A Rare Duplex Retreat with Soaring Ceilings & 395sqft Private Terrace   Selling with the tenant in place; the lease expires on 08/31/2026. A dramatic 1-bedroom, 2-bathroom duplex with a dedicated dining area, spanning 1,157sqft of thoughtfully designed living space. This two-level residence offers an architectural statement with 21-foot ceilings in the living room and a full-height wall of glass that opens to a private outdoor terrace, blending airy interiors with fresh open-air living. The open chef's kitchen is equipped with premium Liebherr and Miele appliances, including a gas cooktop, convection oven, and Incognito dishwasher, all framed by sleek cabinetry, stainless steel finishes, under-cabinet lighting, and a garbage disposal - elegant, efficient, and built for everyday luxury. On the upper level, the primary suite serves as a quiet retreat overlooking the dramatic living space and terrace. The en-suite bathroom offers a tranquil escape with a deep soaking tub and rain shower. Additional features include an in-unit washer/dryer, multi-zone climate control, and generous storage throughout. 15 William Street offers a resort-style amenity package: - Penthouse resident lounge with wraparound landscaped terrace - 50-foot indoor heated saltwater pool and outdoor hot tub - Full fitness center, yoga studio, squash court, and basketball half-court - Screening room, steam and sauna rooms, covered dog run, and valet parking - Premier Abigail Michaels concierge service Situated in the vibrant heart of the Financial District, you're surrounded by timeless charm and modern convenience - from the historic charm of Stone Street and Delmonico's, to luxury shopping at Printemps NYC, to picturesque waterfront walks. With access to all major subway lines (1, 2, 3, 4, 5, A, C, E, R, W, J, Z), the city is truly at your doorstep. There is a current assessment of $12,317.39 over the next 12 months, so $1,026.45/month for 12 months.