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For sale
    • $6,999,000

    3875 Hallock Ln, Mattituck, NY 11952

    5beds
    8,505sqft
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    Single Family Residence
    Built in 2002
    3.3 Acres Lot
    $6,651,600 Zestimate®
    $823/sqft
    $-- HOA

    What's special

    Waterfront estateRestored gazeboSweeping coastal viewsFull irrigationCustom detailsUpgraded garageSmart-home automation
    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.
    312 days
    |
    1,239
    |
    68
    |

    Zillow last checked:

    Listed by:

    Douglas Elliman Real Estate 631-354-8100,

    Kristy B. Naddell - Associate Real Estate Broker 631-905-8584

    Source: Out East,MLS#: 390784

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      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 5
      • Bathrooms: 8
      • Full bathrooms: 7
      • 1/2 bathrooms: 1
      Rooms
      • Room types: Family Room, Office
      Cooling
      • Central Air
      Features
      • Basement: Yes
      • Has fireplace: Yes
      Interior area
      • Total structure area: 8,505
      • Total interior livable area: 8,505 sqft
      Video & virtual tour

      Property

      Parking
      • Parking features: GarageAttached
      • Has attached garage: Yes
      Features
      • Stories: 3
      • Pool features: Room for a Pool
      • Has view: Yes
      • View description: Water
      • Has water view: Yes
      • Water view: Water
      • Waterfront features: Waterfront
      • Frontage type: Waterfront
      Lot
      • Size: 3.3 Acres
      Details
      • Parcel number: 1000112000100008004

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Single Family Residence
      Condition
      • New construction: No
      • Year built: 2002

      Community & HOA

      Location
      • Region: Mattituck

      Financial & listing details

      • Price per square foot: $823/sqft
      • Tax assessed value: $4,763,636
      • Date on market: 9/2/2025
      • Lease term: Contact For Details

        Estimated market value

        $6,651,600

        $6.32M - $6.98M

        $7,246/mo

        Price history

        DateEventPrice
        3/11/2026Price change$6,999,000-6.7%$823/sqft
        Source: Out East #390784 Report a problem
        10/16/2025Price change$7,500,000-11.8%$882/sqft
        Source: OneKey® MLS as distributed by MLS GRID #907439 Report a problem
        9/2/2025Listed for sale$8,500,000+116.6%$999/sqft
        Source: OneKey® MLS as distributed by MLS GRID #907439 Report a problem
        11/1/2022Sold$3,925,000-1.8%$461/sqft
        Source: OneKey® MLS as distributed by MLS GRID #L3400749 Report a problem
        9/2/2022Pending sale$3,995,000$470/sqft
        Source: OneKey® MLS as distributed by MLS GRID #3400749 Report a problem
        7/27/2022Price change$3,995,000-11.2%$470/sqft
        Source: OneKey® MLS as distributed by MLS GRID #3400749 Report a problem
        5/18/2022Listed for sale$4,500,000-1.1%$529/sqft
        Source: OneKey® MLS as distributed by MLS GRID #3400749 Report a problem
        3/7/2020Listing removed$4,550,000$535/sqft
        Source: Coldwell Banker M&D Good Life #*1362981 Report a problem
        2/6/2020Price change$4,550,000-8.1%$535/sqft
        Source: Coldwell Banker M&D Good Life #*1362981 Report a problem
        11/22/2019Listed for sale$4,950,000-0.9%$582/sqft
        Source: Coldwell Banker M&D Good Life #P1362981 Report a problem
        9/8/2018Listing removed$4,995,000$587/sqft
        Source: Coldwell Banker M&D Good Life #3001630 Report a problem
        2/3/2018Listed for sale$4,995,000-28.6%$587/sqft
        Source: Brown Harris Stevens #43617 Report a problem
        7/14/2016Listing removed$6,995,888$823/sqft
        Source: Douglas Elliman #2847137 Report a problem
        6/8/2016Price change$6,995,888-6.7%$823/sqft
        Source: Douglas Elliman #2847137 Report a problem
        4/25/2016Listed for sale$7,500,000$882/sqft
        Source: Douglas Elliman #2847137 Report a problem
        2/27/2016Listing removed$7,500,000$882/sqft
        Source: Lin Pan Realty Group LLC #2825992 Report a problem
        2/3/2016Price change$7,500,000-14.8%$882/sqft
        Source: Lin Pan Realty Group LLC #2825992 Report a problem
        10/15/2015Listed for sale$8,800,000$1,035/sqft
        Source: Lin Pan Realty Group LLC #2759627 Report a problem
        9/13/2015Listing removed$8,800,000$1,035/sqft
        Source: Lin Pan Realty Group Report a problem
        7/15/2015Listed for sale$8,800,000-9.7%$1,035/sqft
        Source: Lin Pan Realty Group Report a problem
        6/3/2010Listing removed$9,750,000$1,146/sqft
        Source: Corcoran #2200509 Report a problem
        9/6/2009Listed for sale$9,750,000+3800%$1,146/sqft
        Source: Corcoran #2200509 Report a problem
        2/21/1997Sold$250,000$29/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025-- $26,200
        2024-- $26,200
        2023-- $26,200
        2022-- $26,200
        2021-- $26,200
        2020-- $26,200
        2019-- $26,200
        2018-- $26,200
        2017$37,104 $26,200
        2016-- $26,200
        2015-- $26,200
        2014-- $26,200
        2013-- $26,200
        2012-- $26,200
        2011-- $26,200
        2010-- $26,200
        2009-- $26,200
        2008-- $26,200
        2007$29,508 +16.1%$26,200
        2005$25,405 +6.2%$26,200
        2004$23,912 +5.9%$26,200
        2003$22,590 +31.8%$26,200 +24.2%
        2002$17,138 $21,100
        2001-- $21,100
        Find assessor info on the county website

        Monthly payment

        Estimated monthly payment$1,822
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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        Climate risks

        Neighborhood: 11952

        Getting around

        2 / 100
        Car-Dependent

        Nearby schools

        GreatSchools rating

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