Welcome to 24557 Rosette Lane - a rare dual-living opportunity tucked away at the end of a quiet cul-de-sac inside the highly sought-after gated West Hills community in Valencia. Designed with flexibility and privacy in mind, this beautifully appointed home features a highly desirable attached mother-in-law suite with its own private entrance, creating the perfect setup for multigenerational living, long-term guests, a home business, or added independence for extended family. Complete with its own living room, kitchenette, bedroom with walk-in closet, bathroom, laundry, and separate entrance, this space offers a level of versatility that is hard to find. Inside the main residence, the open-concept layout was designed for both comfortable everyday living and effortless entertaining. The spacious family room with fireplace flows seamlessly into the oversized kitchen featuring a large center island, walk-in pantry, abundant storage, stainless double ovens, and generous dining space. Upstairs, the home continues to impress with a large loft, dedicated office area, spacious secondary bedrooms, upstairs laundry room, and a beautifully designed primary suite complete with a soaking tub, walk-in shower, and oversized walk-in closet. Step outside to your private backyard retreat featuring a pool, spa, sitting area, turf, and dog run - perfect for relaxing, entertaining, and enjoying Southern California living year-round. Additional highlights include paid-off solar, a 3-car garage with epoxy floors and overhead storage, attractive landscaping, and access to West Hills' incredible resort-style amenities including pools, scenic paseos, hiking trails, outdoor cooking areas, playgrounds, greenbelts, clubhouse, spa, and dog park. Located near award-winning schools, shopping, dining, and parks, this exceptional home offers the perfect blend of functionality, comfort, and lifestyle.