William Hefner

William Hefner is the founder of the Los Angeles-based architectural firm Studio William Hefner. His practice encompasses built and restoration architecture, interior and furniture design, and landscape architecture and design, with a focus on the serene integration of building, interiors, and natural environment. Known for his versatility in both traditional and modernist architecture, Hefner has created landmark estates over the years in a variety of styles. His treatise is to design homes that inspire, nurture, and transform the lives of the families who inhabit them.

William brings the same refined properties of custom residential design to his work in various multi-family, hospitality, and mixed use commercial projects. His interest in environmental building, both antique and modern, has led to the application of sustainable architectural practices through his portfolio. Across all disciplines, he is driven by a longtime interest in cultural histories, with a devotion to crafted and authentic detail that can be beautifully translated for modern living.

William Hefner is the author of the books California Homes and Chateau des Fleurs. His work is widely published in anthologies and magazines in the United States, as well as internationally. He lives in Los Angeles with his wife Kazuko and their son.

William Hefner - AIA
Kazuko Hoshino - Principal, Interior Design
Carla Vaga - AIA, LEED AP, Principal
Nathalie Aragno - AIA, Principal
Michael Aquino - LEED GA, Associate
Mark Imagawa - LEED AP BD+C, Associate
Bob Irvine - Director, Montecito Office