10714 Sightline Avenue ONE-OF-A-KIND LUXURY ESTATE IN ASCENSION! Situated on one of the largest and most private homesites within Summerlin's premier guard-gated community, this never-lived-in residence offers an extraordinary blend of sophistication, comfort, and resort-style living. Spanning 4, 703 total square feet, including a fully detached guest house, this semi-custom masterpiece features 5 bedrooms, 6 bathrooms, a private office, and a spacious game room, all enhanced by over $1.5 million in designer-selected upgrades and finishes. Designed to impress and built for entertaining, the backyard is a true private oasis featuring a custom pool and spa, outdoor kitchen, four dramatic fire features, two putting greens, and multiple outdoor gathering spaces that create an unparalleled indoor-outdoor lifestyle. The detached guest house offers complete privacy with its own full kitchen, living room, bedroom, bathroom, and laundry -ideal for guests, multigenerational living, or a private retreat. Positioned on a secluded corner lot with RV parking and a 4-car garage, this exceptional property delivers a level of privacy rarely found in luxury new construction. Residents enjoy exclusive access to Ascension's world-class amenity center, featuring resort-style pools, pickleball courts, a state-of-the-art fitness center, golf simulator, basketball court, and vibrant social spaces. A rare opportunity to own one of the finest homes in one of Summerlin's most sought-after luxury communities.