Welcome to 6413 County Line Road-an extraordinary new construction estate set on a full acre along Burr Ridge's prestigious Millionaires Row. Masterfully designed with timeless architecture and best-in-class finishes, this home offers a rare blend of luxury, comfort, and craftsmanship. The exterior makes an immediate statement, wrapped entirely in natural stone and limestone with a terracotta clay tile roof and Marvin windows throughout. Natural cobblestone pavers lead to a grand entrance framed by bluestone steps and manicured landscaping. Inside, you're welcomed by radiant-heated white Thassos marble floors with black inlays, soaring ceilings, and exquisite millwork throughout. The chef's kitchen is outfitted with Sub-Zero, Wolf, Thermador, and Bosch appliances, marble countertops with full slab backsplash, and custom cabinetry in a mix of painted, glazed, and stained finishes. A second full kitchen on the lower level adds exceptional functionality. Each bedroom is a private suite with its own balcony, while the primary bathrooms are outfitted in floor-to-ceiling marble with digital Kohler and Grohe fixtures and radiant heat. Throughout the home, 5" white oak flooring adds warmth, and four custom staircases with hand-forged wrought iron offer both elegance and flow. The lower level is designed for entertaining and wellness, featuring a full bar, state-of-the-art theater, sauna, steam room, and a custom three-level elevator. Located near top-rated schools, country clubs, Hinsdale Hospital, and just minutes from downtown Hinsdale and Burr Ridge, this home delivers unmatched quality in one of Chicagoland's most coveted locations.