Welcome to 3992 William Street, a charming expanded Cape nestled in the heart of Seaford. This warm and inviting 4-bedroom, 2-full-bath home is filled with tremendous natural daylight and offers a spacious, comfortable layout perfect for everyday living and entertaining. The first floor features a large formal dining room highlighted by a cozy wood-burning fireplace, creating the perfect setting for gatherings and holiday meals. The spacious eat-in kitchen offers plenty of room for cooking and includes space for a breakfast table, ideal for casual mornings. A bright, sunny living room provides ample space to relax or host guests. This thoughtfully expanded Cape also includes a bonus room and separate office space, ideal for today's work-from-home lifestyle, guest space, or additional living area. Large sliding glass doors lead to a beautifully landscaped backyard and garden, offering a peaceful outdoor retreat with space for entertaining, outdoor dining, and summer barbecues. This property includes an unfinished basement offering additional storage. Located on Long Island's desirable South Shore, this home combines charm, natural light, and functional living space in a sought-after neighborhood close to parks, shopping, dining, and convenient transportation.