Welcome to 1135 Summitridge Drive, a magnificent two-story estate nestled within the prestigious Diamond Bar Hills community. Meticulously updated with a series of thoughtful enhancements, this exceptional residence is beautifully prepared to re-enter the market. Improvements include the installation of brand-new hardwood flooring, resurfacing of the pool plaster, and restoration of the balcony, among other upgrades. This exquisite home boasts five spacious bedrooms and three bathrooms, offering the perfect blend of sophistication, comfort, and functionality. Step into the grand formal entryway, where soaring ceilings and gleaming marble flooring set an elegant tone. The expansive living area, adorned with rich hardwood floors, seamlessly flows into the gourmet kitchen, featuring a marble island with built-in stoves, a cozy breakfast nook, ample cabinetry, a pantry, and an adjacent dining area with a ceiling fan. The inviting family room is an entertainer’s dream, complete with a home bar, a cozy fireplace, and sliding glass doors that open to a serene backyard retreat. On the main level, you’ll also find a guest bedroom, a full bathroom with a shower, a laundry room, and direct access to the three-car garage. Ascend the staircase to discover the lavish primary suite, a true sanctuary featuring a private office space, a spa-like ensuite bathroom with a deep soaking tub, dual vanities, a separate shower, and a private balcony—perfect for enjoying breathtaking treetop and mountain views. Down the hallway, three additional generously sized bedrooms with hardwood flooring share a beautifully appointed full bathroom. The front of the property showcases a sparkling pool and jacuzzi, while the backyard oasis offers a tranquil, trail-like setting ideal for both lively gatherings and peaceful retreats. The property features a solar power system to enhance energy efficiency and support eco-friendly practices. Located in an award-winning California Distinguished/Blue Ribbon school district, this exceptional home offers a harmonious balance of luxury and convenience—just moments from the Civic Center, Walmart, and an array of fine dining options. Experience secluded, nature-inspired living with effortless access to urban amenities in this remarkable Diamond Bar estate.