Rare Offering with 4% to Buyer Broker - Penthouse-Level Luxury at 15 William An exceptional opportunity to own a breathtaking residence at 15 William, offering unparalleled penthouse-level views of New York Harbor, the Hudson River, and the Verrazano Bridge. This expansive home features ceilings just under 10 ft and a wall of east & south-facing windows, filling the space with natural light and dramatic sunsets. The primary suite is a true retreat, boasting a custom walk-in closet with built-in shoe cabinetry and a spa-like ensuite bathroom with a deep soaking tub, separate rain shower, and bespoke vanity. The open chef's kitchen is outfitted with Miele appliances, and a built-in home office adds both luxury and functionality. Residents enjoy 30,000 SF of world-class amenities, including a sky lounge with a penthouse-level terrace, a 50-foot heated saltwater lap pool, squash and basketball courts, a state-of-the-art fitness center, a screening room, a children's playroom, and an outdoor hot tub with rain shower. Additional perks include a 24-hour attended lobby, resident manager, valet parking, and a covered dog run. Now offering an exclusive 4% for buyer brokers A unique opportunity in the heart of the Financial District, with immediate access to top dining, shopping, and transit options, including the 2,3,4,5,6,R,W trains, Pier 11 ferries, and Citi Bike stations. 5,6,R,W trains, Pier 11 ferries, and Citi Bike stations.