When Delta Dental of Iowa decided to enlarge its corporate offices in Johnston, Iowa, there was little need to repeat the exhaustive search that had gone into finding an architect five years earlier. At that time, a competitive selection process and a great deal of research resulted in OPN Architects being commissioned. Delta Dental, a national insurance company, was delighted with the building OPN designed and thoroughly enjoyed working with the regional architecture firm. This made obvious the selection of an architect for the addition: No one knew the clients, the situation, or the existing building better than OPN.