KFW funding (grants) with 2 residential units

Hello everyone,

unfortunately, my energy consultant is still on vacation, so I am hoping for helpful advice here.

We are renovating our house and would like to take advantage of the grants (especially individual measures). Now we have learned that it is also important how many residential units are in the house.
So if we have costs for a new roof covering including insulation amounting to €40,000, there is a 10% grant, i.e., €4,000. If we now have 2 residential units, do we then get €8,000, or how should one understand this with regard to the residential units?

On the ground floor there is an apartment that my grandfather currently also occupies. We would move into the upper floor as soon as the renovation is basically completed.

Thank you for helpful answers.

You may split the costs between both units, thus the funds will last longer. So €20,000 and €2,000 subsidy per residential unit.

Since I have seen that you also asked the question in another forum and there even a user who allegedly is an energy consultant (I told you, that species is a case in itself!) confirmed the €8,000, here is once again the clear indication that this is not correct.

You can basically deduce it relatively logically if you imagine a building with 10 residential units, where the owners invest €50,000. 10 residential units at 10% of the total costs = 100% funding of the measure by KFW? Hardly

The advantage with multiple residential units is only that up to €50,000 costs per residential unit may be considered. This becomes interesting if the building actually has higher eligible costs that would otherwise not be taken into account.

Example: Building receives a new roof (€40,000), facade insulation (€30,000), heating (€25,000), windows (€25,000) = €120,000 total

With 1 residential unit = 1x €5,000 funding with €50,000 max eligible costs (€70,000 investment are not funded)
With 2 residential units = 2x €5,000 = €10,000 funding with 2x €50,000 = €100,000 max eligible costs (€20,000 investment are not funded)
With 3 residential units = 3x €4,000 = €12,000 funding with 3x €40,000 = €120,000 max eligible costs (funding is not fully utilized)

Yes, I was also surprised about that just now, just like with the 10 residential units, I thought the same. Almost everyone would do it that way then.

But isn't it like in your example that I get 10% for each individual measure?
For the roof 10% = €4,000
For the facade 10% = €3,000
For the heating 10% = €2,500
For the windows 10% = €2,500

Since each individual unit does not exceed €5,000?

Nope... max. €5,000 funding per housing unit in total. That could only work with enough time between the measures (10 years?). If you want more, you have to turn it into an efficiency house.

Okay thanks. No, the measures are not that far apart.

Just the question if I now have measures amounting to

55,000€ for 2 residential units = 2x 5,000€ = 10,000€ subsidy in total

or

95,000€ for 2 residential units = 2x5,000€ = 10,000€ subsidy in total?

this is how I understood your calculation now.