Exquisitely redesigned and renovated in 2020, this classic residence in prestigious Lytton Park offers elegant living spaces, refined architectural details, and exceptional family functionality. Set on a rare south-facing 52-foot frontage lot, this thoughtfully curated three-storey home showcases approximately 2,818 sq.ft. above grade plus a beautifully 930 sq.ft. lower level, blending timeless charm with sophisticated modern design and low-maintenance turnkey living.The expansive open-concept main floor features striking floating stairs, a formal living room, a bright dining room, ground floor addition with a cozy office walk-out to the landscaped backyard, and a chef-inspired kitchen appointed with premium Sub-Zero and Wolf appliances - perfectly designed for both entertaining and everyday family living. Each spacious bedroom enjoys the privacy of its own ensuite, including a luxurious primary retreat. The third level offers a versatile fourth bedroom, bright and spacious family room featuring skylights that flood the space with abundant natural light, and walk-out to a private rooftop terrace with picturesque Lawrence Park skyline views.The fully finished lower level includes a separate entrance, fifth bedroom, wine cellar, 3-piece bath, oversized laundry room, and potential for a second kitchen, offering exceptional flexibility for extended family living. Professionally landscaped front and rear gardens with easy-care outdoor spaces, along with private driveway and garage parking.Ideally located near the boutiques and cafés of Avenue Road, surrounded by the natural beauty of Chatsworth Ravine and Sherwood Park, and moments from Toronto's most prestigious public and private schools including John Ross Robertson Junior School, Lawrence Park CI, Havergal College, Toronto French School, Upper Canada College, and Crescent School, 15 Strathallan Boulevard is an exceptional opportunity to own in one of Toronto's most coveted neighbourhoods.