12 Union St
Sag Harbor, NY 11963
4 bd 3 ba 7,476 sqft Built 1991 Lot 32,670 sqft single_family
Most recent sale
$705,000
Apr 23, 2003
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Jan 6, 2026 | Price changed | $6,500,000 | CorcoranGroup |
| Dec 15, 2025 | Relisted | $7,300,000 | CorcoranGroup |
| Jul 7, 2025 | Price changed | $7,300,000 | CorcoranGroup |
| Jan 14, 2025 | Price changed | $7,950,000 | CorcoranGroup |
| Nov 24, 2024 | Listed | $8,950,000 | CorcoranGroup |
| Feb 15, 2023 | Sold | $7,300,000 | Public Record |
| Dec 6, 2022 | Sold | $7,300,000 | MyStateMLS |
| Aug 22, 2022 | Price changed | $7,995,000 | MLS #11060435 |
| Jul 10, 2022 | Listed | $8,750,000 | MLS #11060435 |
| Jan 27, 2022 | Price changed for rent | $51,000 | CorcoranGroup |
| Nov 2, 2021 | Listed for rent | $8,500 | CorcoranGroup |
| Oct 9, 2021 | Listed for rent | $8,500 | CorcoranGroup |
| Jun 8, 2021 | Listed | $7,500,000 | MLS #H358851 |
| Apr 23, 2003 | Sold | $705,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $464,100 | $1,340,400 | $1,804,500 | $2,506 |
| 2024 | $464,100 | $1,340,400 | $1,804,500 | $5,012 |
| 2023 | $464,100 | $1,340,400 | $1,804,500 | $14,895 |
| 2022 | $411,200 | $1,340,400 | $1,751,600 | $9,681 |
| 2021 | $411,200 | $1,340,400 | $1,751,600 | $14,185 |
| 2020 | $411,200 | $1,340,400 | $1,751,600 | $9,387 |
| 2019 | $411,200 | $1,340,400 | $1,751,600 | $13,960 |
| 2018 | $376,700 | $1,072,300 | $1,449,000 | $8,325 |
| 2017 | $376,700 | $1,072,300 | $1,449,000 | $8,325 |
| 2016 | $376,700 | $1,072,300 | $1,449,000 | $8,658 |
| 2015 | $376,700 | $1,072,300 | $1,449,000 | $8,873 |
| 2014 | $376,700 | $1,072,300 | $1,449,000 | $9,167 |
| 2013 | $376,700 | $1,072,300 | $1,449,000 | $8,662 |
| 2012 | $376,700 | $1,072,300 | $1,449,000 | $8,335 |
| 2011 | $376,700 | $1,072,300 | $1,449,000 | $8,012 |
| 2010 | $376,700 | $1,072,300 | $1,449,000 | $7,261 |
| 2009 | $376,700 | $1,072,300 | $1,449,000 | $6,831 |
| 2008 | $376,700 | $1,072,300 | $1,449,000 | $6,988 |
| 2007 | $376,700 | $1,072,300 | $1,449,000 | $7,010 |
| 2006 | $376,700 | $1,787,200 | $2,163,900 | $7,010 |
Property facts
Year built
1991
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
7,476 sqft
Lot size
32,670 sqft
ZIP code
11963
City
Sag Harbor
Street
Union St
Coordinates
40.99731, -72.29560
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 12 Union St last sell?
12 Union St most recently sold on Apr 23, 2003 for $705,000.
What is the current tax assessment for 12 Union St?
The most recent total assessment for 12 Union St (year 2025) is $1,804,500 with $2,506 in property tax.
How does 12 Union St's assessment compare to its last sale price?
The current assessment is 156.0% above the last sale price of $705,000.
When was 12 Union St built?
12 Union St was built in 1991.
How does 12 Union St compare to others on Union St?
We track 4 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 12 Union St?
12 Union St is a 4 bed, 3 bath, 7,476 sqft, 32,670 sqft lot single_family.
Is 12 Union St a flip candidate?
No — 12 Union St does not appear in our flips dataset.
Is 12 Union St a tax-appeal candidate?
No — 12 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
+1.2%
Implied 1-yr
+4.9%
2026 Q2
$3.7M
2026 Q3
$3.74M
ZIP 11963 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St