1 E End Avenue, Unit 8/9BNew York City, NY 10075Price: $4,950,000

Perfectly perched on the 8th and 9th floors of 1 East End Avenue, this sun-flooded, grand eleven-into-ten room prewar duplex has sweeping river views and has been masterfully renovated by the acclaimed architects Fairfax and Sammons and exquisitely finished by renowned interior designers Brockschmidt & Coleman. Impeccably designed with timeless elegance and refined craftsmanship, this residence combines the grandeur of classic architecture with the sophistication of modern luxury. There are four bedrooms, four full windowed bathrooms, and a powder room. Filled with unique architectural details, the home has been thoughtfully renovated and features four-zone central air conditioning, oversized windows, custom millwork, and a wood burning fireplace.

A gracious entrance gallery sets the tone, complete with a coat closet and a cleverly designed closet beneath the sweeping staircase. Beyond, the expansive living room commands attention with a dramatic bay window showcasing breathtaking river views through three oversized windows, a stately wood-burning fireplace, beautiful herringbone floors, and custom built-in bookshelves. Adjacent, the serene library-also overlooking the East River-features a large picture window, built-in shelving, and elegant pocket doors offering flexibility of use. Currently configured as an inviting entertaining room, the formal dining room features custom built-ins, including a handsome desk area, making it versatile for both hosting and day-to-day living. Hidden behind a door is an elegant powder room. The heart of the home is the beautifully appointed, windowed kitchen with two west-facing windows. Outfitted for a chef, it includes a Wolf range with four burners and grill, two Miele dishwashers, a Sub-Zero refrigerator and freezer, and an adjacent oversized pantry with a Sub-Zero wine refrigerator, beverage refrigerator, and extensive custom storage. There is a windowed breakfast room with a built-in banquette for everyday dining. A discreet back staircase leads to the upper-level laundry room, completing this thoughtfully designed space.

Upstairs, the second level offers a sense of privacy and comfort. The grand staircase arrives at an upper gallery with a coat closet, hallway closet, and linen storage. The primary suite is a private retreat, offering three oversized windows with river views and three closets, including a spectacular cedar-lined dressing room. The en-suite, windowed marble bathroom features a luxurious oversized shower and there is a separate water closet. The second bedroom boasts three windows, abundant natural light, three closets, and a windowed en-suite bathroom with a bathtub. The third bedroom has two closets and a beautifully renovated windowed bathroom with a shower. The fourth bedroom includes a built-in desk. A separate staff bedroom and a full, windowed hallway bathroom provide additional flexibility. There is an enormous laundry room outfitted with a Whirlpool washer and dryer, sink, two drying closets and abundant storage.

Designed in 1929 by Pennington and Lewis in collaboration with McKim, Mead and White, One East End Avenue offers residents the highest levels of white-glove service. There is a 3% flip tax paid by the purchaser, and 50% financing is allowed.