With the new Building Energy Act (GEG), which has been in force since the beginning of 2024, politicians are introducing clear requirements for climate protection in the building sector. Owners are directly affected - whether for new buildings, heating replacements or renovations. But what exactly does the law require and where is there room for maneuver or subsidies?
New buildings: At least 65 % renewable energy
The following applies to new buildings: at least 65 % of the heating technology used must be based on renewable energies. Heat pumps, wood heating or district heating meet this requirement. Gas or oil heating systems are only permitted in exceptional cases - for example in hybrid solutions with solar thermal energy.
Existing buildings: obligation to replace old heating systems
Heating systems that are more than 30 years old and of certain types must be replaced. At the same time, transitional periods and hardship regulations apply - e.g. for older owners or in the case of uneconomical expenditure. Owners should check whether their heating system is affected.
Subsidies for climate-friendly solutions
The law is flanked by extensive subsidy programs. Anyone replacing an old heating system with a climate-friendly system can receive grants of up to %. There is also financial support for insulation measures, windows and smart control technology.
Refurbishment roadmap creates clarity
An individual renovation roadmap (iSFP) helps owners to plan long-term modernizations step by step - and is also subsidized. Those who take a systematic approach can optimally coordinate technical, financial and legal requirements.
Conclusion
The new GEG is permanently changing the real estate market. For owners, this means: find out now, have an individual assessment carried out - and take advantage of opportunities for subsidies and value retention. Those who plan in good time remain capable of acting and benefit from state support.
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