The subject of the project is the building of the District Department of Úněšov. The building no longer meets the requirements for technical competence of the buildings. Therefore, the perimeter casing will be insulated, if necessary, the fillings of the holes will be replaced, the existing outdated gas heat sources will be replaced, the hot water heating system and the heating system will be modified. The project is aimed at improving the energy performance of the building. Its implementation will have a positive impact on the environment, saving money and saving energy.