Welcome to 250 S. Altadena Drive, located in the CalTech area of East Pasadena. This 1947 ranch style home has been completely updated in a classically current style by a professional designer. Updates to the original house include new kitchen and bathroom finishes, new HVAC system, new 200 amp electrical panel, interior and exterior painting, refinished original white oak floors, attic insulation, and new roof. Improvements include the permitted 480 square foot addition of a stunning master suite, which blends seamlessly between the original house and detached garage. The fourth bedroom is staged as a den/guest room, and includes the original brick fireplace, beadboard wainscot, closet, and 3/4 bath. It offers a multitude of functions as a den, guest room, office, playroom, or bedroom. The open plan living room, dining room, and kitchen feature a wood-burning brick fireplace with restored built-in cabinetry, new shaker cabinets, quartz counters and stainless steel appliances. Outside, a new concrete and brick patio is accessible from the kitchen, den, and master. The patio leads down a brick-lined driveway into a very private, spacious and lush backyard offering ample hard and softscapes for children to play and adults to relax. Move in ready!