Now delivering in as little as 9 months, ARCH&Co is redefining the Hamptons' building experience. We believe your home should reflect your unique vision. Only this extraordinary pre-completion opportunity allows you to collaborate on a residence that is customized to your exact specifications. This 5,000 sq ft estate on just shy of a half-acre lot is priced at $3.9M, including the finished residence - not just the land. The home features 5 bedrooms, 4.5 bathrooms (option to expand), and a heated gunite 16 x 36 pool, all standard. ARCH&Co provides an exclusive array of over 50 options, to personalize the build with options such as additional bedrooms, bathrooms, gym, home theater, sauna, steam room, outdoor kitchens, fireplaces, and more. Inside, you are invited to work alongside the renowned Fiorello Design to select premium tiles, flooring, cabinetry, countertops, and paint colors, - all included within the standard pricing. This is a rare opportunity to create a fully customized home, without the complexity of a traditional custom build, that only ARCH&Co can offer.
Pending
$3,899,999
1215 Middle Line Hwy, Sag Harbor, NY 11963
5beds
5,000sqft
Single Family Residence
Built in 2026
0.43 Acres Lot
$3,790,700 Zestimate®
$780/sqft
$-- HOA
What's special
Paint colorsPremium tiles
- 159 days
- 52
- 0
Zillow last checked:
Listed by:
Compass 631-259-9993,
Josh Seidner - Real Estate Sales Person 631-995-4077
Source: Out East,MLS#: 394447
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Rooms
- Room types: Family Room
Features
- Basement: Yes
- Has fireplace: No
Interior area
- Total structure area: 5,000
- Total interior livable area: 5,000 sqft
Property
Parking
- Parking features: GarageDetached
- Has garage: Yes
Features
- Has private pool: Yes
Lot
- Size: 0.43 Acres
Details
- Parcel number: 0903007000300030000
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Condition
- New construction: No
- Year built: 2026
Community & HOA
Location
- Region: Sag Harbor
Financial & listing details
- Price per square foot: $780/sqft
- Tax assessed value: $921,300
- Date on market: 3/27/2026
- Lease term: Contact For Details
Estimated market value
$3,790,700
$3.60M - $3.98M
$6,164/mo
Price history
| Date | Event | Price |
|---|---|---|
| 6/10/2026 | Pending sale | $3,899,999$780/sqft |
Source: Out East #394447 Report a problem | ||
| 3/27/2026 | Listed for sale | $3,899,999+160%$780/sqft |
Source: Out East #394447 Report a problem | ||
| 7/29/2025 | Sold | $1,500,000-6%$300/sqft |
Source: | ||
| 5/1/2025 | Pending sale | $1,595,000$319/sqft |
Source: | ||
| 3/31/2025 | Listed for sale | $1,595,000+942.5%$319/sqft |
Source: | ||
| 3/4/1997 | Sold | $153,000$31/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $921,300 |
| 2024 | -- | $921,300 |
| 2023 | -- | $921,300 |
| 2022 | -- | $921,300 +0.9% |
| 2021 | -- | $913,500 |
| 2020 | -- | $913,500 |
| 2019 | -- | $913,500 +14.2% |
| 2018 | -- | $799,900 |
| 2017 | $3,041 | $799,900 +33.5% |
| 2016 | -- | $599,400 +26.1% |
| 2015 | -- | $475,500 |
| 2014 | -- | $475,500 |
| 2013 | -- | $475,500 |
| 2012 | -- | $475,500 |
| 2011 | -- | $475,500 +0.3% |
| 2007 | $1,782 -32.3% | $474,000 +2.3% |
| 2005 | $2,631 +31.3% | $463,343 +7774.6% |
| 2004 | $2,004 +9.4% | $5,884 |
| 2003 | $1,832 +11.3% | $5,884 |
| 2002 | $1,647 -0.9% | $5,884 |
| 2001 | $1,662 +3.4% | $5,884 |
| 2000 | $1,608 | $5,884 |
Find assessor info on the county website







