428 Marbleton Circle Welcome home to this spacious 4-bedroom, 3-bath ranch in O'Fallon, IL, offering approximately 3, 400 square feet of finished living space, a finished walk-out basement, and a large fenced backyard-all in a convenient location near Scott Air Force Base, Interstate 64, and Downtown O'Fallon. Step inside to a bright, open great room where vaulted ceilings, beautiful hardwood floors, and a gas fireplace create a warm and inviting place to gather. The kitchen and dining area flow right into the main living space, making the layout perfect for both everyday life and entertaining. Need a home office? The flexible bonus room is currently set up as one but could easily become a formal dining room, playroom, or whatever fits your lifestyle. The split-bedroom floor plan gives the primary suite its own private retreat, complete with a tray ceiling, spacious walk-in closet, and ensuite bath featuring a double vanity, walk-in shower, and deep whirlpool tub. Two additional bedrooms, another full bath with linen storage, and a dedicated laundry room round out the main level. Downstairs, the finished walk-out basement adds even more room to spread out. A huge recreation and family room offers plenty of possibilities, while the fourth bedroom and full bathroom make this level a great option for guests, multigenerational living, or a private home office or hobby space. Outside, enjoy a large deck overlooking the sprawling fenced backyard with plenty of room for entertaining, pets, play, gardening, or simply relaxing at the end of the day. Recent updates include a new roof, downspouts, partial siding, and fascia in 2025, along with a new sliding door in the bonus room. With easy access to Scott Air Force Base, I-64, Downtown O'Fallon, shopping, dining, and everyday conveniences, this home offers the space you've been looking for in a location that keeps you connected. The home has already passed the O'Fallon occupancy inspection and is move-in ready. Schedule your private showing today!