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New construction
  • $5,498,000

    50 Cecilia Drive, Muttontown, NY 11791

    7beds
    8,000sqft
    Loading
    Single Family Residence, Residential
    Built in 2026
    2 Acres Lot
    $-- Zestimate®
    $687/sqft
    $-- HOA

    What's special

    Expansive sweeping light-filled interiorsSpa-inspired bathFour additional en-suite bedroomsGrand courtyard entrancePrivate studyCustom-crafted oversized iron doorsSecondary staircase
    Framing almost complete on this singular masterpiece! Ready Spring 2027 Time To Customize! An Exceptional New Construction Estate in Muttontown, located within the renowned Syosset School District. 'The Diamond' sets a striking new benchmark for refined living. This exquisite 8,000-square-foot residence offers seven bedrooms, 15 rooms and a fresh, contemporary layout designed for today’s most elevated lifestyles. Meticulously envisioned, 'The Diamond' reflects an extraordinary level of craftsmanship and an aesthetic precision that blends seamlessly with classic architectural detailing. Expansive sweeping light-filled interiors create a home that is both sophisticated and welcoming. Generous ceiling heights, dramatic walls of glass, and a seamless flow between indoor and outdoor spaces define the mansion. A grand courtyard entrance leads to custom-crafted oversized iron doors that dramatically unveil a breathtaking two-story entry foyer. The formal dining room features a connoisseur’s wine center with smoky glass accents that shimmer with understated drama, and a serving buffet crowned by a sculptural hanging etagere. The grand living room is anchored by a commanding two-sided modern fireplace that offers open views of the lush 2 acre property. The bespoke chef’s kitchen serves as a true centerpiece, equipped with premium Wolf and Sub-Zero appliances, custom cabinetry, and a spacious layout ideal for both everyday living and large gatherings. A fully equipped scullery kitchen adds an additional layer of convenience and sophistication for those who entertain on a grand scale. The main level further unfolds with guest quarters, a private study, state-of-the-art media room, and a secondary staircase. Ascending to the primary suite is to enter a private world of luxury: a serene balcony overlooking the property, a spa-inspired bath, a private sitting room, and multiple expansive walk-in closets befitting the most discerning wardrobe collections. The second level continues with a spacious lounge and four additional en-suite bedrooms, each a haven of comfort and privacy. Outdoor living is equally impressive, with fully approved plans to consider upgrades for a resort-style spa pool and an open-air pavilion complete with its own kitchen creating an alfresco realm of unparalleled leisure. The 10-foot lower level also stands ready to fulfill any vision. 'The Diamond' is not merely a home, it is a residence designed for the discerning, where high-style luxury meets the ease and functionality of everyday living.
    130 days
    725
    25

    Zillow last checked:

    Listing updated:

    Listed by:

    Daniel Gale Sothebys Intl Rlty 516-677-0030,

    Valerie A. Rosenblatt PSA 516-238-7396

    Source: OneKey® MLS as distributed by MLS GRID,MLS#: 945621MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 7
      • Bathrooms: 8
      • Full bathrooms: 6
      • 1/2 bathrooms: 2
      Heating
      • ENERGY STAR Qualified Equipment, Natural Gas, Radiant Floor
      Cooling
      • Central Air, ENERGY STAR Qualified Equipment
      Appliances
      • Included: ENERGY STAR Qualified Appliances
      • Laundry: Laundry Room
      Features
      • First Floor Bedroom, First Floor Full Bath, Bidet, Built-in Features, Cathedral Ceiling(s), Central Vacuum, Chandelier, Chefs Kitchen, Crown Molding, Double Vanity, Eat-in Kitchen, Entertainment Cabinets, Entrance Foyer, Formal Dining, High Ceilings, His and Hers Closets, In-Law Floorplan, Kitchen Island, Open Floorplan, Pantry, Primary Bathroom, Quartz/Quartzite Counters, Recessed Lighting, Smart Thermostat, Soaking Tub, Sound System, Tray Ceiling(s), Walk-In Closet(s), Whole House Entertainment System, Wired for Sound
      • Flooring: Hardwood
      • Doors: ENERGY STAR Qualified Doors
      • Windows: ENERGY STAR Qualified Windows, Floor to Ceiling Windows, Wall of Windows
      • Basement: Full,Walk-Out Access
      • Attic: Full
      • Number of fireplaces: 1
      • Fireplace features: Family Room, Gas
      Interior area
      • Total structure area: 8,000
      • Total interior livable area: 8,000 sqft

      Property

      Parking
      • Total spaces: 10
      • Parking features: Driveway, Electric Vehicle Charging Station(s), Garage, Oversized, Private
      • Garage spaces: 3
      • Has uncovered spaces: Yes
      Features
      • Patio & porch: Patio, Terrace
      • Exterior features: Courtyard, Juliet Balcony, Lighting
      • Has private pool: Yes
      Lot
      • Size: 2 Acres
      • Features: Landscaped, Level, Private, Sprinklers In Front, Sprinklers In Rear, Views
      Details
      • Parcel number: 242915A0020150
      • Special conditions: None

      Construction

      Type & style
      • Home type: SingleFamily
      • Architectural style: Mini Estate
      • Property subtype: Single Family Residence, Residential
      Materials
      • Stone, Stucco
      Condition
      • New Construction,To Be Built,Under Construction
      • New construction: Yes
      • Year built: 2026
      • Major remodel year: 2026

      Utilities & green energy

      • Sewer: Cesspool
      • Water: Public
      • Utilities for property: Natural Gas Available

      Community & HOA

      HOA
      • Has HOA: No
      Location
      • Region: Muttontown

      Financial & listing details

      • Price per square foot: $687/sqft
      • Tax assessed value: $1,210,000
      • Date on market: 4/21/2026
      • Cumulative days on market: 131 days
      • Listing agreement: Exclusive Right To Sell

        Estimated market value

        Not available

        Estimated sales range

        Not available

        Not available

        Price history

        DateEventPrice
        4/21/2026Listed for sale$5,498,000+243.6%$687/sqft
        Source: OneKey® MLS as distributed by MLS GRID #945621 Report a problem
        9/3/2024Sold$1,600,000-8.6%$200/sqft
        Source: OneKey® MLS as distributed by MLS GRID #L3547682 Report a problem
        6/26/2024Pending sale$1,750,000$219/sqft
        Source: OneKey® MLS as distributed by MLS GRID #3547682 Report a problem
        5/24/2024Price change$1,750,000-5.4%$219/sqft
        Source: OneKey® MLS as distributed by MLS GRID #3547682 Report a problem
        4/28/2024Listed for sale$1,850,000+44.5%$231/sqft
        Source: OneKey® MLS as distributed by MLS GRID #3547682 Report a problem
        2/11/2021Sold$1,280,000-7.2%$160/sqft
        Source: Public Record Report a problem
        9/21/2020Price change$1,380,000-1.4%$173/sqft
        Source: Owner Report a problem
        8/20/2020Listed for sale$1,399,000$175/sqft
        Source: Owner Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2024-- $1,210 +2.5%
        2023-- $1,180 +2.4%
        2022-- $1,152
        2021$35,630 +3.6%--
        2020$34,395 -8.9%$2,205 -6.6%
        2019$37,737 $2,362 -13.9%
        2018$37,737 +4.8%$2,743
        2017$35,996 +6.6%$2,743
        2016$33,752 +616.1%$2,743
        2015$4,713 +6.7%$2,743
        2013$4,419 +6.8%$2,743
        2012$4,137 -82%$2,743 -12.5%
        2011$23,015 +2.8%$3,135 -2.1%
        2010$22,381 $3,202 -16.4%
        2009-- $3,832 -0.7%
        2008-- $3,859 +6%
        2006-- $3,641 -40.7%
        2005-- $6,142 -42.8%
        2004-- $10,740
        2003-- $10,740 -42.4%
        2002-- $18,650
        2001-- $18,650
        2000-- $18,650
        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.
        See how much you could borrow to make a competitive offer.

        Climate risks

        Neighborhood: 11791

        Getting around

        11 / 100
        Car-Dependent
        26 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • Elementary: Robbins Lane Elementary School
        • Middle: H B Thompson Middle School
        • High: Syosset Senior High School

        Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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