21W741 Thorndale Avenue Welcome to an exceptional custom luxury residence in Medinah, offering more than 4, 500 square feet of custom-finished living space across three levels, set on a private 0.58-acre lot in an unincorporated area. Thoughtfully designed for everyday living and sophisticated entertaining, this extraordinary home combines high-end finishes, smart-home technology, exceptional craftsmanship, and an impressive array of indoor and outdoor amenities. At the heart of the home is a stunning chef's kitchen featuring premium Thermador appliances, custom cabinetry, sophisticated quartz countertops, two specialized pull-out utility shelves, and a beverage refrigerator. A separate bar area includes a wine/beer refrigerator and cabinetry designed to accommodate essentials. The main level features 10-foot ceilings, hardwood flooring, and a spectacular four-season room with year-round backyard views. Custom indirect, color-changing LED lighting integrated into the crown-molding ceiling creates an inviting atmosphere that's fulfilled with speakers systems in the entire 1st floor. The expansive dining room comfortably accommodates 20+ guests and features wainscoted walls, a custom-designed ceiling, and concealed built-in china storage. A dedicated office showcases custom wall trim, while the bespoke mudroom provides practical organization and laundry.The impressive foyer features two large closets and a separate double-door entry, creating an elegant transition space between living areas. Upstairs, the home offers two luxurious primary suites, providing exceptional flexibility and privacy. The main primary suite features separate his-and-hers closets with custom organizers and a spacious private balcony overlooking the backyard. The spa-inspired primary bathroom includes a separate soaking tub and an oversized shower equipped with a steam system.The second primary bedroom offers a custom walk-in closet, private bathroom, and its own balcony overlooking the front of the property. The third and fourth spacious bedrooms provide additional comfort and privacy and share a beautifully appointed Jack-and-Jill bathroom with made-to-order cabinetry. A conveniently located second-floor laundry room adds everyday functionality.The expansive lower level significantly expands the home's potential living and entertainment space. The walls have been waterproofed, in-floor heating has been installed, and a surround-sound system is already in place. The basement is ready for the new owner to complete according to their vision, whether as a home theater, recreation area, gym, additional bedrooms, or entertainment space. Smart-home technology and premium construction are integrated throughout. Fiber-optic systems and Wi-Fi connectivity throughout the ceilings provide convenient connectivity for mobile devices, gaming systems, televisions, and other technology. Additional features include a whole-house water filtration system, extensive insulation upgrades and well alarm system. The entire house has been insulated with closed-cell spray foam, while ceilings incorporate soundproofing foam to enhance energy efficiency, comfort, and sound control.Parking and storage are exceptional, with an attached two-car garage plus a detached garage accommodating 2+1 vehicles and additional walk-in space on the second floor. A heavy-duty 10-car driveway provides abundant parking for residents and guests. Outside, the bespoke-paved patio is designed for year-round enjoyment and features a durable rubberized roof system with "IceShield" protection.A comprehensive drainage system, septic alarm, sprinkler system, cameras, and security alarm system provide additional functionality and peace of mind. Located in Medinah, a community receiving worldwide attention as the home of the 2026 Presidents Cup, this property presents a rare opportunity to own a truly distinctive custom residence offering luxury, technology, privacy and craftsmanship.