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$7,500,000

  • For Sale
  • Active
  • Single Family
  • 5 Beds
  • 7 Full Baths
  • 1 Partial Bath
  • 3 Car Garage
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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.

Full Property Details for 3875 Hallock Ln

General

  • Price: $7,500,000
  • Taxes: $43,944
  • Status: Active
  • Type: Single Family
  • Source: Long_Island
  • MLS ID: 907439
  • Updated: 12/28/2025
  • Added to Site: 136 day(s) ago

Interior

  • Number of Rooms: 20
  • 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)
  • Fireplace: Yes
  • Number of Fireplaces: 4
  • Appliances: Dishwasher, Dryer, Microwave, Oven, Range, Refrigerator, Stainless Steel Appliance(s), Washer, Indirect Water Heater
  • Flooring: Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 8
  • Full Bathrooms: 7
  • Half Bathrooms: 1

Bedrooms

  • Total Bedrooms: 5

Exterior

  • Exterior Features: Balcony
  • Porch/Patio/Deck: Patio, Porch

Parking

  • Garage: Yes
  • Garage Spaces: 3
  • Parking Features: Attached, Private

Location

  • County: Suffolk County

School Information

  • High School District: Mattituck-Cutchogue
  • Elementary School: Mattituck-Cutchogue Elementary Sch
  • Middle School: Mattituck Junior-Senior High School
  • High School: Mattituck Junior-Senior High School

Heating & Cooling

  • Central air: Yes
  • Cooling Type: Central Air
  • Heating Type: Forced Air, Propane
  • Heating Zones: 6

Utilities

  • Sewer: Cesspool
  • Water: Well
  • Utility Description: Electricity Connected

Structural Information

  • Architectural Style: Estate
  • Detached/Attached: Detached
  • Construction: Frame
  • Basement: Yes
  • Basement Desc.: Finished, Full Basement
  • Sq. Ft. Source: Other
  • Year Built: 2002

Lot Features

  • Property View: Panoramic, Water
  • Lot Size (Acres): 3.3
  • Lot Size (Sq. Ft.): 143,748

Water Features

  • Water Front: Yes
  • Water View: Yes
  • Water Front View: Beach Access, Beach Front, Sound, Water Access, Waterfront

Financial Considerations

  • Tax Amount: $43,944.87

Disclosures and Reports

  • Special Conditions: None
  • Property ID: 1000-112-00-01-00-008-004

Listed by Douglas Elliman Real Estate

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Listing agent

— 3875 Hallock Ln —

  • Douglas Elliman Real Estate

631-354-8100

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 3875 Hallock Ln

School District:Mattituck-Cutchogue Union Free School District
NameGradesDistance
Mattituck Cutchogue Elementary School
34900 Main Road, Cutchogue, NY 11935
K-66.3 mi
Mattituck Junior Senior High School
15125 Main Road, Mattituck, NY 11952
7-123 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 3875 Hallock Ln Get Price Alerts and Save Property

Date
Details
Price
Change
Source
10/16/2025
Price Reduced
$7,500,000
-11.76%
MLS
9/02/2025
Listed
$8,500,000
116.56%
MLS
11/01/2022
Sold
$3,925,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 3875 Hallock Ln

Year
Property Taxes
Change
Tax Assessment
Change
2020
-100%
$26,200
—
2022
$39,057
3%
$26,200
—
2021
$37,990
1%
$26,200
—
2020
$37,494
1%
$26,200
—
2018
$37,104
1%
$26,200
—
2017
$36,644
-1%
$26,200
—
2016
$37,049
3%
$26,200
—
2015
$35,987
1%
$26,200
—
2015
$35,655
2%
$26,200
—
2014
$34,825
3%
$26,200
—
2013
$33,839
—
$26,200
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost for 3875 Hallock Ln

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Down Payment
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*These costs are estimates, and the interest rates assume exceptional credit standing.

Listed by Douglas Elliman Real Estate

3875 Hallock Lane, Mattituck, NY 11952 (MLS# 907439) is a Single Family property with 5 bedrooms, 7 full bathrooms and 1 partial bathroom. 3875 Hallock Lane is currently listed for $7,500,000 and was received on September 02, 2025. Want to learn more about 3875 Hallock Lane? Do you have questions about finding other Single Family real estate for sale in Mattituck? You can browse all Mattituck real estate or contact a Coldwell Banker agent to request more information.

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