5 BED+LOFT EXECUTIVE HOME | PANORAMIC MOUNTAIN+VALLEY VIEWS | 4 CAR GARAGE | GATED | Welcome to the epitome of luxury living in the prestigious community of Sierra Peak, nestled in the coveted Sierra Del Oro, the gateway to Orange County. This executive estate exudes elegance and sophistication, offering unparalleled privacy and breathtaking natural beauty against the backdrop of the majestic mountains. Step through double doors and you are greeted by luxury, with soaring ceilings, gorgeous polished travertine flooring & a grand staircase inviting you to explore further. An abundance of windows fills the home with radiant natural light & showcases the breathtaking panoramic views of the Cleveland National Forest, Chino Hills State Park, and the snow-capped peaks of Mount Baldy. Entertain in style in the living room & dining room, where a warmly inviting fireplace adds a touch of elegance to every gathering. The Family Room has a 2nd fireplace and seamlessly connects to the chef's kitchen, creating open-concept space for living & entertaining. Granite countertops, stainless steel appliances, walk-in pantry, breakfast bar, and spacious island beckon the chef; an adjacent dining area offers more seating with stunning backyard views. This exceptional home includes a downstairs bedroom/bathroom. Upstairs the Primary Suite includes a private sitting retreat, a sprawling balcony overlooking the mountains, and a luxurious ensuite bathroom with dual sinks, deep soaking tub, walk-in shower & oversized walk-in closet. Upstairs also includes a 2nd master bedroom with ensuite bathroom, additional bedrooms/bathrooms and a loft with double balconies for relaxation and recreation. OUTDOORS: Step outside into your private oasis, where true California living awaits. A gazebo with gas fireplace, BBQ island with bar top seating, and a sprawling custom gas firepit seats 30 for unforgettable outdoor gatherings. Lush landscaping, fruit trees, and manicured grounds provide serenity, while panoramic views of the surrounding mountains and valleys serve as a breathtaking backdrop. PARKING: 4-car garage, ample driveway space, & plenty of private-street parking. ENERGY EFFICIENCY: Fully paid solar, 2 EV chargers, plantation blinds, dual-pane windows, whole house fan. OTHER FEATURES: Water softener system & gutter system. COMMUTING: Just minutes from 91 Expressway, 241 Toll, 55, 71, 15, 60. This exceptional property offers the ultimate blend of luxury, privacy, and convenience.