- Overview
- Description
- Property Details
- Location
- Facts & Features
- Getting Around
- Nearby Homes
$5,750,000
Monthly Est:$28,620
5 Beds
- 8 Baths
7 full baths + 1 half bath
8,505sqft
3875 Hallock Ln, Southold, NY 11952
$5,750,000
$28,620/moEst:
Get Pre-Approved
Single Family Residence
Built in 2002
$-- HOA
3.3 acres lot
$676/sq.ft
Description
Welcome to Lion’s Gate on the Sound, a premier waterfront estate set on over 3 private, gated acres along the Long Island Sound in Mattituck. This move-in-ready sanctuary blends timeless architecture with modern luxury, offering unmatched privacy and sweeping coastal views. A newly resurfaced driveway leads through electronic gates to beautifully lit grounds featuring a restored gazebo, lush lawns, and thoughtful landscaping. Inside, the home shines with freshly refinished hardwood floors, custom details, and a reimagined primary suite with spa-like finishes. Smart-home automation, new TVs, and elegant upgrades enhance everyday living. The finished lower level offers a professional gym, billiard room, and custom bar, while the upgraded garage with epoxy floors and smart tech is ideal for car enthusiasts. Outdoors, enjoy a new dining pavilion, full irrigation, and multiple vantage points for stunning sunsets over the Sound. Perfectly located near vineyards, farm stands, and charming village life, Lion’s Gate on the Sound is more than a home, it’s a legacy estate of luxury, seclusion, and natural beauty. Seller working to obtain pool permit.
- Houzeo last checked: 10 minutes ago
- Listing updated: September 18, 2026 at 3:34 pm
- Listing Provided by: Kristy B. Naddell (631) 905-8584 | Douglas Elliman Real Estate (631) 354-8100
- Source: OneKey MLS-NY | MLS#: 907439

Property Details
Status
Active
Type
Single Family Residence
No. of Stories
-
County
City
Neighborhood
--
Year Built
2002
HOA Fees
-
Finished Area
8,505 sqft
Lot Size
3.3 acres lot
Basement Area
- sqft
MLS Name
OneKey MLS
MLS Number
907439
MLS Status
Active
Days on Market
401
Cumulative Days on Market
381

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Location
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 5
Bathrooms: 8
Interior
Exterior Features
Balcony
Interior Features
First Floor Bedroom, First Floor Full Bath, Cathedral Ceiling(s), Eat In Kitchen, Entrance Foyer, Formal Dining, Pantry, Primary Bathroom, Master Downstairs, Quartz/quartzite Counters, Walk In Closet(s)
Appliances
Dishwasher, Dryer, Microwave, Oven, Range, Refrigerator, Stainless Steel Appliance(s), Washer, Indirect Water Heater
Sewer
Cesspool
Flooring
Hardwood
Heating
Forced Air, Propane
Cooling
Central Air
Construction
Year Built
Year Built: 2002
Home type
Single Family Residence
Architectural Style
Estate
Construction Materials
Frame
Utilities & Energy
Parking Features
Attached, Private
Utilities
Electricity Connected
Basement
Finished, Full
Water Source
Well
Other Features
Patio And Porch Features
Patio, Porch
Price History
| Date | Event | Price |
|---|---|---|
07/28/2026 Source: | Price Decreased | $5,750,000 -17.85% $676/sqft |
03/11/2026 Source: | Price Decreased | $6,999,000 -6.68% $823/sqft |
10/16/2025 Source: | Price Decreased | $7,500,000 -11.76% $882/sqft |
09/02/2025 Source: | Listed for Sale | $8,500,000 $999/sqft |
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Based on information from OneKey MLS, through Oct 09, 2026, 11:03AM. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. © 2026 OneKey® MLS. All rights reserved.
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