Welcome to this stunning upgraded home in Sierra Del Oro, situated on the bluffs of the majestic Santa Ana Mountains. With unobstructed 180-degree views of city lights and the serene mountain landscape, this two-story masterpiece offers a unique blend of luxury and comfort. As you step inside, you're greeted by soaring high ceilings and stacked windows that flood the home with natural light and provide breathtaking views from every angle. The living and dining rooms exude elegance, with accent walls featuring chair railings, fresh interior paint, and waterproof LVT flooring that complements the new, 15-year warrantied carpet. The new kitchen is a chef's dream, boasting Shaker-style doors and drawers, sleek Gibraltar countertops, a custom wine rack, and stainless-steel appliances—flowing seamlessly into the inviting family room, where a refaced fireplace, custom entertainment center, and shiplap-accented walls create a cozy yet sophisticated ambiance. The home's thoughtful design continues with a flexible bedroom on the main floor, accompanied by a freshly remodeled bathroom. Upstairs, the primary bedroom is a true sanctuary, featuring double door entry, high-volume ceilings, a relaxing lounge area, and an expansive walk-in closet. Enjoy panoramic views of city lights and fireworks displays from the primary bedroom's large windows. The remodeled primary bathroom offers a luxurious escape with a separate tub and a walk-in shower. The secondary bedrooms are equally impressive, with direct access to a newly renovated bathroom, and Bedroom 4 stands out with its generous size and walk-in closet. Step outside to the private backyard, where you'll find no rear neighbors and spectacular views of the entire Cucamonga Valley. The outdoor space is perfect for entertaining, with recently installed synthetic grass, durable cinder block fences, and the tranquility of wide-open skies. Additional amenities include solar panels with battery backup, an upgraded heating and air system, a whole-house fan, a garage with ample built-in storage, and a freshly painted exterior. Plus, there is no homeowner's association or Mello Roos. The home's location offers seamless accessibility to Orange County's vibrant offerings and the nearby expansive tracts of preserved open space, including the famed Skyline trails. The possibilities for exploration and adventure are endless, with major transportation arteries nearby, including the 91 freeway and Fastrak, 241 toll road, and Metrolink.