SINGLE FAMILY TOWNHOUSE! Welcome to a masterpiece of contemporary luxury. This meticulously gut-renovated, 20-foot wide townhouse spans approximately 5,100 square feet, offering a rare combination of impressive scale and state-of-the-art sophistication. Having undergone a comprehensive top-to-bottom renovation-further enhanced by recent high-end upgrades-this 5-bedroom, 5.5-bathroom residence stands as a paragon of Upper East Side living. The Interior: Grand Proportions & Designer Finishes The home is defined by its expansive, light-filled proportions and "no-expense-spared" finishes: Architectural Detail: The superior 20-foot width allows for grander entertaining spaces featuring Grade-A white oak flooring, three wood-burning fireplaces with restored original mantels, and a dramatic double-height ceiling in the formal dining room. The Parlor Level: Designed for sophisticated hosting, this level contains a large formal living room as well as a bespoke bar and a separate den featuring extensive custom built-in shelving. The den features windows overlooking the two-story glassed-in dining room, affording views of the private garden and ensuring ample light permeates the entire floor. The Chef's Sanctuary: The sublime eat-in kitchen features a massive waterfall island, Caesarstone quartz countertops, and striking imported Panda Marble backsplashes. High-End Appliance Suite: Recently upgraded with a curated selection of professional-grade brands: Bluestar double oven and induction range for the ultimate culinary performance. Sub-Zero integrated refrigeration. Wolf microwave and Thermador warming drawer. Integrated Grohe Blue system providing instant chilled carbonated and filtered water. The Primary Suite: A true retreat featuring a spacious walk-in closet plus two custom reach-in closets, a private terrace, and a spa-like en-suite bathroom with marble mosaic floors, a Victoria & Albert walk-in shower, and a free-standing soaking tub. Thoughtful Luxuries: The home includes custom built-in shelving in the den and the second and third-floor bedrooms, as well as a separate laundry room equipped with full-sized appliances. Smart Home Integration: Modern convenience is at your fingertips with keypad entry, app-controlled lighting, and app-controlled heating/cooling. Security is paramount with a comprehensive ADT system and with Ring integrated cameras. The recently installed skylight features an app-controlled smart-film shade system, and motorized window treatments are installed in the upper story bedrooms. An Outdoor Urban Oasis The crown jewel of the garden level is the spectacular private backyard. Accessed through a wall of windows in the dining area, this oversized, 20-foot wide garden offers a serene, lush escape-perfect for al fresco dining. Additionally, the primary suite features a private terrace with motorized retractable Sunbrella shades. Looking toward the future, the new roof (installed in 2025) was specifically engineered to allow for the construction of a roof deck if the owner desires a sky-high retreat. The Neighborhood: Yorkville's Finest Enclave Situated on a peaceful, tree-lined block between York and East End Avenues, 505 East 84th Street is located in one of Manhattan's most tranquil pockets. Proximity to Nature: You are less than a block from the iconic Carl Schurz Park, home to Gracie Mansion and the scenic East River Esplanade. Education: The residence is positioned within two blocks of schools including Chapin and Brearley. Lifestyle: Short distance away from Asphalt Green, offering world-class athletic facilities and an Olympic-size pool. Community & Culture: The area is celebrated for its charming local bistros and the convenience of the Second Avenue Subway (Q train).