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Лого на Европейската комисия

European framework for sustainable buildings

Level(s) provides a common language for assessing and reporting on the sustainability performance of buildings. It is a simple entry point for applying circular economy principles in our built environment.

Level(s) offers an extensively tested system for measuring and supporting improvements, from design to end of life. It can be applied to residential buildings or offices.

Let's meet Level(s)

A common language creating a shared understanding of sustainability performance in buildings.

eLearning and tools

Our eLearning course and calculator tool will prepare and support you to use Level(s) successfully.

Start using Level(s)

Once you know the basics it is time to download the Level(s) user manuals and start using it in your working environment.


Email your questions to our helpdesk.


General publications | | Генерална дирекция „Околна среда“

If you are interested in Level(s) but unsure where to start, don’t worry. The Level(s) eLearning programme will help you to get going.

General publications | | Генерална дирекция „Околна среда“

If you are using Level(s), the European framework for assessing the sustainability performance of buildings, you can access the European Commission’s free Calculation and Assessment Tool (CAT) to help you create Level(s) assessments for building projects.

General publications | | Генерална дирекция „Околна среда“

Level(s) is a European framework to help built-environment sector professionals assess and monitor the sustainability performance of buildings. If you operate an assessment or certification scheme in the European Union, this publication can help you understand how Level(s) complements your work.