Rare custom home on 1-acre in private, gated Waterstone Estates community with new roof + new upstairs AC unit. Inside, hand-scraped solid hardwood floors anchor a thoughtfully designed main level. A dedicated home office + 1st floor primary suite create a floor plan that is both practical + refined. The primary suite is a true sanctuary, crowned by a vaulted groin ceiling-a striking architectural detail rarely found in modern construction. Wrapped in Italian Carrara marble, the spa-inspired bath features an oversized vanity, expansive dbl shower, + a quiet elegance that invites you to linger. Also on the main level are a spacious utility room with mud area, powder bath, + an EF5-rated Family Safe storm shelter. Upstairs, two additional bedrooms and a generous second living area provide flexibility for family and guests. An approximately 400 SF climate-controlled flex space with a private entrance is ideal as a studio, executive office, fitness room, or private retreat. Outside, the backyard is a rare blank canvas. Framed by mature trees and established landscaping, it offers remarkable privacy and endless possibilities. Envision a resort-style pool, elegant fire feature, cabana, or sophisticated outdoor living space in a tranquil setting that makes this property so distinctive. Despite its remarkable seclusion, this estate is minutes from Historic Downtown McKinney, Melissa H-E-B, Highway 75, the Sam Rayburn Tollway, and McKinney National Airport-offering the rare balance of privacy without isolation.