No HOA. No Mello Roos... Just Pure Luxury in Rancho Cucamongas Masterpiece Collection. Welcome to 12575 Carmel Knolls Drivean exceptional 5 bedroom, 4.5 bathroom estate offering over 4,100 sq ft of refined living space nestled in the foothills with mountain and city views. Step through double leaded glass doors into a grand formal living room with a cozy fireplace and soaring ceilings. The open layout flows seamlessly into a spacious family room with a second fireplace and custom built ins, and a gourmet kitchen featuring Wolf appliances, a large island, walk in pantry, and eat in dining area. This home is designed for multi generational living, with two primary upstairs plus one bedroom with 3/4 bath downstairs. Upstairs, a custom library with built in bookcases and a computer center adds a touch of elegance and function. Retreat to the upstairs primary suite with a fireplace, and a spa like ensuite, walk in closet, and private balcony. All bedrooms include walk in closets with organizers. Additional upgrades include travertine flooring, crown molding, new windows, fresh paint, and a 2018 HVAC system. Outside, enjoy a tastefully landscaped yard, two covered patios, and a built in BBQ islandperfect for entertaining. The four car garage and extra wide driveway complete this dream home.