Welcome to 21 Kings Inn Trail, an exceptional executive residence nestled in the prestigious and peaceful Bayview Country Club Estates. Set on one of the largest and most desirable south-facing lots on the street, this home backs directly onto the lush grounds of Bayview Golf & Country Club, offering exceptional privacy and tranquility. The spectacular resort-style backyard is an entertainer's dream, featuring towering mature trees, minimal neighbour exposure, expansive grounds, and a massive saltwater inground pool with cascading waterfall feature. A custom treehouse adds a truly unique touch to this private outdoor oasis. Inside, the bright, turnkey layout showcases hardwood floors throughout and generously proportioned principal rooms. The custom Binns-designed chef's kitchen is beautifully appointed with premium chef-grade appliances, rich granite countertops, and high-quality finishes.The Upper level features four spacious bedrooms, including a generous primary suite with a private 4-piece ensuite and walk-in closet. The fully finished lower level provides exceptional additional living space with pot lights, a large recreation room, and a second kitchen-ideal for an in-law suite, multi-generational living, home gym, or extended family use. Ideally located in a quiet, family-friendly neighbourhood close to parks, transit, and local amenities, with access to Bayview Fairways Public School, Thornlea Secondary School, and St. Robert Catholic High School. A rare opportunity to own a private, resort-inspired property in one of Markham's most sought-after communities.**OPEN HOUSE SAT & SUN 1-3 P.M.**