As Managing Partner of Marmol Radziner since the firm was founded in 1989, Leo Marmol oversees and supports the overall process of every project from inception to completion. Marmol lectures widely on the topics of architecture and historic restoration; he has also organized numerous architectural tours that highlight the wealth of mid-century Modernist landmarks in Southern California, and serves on the Boards of Trustees of the Palm Springs Art Museum and the UCLA Lab School.

“Over the last decade, painting has come to occupy an increasingly important segment of Marmol’s creative energy and vision,” says Dr. Steven Nash, Palm Springs Art Museum's former director. The architect took up painting in the mid-1980s, while studying at California Polytechnic State University. “Around 2010-12, his painting narrowed to a more focused pattern of formal and expressive modes, associated generally with the tradition of Abstract Expressionism.”