Landmarked 2-family brownstone with a delightful mix of historic detail and modern flourish in the heart of Park Slope. The upper triplex begins on the grand parlor floor replete with restored pocket doors and trim, 12' ceilings, and pier mirrors combined with with modern sconces and chandelier. The rear parlor features a custom chef's kitchen with top of the line appliances, decorative fireplace and access to the sunny rear deck. Entertain your friends around the center island and bask in the sunshine streaming through the oversized windows. Ascend to the second floor and find three sunny and brightly lit bedrooms, a classic bath with separate shower, claw foot tub and Waterworks fixtures. Don't worry about where to stash your wardrobe, we have you covered with the enormous closet. On the top floor are three generously sized bedrooms, a spacious passage ideal for a custom dressing room and a charming skylit bath. You will fall in love with the gorgeous light on all three levels of this beautiful home. The garden apartment, with its own entrance under the stoop is a perfect high income rental or in-law apartment with one bedroom, a rear windowed mudroom leading to the garden and plenty of space to customize closets and storage. The rear garden is a quiet oasis with a bluestone terrace and mature plantings. The front fa ade and cornice were fully restored in 2022 for enhanced curb appeal. 820 Union is situated on an ideal block, zoned for PS321, close to transportation, 1.5 blocks from Prospect Park, and steps from restaurants, shopping and services. This is a home you can enjoy for many years to come!