I know that quite a few EU and EEA countries mandate the appropriate level of insulation and ventilation for new builds.
Switzerland for example, every room has a mandatory requirement for natural light and an opening window to the outside.
@Stonehedge started
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I know that quite a few EU and EEA countries mandate the appropriate level of insulation and ventilation for new builds.
Switzerland for example, every room has a mandatory requirement for natural light and an opening window to the outside.