RARE BIG CORNER LOT WITH AN EXPANSIVE BACKYARD & PRIVATE DRIVEWAY! Welcome to 125 Source, a beautifully designed residence in the highly sought-after Great Park Neighborhoods, offering one of the community's most desirable combinations of a premium corner location and an exceptionally large private backyard-perfect for outdoor entertaining, family gatherings, children at play, or simply enjoying California's year-round indoor-outdoor lifestyle. Ideally situated just moments from the Bosque Trail, Cadence Community Park, award-winning Irvine schools, and the community's extensive parks and greenbelts, this home also enjoys convenient access to the future Botanical Garden and Lakes, as well as the upcoming Canopy shopping center featuring Da Tong Huo Supermarket. Filled with abundant natural light, the thoughtfully designed open-concept floor plan seamlessly connects the gourmet kitchen, dining area, and spacious living room. Expansive sliding glass doors open to the oversized backyard, creating an effortless extension of the living space for entertaining and everyday enjoyment. A desirable first-floor bedroom with a full bathroom provides flexibility for guests or multigenerational living, while a separate powder room adds extra convenience. The second floor features a luxurious primary suite with a spa-inspired bathroom and dual walk-in closets, along with two generously sized secondary bedrooms, each with its own en-suite bathroom for maximum comfort and privacy. The expansive third-floor loft with an additional powder room offers endless possibilities as a media room, home office, fitness studio, playroom, or creative space. Step outside to the oversized private balcony-the perfect place to enjoy morning coffee, unwind in the evening, or entertain guests. With its rare oversized corner lot, expansive backyard, private driveway, versatile three-level floor plan, and exceptional natural light throughout, 125 Source presents a unique opportunity to own one of the most desirable homes in Great Park. Residents enjoy the outstanding Great Park Neighborhoods amenities, including resort-style pools and spas, clubhouses, sports courts, playgrounds, picnic areas, scenic trails, and abundant green spaces, all while being conveniently close to shopping, dining, and major transportation routes.