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1750 Mount Beulah Avenue

Southold, NY 11971

6 beds
6 baths
6,000 sqft
~1 acre lot
$665 per sqft
1915 build
– on site

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.

Listing courtesy of ONEKEY / Douglas Elliman Real Estate

Last checked: Checking… • Last updated Jul 14, 2025 •

MLS# 875401 —

The Building

Year Built:

1915
Basement:

true
Architectural Style:

Carriage House, Victorian
Construction Materials:

Brick
Patio And Porch Features:

Patio
Year Built Effective:

2020
Building Area Units:

Square Feet
Building Area Total:

47045
Window Features:

Skylight(s)
Attic:

Dormer

Interior

Living Area:

6000
Total Rooms:

14
Interior Features:

First Floor Bedroom, Cathedral Ceiling(s), Eat-in Kitchen, Entrance Foyer, Formal Dining, Primary Bathroom, Master Downstairs, Wet Bar
Fireplace Features:

Living Room
Fireplaces Total:

1
Fireplace:

true
Flooring:

Hardwood
Living Area Source:

Other
# of Kitchens:

1

Financial & Terms

Lease Considered:

false

The Property

Fencing:

Full
Lot Features:

Level, Sprinklers In Front, Sprinklers In Rear
Lot Size Acres:

1.08
Parcel Number:

1000-051-00-03-00-002-010
Property Type:

Residential
Property Subtype:

Single Family Residence
Lot Size SqFt:

47,045 Sqft
Property Attached:

false
Additional Parcels:

false
Waterfront:

false

Listing Agent

Contact info:

Taxes

Tax Year:

2025
Tax Source:

Municipality
Tax Annual Amount:

22274

Beds

Total Bedrooms:

6

Baths

Full Baths:

5
Half Baths:

1
Total Baths:

6

The Listing

Special Listing Conditions:

None

Heating & Cooling

Heating:

Forced Air, Natural Gas
Cooling:

Central Air
# of Heating Zones:

4

Utilities

Sewer:

Septic Tank
Utilities:

Natural Gas Available
Water Source:

Public

Appliances

Appliances:

Dishwasher, Dryer, Electric Water Heater, Refrigerator, Washer

Schools

High School:

Southold Junior Senior High School
Elementary School:

Southold Elementary School
High School District:

Southold
Middle School:

Southold Junior-Senior High School
Elementary School District:

Southold
Middle School District:

Southold

The Community

Association:

false
Senior Community:

false
Pool Features:

In Ground, Salt Water
Pool Private:

true
Spa:

true

Parking

Parking Features:

Attached, Private
Garage:

true
Garage Spaces:

3
Carport:

false

Monthly cost estimate

Asking price

$3,995,000

Expense	Monthly cost
Mortgage	$21,392
Taxes	$1,856
Insurance	$1,098
Utilities	$575 See report
Total	$24,921/mo.^*
	^*This is an estimate

Explore the Area

My Commute

From

Walk Score®

Provided by WalkScore® Inc.

Bike Score®

Provided by WalkScore® Inc.

Air Pollution Index

Provided by ClearlyEnergy

Sale history

Date	Event	Source	Price	% Change
7/13/25 Jul 13, 2025	Listed / Active	ONEKEY	$3,995,000	28.9%
8/26/24 Aug 26, 2024		ONEKEY	$3,100,000

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This house located in North Fork, Southold, NY 11971 is currently for sale for $3,995,000. 1750 Mount Beulah Avenue is a 6,000 square foot house with 6 beds and 6 baths that has been on Estately for 0 days. 1750 Mount Beulah Avenue is in the North Fork neighborhood of Southold. This house is in the attendance area of Southold Junior Senior High School and Southold Elementary School.

Listing Courtesy of: ONEKEY and Douglas Elliman Real Estate.

IDX information is provided exclusively for consumers’ personal non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS.

Based on information submitted to the MLS GRID. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.