Team
OPN was founded in 1979 and is led by Principals Daniel Thies, Steven Knierim, Bradd Brown, Terry Gebard, David Sorg, Roger Worm and Richard Seely. Based in Cedar Rapids and Des Moines, OPN is comprised of 82 talented individuals engaged in open collaboration. Our practice is built upon strong relationships—with our clients and each other—and a commitment to doing what we say we’ll do. As a firm we are committed to the highest standards of professional practice and we enjoy the process and results of creating architecture that exceeds our clients’ expectations.
