A gracious, turn-of-the-century corner residence offering three spacious bedrooms and a dedicated home office, all within a full-service building in a prime Upper West Side location. Grand in scale and refined in flow, this sun-filled home boasts soaring 10-foot beamed ceilings and nearly 7-foot-tall windows that frame peaceful, tree-lined views. The wood-paneled formal dining room and living room sit side by side, creating a seamless space for entertaining. Currently configured as an expansive double living room, the area feels warm and inviting with custom built-in bookshelves and flexible seating options. At the heart of the home is a beautifully renovated eat-in kitchen, featuring a butler's pantry, marble countertops, stainless steel appliances (including a 5-burner stove, dishwasher, and built-in banquette), and a striking patterned hardwood floor that adds texture and charm. Just off the kitchen is a generous home office with custom shelving and a powder room, ideal for working from home or as an overflow guest room. Three well-appointed bedrooms provide excellent closet space, including a cedar-lined closet and a walk-in hall closet. The serene primary suite enjoys dual exposures, two closets, and a windowed en-suite bath. Washer/dryer included in the home. Brand-new, top-of-the-line windows are scheduled to be installed by March 2026. Built in 1912 by renowned architect Gaetan Ajello, 645 West End Avenue is one of the Upper West Side's architectural gems. The grand lobby leaves a lasting impression with 20-foot ceilings, original stained glass, intricate ironwork, and travertine floors. This full-service building offers a 24-hour concierge, live-in superintendent, state-of-the-art fitness center, private storage, and a beautifully landscaped roof deck with panoramic Hudson River sunset views. Pet-friendly and just one block from Riverside Park, with access to playgrounds, bike paths, and dog runs, this address is also convenient to the express subway, crosstown bus, top dining, charming cafés, and boutique shopping. A timeless home in an unbeatable location.