David Kroll

Principal / Director of Preservation

“It’s rewarding to be the steward of our nation’s historic resources.”


As RATIO’s Director of Preservation, David Kroll holds a deep sense of responsibility for historic resources. His personal design approach is to turn something negative into a positive, something obsolete into useful, drawing inspiration from the context and story of each project. Preservation is a specialized approach, but the projects themselves are quite diverse—everything from small monuments to large complexes, and from historic homes to whole communities. At every scale, Dave is driven by his passion for the detailed forensics-style work that helps to preserve history, and by the belief that when a project is complete, people shouldn’t be able to tell that the team has been there.

Dave is an explorer at heart, whether he is investigating an historic site or artifact for design clues, or scuba diving in the Caribbean. Prior to joining RATIO in 1993, Dave served as Historical Architect with the State of Indiana. He has also taught numerous architecture and preservation courses at Ball State University. His students have the opportunity to participate in real world projects, such as design guidelines for an historic district, or restoration from storm destruction.


Education & Registration
  • Federal Professional Qualifications Standards (36 CFR Part 61) in History/Architectural History and Architecture/Historic Architecture
  • Master of Science, Historic Preservation, Ball State University
  • Bachelor of Arts, Architecture, Iowa State University