GRAND PARK AVENUE DUPLEX This high floor, ten room duplex residence is flooded with sunlight. The large corner living room with woodburning fireplace faces Park Avenue, and opens to the adjacent formal dining room. The wood paneled library with woodburning fireplace serves as an elegant sitting room or private home office. The corner den is open to the kitchen, making it ideal for casual entertaining. The sunny eat-in-kitchen includes top of the line appliances and leads to a laundry room with a dog shower, and to a staff bedroom with full bath. The gracious entrance gallery includes a paneled wet bar and two grand staircases leading to the bedroom wing on the 11th floor. The primary bedroom has a separate corner study, generous closets and a renovated marble bathroom with a double vanity and separate tub and shower. The second and third bedrooms both have baths ensuite. The apartment is cooled by a combination of central and through the wall air conditioning.829 Park Avenue was built in 1909 and is situated in a prime Upper East Side location. The full service prewar cooperative has a fitness center and private storage for each apartment. The building permits financing up to 50% of the purchase price and there is a 1.5% flip tax payable by the purchaser.