PDA is about the architecture of the public realm. The firm's work includes projects for clients in the education, civic, justice, and transportation markets. PDA's President, Eric Davis, AIA, NCARB, LEED AP, has been a licensed architect for 25 years and has worked previously for firms including OWP+P/Cannon Design, Ross Barney + Jankowski, DMJMH+N/AECOM, and CDM. He has also served as an architect and planner on staff at the Chicago Park District and as a twice-elected Trustee of Oak Park (IL) Township.