Butler Armsden Architects was founded in 1985 by the firm's principals, Lewis Butler and Catherine Armsden.

Lewis Butler, AIA, received his B.S. in Civil Engineering from Stanford University and his Master in Architecture from Harvard University Graduate School of Design. Prior to co-founding Butler Armsden Architects, Lewis was a member of the distinguished firm of William Turnbull & Associates in San Francisco.

Catherine Armsden earned her A.B. in Fine Arts & Art History at Brown University and her Master in Architecture from Harvard University Graduate School of Design. At Butler Armsden, Catherine became interested in the unique physical, emotional and sensory histories that clients bring to the design process when seeking to create houses that will feel like home. Inspired to explore more about our complex relationships with houses, Catherine left Butler Armsden in 2000 to write full time. Her novel, Dream House, was published in 2015.