4,000 sq ft on a private 2/3-acre corner lot in Bel-Vue Heights - featuring a massive backyard, a flexible ADU/MIL suite, and room to build equity with a framed unfinished basement. Situated on a peaceful 2/3-acre corner lot in the Bel-Vue Heights neighborhood, this spacious home offers privacy, flexibility, and an ideal Littleton location. The home totals 4,000 square feet, including a 1,000 sq ft unfinished basement and 3,000+ square feet across the main level, MIL suite, and upper level, with hardwood floors throughout and a spacious layout. The attached ADU / MIL suite features hardwood floors, skylights, an en suite bathroom, a private patio, and a separate entrance through the third garage stall-making it ideal for guests, multi-generational living, or rental income. The park-like backyard is truly exceptional-flat, tree-lined, and quiet-offering endless outdoor potential. Upstairs, you'll find four bedrooms, two bathrooms, and two private balconies. The kitchen features hardwood cabinetry and granite countertops, and the three-car garage provides ample storage. The unfinished basement is already framed and includes a brick fireplace-ready for customization and added equity. Bel-Vue Heights is a quiet community close to everyday amenities. The neighborhood backs to the High Line Canal Trail, offering a short walk to the secluded Horseshoe Park. With quick access to downtown Littleton, shopping, and multiple parks and trails, this location balances convenience and privacy.