browse the list under "Other properties on William Ave" to compare beds, baths, and sale history.
What are the property facts for 14 William Ave?
14 William Ave is a — bath, 1,540 sqft, 10,890 sqft lot single_family.
Is 14 William Ave a flip candidate?
No — 14 William Ave does not appear in our flips dataset.
Is 14 William Ave a tax-appeal candidate?
No — 14 William 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 William Ave