Welcome to 18 Old English Lane, a remarkable estate designed with vision and craftsmanship, set on a breathtaking 1-acre ravine lot in the prestigious Bayview Glen community. Inspired by the principles of Frank Lloyd Wright, this architectural gem blends seamlessly into its wooded, offering total privacy and serenity on one of the most prestige streets in Thornhill. This expansive residence boasts an elegant circular driveway, resort-style amenities including a stone deck, TENNIS COURT & OUTDOOR POOL, and mature & manicured landscaping that frames the home with natural beauty. Inside, soaring floor-to-ceiling windows flood the grand principal rooms with natural light and offer stunning views of the lush backyard. The spacious family room features a wood-burning fireplace and custom built-ins, wet bar while the library offers a quiet retreat with rich millwork and private access to the primary suite. The chef-inspired kitchen is equipped with premium appliances and a large eat-in area ideal for family gatherings. The luxurious primary suite includes its own private balcony overlooking resort like backyard with swimming pool and tennis court, spa-like ensuite bath, and dual walk-in closets. Upstairs, with a skylight & four additional bedrooms include built-in closets and two semi-ensuite bathrooms, providing comfort and functionality for a growing family. The fully finished lower level with separate entrance/ new flooring is designed for entertaining and relaxation, featuring a large recreation room, 2 bedrooms, a spa zone with cedar sauna, and a powder room. A rare offering in an unbeatable location minutes from Bayview Golf & Country Club, top-rated public and private schools, parks, trails, transit, and highways.