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What are the main challenges (barriers) to realise a nearlyZEB?

Lack of communication (between owner and planners)/documentation

Lack of communication (between owner and planners)/documentation

1Strongly disagree
15
Strongly disagreeStrongly agree
Too many regulations / lack of support from authorities

Too many regulations / lack of support from authorities

1Strongly disagree
15
Strongly disagreeStrongly agree
Excessively high costs

Excessively high costs

1Strongly disagree
15
Strongly disagreeStrongly agree
Lack of knowledge about technologies and costs

Lack of knowledge about technologies and costs

1Strongly disagree
15
Strongly disagreeStrongly agree