Set within the prestigious waterfront community of St. Charles Harbour, this exceptional custom estate is among the newest residences in the neighborhood, offering timeless architecture paired with today's highest construction standards. Expertly crafted by renowned Harbourside Custom Homes, every detail reflects exceptional quality, thoughtful design, and enduring craftsmanship. A stately solid mahogany entry door opens to interiors defined by soaring 12- to 14-foot ceilings, custom beam detailing, and abundant natural light. A sophisticated palette and seamless indoor-outdoor flow create an atmosphere that is both refined and effortlessly livable. The thoughtfully designed split floor plan features five spacious en-suite bedrooms, a private executive office, and five-and-a-half beautifully appointed baths, providing exceptional privacy for family and guests alike. At the heart of the home, the chef's kitchen showcases premium Thermador appliances, custom cabinetry, an expansive island, and a butler's pantry. It flows seamlessly into the grand living spaces, where custom built-ins and dramatic ceiling details create an inviting setting for everyday living and elegant entertaining. The owner's suite is a private retreat overlooking the preserve, complete with a spacious sitting area, dual oversized walk-in closets, and a spa-inspired bath. Four additional guest suites each feature luxurious en-suite baths. Designed for effortless Florida living, the expansive screened lanai frames uninterrupted preserve views through a picture-window screen enclosure. A resort-style pool and spa anchor the outdoor living space, while plumbing is already in place for a future summer kitchen. Additional features include impact-resistant windows and doors, whole-house Kinetico water filtration and softening, commercial-grade Wi-Fi, perimeter security cameras, generator pre-wiring with dual 50-amp direct-plug connections, and an oversized three-car garage with a 28-foot-deep bay. Residents of St. Charles Harbour enjoy an active private Yacht Club, a popular waterfront restaurant, and the opportunity to purchase or lease deep-water marina slips with direct Gulf of Mexico and Intracoastal Waterway access, placing world-class boating, fishing, and island destinations just moments away. Built to the latest elevation requirements and modern construction standards, this exceptional residence offers luxury, privacy, and an unmatched coastal lifestyle in one of Southwest Florida's most coveted waterfront communities.