Welcome to 1535 Summitridge Dr in the exclusive Diamond Bar Hills. This 4-bed, 3-bath home offers 2,303 sq ft of stylish living space on an 8,542 sq ft lot with stunning 180° mountain views. Located on a quiet cul-de-sac, the home features wood floors, soaring ceilings, and abundant natural light. Also walking distance from Quail Elementary School. The main floor includes a formal living room, dining area, open family room with fireplace, and a spacious kitchen, plus a bedroom and full bath perfect for guests or a home office. Upstairs, the primary suite offers a private balcony, spa-like bath, and walk-in closet, with two additional bedrooms and another full bath nearby. Enjoy tranquil outdoor living with panoramic views and mature landscaping. A 3-car garage and great curb appeal complete the package. Just a short walk to Quail Summit Elementary, Summit Ridge Park, and the Diamond Bar Center. Convenient to shops, dining, and the 57, 60, and 71 freeways. A rare find in a highly desirable neighborhood.