Welcome to one of the North Fork's most iconic and impeccably restored estates, where timeless grandeur blends seamlessly with refined modern living. Originally built circa 1915, this Georgian estate, formally known as the Cosden Estate, has been lovingly restored for today's modern luxuries while maintaining its historic vibe. Set on a professionally landscaped acre in one of Southold's most desirable locations, this 6,000sq ft home features 6 spacious bedrooms and 6 luxurious bathrooms. An entertainer's dream, this home includes a heated saltwater gunite pool with integrated spa, surrounded by a bluestone patio and enclosed by a classic Walpole fence with custom automated gate entry. Across the street, enjoy peace of mind and enduring views with 22 acres of unbuildable land. From the mature, symmetrical sugar maples at the front entrance to the elegant pleached elm at the rear, every inch of landscaping has been thoughtfully curated. Inside, soaring vaulted ceilings, herringbone wood floors, and a grand wood-burning fireplace define the stunning living room. Natural light pours in throughout the home, enhancing its warm, inviting atmosphere. The chef's kitchen, renovated in 2020 and refreshed in 2024, features new quartz countertops, a refinished oversized island, and custom open shelving. The primary suite offers a serene retreat with a spacious sitting room and a fully renovated spa-like bathroom with a soaking tub and a large enclosed shower. Additional highlights include, new HVAC system, upgraded ADT security system, State-of-the-art irrigation throughout, a large temperature-controlled wine cellar, and close proximity to Town Beach and Lighthouse Road Beach. The backyard is a private, quiet and peaceful oasis, perfect for relaxing or entertaining. This extraordinary estate offers a rare opportunity to own a piece of North Fork history, updated for today's lifestyle.
Sold for $3,850,000
$3,850,000
1750 Mount Beulah Avenue, Southold, NY 11971
6beds
6,000sqft
Single Family Residence, Residential
Built in 1915
1.08 Acres Lot
$4,032,000 Zestimate®
$642/sqft
$8,361 Estimated rent
Home value
$4,032,000
$3.63M - $4.52M
$8,361/mo
Zestimate® history
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List your homeWhat's special
Renovated spa-like bathroomProfessionally landscaped acreMature symmetrical sugar maplesBluestone patioHeated saltwater gunite poolPrimary suiteCustom open shelving
Zillow last checked:
Listing updated:
Listed by:
Kristy B. Naddell 631-905-8584,
Douglas Elliman Real Estate 631-354-8100
Bought with:
Non Member-MLS
Buyer Representation Office
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 875401
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 6
- Bathrooms: 6
- Full bathrooms: 5
- 1/2 bathrooms: 1
Primary bedroom
- Description: Ensuite
- Level: First
Bedroom 1
- Description: Guest 1
- Level: First
Bedroom 2
- Description: Guest 2
- Level: First
Bedroom 3
- Description: Guest 3
- Level: First
Bedroom 4
- Description: Guest 4, Alternative 2nd Floor Master
- Level: Second
Bedroom 5
- Description: Ensuite to Guest 4
- Level: Second
Bedroom 5
- Description: Guest 5
- Level: Second
Bedroom 5
- Description: Guest 6
- Level: Second
Bathroom 1
- Description: Full, Ensuite to Master
- Level: First
Bathroom 2
- Description: Full Bath
- Level: First
Bathroom 3
- Description: Full Bath, Jack and Jill
- Level: First
Bathroom 4
- Description: Full Bath, Jack & Jill
- Level: Second
Other
- Description: Stables, Currently Play Area and Gym
- Level: First
Dining room
- Description: Soaring Ceiling
- Level: First
Family room
- Description: Wood Burning Fireplace
- Level: First
Kitchen
- Description: Newly Renovated in 2020
- Level: First
Living room
- Description: or Flex Playroom
- Level: First
Office
- Description: South Wing Off Stables
- Level: First
Heating
- Forced Air
Cooling
- Central Air
Appliances
- Included: Dishwasher, Dryer, Electric Water Heater, Refrigerator, Washer
Features
- First Floor Bedroom, Cathedral Ceiling(s), Eat-in Kitchen, Entrance Foyer, Formal Dining, Primary Bathroom, Master Downstairs
- Flooring: Hardwood
- Windows: Skylight(s)
- Basement: Partial,Storage Space,Unfinished
- Attic: Dormer
- Number of fireplaces: 1
- Fireplace features: Living Room
Interior area
- Total structure area: 47,045
- Total interior livable area: 6,000 sqft
Property
Parking
- Total spaces: 3
- Parking features: Attached, Private
- Garage spaces: 3
Features
- Patio & porch: Patio
- Has private pool: Yes
- Pool features: In Ground, Salt Water
- Has spa: Yes
- Fencing: Full
- Has view: Yes
- View description: Park/Greenbelt, Trees/Woods
Lot
- Size: 1.08 Acres
- Features: Level, Sprinklers In Front, Sprinklers In Rear
Details
- Parcel number: 1000051000300002010
- Special conditions: None
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Carriage House,Victorian
- Property subtype: Single Family Residence, Residential
Materials
- Brick
Condition
- Year built: 1915
- Major remodel year: 2020
Utilities & green energy
- Sewer: Septic Tank
- Water: Public
- Utilities for property: Natural Gas Available
Community & HOA
HOA
- Has HOA: No
Location
- Region: Southold
Financial & listing details
- Price per square foot: $642/sqft
- Tax assessed value: $14,500
- Annual tax amount: $22,274
- Date on market: 7/13/2025
- Cumulative days on market: 17 days
- Listing agreement: Exclusive Right To Sell
Price history
| Date | Event | Price |
|---|---|---|
| 8/25/2025 | Sold | $3,850,000-3.6%$642/sqft |
Source:  OneKey® MLS as distributed by MLS GRID #875401 Report a problem | ||
| 7/30/2025 | Pending sale | $3,995,000$666/sqft |
Source: OneKey® MLS as distributed by MLS GRID #875401 Report a problem | ||
| 7/13/2025 | Listed for sale | $3,995,000+28.9%$666/sqft |
Source: OneKey® MLS as distributed by MLS GRID #875401 Report a problem | ||
| 8/26/2024 | Sold | $3,100,000-8.7%$517/sqft |
Source: OneKey® MLS as distributed by MLS GRID #L3550414 Report a problem | ||
| 6/27/2024 | Pending sale | $3,395,000$566/sqft |
Source: OneKey® MLS as distributed by MLS GRID #3550414 Report a problem | ||
| 5/9/2024 | Listed for sale | $3,395,000+129.4%$566/sqft |
Source: OneKey® MLS as distributed by MLS GRID #3550414 Report a problem | ||
| 5/2/2017 | Sold | $1,480,000-7.5%$247/sqft |
Source: Public Record Report a problem | ||
| 2/11/2017 | Pending sale | $1,600,000$267/sqft |
Source: Douglas Elliman #*1272501 Report a problem | ||
| 5/19/2016 | Listed for sale | $1,600,000$267/sqft |
Source: Beninati Associates #P1223434 Report a problem | ||
| 12/1/2015 | Listing removed | $1,600,000$267/sqft |
Source: Beninati Associates #2760002 Report a problem | ||
| 5/11/2015 | Price change | $1,600,000+3.2%$267/sqft |
Source: Beninati Associates #2760002 Report a problem | ||
| 5/5/2015 | Listed for sale | $1,550,000+19.2%$258/sqft |
Source: Beninati Associates #2760002 Report a problem | ||
| 5/5/2010 | Sold | $1,300,000$217/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $14,500 |
| 2024 | -- | $14,500 |
| 2023 | -- | $14,500 |
| 2022 | -- | $14,500 |
| 2021 | -- | $14,500 |
| 2020 | -- | $14,500 |
| 2019 | -- | $14,500 |
| 2018 | -- | $14,500 |
| 2017 | $19,526 | $14,500 |
| 2016 | -- | $14,500 |
| 2015 | -- | $14,500 |
| 2014 | -- | $14,500 |
| 2013 | -- | $14,500 +2.8% |
| 2012 | -- | $14,100 |
| 2011 | -- | $14,100 |
| 2010 | -- | $14,100 -30.5% |
| 2009 | -- | $20,300 |
| 2008 | -- | $20,300 |
| 2007 | $19,009 +20% | $20,300 |
| 2005 | $15,839 +4.6% | $20,300 |
| 2004 | $15,144 +4.1% | $20,300 |
| 2003 | $14,542 +4.7% | $20,300 |
| 2002 | $13,884 | $20,300 |
| 2001 | -- | $20,300 |
| 2000 | $12,271 | $20,300 |
Find assessor info on the county website
Neighborhood: 11971
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Nearby schools
GreatSchools rating
- 6/10Southold Elementary SchoolGrades: K-6Distance: 1.9 mi
- 6/10Southold Junior Senior High SchoolGrades: 7-12Distance: 1.9 mi
Schools provided by the listing agent
- Elementary: Southold Elementary School
- Middle: Southold Junior-Senior High School
- High: Southold Junior-Senior High School
Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Estimated market value
$4,032,000
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Estimated market value
$4,032,000
- New York
- Suffolk County
- Southold
- 11971
- 1750 Mount Beulah Avenue
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