Wolters received so many commissions from the government of North Rhine-Westphalia that he opened an additional office in Düsseldorf. In 1955, Wolters won a competition to design the Industrie-Kreditbank building in Düsseldorf. Two years later, he was again successful in that city in a competition to design the Galarie Conzen. Wolters was awarded a prize for his design to reconstruct Düsseldorf's "Altstadt" (Old City). His son, Fritz Wolters, also an architect, described him as a man who fought uncompromisingly for what he saw as the "whole" in urban planning, and once ended a discussion with a local committee with the remark that they had "rented his head, not his pencil". Wolters also considered himself to be a "functionalist", designing a number of concrete, flat roofed, modern hospitals.