Planning energy renovation works in Switzerland? Discover how this official diagnostic and its detailed version can guide your decisions.
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Energy renovation
Energy renovation guide: CECB, insulation, subsidies.
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In Switzerland, the cantonal building energy certificate is an official document that measures the energy efficiency of a property. Comparable to the energy label of a household appliance, it classifies the building on a scale from A (very efficient) to G (poorly efficient).
This report takes several criteria into account: thermal insulation, heat production, hot water consumption and use of renewable energies. The calculation is based on a standardised consumption, allowing an objective comparison between different buildings.
Far from being a mere administrative formality, this assessment is a genuine analytical tool that highlights the strengths and weaknesses of your home's energy performance.
Since 1 January 2017, obtaining a Cantonal Building Energy Certificate (CECB®) has been required in the following situations:
The enhanced version of the energy assessment goes beyond the standard diagnosis. In addition to measuring the building's performance, it provides concrete recommendations to improve its efficiency. A genuine decision-support tool, this in-depth format identifies the most profitable works and optimises investments.
It analyses in detail the technical installations, the building envelope, the heating and ventilation systems, etc. and puts forward several renovation options tailored to your situation.
To better visualise the difference between these two approaches, official CECB and CECB Plus samples are available on the website cecb.ch. The standard certificate primarily presents the building's energy classification, comparable to an energy label. The CECB Plus, for its part, goes further: it also offers several detailed renovation scenarios, with estimated costs, potential energy savings and the expected impact on the building's performance.
Whether in its basic version or as the enhanced audit, these certificates offer several major benefits. They allow renovation works to be planned precisely, prioritising actions according to the state of the building. They also help optimise costs by pointing to the most efficient and cost-effective solutions, ensuring an optimal return on investment.
Furthermore, this official assessment simplifies the administrative steps required to obtain subsidies, improving your chances of benefiting from financial aid thanks to a complete and detailed report. Finally, it helps enhance the value of the property by improving its energy performance: a criterion increasingly sought after on the market.
Improving your home's energy performance represents an investment, but in Switzerland many subsidies exist. An official assessment, and even more so its version including a renovation plan, is often essential to access them.
The aid varies depending on the canton and the type of works. The federal Buildings Programme notably supports thermal insulation, the replacement of fossil-fuel heating systems or the installation of heat pumps. Cantonal subsidies often complement this scheme.
In practice, most cantons cover part of the cost of the CECB Plus: generally between CHF 1'000 and 1'500 depending on the type of building. Contributions are then paid per square metre renovated (energy reference area), with the amount depending on the energy performance gain achieved. Bonuses vary considerably: from CHF 20.- to more than CHF 250.- per m², with higher bonuses for comprehensive renovations and for reaching the best CECB classes (A or B).
These differences show how essential it is to check the local rules: some cantons (such as Fribourg, Neuchâtel and Vaud) even require a CECB when ownership changes.
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No, the CECB is in principle optional. However, certain cantons require it in specific cases, such as a change of ownership or to qualify for cantonal subsidies.
