About The Firm
Deffenbaugh & Associates is a full-service architectural firm, providing architectural, interior, programming and master planning services for clients throughout the Northwest. Established in 1982, the company has a 30-year history and a diverse portfolio of more than 950 design projects. The firm has developed a reputation for quality design, strong communication skills, and advocating for our clients.
University of Oregon
Bachelor of Architecture, 1975
Over the past 30 years as principal of a small architectural firm, Lonny Deffenbaugh has designed and overseen more than 950 projects in the Northwest. Lonny's strengths in program development, space planning, and site planning have provided a strong foundation for guiding the firm. In conjunction with a "client-centered design" philosophy, he has maintained a loyal client and project reference base.
Lonny's knowledge of construction and construction trades has been an integral component of the firm's reputation for the integration of building systems and appropriate detailing. Leading a small firm requires a strong knowledge base of all aspects of business as well as the architectural field. This knowledge base provides a shared understanding and relationship with the concerns of clients in the broader context of business as it relates to project requirements.