Statement of compliance is official document that is issued based on project documentation and is mandatory part of the documentation for receiving Usage permit. Company Licensed for performance of energy control is issuing this type of document. In the Statement of compliance is listed all data for thermal characteristics of all construction elements, part of the building, the designed energy class and the percentage of energy recovery, if it exists. All above stated parameters should be equal or lower than the maximum allowed, according the law regulation. With this document it is stated that the building is designed as energy efficient.