21 Union St
Oneonta, NY 13820
4 bd 3 ba 1,818 sqft Built 1929 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 | $151,600 | $13,400 | $165,000 | $6,405 |
| 2024 | $151,600 | $13,400 | $165,000 | $5,937 |
| 2023 | $151,600 | $13,400 | $165,000 | $5,758 |
| 2022 | $151,600 | $13,400 | $165,000 | $5,625 |
| 2021 | $151,600 | $13,400 | $165,000 | $6,209 |
| 2020 | $151,600 | $13,400 | $165,000 | $5,620 |
| 2017 | $151,600 | $13,400 | $165,000 | $5,299 |
| 2016 | $151,600 | $13,400 | $165,000 | $4,783 |
| 2015 | $151,600 | $13,400 | $165,000 | $4,310 |
| 2014 | $93,000 | $6,000 | $99,000 | $4,153 |
| 2013 | $93,000 | $6,000 | $99,000 | $2,007 |
| 2012 | $93,000 | $6,000 | $99,000 | $1,971 |
| 2011 | $93,000 | $6,000 | $99,000 | $1,916 |
| 2010 | $93,000 | $6,000 | $99,000 | $3,891 |
Property facts
Year built
1929
Property type
single_family
Stories
—
Beds
4
Baths
3
Living area
1,818 sqft
Lot size
5,227 sqft
ZIP code
13820
City
Oneonta
Street
Union St
Coordinates
42.46295, -75.05688
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Union St last sell?
No public-record sale is on file for 21 Union St.
What is the current tax assessment for 21 Union St?
The most recent total assessment for 21 Union St (year 2025) is $165,000 with $6,405 in property tax.
When was 21 Union St built?
21 Union St was built in 1929.
How does 21 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 21 Union St?
21 Union St is a 4 bed, 3 bath, 1,818 sqft, 5,227 sqft lot single_family.
Is 21 Union St a flip candidate?
No — 21 Union St does not appear in our flips dataset.
Is 21 Union St a tax-appeal candidate?
No — 21 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
-1.1%
Implied 1-yr
-4.4%
2026 Q3
$257.4K
2026 Q4
$254.3K
ZIP 13820 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St