PETERSEN KOLBERG & ASSOCIATES ARCHITECTS/PLANNERS
Steven J. Kolberg - Principal
Reg McDonald - Associate Partner
Paul E, Hosey - Associate/Project Manager
James R. Knees - Associate/Project Manager
Marcelo D. Cardenas - Associate/Project Manager
Warren A. Tyler - Project Manager
Steve J. Kolberg - Principal

Steve began his impressive architectural career in 1973 and joined PKA shortly after in 1980.  His success is hinged on his wonderful talents as a manager, counselor, and an ability to guide clients. Steve’s experience is vast making PKA a strong competitor in the market with projects ranging from complex phased remodels to extensive complex expansions.

Institutional Health would be Steve’s passion in architecture, with his specific favorite being a Neonatal Intensive Care Unit at OHSU Doernbecher’s Hospital.

Reg McDonald - Associate Partner

Reg has been a strong asset to PKA since 1983. His ability to resolve conflicts quickly, technical experience and attention to detail have been just a few of his strongest traits in over 20 years of experience.

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Paul E. Hosey - Project Manager - Associate

After over 15 years of service here at PKA Paul’s talents as project manager through his thorough approach have been priceless on both large and small projects.

James R. Knees - Project Manager - Associate

Jim has a history with PKA since 1991 and over his time here has contributed careful attention to design, a comprehensive approach and a great responsiveness to clients.

Marcelo D. Cardenas - Project Manager - Associate

Since 1990 Marcelo has been a great addition to PKA with a very thorough approach being very well suited to complex projects both large and small.

Warren A. Tyler - Project Manager

Warren has over twenty five years of experience working on a wide range of architectural design and planning projects, including medical, industrial and retail buildings. Warren spent 19 years at Sienna Architecture Company and became a principal there in 1990. Warren has been with PKA since 2001 and has worked with several of our repeat clients.

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