For Sale

50 Cecilia Drive Muttontown, NY 11791

$5,498,000

Listed April 21, 2026, 130 days ago

Listing courtesy of Valerie A. Rosenblatt PSA, Daniel Gale Sothebys Intl Rlty MLS #KEY945621

  • 7Bedrooms
  • 7Bathrooms
  • 8,000Square feet
  • $687Per square foot
  • 2026Year built

About this home

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.

Description supplied by the listing broker.

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
  • ENERGY STAR Qualified Door(s)
  • Entertainment Cabinets
  • Entrance Foyer

Property details

Interior

Attic
Full
Additional rooms
Dining Area,Home Office,Library/Den,Media Room
Flooring
Hardwood
Windows
ENERGY STAR Qualified Windows, Floor to Ceiling Windows, Wall of Windows
Fireplace
Yes
Fireplaces
1
Appliances
ENERGY STAR Qualified Appliances

Systems and utilities

Heating
ENERGY STAR Qualified Equipment, Natural Gas, Radiant Floor
Heating zones
3
Cooling
Central Air, ENERGY STAR Qualified Equipment
Utilities
Natural Gas Available
Water
Public

Exterior and lot

Construction
Stone, Stucco
Architectural style
Mini Estate
Condition
New Construction, To Be Built, Under Construction
Parking
Driveway, Electric Vehicle Charging Station(s), Garage, Oversized, Private
Private pool
Yes
Patio and porch
Patio, Terrace
Lot features
Landscaped, Level, Private, Sprinklers In Front, Sprinklers In Rear, Views

Tax and legal

Parcel number
2429-15-A-00-2015-0
Listing agreement
Exclusive Right To Sell

Property details supplied by the listing broker through OneKey MLS, as of August 29, 2026. Fields not shown were not supplied and should not be read as absent from the property.

This listing

  1. April 21, 2026 Listed at $5,498,000 130 days ago

Location

50 Cecilia Drive, Muttontown, NY 11791

Nearby homes for sale