In Europe more than 40% of the total energy is spend today in the Buildings sector, significantly contributing in greenhouse effect and air pollution. It is well known that from the 160 million buildings in the EU the majority of them (estimated 85%) are thermally inefficient. Therefore, it is of serious matter that existing buildings become energy renovated. There have been several national and European projects that identified the complexity of reasons as barriers for retrofitting projects.

The information needed during the decision phase includes investment costs, energy savings, a general overview of each solution proposed with experience from other projects and its benefits/limitations. Because lack of time often is a serious limitation the necessary information has to be easy to find and retrieve, easy to understand and easy to apply.

Upgrading of the European building stock is an urgent challenge. Improved energy efficiency along with accessibility and remedy against sick building syndrome problems are needed. However, the much needed rise of major retrofitting efforts is still to come. It is obvious that new approaches and new operations and business models are needed.

The considerable number of stake-holders in retrofitting processes, and the great variety inside the existing building stock makes the field less appealing for developers and contractors. The more objectives there are, the more complicated are the decision-making processes and later the actual deliveries.

User-orientation in building processes and value-chains opens new opportunities to find drivers for doing renovation. User-orientation calls for communication methods that help to identify the needs and expectations of users, interpret them in technical terms, and on the other hand visualize the possible solutions. For the investor/ building owner, a structured overview of technologies and their costs is needed, that makes it easy to express what they are willing to pay for.

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