Documentation for the construction and laws associated with it are important topics in construction and it is important to understand it, to save time and money. The work begins with an explanation of the project, its purpose and division. After this is further clarified the idea and purpose of the preliminary, main and detailed design. Before any construction of buildings it is necessary to obtain a license, depending on what kind of building it is, but however there are buildings that do not require a building permit and the main project that have certain Regulations on the simple and other buildings and works. Then comes the explanation of permits: location permit, building permit and using permit. Obtaining all the necessary permits is not easy, and it is often very slow due to complex regulations and non-compliance. Progress can be seen from year to year, the Ministry of Construction and Physical Planning systematically introduces digitization. E-license is an example of good practice that began in Varaždin County, and later spread to the rest of the Croatia. On the whole Croatian territory there is work towards the legalization of illegally constructed buildings. This project is a large scale, which is a result of lack of understanding of the public and general indifference to the laws of that for many years conducted a practice that distorts space and the Croatian coast. The city of Dubrovnik is a good example of the effectiveness of which is in first place in the number of resolved cases and processed more than 90% of applications received. The shift towards better is more visible, but there is still room for further progress.