New A to G scale from 2027 — but only for non-residential buildings
From 1 January 2027, certificates for non-residential buildings carry a class from A to G. Homes keep A+ to H — with the provision in the Act.
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Everything you need to know about the German energy certificate
Plain-English guides to the German energy performance certificate (Energieausweis): who needs one, what it costs, how the classes work and how to order online.
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The Building Modernisation Act (GModG): what has applied since July 2026
The Building Modernisation Act has applied since 29 July 2026. What changes for heating, certificates and renovation — and what only applies from 2027.