Nestled warmly on a breathtaking ravine-view lot in the exclusive gated Enclave of Upper Thornhill Estates, 140 Lady Jessica Drive is a truly special 4-bedroom, 6-bathroom custom-built gem offering over 6,615 sq ft of elegant living space (plus a beautifully finished basement) and more than $300,000 in high-end upgrades. Picture enlarged windows that fill every room with warm natural light, upgraded hardwood floors and stairs that feel luxurious underfoot, custom-built French-style paneling on all walls, coffered ceilings, bespoke background walls, custom built-in organizers in all WICs, full front and back interlock, and professional landscaping that keeps the property looking picture-perfect all-year-round. Inside, you'll love the soaring 19-ft ceiling in the grand first-floor library, 10-ft ceilings on the main and second floors, 9-ft ceilings in the basement, a dream gourmet kitchen with a grand island and top-of-the-line Sub-Zero/Wolf appliances, DUAL furnaces and ERV systems for year-round comfort, and a peaceful west-facing backyard overlooking the serene Maple Reserve Trail forest-complete with a charming custom gazebo and lush, inviting grounds perfect for relaxing or hosting unforgettable gatherings. Nestled in the heart of Patterson, you're just moments from outstanding private and public schools, brand new Carrville Community Centre, fantastic shopping, Rutherford and Maple GO stations take you directly DT, and easy highway access-making this the ideal place to create beautiful memories with family and friends. This warm, welcoming home is ready to become your forever favourite!