An extraordinary deepwater estate offering a rare combination of privacy, craftsmanship, and waterfront living on Hilton Head Island. Set within an exclusive, gated enclave of just five homesites, this exceptional property spans 1.78 acres across two parcels, creating a distinctive estate setting with exceptional privacy. A deepwater dock and boat lift provide effortless access to Broad Creek and the Intracoastal Waterway, connecting you to Harbour Town and other iconic waterfront destinations throughout the Lowcountry. A Woods Dendy Architects design, custom built by H2 Builders with interiors by J. Banks Design, the approximately 8,000-square-foot residence reflects an uncompromising commitment to quality. Reclaimed wood beams, custom millwork, natural stone, rich wood finishes, and hurricane-rated windows and doors distinguish this remarkable home, balancing timeless architecture with modern comfort. Designed for everyday living and exceptional entertaining, the home features a chef's kitchen, climate-controlled wine cellar accommodating more than 600 bottles, private theater, golf simulator, fitness studio, and expansive 7.5-car garage. Whole-home Control4 automation integrates lighting, climate, security, audio, and entertainment. Outdoors, the property lives like a private waterfront resort. An infinity-edge pool with heating and cooling capabilities, outdoor kitchen, fireplace, and multiple gathering spaces create an inviting setting for year-round enjoyment. The main residence sits on approximately 1.2 acres, while the estate also includes an adjacent, vacant 0.58-acre homesite, deeded together and conveyed with the property. This parcel offers potential for a second luxury residence, guest accommodations, or private recreational amenities, subject to applicable approvals. As the only estate within Tidewater Landing offering two homesites, this unique setting provides exceptional privacy and future flexibility. With its substantial acreage, private deepwater access, architectural distinction, and extensive amenities, 90 Tidewater represents an increasingly rare opportunity. An estate of this caliber would be exceptionally difficult to recreate, making this offering as compelling for its long-term appeal as the lifestyle it provides.