Situated on a premium lot within the highly sought-after Quail Hill community, this exceptional Sienna residence by Standard Pacific Homes blends timeless elegance with refined contemporary living. Showcasing the coveted "Sienna Plan 3" layout, 114 Mosaic welcomes guests through a private gated courtyard leading into a dramatic two-story entry into sophisticated formal living and dining spaces designed for both grand entertaining and everyday comfort. At the heart of the home, the beautifully reimagined chef's kitchen is a true showpiece, featuring new oak cabinetry, stunning quartz countertops and backsplash, a six-burner gas range, and an expansive open-concept design that seamlessly connects to the home's inviting gathering spaces. A private main-level guest casita and tranquil interior courtyard with fountain create a rare sense of flexibility, privacy, and serenity. Upstairs, the expansive primary suite serves as a luxurious retreat, complete with a private balcony and spa-inspired bath featuring a soaking tub, oversized walk-in shower, dual vanities, and generous walk-in closet space. Three additional upstairs bedrooms offer comfort and versatility for family or guests. The resort-inspired backyard is equally impressive, thoughtfully designed for year-round enjoyment with lush landscaping, mature palms, manicured lawn areas, elegant split-face stone accents, multiple seating and entertaining spaces, and inviting indoor and outdoor fireplaces that create an unforgettable ambiance day or night. Residents of Quail Hill enjoy access to an exceptional lifestyle with multiple parks, pools, playgrounds, fitness and sports amenities, scenic hiking and biking trails, and close proximity to Valley View Park. Ideally located within the award-winning Irvine Unified School District, including Alderwood Elementary and University High School, and just moments from upscale shopping, fine dining, coastal beaches, and major freeways, this remarkable residence offers the perfect blend of luxury, comfort, and Southern California living.