Beautiful two-story horse property tucked away in the highly desirable and peaceful Sun Valley neighborhood of Rancho Cucamonga, offering an impressive blend of privacy, space, versatility, and resort-style living. You'll find a long driveway, mature landscaping, and beautiful mountain surroundings that create an estate-like arrival. Inside, you will find a grand curved staircase, elegant architectural details, crown molding, abundant natural light, and an open floor plan connecting the spacious living and family rooms. A fireplace in the living room creates a warm and inviting focal point, while the beautifully appointed kitchen features an oversized center island, extensive cabinetry, generous counter space, and an open connection to the main living areas. The main level includes a full bedroom and bathroom, providing excellent flexibility for guests, extended stays, a private office, or additional living space, along with a separate laundry room. Upstairs, the spacious primary suite feels like a private retreat, featuring its own fireplace, full bathroom, and direct access to a private balcony. A versatile loft opens onto an additional balcony overlooking the surrounding landscape, while the additional bedrooms offer generous space and abundant natural light. The backyard is where this property truly stands apart. Enjoy a resort-style pool and spa with a waterslide, multiple areas for outdoor entertaining, a covered recreation space, built-in outdoor cooking area, and the convenience of a full outdoor bathroom. Complete with a four-car garage and extended driveway offering abundant parking and storage. All of this is set in a prime foothill location with convenient access to SR-210 and connections to I-15, near Vineyard Junior High, Los Osos High School, and Chaffey College. Outdoor enthusiasts can enjoy nearby Heritage Community Park and Rancho Cucamonga's extensive foothill trail system, including North Etiwanda Preserve, while shopping, dining, entertainment, and community events are within convenient reach at Victoria Gardens. A rare opportunity to enjoy a peaceful, estate-style setting while remaining connected to some of Rancho Cucamonga's most popular amenities. Welcome to your new home!