4221 MYRTLE Street Custom Intracoastal Estate with Guest House, Covered Boathouse & Dual Boat Lifts! Experience waterfront living at its finest in this custom-built Intracoastal estate located in Vilano Beach. Built in 2023 and thoughtfully designed for both everyday living and entertaining, this exceptional property offers approximately 4, 056 square feet of heated and cooled living space, including a detached guest suite, and over 6, 700 square feet under roof. Situated on a deep-water Intracoastal lot with direct ocean access, the property features a covered boathouse, two boat lifts (13, 000 lb. and 7, 500 lb.), a private dock, and breathtaking panoramic water views from nearly every room. Watch dolphins play, enjoy spectacular sunsets, and experience the boating lifestyle that makes St. Augustine one of Florida's most desirable waterfront destinations. The main residence offers 4 bedrooms, 3.5 bathrooms, a dedicated office, spacious bonus room, and an open-concept floor plan centered around a designer kitchen featuring premium appliances, custom cabinetry, an oversized island, walk-in pantry, and expansive water views. The first-floor owner's suite provides a private retreat with a spa-inspired bath, oversized walk-in closet, and direct access to the waterfront backyard. Upstairs, guests will enjoy additional bedrooms, multiple gathering spaces, and expansive covered porches designed to capture the coastal breeze and endless Intracoastal views. A detached oversized two-car garage includes a fully finished guest suite above with its own bedroom, bathroom, living area, and entertaining space, making it ideal for extended family, guests, a home office, or private retreat. Additional highlights include metal roofing, impact-rated windows and doors, covered front and rear porches, beautifully maintained grounds, generous parking, and a rare combination of privacy, deep-water access, and modern construction. Located just minutes from historic downtown St. Augustine, area beaches, dining, shopping, and world-class fishing, this is a rare opportunity to own a turnkey waterfront estate with room for family, guests, and all of your toys.