Is an energy consultant necessary for KfW55?

This is how it looks. For costs and invoices of 8,000 euros through an expert, 4,000 euros are covered. Important: collect all invoices and only submit them once the support is completed.

OK, just to make sure I understand correctly.

The structural engineer is handling the KfW application.
The energy consultant checks whether everything listed in the application is actually being followed (checking delivery notes, possibly also on the construction site?).
Is that correct?

Of course, I need the application. But I probably also need the energy consultant’s certification? Does this have to be done by independent companies?

Is the subsidy of 50% (and a maximum of 4000) granted only for the certification or also already for submitting the application?

Is the energy consultant also required for the simplified verification procedure "KfW-Efficiency House 55 according to reference values"?

Is an energy consultant also required for the simplified verification procedure "KfW-Effizienzhaus 55 according to reference values"?

Yes, because he must confirm that the reference values have been met by the materials used accordingly

OK, you probably only save the relatively complex calculation or do you have other advantages?

Well, the U-value of walls, roofs, and so on must definitely be calculated. And an energy saving ordinance calculation must be done anyway for the building application. However, the thermal bridge assessment according to KfW may possibly be easier. You just have to weigh which way is easier to achieve KFW 55, and in my opinion, you always have to calculate for that.