Two homes, updated and upgraded, on one generous lot make 636 Forest Avenue a rare South Pasadena offering. On a quiet residential street, the property combines a renovated 1910 Craftsman main residence with a large fully permitted, detached ADU, creating exceptional possibilities for multi-generational living, rental income, extended family visits or guests. The main house is bright, comfortable, and beautifully upgraded. An open-plan living room includes a charming bayed sitting area, while the spacious kitchen feels fresh and current with a gas range, white herringbone tile backsplash, ample cabinetry, and plenty of room for cooking and gathering. A large laundry just beyond provides additional flexibility as a home office or studio and offers convenient access to the driveway and garage. The primary suite enjoys abundant natural light, an updated full bath, walk-in closet, and sliding doors opening directly to the backyard. Two additional bedrooms, one currently used as an office, share a second updated full bath. Beyond the main residence, the detached, 3 bedroom, 2 bath fully permitted ADU is a separate home of its own. Entered from a pretty paver porch, it is bright and open with an updated kitchen, large comfortable living space, in-unit laundry, three well-proportioned bedrooms and updated baths. A private garden area behind the ADU gives the second residence its own private outdoor retreat. The large, green lot creates plenty of breathing room between the two homes and offers multiple areas for outdoor living, dining, gardening, and entertaining. Don't miss the spacious two-car garage, great for cars and storage! Located in a quiet pocket of South Pasadena, just minutes from Trader Joe's, the Arroyo Seco Golf Course and Bike Trail, South Pasadena Dog Park, Jones Coffee and Mike & Anne's, the property also enjoys easy access to Pasadena, Highland Park and Downtown Los Angeles, all within the highly regarded South Pasadena Unified School District.