ᐅ KfW financing – is it necessary or not?

Not necessary. Our house does not have a KFW classification. That's possible too.

nordanney schrieb:

... who source their electricity from fossil fuels during the heating season? Or from a nuclear power plant? The photovoltaic system doesn’t help in winter.

So then the heat pump is ecological?

On one hand, the sun still shines in winter; on the other, this is an oversimplification. Compared to a gas heating system, green electricity from the grid is still more ecological. Especially when combined with proper insulation.

saralina87 schrieb:

Especially with the appropriate insulation.

... which, however, must also be produced and later disposed of (consider all the polystyrene waste that has been produced/continues to be produced for a long time).

If you really want to calculate it accurately, it becomes a very complex matter. In the end, an uninsulated older building often fares better—if the alternative is demolition, disposal, and a resource-intensive new build. It is all very relative and depends on the perspective. The ecological label, in any case, is gladly and quickly applied from all sides.

Maybe it’s also due to age, but sometimes I feel that nowadays, builders set way too many so-called standards among themselves, as if you can’t build without this or that anymore.

I read, among other things, that a house without underfloor heating is complete nonsense, that all kinds of energy performance values are constantly surpassed by each other, or that only one or the other option seems possible and accepted as fact. This often applies to the topic of KfW as well.

In the end, I want to feel really comfortable in my personally designed home, and more attention should be paid to those details; but unfortunately, the budget often runs out there. I had little or no experience with all the KfW aspects, controlled ventilation systems, underfloor heating, and so on in my different living situations, yet I always made sure I felt great in my home.

I appreciate bold individuality in design, which no one else can feel for me.

With or without KfW – that won’t change your comfort in the house. If it costs only a little more, you can go for it, otherwise I would invest the money elsewhere to directly enhance your living and quality of life.

hampshire schrieb:

It’s not necessary. Our house doesn’t have a KfW rating. It works fine.

So, you’re not bankrupt yet from all the huge additional costs?

Smialbuddler schrieb:

... which also need to be produced and later disposed of (see all the Styrofoam waste that has been produced for a long time / still is).

If you really want to calculate it thoroughly, it becomes a very complex matter.
In the end, uninsulated older buildings often come out better – if the alternative is demolition, disposal, and resource-intensive new construction. Everything is very relative and depends on the perspective. The eco-label is certainly something that everyone is quick to attach from all sides.

However, we are talking here a) about new construction and b) there are now many insulation options outside of Styrofoam...
But you can also forcefully try to question the dominance of eco-houses.
Of course, it still depends on the overall package.

pagoni2020 schrieb:

Maybe it’s also due to age, but sometimes I feel that nowadays way too many so-called standards are set among builders themselves, as if you simply can’t build without this or that anymore.
I read, among other things, that a house without underfloor heating is complete nonsense, that various energy performance values keep being outdone by each other, or that only one or the other seems possible and is considered fact.
This often applies to KfW as well.
In the end, I want to feel really comfortable in my individually designed home, and more attention should be paid to that detail; but then money often runs out. I never had all of this like KfW standards, mechanical ventilation, underfloor heating, etc., or only partially, in my various living situations and still always made sure I felt great in the house.
I like bold individuality in design, which no one else can feel for me.
With or without KfW – that won’t change your comfort in the house. If it costs insignificantly more, you can do it, otherwise I would invest the money in something else that directly improves living and quality of life.

There are reportedly actually people who feel more comfortable if their house has a good ecological footprint... But that might just be a rumor.
There are also people here who say a house without a basement isn’t really a house. That shows how different priorities can be.

Ybias78 schrieb:

And you’re not broke yet from all the enormous additional costs?

Personally, I don’t think your question is really about ecology, at least not as suggested – and that’s not a criticism. As I said, I consider it a very subjective prioritization.

The fact is: You don’t have to build to KfW standards, and additional costs can definitely be reduced in other ways.