Newly built single-family house - gas or air heat pump + photovoltaics + storage?

I have to quickly add another post now because this is bothering me and I keep thinking to myself, I’m not stupid.
This can’t be so unclear, others have managed it too. My EB wrote me the following procedure again today, which was actually already clear to me....

1. Complete the plan
2. EB checks whether KfW 55 EE is achieved and if so -> carries out an online confirmation from KfW
3. My decision whether loan + grant or only grant (NEW) -> grant of €26,250 is paid out immediately
4. Register on the KfW page in program 461 -> online confirmation from KfW -> confirmation for the application (BZA) number is generated
5. Specialist companies must carry out crucial parts of the construction (foundation slab, shell, roof, windows, front door, screed, chimney) with invoice.
6. Own work is not subsidized
7. Planning and statics, bathroom fixtures, kitchen are not subsidized
8. When everything is finished, the EB comes again, looks at everything (whatever is still visible then), takes the receipts and checks them and then
9. At the end there is an online confirmation from KfW and a BnD number -> is entered in the online portal.

Have I outlined this correctly now?
Or have I understood correctly that it does NOT matter what the SUM of the individual trades costs but only that they were carried out in compliance?
I’m going to exaggerate now. If I put up a shell for €100,000, roof €10,000, windows €5,000, etc. etc. and in the end only come to a construction sum of €300,000 is that also okay???
What matters is that...

1. Photovoltaics + heat pump + 42 cm brick + triple glazing are present AND
2. All these trades + the building envelope / roof are properly carried out by companies with invoices.

Regards
Flo

Does nobody want to say anything? Too bad.

3. Decision by me whether loan + grant or only grant (NEW) -> Grant of €26,250 is paid out immediately

No, the grant is only given when the house is finished and the EB has given the corresponding confirmation. Regardless of which variant (loan with repayment grant or pure grant). So you always have to finance the entire amount.

4. Register on the KfW website in program 461 -> Online confirmation from KfW -> Confirmation of application (BZA) number is generated

You get the confirmation of application (BZA) number directly from the EB, because with it you go online to the KfW and get

an online confirmation from KfW

5. Specialist companies must carry out crucial parts of the construction (floor slab, shell, roof, windows, front door, screed, chimney) with invoice. 6. Own work is not subsidized 7. Planning and structural engineering, bathroom fittings, kitchen are not subsidized

With building costs of several hundred thousand euros it does not matter, since you only ever get an amount related to €150,000 building costs. This is often already the completed shell. And yes, own work no longer works.

8. When everything is finished, the EB comes again, looks at everything (whatever is still visible then), takes the receipts and checks them and then

You need construction supervision by the EB. So he comes in between and looks at the construction or the installed materials. Of course, he also checks what has been installed based on receipts.

9. In the end there is an online confirmation from KfW and a BnD number -> entered in the online portal.

You get confirmation from the EB and apply with it for the payment of the grant (as repayment grant or cash).

Or did I understand correctly that it is NOT important what SUM the individual trades cost but only that they were executed in compliance? I will now try to exaggerate this. If I build a shell for €100,000, roof €10,000, windows €5,000, etc., etc. and in the end I only come to a building sum of €300,000 is that also irrelevant???

For 55EE a maximum of €150,000 eligible costs are subsidized. So shell + roof + windows + heating + EE etc. As soon as these costs reach €150,000, you get the highest possible subsidy. If you build more expensive than anyone else, there is no more subsidy. For any normal single-family house it is therefore irrelevant how expensive it is, because you should always reach the €150,000.

Important is that ... 1. Photovoltaic + heat pump + 42 cm stone + triple glazing is present AND 2. All these trades + the building envelope / roof are cleanly carried out by companies with receipts.

No. Important is that you achieve KfW 55EE. How you achieve that is irrelevant. And it is important that the work is carried out by specialist companies.