ᐅ Penetration for a kitchen exhaust vent in a house (Energy Saving Regulation 2014)?

Recently, we purchased a semi-detached house built to the 2014 Energy Saving Ordinance standard. The kitchen is open, and we cook warm, oily meals every day. Therefore, we would like to have an exhaust vent, even though the house was designed with a ventilation system. Officially, we are not allowed to make a wall penetration. I would just like to ask what might happen if we decide to do this later anyway? What consequences could there be? Thank you.

Who says you are not allowed to do that?

Sebastian79 schrieb:
Who says you’re not allowed to?

The construction company that is building and selling the entire residential area.

Again: Who says that? No one can forbid that...

Sebastian79 schrieb:
Once again: Who says that? No one can forbid that...

The construction company that is building and selling the entire residential area.

She has no say.