At almost 25 feet in width, 141-143 East 63rd Street has undergone a remarkable transformation and now awaits a new owner to complete their dream New York mansion. This property now features a newly constructed structure with an excavated cellar, a classic brownstone front facade with a high stoop entry, and a modern rear facade of brick and expansive casement windows and doors. The spacious floor plans and lofty ceilings present an extraordinary opportunity to personalize this grand mansion on a distinguished Upper East Side street. With approved D.O.B. plans by the renowned architecture firm DHD and active permits, construction can begin immediately, drastically reducing the overall time before moving into a brand new home. Originally two separate townhouses, they have been merged to create this impressive 25-foot-wide footprint. The current plan accommodates up to eight bedrooms, eight baths, and two half baths. Significant progress has been made, including releveled floors, complete excavation, installed beams, and windows. The new owner will have the opportunity to select the finishes, with the construction team estimating about 12 months to complete the project. Additionally, this monumental townhouse has approvals for an elevator to every floor. Ground Level Excavation has enhanced the ceiling height on this level, which includes a home theater, full-size laundry room, full bath, and additional storage. Garden Floor Beneath the rebuilt stoop is an additional entryway with storage and an office. This floor also features a full bath and a powder room for guests. In the rear is a spacious open kitchen with sliding glass doors leading to a patio/garden, with space and plumbing for an in-ground heated pool. Parlor Floor This level boasts a grand, full-width living room with a gas fireplace, a large dining room, a butler's pantry, and a powder room. A sizable terrace at the rear overlooks the garden. Third Floor The home's width allows for four bedrooms on this floor, accompanied by three full baths. The southern bedrooms have charming bay windows, and one includes a fireplace. Fourth Floor The entire floor is dedicated to the primary suite, featuring an expansive dressing room, luxe primary bath, storage, and an additional bedroom or home office.Fifth FloorThe top floor includes another lounge with a wet bar, two bedrooms (one potentially serving as a gym), a south-facing terrace, and an outdoor gas fireplace. Rooftop The plans envision a rooftop terrace, which is yet to be built.