07.07.2025 • 4 min. reading time
Content of this article
Rising energy costs and increasing climate protection are making energy efficiency a key factor in real estate valuation. Anyone who owns, wants to buy or sell a house can hardly avoid one topic:energy-efficient refurbishment.
An energy-efficient renovation not only improves the environmental balance of a building - it also ensures lower heating costs, greater living comfort and a long-term increase in value.
What does energy-efficient renovation mean?
Energy-efficient refurbishment refers to all structural measures aimed at significantly reducing energy consumption. This includes
- Replacing old windows
- Insulation of the roof and facade
- Modernization of the heating system
In contrast to purely cosmetic work, these measures lead to long-term efficiency gains - especially in older buildings.
You can find out which measures are legally mandatory in the article on mandatory refurbishment.
What does energy-efficient renovation mean?
Costs of energy-efficient renovations: What will owners have to pay?
The costs vary depending on the condition and scope. Here are some guidelines:
- New windows (triple-glazed): approx. 290-390 € / m²
- Roof insulation: approx. 180-250 € / m²
- Facade insulation: approx. 230-325 € / m²
- Heating modernization (e.g. heat pump): € 18,000-30,000
- Central ventilation system: € 8,000-16,000, plus € 10-140/year operating costs
In the long term, these investments reduce operating costs and increase the value of the property.
Subsidies for energy-efficient refurbishment
Government agencies such as KfW and BAFA offer subsidy programs in the form of grants, loans and tax concessions. Prerequisites include
- Involvement of a certified energy consultant
- Application before the start of construction
- Implementation by specialist companies
Use the online tools of the funding agencies or get advice - e.g. from the expert advice of VON POLL IMMOBILIEN.
Advice from real estate agents - sensible and efficient
An experienced estate agent will help you to assess which measures are really worthwhile and how they will affect the value of your property. They can also put you in touch with specialist companies, energy consultants or architects - and provide support in marketing the renovated property.
Energy-efficient renovation - step by step
- Energy advice
