A rare opportunity to own an historic house with land that runs between Union and Jefferson Streets allowing for a south-facing light, room for a large garden and swimming pool is listed for sale. Included are permitted plans plans for a substantial addition on one of the largest residential parcels within this location of Sag Harbor Village. A three-quarter (.75 acre) site with mature landscaping and perimeter evergreens all makes for a securing a rare jewel in this convenient and central location and moments from the best of what Sag Harbor has to offer for one of the best lifestyle experiences on the East End.
Pending
$6,500,000
12 Union St, Sag Harbor, NY 11963
3beds
2,919sqft
Single Family Residence
Built in 1790
0.75 Acres Lot
$5,931,000 Zestimate®
$2,227/sqft
$-- HOA
What's special
South-facing lightPerimeter evergreensMature landscaping
- 8 hours |
- 32 |
- 0 |
Zillow last checked:
Listed by:
Corcoran Group 631-702-9226,
Thomas Davis - Real Estate Sales Person 631-885-5739
Source: Out East,MLS#: 390593
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 4
- Full bathrooms: 4
Cooling
- Central Air
Features
- Basement: Yes
- Has fireplace: Yes
Interior area
- Total structure area: 2,919
- Total interior livable area: 2,919 sqft
Video & virtual tour
Property
Parking
- Parking features: None
Features
- Stories: 3
- Has private pool: Yes
- Pool features: Heated
- Has spa: Yes
- Spa features: Heated
Lot
- Size: 0.75 Acres
Details
- Parcel number: 0903003000300068000
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Condition
- New construction: No
- Year built: 1790
Community & HOA
Location
- Region: Sag Harbor
Financial & listing details
- Price per square foot: $2,227/sqft
- Tax assessed value: $1,804,500
- Date on market: 7/7/2026
- Lease term: Contact For Details
Estimated market value
$5,931,000
$5.63M - $6.23M
$7,756/mo
Price history
| Date | Event | Price |
|---|---|---|
| 7/7/2026 | Pending sale | $6,500,000$2,227/sqft |
Source: Out East #390593 Report a problem | ||
| 5/19/2026 | Listing removed | $6,500,000$2,227/sqft |
Source: Out East #390593 Report a problem | ||
| 1/6/2026 | Price change | $6,500,000-11%$2,227/sqft |
Source: Out East #390593 Report a problem | ||
| 12/12/2025 | Listed for sale | $7,300,000$2,501/sqft |
Source: Out East #390593 Report a problem | ||
| 12/3/2025 | Listing removed | $7,300,000$2,501/sqft |
Source: Out East #390593 Report a problem | ||
| 8/16/2025 | Listed for sale | $7,300,000$2,501/sqft |
Source: Out East #390593 Report a problem | ||
| 2/15/2023 | Sold | $7,300,000-8.7%$2,501/sqft |
Source: Public Record Report a problem | ||
| 9/17/2022 | Pending sale | $7,995,000$2,739/sqft |
Source: Out East #367602 Report a problem | ||
| 8/22/2022 | Price change | $7,995,000-8.6%$2,739/sqft |
Source: Out East #367602 Report a problem | ||
| 7/14/2022 | Listed for sale | $8,750,000+16.7%$2,998/sqft |
Source: Out East #367602 Report a problem | ||
| 10/8/2021 | Listing removed | -- |
Source: Out East Report a problem | ||
| 8/10/2021 | Price change | $10,000-90%$3/sqft |
Source: Out East #359300 Report a problem | ||
| 8/7/2021 | Listed for rent | $100,000+1150%$34/sqft |
Source: Out East #359300 Report a problem | ||
| 8/7/2021 | Listing removed | -- |
Source:  Douglas Elliman Report a problem | ||
| 6/7/2021 | Listed for sale | $7,500,000$2,569/sqft |
Source: Douglas Elliman #358851 Report a problem | ||
| 1/8/2021 | Listing removed | -- |
Source: Out East Report a problem | ||
| 1/4/2021 | Price change | $8,000-20%$3/sqft |
Source: Out East #354293 Report a problem | ||
| 9/20/2020 | Listed for rent | $10,000-87.5%$3/sqft |
Source: Southampton #354293 Report a problem | ||
| 6/28/2019 | Listing removed | $80,000$27/sqft |
Source: Bridgehampton Report a problem | ||
| 6/26/2019 | Listed for rent | $80,000$27/sqft |
Source: Bridgehampton Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $1,804,500 |
| 2024 | -- | $1,804,500 |
| 2023 | -- | $1,804,500 |
| 2022 | -- | $1,804,500 +3% |
| 2021 | -- | $1,751,600 |
| 2020 | -- | $1,751,600 |
| 2019 | -- | $1,751,600 +20.9% |
| 2018 | -- | $1,449,000 |
| 2017 | $8,642 | $1,449,000 |
| 2016 | -- | $1,449,000 |
| 2015 | -- | $1,449,000 |
| 2014 | -- | $1,449,000 |
| 2013 | -- | $1,449,000 |
| 2012 | -- | $1,449,000 |
| 2011 | -- | $1,449,000 |
| 2007 | $6,988 -16.9% | $1,449,000 +8.8% |
| 2005 | $8,410 +50.2% | $1,331,198 +9022.8% |
| 2004 | $5,601 +8.7% | $14,592 |
| 2003 | $5,155 +10.6% | $14,592 |
| 2002 | $4,662 +5.5% | $14,592 |
| 2001 | $4,419 +6.6% | $14,592 |
| 2000 | $4,144 | $14,592 |
Find assessor info on the county website
Monthly payment
Estimated monthly payment$1,822
All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
See how much you could borrow to make a competitive offer.
Climate risks
Neighborhood: 11963
Nearby schools
GreatSchools rating
- 6/10Sag Harbor Elementary SchoolGrades: PK-5Distance: 0.4 mi
- 7/10Pierson Middle High SchoolGrades: 6-12Distance: 0.5 mi
A local agent can set up tours, give advice and negotiate with sellers.
- New York
- Suffolk County
- Sag Harbor
- 11963
- 12 Union St
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