MUST SEE!Welcome to 980 Afton Road, a stately Colonial estate designed by acclaimed architect Harold J. Bissner. Nestled on a tranquil, tree-lined street in one of San Marino's most coveted neighborhoods, this exceptional residence is offered on the market for the first time in over 55 years. The home perfectly balances architectural heritage with a relaxed, modern indoor-outdoor lifestyle.The thoughtfully designed main level is engineered for gracious entertaining and effortless everyday living. Gleaming hardwood floors and expansive picture windows bathe the interiors in natural light while framing views of the lush grounds. The sophisticated floor plan flows seamlessly from the elegant living room, anchored by a classic fireplace, into a handsome library and a large, inviting den--both offering direct access to a beautiful covered patio. A bright, well-positioned kitchen connects to a generous, light-filled formal dining room. A convenient powder room, laundry room, and a California basement providing ample extra storage complete the main level.Upstairs, pristine hardwood floors continue across four expansive bedrooms, three full bathrooms, and a versatile study that easily serves as a fifth bedroom. Two of the bedrooms open directly onto a sweeping balcony, offering a private vantage point to unwind under the stars or enjoy a good book outdoors.Set on an expansive, flat 14,176 square foot lot, the property forms a private oasis tailored for recreation and leisure. The spectacular backyard is an entertainer's dream, featuring a sparkling pool, manicured landscaping, mature fruit trees, and a large grass lawn. Completing this exceptional estate is a detached three-car garage with a fully independent 658+/- square foot guest house above, providing excellent flexibility with its own bedroom, spacious living room, full kitchen, bathroom, and abundant storage. Experience a rare combination of historic prestige, seamless indoor-outdoor flow, and a prime location~