Step into this stunning single-level mid-century modern Eichler, a true architectural gem. Located in Castro Valley's desirable Greenridge neighborhood, this 4-bedroom, 2-bath home offers 1,901 sq ft of iconic design, enhanced with thoughtful modern upgrades. Signature features include clean lines, abundant natural light, and seamless indoor-outdoor flow. At the center of the home is a dramatic enclosed atrium with a glass roof, filling the interior with sunlight. Walls of glass open to beautifully landscaped yards, professionally designed by Yardzen and complete with fruit trees and a new irrigation system. The kitchen and both bathrooms have been tastefully remodeled, and the home has been refreshed with new carpet, updated lighting, hardware, and finishes throughout. Uncommon for an Eichler, the home includes forced air heating and AC, dual-pane windows and doors, ceiling fans in the atrium, and an automatic skylight closure system. Major infrastructure updates include re-routed plumbing out of the slab and new bathroom exhaust fans. For modern convenience, the home is EV-ready with a charger installed in the garage. The expansive backyard is a peaceful, low-maintenance retreat-ideal for relaxing or entertaining.