contributes to the decarbonization of the building sector, taking due account of technical feasibility and social compatibility. Today, the new building must be fit for the goal of GHG neutrality by 2045 and reliably minimize its often negative effects on the climate and the environment during construction, operation and demolition / subsequent use. The coalition agreement stipulates that the foundations should be created in order to take greater account of the use of gray energy and the life cycle costs of buildings. The coalition agreement also provides for a tightening of the energy standards for building operation as of January 1st, 2025 and for new construction funding that follows a holistic approach. The implementation takes place in a three-stage concept, with the first two stages of new construction funding starting on April 20, 2022 and April 21, 2022. Especially with the second stage, the BEG is already increasingly relying on an ambitious standard based on GHG emissions in new buildings and on the life cycle consideration of the quality seal &quot;Sustainable Buildings&quot; (QNG) developed by the BMWSB. The funding based on the QNG is a cross-sectoral measure, which causes reduction effects both in the area of the manufacture of construction products (thus assigned to the industrial sector) and in the operation of the buildings (building sector). As a third and final step, a new program entitled &quot;Climate-friendly construction&quot; is planned from January 2023. This program further develops the seal of quality for sustainable construction and will focus even more on greenhouse gas emissions in the life cycle of the building. A major challenge lies in the timely, effective and socially acceptable increase in the refurbishment dynamics of existing buildings. About three quarters of the old buildings were built before the first thermal insulation ordinance was introduced in 1979. To date, many of these buildings have only been slightly or hardly renovated in terms of energy efficiency. Compared to subsidized, efficient new buildings, energy-efficient refurbishments generate significantly higher GHG savings per subsidized euro. It is precisely the particularly badly renovated buildings that offer the greatest GHG and energy saving potential, which urgently needs to be leveraged.