A lot like this simply doesn't come up in Kleinburg Heritage Estates. Set on an extraordinary 13,627 sq. ft. pie-shaped lot, the largest on Annsleywood Court and nearly double the size of typical lots on the court, 10 Annsleywood offers a level of space and privacy that sets it apart from every other home around it. At the end of a quiet cul-de-sac sits Rosehaven's largest Platinum Collection residence, offering 5,266 sq. ft. across the main and second floors, and over 7,000 sq. ft. of total finished living space including the expansive walkout lower level. Meticulously maintained by its original owners, the home was elevated beyond builder standards with oversized baseboards, widened trim, upgraded foyer flooring and premium textured hardwood. Impressive 10 ft. and 14 ft. ceilings, integrated surround sound and elegant architectural detailing enhance the scale and character of the interior. At the heart of the home, the chef's kitchen features Wolf and Sub-Zero appliances, custom cabinetry, a built-in refrigerator, oven and steam oven, centre island with microwave, and wine cooler. The primary suite is a true private retreat, featuring coffered ceilings with integrated sound, expansive windows, a sitting lounge, French doors and a beverage station. The spa-inspired ensuite is centred around a freestanding tub beneath triple windows, complemented by dual vanities, a glass shower, heated floors and a massive walk-in closet. The finished walkout lower level extends the living space with a media room, exercise area, full bathroom, custom wine cellar and an impressive 600 sq. ft. recreation area with direct patio access and potential for a fifth bedroom.Outside, professional landscaping complements the expansive property, with an interlock stone patio, premium stonework and natural rock accents. An exceptionally rare Kleinburg offering combining Rosehaven Platinum Collection craftsmanship, over 7,000 sq. ft. of finished space and the largest lot on Annsleywood Court.