691 Union Ave
Holtsville, NY 11742
— ba 1,168 sqft Built 1985 Lot 5,227 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 | $2,400 | $125 | $2,525 | $9,786 |
| 2024 | $2,400 | $125 | $2,525 | $9,342 |
| 2023 | $2,400 | $125 | $2,525 | $9,164 |
| 2022 | $2,400 | $125 | $2,525 | $8,853 |
| 2021 | $2,400 | $125 | $2,525 | $8,621 |
| 2020 | $2,400 | $125 | $2,525 | $8,633 |
| 2018 | $2,400 | $125 | $2,525 | $8,372 |
| 2017 | $2,400 | $125 | $2,525 | $7,147 |
| 2016 | $2,400 | $125 | $2,525 | $7,131 |
| 2015 | $2,400 | $125 | $2,525 | $6,909 |
| 2014 | $2,400 | $125 | $2,525 | $6,823 |
| 2013 | $2,400 | $125 | $2,525 | $6,615 |
| 2012 | $2,400 | $125 | $2,525 | $6,596 |
| 2011 | $2,400 | $125 | $2,525 | $6,297 |
| 2010 | $2,400 | $125 | $2,525 | $6,135 |
| 2008 | $2,400 | $125 | $2,525 | $5,925 |
| 2007 | $2,400 | $125 | $2,525 | $5,832 |
| 2006 | $2,400 | $125 | $2,525 | $5,682 |
Property facts
Year built
1985
Property type
single_family
Stories
—
Beds
—
Baths
—
Living area
1,168 sqft
Lot size
5,227 sqft
ZIP code
11742
City
Holtsville
Street
Union Ave
Coordinates
40.81536, -73.04905
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 691 Union Ave last sell?
No public-record sale is on file for 691 Union Ave.
What is the current tax assessment for 691 Union Ave?
The most recent total assessment for 691 Union Ave (year 2025) is $2,525 with $9,786 in property tax.
When was 691 Union Ave built?
691 Union Ave was built in 1985.
How does 691 Union Ave compare to others on Union Ave?
We track 3 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 691 Union Ave?
691 Union Ave is a — bath, 1,168 sqft, 5,227 sqft lot single_family.
Is 691 Union Ave a flip candidate?
No — 691 Union Ave does not appear in our flips dataset.
Is 691 Union Ave a tax-appeal candidate?
No — 691 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
+0.4%
Implied 1-yr
+1.5%
2026 Q2
$540.9K
2026 Q3
$542.9K
ZIP 11742 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union Ave