Luxury 4-bedroom, 4-bath executive home with main floor office, approx. 3,267 sq ft, lovingly maintained by the original owner and set on one of Cathedral Town's largest premium lots approx. 50 ft x 182. This rare property offers an exceptional combination of scale, natural light, and high-end finishes in a prime Markham location. Premium hardwood floors flow throughout the main and second levels, with upgraded tiles in the foyer and kitchen. The main floor features a spacious, sun-filled office, generous principal rooms with abundant windows, and an open, airy layout ideal for both elegant entertaining and everyday family living. The gourmet, open-concept kitchen showcases a large breakfast island with quartz countertops, Miele cooktop, built-in microwave and oven, dishwasher, pantry with wine fridge, and a bright breakfast area. The expansive family room, overlooking the professionally landscaped backyard garden and featuring a gas fireplace, creates a warm and inviting gathering space. Oak staircase with wrought iron spindles, Main floor laundry with direct backyard access adds daily convenience. The second level offers an ideal luxury layout: a grand primary retreat with 5-piece ensuite, second and third bedrooms sharing a stylish 5-piece Jack-and-Jill bath, and a fourth bedroom with its own ensuite. All bedrooms feature large walk-in closets, upgraded lighting, and pot lights, maximizing comfort and functionality. A full basement and double car garage provide abundant storage and future customization potential. Professional landscaping front and back enhances curb appeal and outdoor enjoyment. Located in the heart of Markham, steps to schools, minutes to shopping, banks, the new Tesla store, and with easy access to Hwy 404, Oversized premium lot offers potential for a future coach house, subject to City of Markham zoning and building permit approvals.