Welcome to 3186 William Street in the highly desirable Brookside Estates section of Wantagh. This beautifully renovated 4-bedroom, 2-bathroom Hamptons-style Coastal Colonial offers 2,466 square feet of expansive living space across a quarter acre of corner property - the perfect retreat for relaxation, entertaining, and comfort. Beautiful new white oak and red oak floors throughout. The sunlit living room features vaulted ceilings, oversized windows, ceiling fan, a wood-burning fireplace, and sliding doors to the deck. Enjoy the convenience of a first-floor bathroom with a shower and a spacious dining room for gatherings. The updated eat-in kitchen is a chef's dream with sweeping Calcutta Gold quartz countertops and backsplash, plenty of cabinet space, and stainless steel appliances, including a gas range oven, dishwasher, and Monogram glass-door refrigerator. An adjacent breakfast nook area offers extra seating for comfort. The multi-seasonal sunroom provides more natural light and outdoor views. Upstairs features three bedrooms and a fourth bedroom with the possibility of a loft, family room, home office, or play area. Skylights and electric windows throughout. The second floor also features a second full bathroom with a whirlpool jetted tub and steam shower, as well as a moisture-resistant cedar wood sauna for a tranquil indoor spa space. Enjoy the ultimate backyard oasis with a lit deck, 10-foot deep heated in-ground pool with a new diving board, paved patio, arborvitae for privacy, and a terrace for quiet reading and BBQs. Plenty of storage space above the two-car garage and a cabana for pool equipment. Incredible potential with the full, unfinished basement for a gym or additional storage. Additional highlights include in-ground sprinklers with seven zones, new double-hung windows, new garage door, central AC on the second floor, and plenty of closet space throughout. Ideally located near popular restaurants, shopping, parks, major parkways, beaches, and within walking distance of the LIRR. Don't miss out on the rare opportunity to own this elegant, expansive Hamptons-style home in Wantagh. Schedule a private showing at 3186 William Street today!