230 Union Ave
Islip, NY 11751
— ba 407 sqft Built 1900 Lot 2,178 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 | $8,800 | $4,000 | $12,800 | $4,848 |
| 2024 | $8,800 | $4,000 | $12,800 | $4,618 |
| 2023 | $8,800 | $4,000 | $12,800 | $4,618 |
| 2022 | $8,800 | $4,000 | $12,800 | $4,643 |
| 2021 | $8,800 | $4,000 | $12,800 | $4,475 |
| 2020 | $8,800 | $4,000 | $12,800 | $4,357 |
| 2017 | $8,800 | $4,000 | $12,800 | $4,214 |
| 2016 | $8,800 | $4,000 | $12,800 | $4,184 |
| 2015 | $8,800 | $4,000 | $12,800 | $4,182 |
| 2014 | $8,800 | $4,000 | $12,800 | $4,122 |
| 2013 | $8,800 | $4,000 | $12,800 | $4,047 |
| 2012 | $8,800 | $4,000 | $12,800 | $3,915 |
| 2011 | $8,800 | $4,000 | $12,800 | $2,722 |
| 2010 | $8,800 | $4,000 | $12,800 | $2,600 |
| 2008 | $6,300 | $4,000 | $10,300 | $1,918 |
Property facts
Year built
1900
Property type
single_family
Stories
—
Beds
—
Baths
—
Living area
407 sqft
Lot size
2,178 sqft
ZIP code
11751
City
Islip
Street
Union Ave
Coordinates
40.72170, -73.21259
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 230 Union Ave last sell?
No public-record sale is on file for 230 Union Ave.
What is the current tax assessment for 230 Union Ave?
The most recent total assessment for 230 Union Ave (year 2025) is $12,800 with $4,848 in property tax.
When was 230 Union Ave built?
230 Union Ave was built in 1900.
How does 230 Union Ave compare to others on Union Ave?
We track 8 other properties on Union Ave. Browse the list under "Other properties on Union Ave" to compare beds, baths, and sale history.
What are the property facts for 230 Union Ave?
230 Union Ave is a — bath, 407 sqft, 2,178 sqft lot single_family.
Is 230 Union Ave a flip candidate?
No — 230 Union Ave does not appear in our flips dataset.
Is 230 Union Ave a tax-appeal candidate?
No — 230 Union 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
-13.7%
Implied 1-yr
-54.6%
2026 Q1
$212.6K
2026 Q2
$212.6K
ZIP 11751 — Median Price History + Forecast
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