2016 KfW Efficiency House 55 according to reference values (U-values)

exactly that is what I also want to know.....

Who has to confirm this proof, is the architect sufficient here or does it have to be an energy consultant??

KFW 55 must be proven and supervised by an energy consultant/expert. If an architect can demonstrably work as an energy consultant, he can do this; otherwise not.

What if, for example, one exceeds the limits with the windows, can this be compensated by better insulated exterior walls or does one quickly end up with the more complex calculation again??

That’s the – sorry – "crazy" thing about the whole funding situation. Overall, it has to fit; where the individual adjustment screws are applied does not matter. So if your windows do not "fit", you compensate for it, for example, by stronger insulation in the roof, "better" bricks or higher insulation under the basement ceiling, and then it is sufficient. Rhenish regards

KfW 55 must be demonstrated and supervised by an energy consultant/expert. If an architect is proven to be working as an energy consultant, they can provide this; otherwise not.

Doesn't he also have to be independent? In other words, is your own architect excluded?

Doesn't he also have to be independent? In other words, the architect himself is out?

He "must not" be connected to the later executing general contractor/main contractor.
Rhenish greetings

He "must not" be associated with the later executing general contractor (GU/GÜ).

Rhineland greetings

and what if the architect does tendering & construction management? LPH 1-9?

and if the architect does tendering & construction management? LPH 1-9?

Then of course not, he would basically be confirming himself.

Rhenish regards