90 Belvedere Drive First time on the market in over 20 years, this exceptional custom-designed 4-bedroom residence is perfectly situated on a quiet cul-de-sac in the highly sought-after Oyster Bay Cove, within the Syosset School District. Set on 2 acres of beautifully rolling property, this home offers the ultimate blend of privacy, luxury, and lifestyle. Designed for both everyday living and entertaining, the home features an open and airy floor plan with a spacious living room, formal dining room, and an expansive great room. A striking double-sided fireplace seamlessly connects the living room and family room, each offering direct access to the rear stone patio complete with a firepit for year-round enjoyment. Outdoor amenities are truly unparalleled, featuring a Gunite saltwater pool and a private tennis court, creating your own resort-style retreat. The second-floor primary suite is a private sanctuary, boasting approximately 1, 000 square feet of space, offering comfort and flexibility. Additional highlights include three cedar closets, a fully finished lower level with approximately 1, 500 square feet of additional living space, and an attached 3-car garage equipped with an electric car charger. With gas heating, a full-house generator, and thoughtfully designed details throughout, this home delivers both convenience and peace of mind. A rare opportunity to own a one-of-a-kind property in a premier North Shore location-this is the lifestyle you've been waiting for.