Welcome to 8020 Arrow Lane in the sought-after Farmingdale neighborhood of Darien, Illinois - "A Nice Place to Live!" This rare, oversized split-level with sub-basement QUAD level home is tucked away in a quiet cul-de-sac and offers 5 bedrooms, 2.5 bathrooms, and an abundance of space across four levels - a truly unique find! From the moment you arrive, you're welcomed by professional landscaping and a long, private driveway, perfect for multiple vehicles. Enjoy your fully fenced-in backyard with a newer 6-ft privacy fence, freshly stained for added appeal. Inside, the main level boasts a spacious living room, formal dining area, and an open-concept kitchen/dining combo - ideal for entertaining. Upstairs, a wide hallway leads to four generously sized bedrooms and two updated full bathrooms, including a private en suite in the primary suite with a beautiful walk-in shower. The lower level English basement offers even more living space - featuring a fifth bedroom with a built-in safe, a half bath, and a laundry/mudroom. Gather around the cozy fireplace in this inviting family area - perfect for hosting. But that's not all! There's an unfinished sub-basement offering tons of potential for additional living space, storage, or a custom build-out. It also houses the furnace, sump pump, ejector pump, and a whole-house water filtration system - all contributing to a rock-solid home. Majority of the windows were replaced in 2022, adding comfort and efficiency to this well-maintained home. With easy access to I-55 and Route 83, you're never far from everything you need. This is a rare opportunity to own a spacious and well-appointed home in a fantastic location. Don't miss it - homes like this don't come around often!