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Keffer/Overton (K/O) is a full service design firm specializing in architecture, planning, and construction coordination. K/O has the distinction of being the oldest active architectural firm in Central Iowa. We trace our lineage back to 1876 when Bell & Hackney opened the doors of their architectural practice to design and complete construction of the Iowa State Capitol Building in Des Moines. Throughout the years the mantel of practice has passed on to successive generations. With each new generation, the name of the firm has changed accordingly. In 1993, on the firm’s 112th anniversary, the name was changed to Keffer/Overton. K/O focuses on renovation/restoration, public, commercial, retail, cultural/museums, and mass entertainment project types. K/O is a nationally recognized designer specializing in entertainment facility and fairground related design with many projects around the United States. Our projects have demonstrated a full range of design services including architecture, landscape architecture, interior design, condition analysis, infrastructure repair, historic renovation, planning, master planning, programming, and construction management. How do we achieve this? We view each client as a friend, and honor that friendship with the utmost courtesy and respect.



Notable Historic Buildings:

State of Iowa Capitol Building 1885
Des Moines Public Library 1899
Iowa State Fair Grandstand 1909
University of Iowa Library 1949