Welcome to 104 21st Street in Wading River, where thoughtful updates, a rare double lot, and an unbeatable location come together. Situated on .29 acres with room for future expansion, this move-in ready home features hardwood floors throughout, a bright living room and dining room combination, and a beautifully updated interior. The walk-out lower level offers excellent flexibility with the potential for an accessory apartment with the proper permits, making it ideal for extended living arrangements, guests, or additional living space. Major improvements include a newer electrical service, newer heating system, newer windows, and a roof approximately 10 years young, providing peace of mind for years to come. Outside, enjoy a fully fenced backyard, a paver driveway and patio, and an oversized one-car garage with plenty of storage. Just a short walk to the private beach and scenic nature trails, this exceptional property offers the perfect balance of comfort, outdoor space, and coastal living. With two included lots totaling .29 acres and endless potential, this is a unique opportunity you won't want to miss.