This paper gives an overview of the business processes of the construction site and construction organization, which primarily relates to the renovation and reconstruction of the building of interest. An important part of this chapter is an analysis of the legal regulation which refers to construction procedures with a special emphasis on renovation and reconstruction. The next chapter shows project management processes that are an important part of planning, elaboration and realization of projects. The BIM process is today an unavoidable part of advanced planning, management and realization of projects. Given that the implementation of the BIM process is the necessary application of advanced geomatics technologies, the explanation of 3D laser scanning is given, as one of the crucial technologies for collecting geospatial data for the purpose of analyzing and preparing technical substrates and geospatial information for further project procedures. The central part of the work represents the 3D scanning with the laser scanner of the selected building. By using this technology, in a few days geospatial data was collected in the form of cloud of points of external dimensions of buildings and the ground floor consisting of several rooms. After processing 3D scanned data, the test building is displayed in 3D view. In the process of analysis, the measurement of line and surface areas of the building is presented and the possibility of exporting the processed project into one of the CAD software tools, which is today an inevitable part of the process of preparing and analyzing the technical background for the purpose of further design procedures. The work ends with the conclusion or with the guidelines based on the concrete project.