Designed by renowned architect Lawrence Test, AIA, this 1936 Ranch is a masterful expression of California Living. Thoughtfully positioned around a classic U-shaped floor plan, it embraces its park-like setting, with wide steel windows filling the interiors with natural light, framing views of the surrounding gardens and creating a seamless connection between indoors and out. A formal entry introduces elegant, well-proportioned interiors that have stood the test of time. The grand living room is anchored by a handsome fireplace and opens onto a brick courtyard, while the dining room is ideal for both intimate gatherings and large-scale entertaining. Throughout, beautifully refinished hardwood floors, original period hardware and authentic details celebrate the craftsmanship and enduring style of the era. Four generously sized bedrooms are complemented by a separate den and three baths showcasing original period tile. The kitchen is rich in vintage charm, featuring abundant custom cabinetry, an antique range, stainless steel appliances and an adjacent laundry room with direct access to the attached two-car garage. Recent updates include a new roof and rain gutters, newer attic insulation, central heat & air, 200-amp electrical panel and fresh interior paint. The grounds are equally impressive, with mature, drought-tolerant landscaping enhancing the sense of privacy and tranquility. The rear yard offers exceptional seclusion and is perfectly suited for outdoor entertaining, weekend gatherings or simply enjoying Southern California's year-round climate. Rarely does a home so gracefully balance historic significance with everyday livability. Here is a remarkable opportunity to own an architectural treasure in one of Altadena's most sought-after neighborhoods.