In this thesis, the creation of project documentation of electrical installations of a small residential building using given software tools is demonstrated. Using software such as SEE Electrical and EcoStruxture Power Design, graphical and textual sections of the project's technical documentation were created. Firstly, in the second chapter, the method of using the SEE Electrical program package for creating a project of the building's electrical installation diagrams is described in detail. For this purpose, the modules Installations and Circuit Diagram IEC were selected. The procedure for creating a new project and opening and editing an existing project is described. Then the drawing of the electrical scheme of the power distribution was explained using the example of a smaller building. The method of drawing the floor plan of the apartment, adding electrical elements and creating the electrical scheme of the apartment is also presented. After that, in the third chapter, the mode of operation in the EcoStruxture Power Design program is described, which is used for calculation, dimensioning and selection of electrical equipment, using a single-pole scheme. The procedure for creating new and opening and editing existing projects is presented. The procedure for creating a single-pole apartment power distribution scheme is described based on the given example of a building. In addition, the method of adjusting parameters and executing calculations in the program followed by equipment selection process in accordance with the obtained results are explained. The last chapter presents the conclusions reached during writing of this thesis.