Owners of single and two-family homes in Germany are largely unaware of the energy efficiency of their homes. In addition, many are unsettled by the political debates on the heating transition and the Building Energy Act, which prevents them from carrying out renovation measures. This is the result of a study in which the „B+L Marktdaten institute“ surveyed more than 2,000 homeowners across Germany in August and September. The study was commissioned by „Initiative Klimaneutrales Deutschland“ (IKND) and „Repräsentanz Transparente Gebäudehülle“ (RTG), a representative body of trade associations and companies. These are the key findings of the study: