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3875 Hallock Lane, 
Mattituck, NY 11952

$7,500,000

5

Beds

8

Baths

8,505

Sq Ft

Single Family

Virtual Tour

Active

Listed by

Kristy B. Naddell

Douglas Elliman Real Estate

Last updated:

December 28, 2025, 04:44 AM

MLS#

907439

Source:

OneKey MLS

About This Home

3875 Hallock Lane

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. Pool permit pending.

Home Facts

Single Family

8 Baths

5 Bedrooms

Built in 2002

Price Summary

7,500,000

$881 per Sq. Ft.

MLS #:

907439

Last Updated:

December 28, 2025, 04:44 AM

Added:

4 month(s) ago

Rooms & Interior

Bedrooms

Total Bedrooms:

5

Bathrooms

Total Bathrooms:

8

Full Bathrooms:

7

Interior

Living Area:

8,505 Sq. Ft.

Structure

Structure

Architectural Style:

Estate

Building Area:

8,505 Sq. Ft.

Year Built:

2002

Lot

Lot Size (Sq. Ft):

143,748

Finances & Disclosures

Finances

Price:

$7,500,000

Price per Sq. Ft:

$881 per Sq. Ft.

Source:OneKey MLS
Copyright 2026 OneKey MLS. All rights reserved. Listings courtesy of OneKey MLS as distributed by MLS GRID . OneKey MLS provides content displayed here (“provided content”) on an “as is” basis and makes no representations or warranties regarding the provided content, including, but not limited to those of non-infringement, timeliness, accuracy, or completeness. Individuals and companies using information presented are responsible for verification and validation of information they utilize and present to their customers and clients. OneKey MLS will not be liable for any damage or loss resulting from use of the provided content or the products available through Portals, IDX, VOW, and/or Syndication. Recipients of this information shall not resell, redistribute, reproduce, modify, or otherwise copy any portion thereof without the expressed written consent of OneKey MLS.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.