Today, one of the biggest problems of our cities is the visual pollution and confusion, which is caused by signage because of the absence of a regulation or a special authorized institution. To prevent this visual pollution, the commercial signage must be examined carefully. This research aims to study the problems about signage and sign planning process, in respect with the regulation examples that are valid for both, in foreign countries and Turkiye, as well as to offer a regulation example in the historical city center of izmir; Kemeraltl in accordance with registered buildings as a case study.