20 East End AvenueÂ’s breathtaking Maisonette, a prized residence designed by the world- renowned architect Robert A.M. Stern, spans approximately 4737 interior square feet, over three floors. Designed in the style of classic pre-war apartment houses, this palatial home features soaring ceilings, expansive casement windows, custom designed moldings, and Appalachian oak flooring with a walnut stain. The Maisonette offers a gracious entry gallery with a grand staircase that connects entertaining and living spaces to the homeÂ’s private quarters above. This residence is washed with natural light throughout and features a substantial chefÂ’s kitchen with Gaggenau 400 series appliances and millwork custom designed by Sterm, a spacious formal dining room, a majestic living room, and a library designed to easily function as a fifth bedroom. The expansive master suite features sweeping views of East End Avenue and the East River, a gracious master bathroom and a separate dressing room with two large walk-in closets. Three generously sized bedrooms, all with en-suite baths complete the second level. The lower level features a large utility room with a washer, dryer and sink, as well as diret access to 20 East EndÂ’s robust and elegant amenity program that feels like an extension of the home. With a fully equipped fitness center, a spa featuring sauna, steam and private treatment room, a teen arcade, and a luxurious library with adjoining billiards, card and bar rooms, no detail is overlooked.This elegant residence offers one of the last opportunities to own a bespoke home in Robert A.M. SternÂ’s signature building. The taxes of $6,532 ($78,386 yearly) assume full eligibility and proper filing for the 17.5% condominium tax abatement currently available through the New York City Department of Finance. Fully assessed taxes for ineligible owners currently are assessed at $7,917 monthly $95,014 yearly.