6378 East Welcome to a truly one-of-a-kind estate in the highly sought-after foothills of North Rancho Cucamonga, just above the 210 freeway, offering beautiful mountain views, privacy, and exceptional versatility on an expansive 20, 000+ sq ft lot. This unique property functions as a private compound with multiple living spaces–perfect for multi-generational living, rental income, or extended guest accommodations. As you enter the main residence approx. 1984 sq ft, 3 bedrooms, 2 bathrooms, you are greeted by high ceilings that create an open, airy feel and elevate the overall living experience. The spacious living room features a cozy Appalachian wood-burning fireplace, adding warmth and character, along with direct access to the courtyard for seamless indoor-outdoor living. The upgraded kitchen is the heart of the home, showcasing custom wood cabinetry, granite countertops, a large island, and a premium Viking 6-burner range, ideal for both everyday living and entertaining. Bathrooms feature elegant stone and tile finishes, including a spa-style shower with multiple showerheads. This property truly stands out with its additional living spaces: Permitted ADU Approx. 809 sq ft – Recently built approx. 3 years ago, offering 2 bedrooms and 1 bathroom, ideal for rental income or extended family. Studio Unit Approx. 482 sq ft – Includes a kitchenette & bathroom, perfect for guests, office, or additional income. and the studio has a Basement with currently used for storage, right now is covered – Adds extra functional space. The ADU can be connected to the main house if desired by removing an existing soundproof wall, offering flexibility to create one expansive residence. Step through the gated entrance into a beautifully designed private courtyard, perfect for entertaining, featuring a built-in outdoor kitchen with BBQ, Jacuzzi with a rock design fountain, decorative tile flooring, and custom ironwork details. The backyard offers a large open space with artificial turf, ideal for gatherings, play, or customization. The grounds are enhanced with vineyard-style landscaping, mature plants, and garden areas, creating a peaceful and inviting setting Additional features include: 3-car tandem garage. Gated entry for added privacy. Expansive lot with potential for further use. Desirable foothill location with scenic mountain views. Some photos have been virtually staged for illustrative purposes.