Nestled on nearly an acre of lush, meticulously manicured grounds within the highly coveted San Marino Unified School District, the historic Romboz House (1929) stands as a transcendent masterpiece of Spanish Colonial Revival architecture, masterfully designed by the renowned architectural firm Weston & Weston. Gated and immensely private, this rare heirloom estate seamlessly integrates timeless Period elegance with refined contemporary enhancements. The arrival experience begins along a custom tile walkway leading to an authentic covered entry adorned with original tile work and Period iron fixtures. Inside, the formal reception spaces showcase extraordinary artisan craftsmanship, highlighted by intricate coffered wood ceiling details, leaded glass windows, and custom tile artisanry. The stately living room revolves around a magnificent wood-burning fireplace, flowing gracefully toward a formal dining room complemented by a temperature-controlled wine cellar. Designed for both intimate everyday living and high-level entertaining, the main floor thoughtfully bridges historic character with modern utility. An updated chef's kitchen comes outfitted with state-of-the-art appliances, catering effortlessly to modern culinary needs, while an adjacent cozy study and a comfortable family den-complete with its own fireplace-provide versatile retreats for work or relaxation. The residence accommodates three luxurious bedroom suites, each featuring its own private en-suite bathroom, ensuring pristine comfort and privacy for family and guests alike. Outdoors, the expansive resort-like grounds present a sanctuary of mature flora, sweeping lawn vistas, and a freshly updated and resurfaced swimming pool framed by private garden terraces. Complete with a detached three-car garage and secure gated entry, this distinguished residence offers an irreplaceable opportunity to own a piece of architectural history in one of Southern California's premier enclave communities. (*Note: Photos depict the property while previously furnished; the home is currently offered vacant. Pool resurfacing and updates are actively in progress.*)