Focusing on medieval town planning and its construction control, this work tries to prove the existence of regular spatial planning through the city Statutes of medieval communes in Dalmatia with a special attention to Dubrovnik. A municipality as a political and social community with a certain degree of independence but also with a spatial limitation particularly in its urban parts was forced to monitor the development of its urban matrix through legal provisions thus protecting the space from illegal and inappropriate construction. Under the influence of Italian municipalities the Dalmatian towns took over Italian urban trends somehow adopting them to their relief features.The lack of space capacities was particularly evident in the Municipality of Dubrovnik where the City, squeezed between the mountain and the sea, had to invest all possible powers in order to create a respectable City in the economic sense at such a limited area. By careful demarcation and protection of public from private property, building sewage and water supply systems as well as by replacing wooden construction with stone edifices for safety and aesthetic reasons, the City government of Dubrovnik presented the City as a place of prosperity thus further emphasizing its representative status. It was definitely an important step in creating the centuries’ lasting independence and success of the Dubrovnik Republic.