An impeccable 9-room duplex is located in a highly sought-after boutique Park Avenue co-op. Designed by Mariette Himes Gomez, this mint-condition apartment is bathed in light and graced with a grand staircase, soaring ceilings, oversized windows, central air, a state-of-the-art kitchen, ample closets, and a Sonos sound system. The entry foyer leads to an oversized gallery/parlor with a Jamb marble wood burning fireplace, gorgeous wainscoting, and inlaid floors. The gallery functions as a formal dining room as it leads into the expansive north-facing living room with floor-to-ceiling French windows and ornate crown molding. At the other end of the gallery, a mahogany paneled library offers views overlooking the townhouses to the west. The triple sized chefâ€™s kitchen, complete with name brand appliances, comfortable seating, and multiple windows beckons every buyerâ€™s internal cook. A laundry room and a half bath and a jewel box powder room complete the layout on this lower floor. A grand staircase leads to the upstairs floor offering a double sized master-suite with a wall of closets, a windowed dressing room with additional closets, and a large master bath. The luxurious, windowed master bath features marble and tile and offers a double-sink console, shower, and soaking tub. Also upstairs, two more large, west facing bedrooms have custom closets and share a generous Jack and Jill bathroom. 830 Park Avenue is a full-service New York City cooperative. This beautiful neo-Georgian style co-op was built in 1912 by George and Edward Blum. The building's beauty is apparent through its detailing and the recessed lobby entrance that adds to its distinctive look. The building includes full-time doormen staff, private basement storage, and a bike room. Pets are welcome. There is a 2.5% flip tax paid by the purchaser.