1840 Union St
Niskayuna, NY 12309
4 bd 2 ba 2,043 sqft Built 1938 Lot 13,939 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 | $190,700 | $44,300 | $235,000 | $10,617 |
| 2024 | $190,700 | $44,300 | $235,000 | $10,629 |
| 2023 | $190,700 | $44,300 | $235,000 | $10,597 |
| 2022 | $190,700 | $44,300 | $235,000 | $10,802 |
| 2021 | $190,700 | $44,300 | $235,000 | $8,538 |
| 2020 | $190,700 | $44,300 | $235,000 | $8,230 |
| 2018 | $115,700 | $44,300 | $160,000 | $5,657 |
| 2016 | $115,700 | $44,300 | $160,000 | $5,657 |
| 2015 | $115,700 | $44,300 | $160,000 | $5,454 |
| 2014 | $115,700 | $44,300 | $160,000 | $5,381 |
| 2013 | $115,700 | $44,300 | $160,000 | $6,394 |
| 2012 | $205,700 | $44,300 | $250,000 | $8,199 |
| 2011 | $205,700 | $44,300 | $250,000 | $7,621 |
| 2010 | $205,700 | $44,300 | $250,000 | $3,058 |
Property facts
Year built
1938
Property type
single_family
Stories
—
Beds
4
Baths
2
Living area
2,043 sqft
Lot size
13,939 sqft
ZIP code
12309
City
Niskayuna
Street
Union St
Coordinates
42.79876, -73.89368
Comparable properties nearby
Frequently asked questions
When did 1840 Union St last sell?
No public-record sale is on file for 1840 Union St.
What is the current tax assessment for 1840 Union St?
The most recent total assessment for 1840 Union St (year 2025) is $235,000 with $10,617 in property tax.
When was 1840 Union St built?
1840 Union St was built in 1938.
How does 1840 Union St compare to others on Union St?
We track 8 other properties on Union St. Browse the list under "Other properties on Union St" to compare beds, baths, and sale history.
What are the property facts for 1840 Union St?
1840 Union St is a 4 bed, 2 bath, 2,043 sqft, 13,939 sqft lot single_family.
Is 1840 Union St a flip candidate?
No — 1840 Union St does not appear in our flips dataset.
Is 1840 Union St a tax-appeal candidate?
No — 1840 Union St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+0.9%
Implied 1-yr
+3.8%
2026 Q3
$428.1K
2026 Q4
$431.9K
ZIP 12309 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St