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MLS ID KEY907439Last updated Sep 18, 2026

Single Family

3875 Hallock Lane

Active · Southold · Suffolk County, NY 11952

Bedrooms
5 Beds
Bathrooms
8 Baths
Year built
2002
Est. monthly taxes
$3,662.07
Property gallery0 / 46
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About this home

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.

Listing snapshot

Days on site
59 days
Listed on MLS
Sep 2, 2025
Full baths
7
Half baths
1
Annual property tax (MLS)
$43,944.87
Tax year
2026
Area source (MLS)
Other
Listing brokerage
Douglas Elliman Real Estate
MLS ID
KEY907439
Last updated
Sep 18, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
2002
Garage
Yes
Garage spaces
3
Parking
Attached, Private
Water source
Well
Sewer
Cesspool
Utilities
Electricity Connected

Interior features

Basement
Finished, Full
Heating
Forced Air, Propane
Cooling
Central Air
Interior
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
Flooring
Hardwood
Fireplace
Yes
Fireplaces
4

Exterior features

Architectural style
Estate
Construction materials
Frame
Exterior
Balcony
Private pool
No

Schools (MLS)

Elementary school
Mattituck-Cutchogue Elementary Sch
Elementary school district
Mattituck-Cutchogue
Middle school
Mattituck Junior-Senior High School
Middle school district
Mattituck-Cutchogue
High school
Mattituck Junior-Senior High School
High school district
Mattituck-Cutchogue

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. First seen on this site
  3. MLS status changed

Location

Southold · Suffolk County, NY 11952Show interactive map
3875 Hallock Lane

Southold · Suffolk County, NY 11952

Google Maps directions

Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

Listing data is supplied by the MLS and may change without notice.