The aim of the project is to support from technical assistance funds of the Main Building Supervision Authority (GUNB) and 16 voivodeship inspectorates of construction supervision (WINB), i.e. services responsible for matters related to investment control and issuing decisions on operating permits, among others for the OPI & E and CEF projects. The support obtained will improve the efficiency of WINB’s work and will allow for improved supervision of these investments by increasing the number of inspections at the construction stage and increasing the number of samples of construction products taken. The intensification of inspections of construction sites will allow building supervision to familiarise themselves with the construction process in advance and, therefore, eliminate possible irregularities at a sufficiently early stage so that they do not constitute obstacles to obtaining an operating permit in the future. In connection with the implementation of the above tasks, it is necessary to provide GUNB and WINB with adequate human resources and administrative and technical facilities. Hence, the project plans, among others, to finance expenditure on salaries of employees performing tasks related to the OPI & E, Phoenix and CEF projects, financing expert and legal support, organisational, technical and administrative costs. The project is in line with the provisions of the programming documents, i.e.: Operational Programme Infrastructure and Environment for 2014-2020, Detailed description of the priority axes of the Operational Programme Infrastructure and Environment 2014-2020, Guidelines on the use of technical assistance funds for 2014-2020, Guidelines on the eligibility of expenditure under the European Regional Development Fund, the European Social Fund and the Cohesion Fund for 2014-2020.