Perfectly positioned on a wide canal in prestigious Copiague Harbor, this impeccably updated expanded ranch offers 100 feet of waterfront and an effortless blend of modern design and coastal sophistication. Spanning approximately 2,200 square feet, the residence unfolds with soaring cathedral ceilings, radiant heated floors, and walls of glass that frame serene water views. The 2019 designer kitchen is appointed with quartz countertops, premium stainless appliances, gas cooking, and a seamless flow into the open-concept living spaces - curated for both intimate evenings and elevated entertaining. The primary suite is a private retreat, featuring tranquil waterfront views and a newly renovated spa bath (2024) with soaking tub, walk-in shower, and refined quartz finishes. Two additional bedrooms and a beautifully updated hall bath complete the thoughtfully designed main level. Outdoors, the property transforms into a private waterfront resort. A heated saltwater pool, expansive decking, pergola with gas grill, and manicured grounds create a true country-club ambiance. The refaced bulkhead and floating dock, complete with water and electric, provide effortless access to the Great South Bay. Additional highlights include a two-car garage, updated roof and mechanicals (2016), Navien on-demand heating system, 200-amp electric, and two-zone central air - delivering both luxury and peace of mind. A rare offering for the discerning waterfront buyer seeking turnkey elegance, boating convenience, and refined coastal living - just moments from marinas, beaches, and parkways. *** This home is in an X flood zone - flood insurance is NOT required ***